id	sid	tid	token	lemma	pos
40119	1	1	generously	generously	RB
40119	1	2	made	make	VBN
40119	1	3	available	available	JJ
40119	1	4	by	by	IN
40119	1	5	The	the	DT
40119	1	6	Internet	Internet	NNP
40119	1	7	Archive	Archive	NNP
40119	1	8	.	.	.
40119	1	9	)	)	-RRB-
40119	2	1	CURIOSITIES	curiosity	NNS
40119	2	2	OF	of	IN
40119	2	3	LIGHT	LIGHT	NNP
40119	2	4	AND	and	CC
40119	2	5	SIGHT	SIGHT	NNP
40119	2	6	.	.	.
40119	3	1	CURIOSITIES	curiosity	NNS
40119	3	2	OF	of	IN
40119	3	3	LIGHT	LIGHT	NNP
40119	3	4	AND	and	CC
40119	3	5	SIGHT	SIGHT	NNP
40119	3	6	BY	by	IN
40119	3	7	SHELFORD	SHELFORD	NNP
40119	3	8	BIDWELL	BIDWELL	NNP
40119	3	9	,	,	,
40119	3	10	M.A.	M.A.	NNP
40119	3	11	,	,	,
40119	3	12	LL.B.	LL.B.	NNP
40119	3	13	,	,	,
40119	3	14	F.R.S.	F.R.S.	NNP
40119	4	1	_	_	NNP
40119	4	2	WITH	with	IN
40119	4	3	FIFTY	FIFTY	NNP
40119	4	4	ILLUSTRATIONS	illustration	VBD
40119	4	5	_	_	NNP
40119	4	6	LONDON	LONDON	NNP
40119	4	7	:	:	:
40119	4	8	SWAN	SWAN	NNP
40119	4	9	SONNENSCHEIN	SONNENSCHEIN	NNP
40119	4	10	&	&	CC
40119	4	11	CO	CO	NNP
40119	4	12	.	.	NNP
40119	4	13	,	,	,
40119	4	14	LIMITED	LIMITED	NNP
40119	4	15	PATERNOSTER	PATERNOSTER	NNP
40119	4	16	SQUARE	SQUARE	NNP
40119	4	17	1899	1899	CD
40119	4	18	PREFACE	PREFACE	NNP
40119	4	19	.	.	.
40119	5	1	The	the	DT
40119	5	2	following	follow	VBG
40119	5	3	chapters	chapter	NNS
40119	5	4	are	be	VBP
40119	5	5	based	base	VBN
40119	5	6	upon	upon	IN
40119	5	7	notes	note	NNS
40119	5	8	of	of	IN
40119	5	9	several	several	JJ
40119	5	10	unconnected	unconnected	JJ
40119	5	11	lectures	lecture	NNS
40119	5	12	addressed	address	VBN
40119	5	13	to	to	IN
40119	5	14	audiences	audience	NNS
40119	5	15	of	of	IN
40119	5	16	very	very	RB
40119	5	17	different	different	JJ
40119	5	18	classes	class	NNS
40119	5	19	in	in	IN
40119	5	20	the	the	DT
40119	5	21	theatres	theatre	NNS
40119	5	22	of	of	IN
40119	5	23	the	the	DT
40119	5	24	Royal	Royal	NNP
40119	5	25	Institution	Institution	NNP
40119	5	26	,	,	,
40119	5	27	the	the	DT
40119	5	28	London	London	NNP
40119	5	29	Institution	Institution	NNP
40119	5	30	,	,	,
40119	5	31	the	the	DT
40119	5	32	Leeds	Leeds	NNP
40119	5	33	Philosophical	Philosophical	NNP
40119	5	34	and	and	CC
40119	5	35	Literary	Literary	NNP
40119	5	36	Society	Society	NNP
40119	5	37	,	,	,
40119	5	38	and	and	CC
40119	5	39	Caius	Caius	NNP
40119	5	40	House	House	NNP
40119	5	41	,	,	,
40119	5	42	Battersea	Battersea	NNP
40119	5	43	.	.	.
40119	6	1	In	in	IN
40119	6	2	preparing	prepare	VBG
40119	6	3	the	the	DT
40119	6	4	notes	note	NNS
40119	6	5	for	for	IN
40119	6	6	publication	publication	NN
40119	6	7	the	the	DT
40119	6	8	matter	matter	NN
40119	6	9	has	have	VBZ
40119	6	10	been	be	VBN
40119	6	11	re	re	VBN
40119	6	12	-	-	VBN
40119	6	13	arranged	arrange	VBN
40119	6	14	with	with	IN
40119	6	15	the	the	DT
40119	6	16	object	object	NN
40119	6	17	of	of	IN
40119	6	18	presenting	present	VBG
40119	6	19	it	-PRON-	PRP
40119	6	20	,	,	,
40119	6	21	as	as	RB
40119	6	22	far	far	RB
40119	6	23	as	as	IN
40119	6	24	might	may	MD
40119	6	25	be	be	VB
40119	6	26	,	,	,
40119	6	27	in	in	IN
40119	6	28	methodical	methodical	JJ
40119	6	29	order	order	NN
40119	6	30	;	;	:
40119	6	31	additions	addition	NNS
40119	6	32	and	and	CC
40119	6	33	omissions	omission	NNS
40119	6	34	have	have	VBP
40119	6	35	been	be	VBN
40119	6	36	freely	freely	RB
40119	6	37	made	make	VBN
40119	6	38	,	,	,
40119	6	39	and	and	CC
40119	6	40	numerous	numerous	JJ
40119	6	41	diagrams	diagram	NNS
40119	6	42	,	,	,
40119	6	43	illustrative	illustrative	JJ
40119	6	44	of	of	IN
40119	6	45	the	the	DT
40119	6	46	apparatus	apparatus	NN
40119	6	47	and	and	CC
40119	6	48	experiments	experiment	NNS
40119	6	49	described	describe	VBN
40119	6	50	,	,	,
40119	6	51	have	have	VBP
40119	6	52	been	be	VBN
40119	6	53	provided	provide	VBN
40119	6	54	.	.	.
40119	7	1	I	-PRON-	PRP
40119	7	2	do	do	VBP
40119	7	3	not	not	RB
40119	7	4	know	know	VB
40119	7	5	that	that	IN
40119	7	6	any	any	DT
40119	7	7	apology	apology	NN
40119	7	8	is	be	VBZ
40119	7	9	needed	need	VBN
40119	7	10	for	for	IN
40119	7	11	offering	offer	VBG
40119	7	12	the	the	DT
40119	7	13	collection	collection	NN
40119	7	14	as	as	IN
40119	7	15	thus	thus	RB
40119	7	16	re	re	NN
40119	7	17	-	-	VBN
40119	7	18	modelled	model	VBN
40119	7	19	to	to	IN
40119	7	20	a	a	DT
40119	7	21	larger	large	JJR
40119	7	22	public	public	NN
40119	7	23	.	.	.
40119	8	1	Though	though	IN
40119	8	2	the	the	DT
40119	8	3	essays	essay	NNS
40119	8	4	are	be	VBP
40119	8	5	,	,	,
40119	8	6	for	for	IN
40119	8	7	the	the	DT
40119	8	8	most	most	JJS
40119	8	9	part	part	NN
40119	8	10	,	,	,
40119	8	11	of	of	IN
40119	8	12	a	a	DT
40119	8	13	popular	popular	JJ
40119	8	14	and	and	CC
40119	8	15	informal	informal	JJ
40119	8	16	character	character	NN
40119	8	17	,	,	,
40119	8	18	they	-PRON-	PRP
40119	8	19	touch	touch	VBP
40119	8	20	upon	upon	IN
40119	8	21	a	a	DT
40119	8	22	number	number	NN
40119	8	23	of	of	IN
40119	8	24	curious	curious	JJ
40119	8	25	matters	matter	NNS
40119	8	26	of	of	IN
40119	8	27	which	which	WDT
40119	8	28	no	no	DT
40119	8	29	readily	readily	RB
40119	8	30	accessible	accessible	JJ
40119	8	31	account	account	NN
40119	8	32	has	have	VBZ
40119	8	33	yet	yet	RB
40119	8	34	appeared	appear	VBN
40119	8	35	,	,	,
40119	8	36	while	while	IN
40119	8	37	,	,	,
40119	8	38	even	even	RB
40119	8	39	in	in	IN
40119	8	40	the	the	DT
40119	8	41	most	most	RBS
40119	8	42	elementary	elementary	JJ
40119	8	43	parts	part	NNS
40119	8	44	,	,	,
40119	8	45	an	an	DT
40119	8	46	attempt	attempt	NN
40119	8	47	has	have	VBZ
40119	8	48	been	be	VBN
40119	8	49	made	make	VBN
40119	8	50	to	to	TO
40119	8	51	handle	handle	VB
40119	8	52	the	the	DT
40119	8	53	subject	subject	NN
40119	8	54	with	with	IN
40119	8	55	some	some	DT
40119	8	56	degree	degree	NN
40119	8	57	of	of	IN
40119	8	58	freshness	freshness	NN
40119	8	59	.	.	.
40119	9	1	The	the	DT
40119	9	2	interesting	interesting	JJ
40119	9	3	subjective	subjective	JJ
40119	9	4	phenomena	phenomenon	NNS
40119	9	5	which	which	WDT
40119	9	6	are	be	VBP
40119	9	7	associated	associate	VBN
40119	9	8	with	with	IN
40119	9	9	the	the	DT
40119	9	10	sense	sense	NN
40119	9	11	of	of	IN
40119	9	12	vision	vision	NN
40119	9	13	do	do	VBP
40119	9	14	not	not	RB
40119	9	15	appear	appear	VB
40119	9	16	to	to	TO
40119	9	17	have	have	VB
40119	9	18	received	receive	VBN
40119	9	19	in	in	IN
40119	9	20	this	this	DT
40119	9	21	country	country	NN
40119	9	22	the	the	DT
40119	9	23	attention	attention	NN
40119	9	24	they	-PRON-	PRP
40119	9	25	deserve	deserve	VBP
40119	9	26	.	.	.
40119	10	1	This	this	DT
40119	10	2	little	little	JJ
40119	10	3	book	book	NN
40119	10	4	may	may	MD
40119	10	5	perhaps	perhaps	RB
40119	10	6	be	be	VB
40119	10	7	of	of	IN
40119	10	8	some	some	DT
40119	10	9	slight	slight	JJ
40119	10	10	service	service	NN
40119	10	11	in	in	IN
40119	10	12	suggesting	suggest	VBG
40119	10	13	to	to	IN
40119	10	14	experimentalists	experimentalist	NNS
40119	10	15	,	,	,
40119	10	16	both	both	CC
40119	10	17	professional	professional	JJ
40119	10	18	and	and	CC
40119	10	19	amateur	amateur	JJ
40119	10	20	,	,	,
40119	10	21	an	an	DT
40119	10	22	attractive	attractive	JJ
40119	10	23	field	field	NN
40119	10	24	of	of	IN
40119	10	25	research	research	NN
40119	10	26	which	which	WDT
40119	10	27	has	have	VBZ
40119	10	28	hitherto	hitherto	VBN
40119	10	29	been	be	VBN
40119	10	30	only	only	RB
40119	10	31	partially	partially	RB
40119	10	32	explored	explore	VBN
40119	10	33	.	.	.
40119	11	1	CONTENTS	content	NNS
40119	11	2	.	.	.
40119	12	1	PAGE	PAGE	NNP
40119	12	2	.	.	.
40119	13	1	CHAPTER	CHAPTER	NNP
40119	13	2	I.	I.	NNP
40119	14	1	Light	light	NN
40119	14	2	and	and	CC
40119	14	3	the	the	DT
40119	14	4	Eye	Eye	NNP
40119	14	5	1	1	CD
40119	14	6	CHAPTER	CHAPTER	NNP
40119	14	7	II	II	NNP
40119	14	8	.	.	.
40119	15	1	Colour	Colour	NNP
40119	15	2	and	and	CC
40119	15	3	its	-PRON-	PRP$
40119	15	4	Perception	Perception	NNP
40119	15	5	39	39	CD
40119	15	6	CHAPTER	chapter	NN
40119	15	7	III	iii	CD
40119	15	8	.	.	.
40119	16	1	Some	some	DT
40119	16	2	Optical	optical	JJ
40119	16	3	Defects	Defects	NNPS
40119	16	4	of	of	IN
40119	16	5	the	the	DT
40119	16	6	Eye	Eye	NNP
40119	16	7	84	84	CD
40119	16	8	CHAPTER	CHAPTER	NNP
40119	16	9	IV	IV	NNP
40119	16	10	.	.	.
40119	17	1	Some	some	DT
40119	17	2	Optical	Optical	NNP
40119	17	3	Illusions	Illusions	NNPS
40119	17	4	130	130	CD
40119	17	5	CHAPTER	CHAPTER	NNP
40119	17	6	V.	V.	NNP
40119	17	7	Curiosities	Curiosities	NNPS
40119	17	8	of	of	IN
40119	17	9	Vision	Vision	NNP
40119	17	10	165	165	CD
40119	17	11	LIST	list	NN
40119	17	12	OF	of	IN
40119	17	13	DIAGRAMS	diagrams	NN
40119	17	14	.	.	.
40119	18	1	FIG	FIG	NNP
40119	18	2	.	.	.
40119	19	1	PAGE	PAGE	NNP
40119	19	2	.	.	.
40119	20	1	1	1	LS
40119	20	2	.	.	.
40119	21	1	Image	image	NN
40119	21	2	of	of	IN
40119	21	3	Slit	Slit	NNP
40119	21	4	and	and	CC
40119	21	5	Spectrum	Spectrum	NNP
40119	21	6	12	12	CD
40119	21	7	2	2	CD
40119	21	8	.	.	.
40119	22	1	Diagram	Diagram	NNP
40119	22	2	of	of	IN
40119	22	3	the	the	DT
40119	22	4	Eye	Eye	NNP
40119	22	5	24	24	CD
40119	22	6	3	3	CD
40119	22	7	.	.	.
40119	23	1	Abney	Abney	NNP
40119	23	2	's	's	POS
40119	23	3	Colour	Colour	NNP
40119	23	4	-	-	HYPH
40119	23	5	patch	patch	NN
40119	23	6	Apparatus	Apparatus	NNP
40119	23	7	45	45	CD
40119	23	8	4	4	CD
40119	23	9	.	.	.
40119	24	1	Partially	partially	RB
40119	24	2	Intercepted	Intercepted	NNP
40119	24	3	Spectrum	Spectrum	NNP
40119	24	4	49	49	CD
40119	24	5	5	5	CD
40119	24	6	.	.	.
40119	25	1	Stencil	Stencil	NNP
40119	25	2	Cards	Cards	NNP
40119	25	3	52	52	CD
40119	25	4	6	6	CD
40119	25	5	.	.	.
40119	26	1	Helmholtz	Helmholtz	NNP
40119	26	2	's	's	POS
40119	26	3	Curves	curve	NNS
40119	26	4	of	of	IN
40119	26	5	Colour	Colour	NNP
40119	26	6	Sensations	Sensations	NNPS
40119	26	7	72	72	CD
40119	26	8	7	7	CD
40119	26	9	.	.	.
40119	27	1	König	König	NNP
40119	27	2	's	's	POS
40119	27	3	Curves	Curves	NNP
40119	27	4	73	73	CD
40119	27	5	8	8	CD
40119	27	6	.	.	.
40119	28	1	Stencil	stencil	NN
40119	28	2	Card	Card	NNP
40119	28	3	for	for	IN
40119	28	4	Complementary	Complementary	NNP
40119	28	5	Colours	Colours	NNP
40119	28	6	77	77	CD
40119	28	7	9	9	CD
40119	28	8	.	.	.
40119	29	1	Another	another	DT
40119	29	2	form	form	NN
40119	29	3	79	79	CD
40119	29	4	10	10	CD
40119	29	5	.	.	.
40119	30	1	Slide	slide	NN
40119	30	2	for	for	IN
40119	30	3	Mixing	mix	VBG
40119	30	4	any	any	DT
40119	30	5	two	two	CD
40119	30	6	Spectral	Spectral	NNP
40119	30	7	Colours	Colours	NNPS
40119	30	8	80	80	CD
40119	30	9	11	11	CD
40119	30	10	.	.	.
40119	31	1	Refraction	refraction	NN
40119	31	2	of	of	IN
40119	31	3	Monochromatic	Monochromatic	NNP
40119	31	4	Light	Light	NNP
40119	31	5	by	by	IN
40119	31	6	Lens	Lens	NNP
40119	31	7	87	87	CD
40119	31	8	12	12	CD
40119	31	9	.	.	.
40119	32	1	Refraction	refraction	NN
40119	32	2	of	of	IN
40119	32	3	Dichromatic	Dichromatic	NNP
40119	32	4	Light	Light	NNP
40119	32	5	89	89	CD
40119	32	6	13	13	CD
40119	32	7	.	.	.
40119	33	1	Narrow	narrow	JJ
40119	33	2	Spectrum	Spectrum	NNP
40119	33	3	as	as	IN
40119	33	4	seen	see	VBN
40119	33	5	from	from	IN
40119	33	6	a	a	DT
40119	33	7	Distance	Distance	NNP
40119	33	8	97	97	CD
40119	33	9	14	14	CD
40119	33	10	.	.	.
40119	34	1	Spectrum	Spectrum	NNP
40119	34	2	formed	form	VBD
40119	34	3	with	with	IN
40119	34	4	V	V	NNP
40119	34	5	-	-	HYPH
40119	34	6	shaped	shaped	JJ
40119	34	7	Slit	Slit	NNP
40119	34	8	103	103	CD
40119	34	9	15	15	CD
40119	34	10	.	.	.
40119	35	1	Bezold	Bezold	NNP
40119	35	2	's	's	POS
40119	35	3	Device	device	NN
40119	35	4	for	for	IN
40119	35	5	Demonstrating	Demonstrating	NNP
40119	35	6	Non	Non	NNP
40119	35	7	-	-	NN
40119	35	8	achromatism	achromatism	NN
40119	35	9	of	of	IN
40119	35	10	the	the	DT
40119	35	11	Eye	Eye	NNP
40119	35	12	108	108	CD
40119	35	13	16	16	CD
40119	35	14	.	.	.
40119	36	1	Crossed	crossed	JJ
40119	36	2	Lines	line	NNS
40119	36	3	showing	show	VBG
40119	36	4	the	the	DT
40119	36	5	Effect	Effect	NNP
40119	36	6	of	of	IN
40119	36	7	Astigmatism	Astigmatism	NNP
40119	36	8	113	113	CD
40119	36	9	17	17	CD
40119	36	10	.	.	.
40119	37	1	Another	another	DT
40119	37	2	Design	design	NN
40119	37	3	showing	show	VBG
40119	37	4	the	the	DT
40119	37	5	same	same	JJ
40119	37	6	114	114	CD
40119	37	7	18	18	CD
40119	37	8	.	.	.
40119	38	1	Star	star	NN
40119	38	2	-	-	HYPH
40119	38	3	like	like	JJ
40119	38	4	Images	image	NNS
40119	38	5	of	of	IN
40119	38	6	Luminous	luminous	JJ
40119	38	7	Points	Points	NNPS
40119	38	8	116	116	CD
40119	38	9	19	19	CD
40119	38	10	.	.	.
40119	39	1	Sutures	suture	NNS
40119	39	2	of	of	IN
40119	39	3	the	the	DT
40119	39	4	Crystalline	Crystalline	NNP
40119	39	5	Lens	Lens	NNP
40119	39	6	117	117	CD
40119	39	7	20	20	CD
40119	39	8	.	.	.
40119	40	1	Multiple	multiple	JJ
40119	40	2	Images	image	NNS
40119	40	3	of	of	IN
40119	40	4	a	a	DT
40119	40	5	Luminous	luminous	JJ
40119	40	6	Point	Point	NNP
40119	40	7	120	120	CD
40119	40	8	21	21	CD
40119	40	9	.	.	.
40119	41	1	The	the	DT
40119	41	2	same	same	JJ
40119	41	3	,	,	,
40119	41	4	showing	show	VBG
40119	41	5	an	an	DT
40119	41	6	increased	increase	VBN
40119	41	7	number	number	NN
40119	41	8	of	of	IN
40119	41	9	Images	image	NNS
40119	41	10	122	122	CD
40119	41	11	22	22	CD
40119	41	12	.	.	.
40119	42	1	The	the	DT
40119	42	2	same	same	JJ
40119	42	3	when	when	WRB
40119	42	4	a	a	DT
40119	42	5	Slit	Slit	NNP
40119	42	6	is	be	VBZ
40119	42	7	held	hold	VBN
40119	42	8	before	before	IN
40119	42	9	the	the	DT
40119	42	10	Eye	Eye	NNP
40119	42	11	123	123	CD
40119	42	12	23	23	CD
40119	42	13	.	.	.
40119	43	1	Multiple	multiple	JJ
40119	43	2	Images	image	NNS
40119	43	3	of	of	IN
40119	43	4	an	an	DT
40119	43	5	Electric	Electric	NNP
40119	43	6	Lamp	Lamp	NNP
40119	43	7	Filament	Filament	NNP
40119	43	8	125	125	CD
40119	43	9	24	24	CD
40119	43	10	.	.	.
40119	44	1	The	the	DT
40119	44	2	same	same	JJ
40119	44	3	seen	see	VBN
40119	44	4	through	through	IN
40119	44	5	a	a	DT
40119	44	6	Slit	Slit	NNP
40119	44	7	126	126	CD
40119	44	8	-	-	SYM
40119	44	9	128	128	CD
40119	44	10	25	25	CD
40119	44	11	.	.	.
40119	45	1	Illusion	illusion	NN
40119	45	2	of	of	IN
40119	45	3	Length	Length	NNP
40119	45	4	132	132	CD
40119	45	5	26	26	CD
40119	45	6	.	.	.
40119	46	1	Another	another	DT
40119	46	2	form	form	NN
40119	46	3	135	135	CD
40119	46	4	27	27	CD
40119	46	5	.	.	.
40119	47	1	Another	another	DT
40119	47	2	form	form	NN
40119	47	3	136	136	CD
40119	47	4	28	28	CD
40119	47	5	.	.	.
40119	48	1	Another	another	DT
40119	48	2	form	form	NN
40119	48	3	137	137	CD
40119	48	4	29	29	CD
40119	48	5	.	.	.
40119	49	1	Another	another	DT
40119	49	2	form	form	NN
40119	49	3	138	138	CD
40119	49	4	30	30	CD
40119	49	5	.	.	.
40119	50	1	Illusion	illusion	NN
40119	50	2	of	of	IN
40119	50	3	Inclination	Inclination	NNP
40119	50	4	143	143	CD
40119	50	5	31	31	CD
40119	50	6	.	.	.
40119	51	1	Zöllner	Zöllner	NNP
40119	51	2	's	's	POS
40119	51	3	Lines	line	NNS
40119	51	4	144	144	CD
40119	51	5	32	32	CD
40119	51	6	.	.	.
40119	52	1	Slide	slide	NN
40119	52	2	for	for	IN
40119	52	3	showing	show	VBG
40119	52	4	Illusions	illusion	NNS
40119	52	5	of	of	IN
40119	52	6	Motions	motion	NNS
40119	52	7	147	147	CD
40119	52	8	33	33	CD
40119	52	9	.	.	.
40119	53	1	Illusion	illusion	NN
40119	53	2	of	of	IN
40119	53	3	Motion	Motion	NNP
40119	53	4	149	149	CD
40119	53	5	34	34	CD
40119	53	6	.	.	.
40119	54	1	Illusion	Illusion	NNP
40119	54	2	of	of	IN
40119	54	3	Luminosity	Luminosity	NNP
40119	54	4	152	152	CD
40119	54	5	35	35	CD
40119	54	6	.	.	.
40119	55	1	Illusion	illusion	NN
40119	55	2	of	of	IN
40119	55	3	Colour	Colour	NNP
40119	55	4	155	155	CD
40119	55	5	36	36	CD
40119	55	6	.	.	.
40119	56	1	Recurrent	recurrent	JJ
40119	56	2	Vision	vision	NN
40119	56	3	demonstrated	demonstrate	VBD
40119	56	4	with	with	IN
40119	56	5	a	a	DT
40119	56	6	Vacuum	Vacuum	NNP
40119	56	7	Tube	Tube	NNP
40119	56	8	176	176	CD
40119	56	9	37	37	CD
40119	56	10	.	.	.
40119	57	1	The	the	DT
40119	57	2	same	same	JJ
40119	57	3	with	with	IN
40119	57	4	a	a	DT
40119	57	5	Rotating	Rotating	NNP
40119	57	6	Disk	Disk	NNP
40119	57	7	178	178	CD
40119	57	8	38	38	CD
40119	57	9	.	.	.
40119	58	1	Apparatus	Apparatus	NNP
40119	58	2	for	for	IN
40119	58	3	showing	show	VBG
40119	58	4	Recurrent	recurrent	JJ
40119	58	5	Vision	vision	NN
40119	58	6	with	with	IN
40119	58	7	Spectral	Spectral	NNP
40119	58	8	Colours	Colours	NNP
40119	58	9	181	181	CD
40119	58	10	39	39	CD
40119	58	11	.	.	.
40119	59	1	Charpentier	Charpentier	NNP
40119	59	2	's	's	POS
40119	59	3	"	"	``
40119	59	4	Dark	Dark	NNP
40119	59	5	Band	Band	NNP
40119	59	6	"	"	''
40119	59	7	187	187	CD
40119	59	8	40	40	CD
40119	59	9	.	.	.
40119	60	1	Charpentier	Charpentier	NNP
40119	60	2	's	's	POS
40119	60	3	Effect	effect	NN
40119	60	4	shown	show	VBN
40119	60	5	with	with	IN
40119	60	6	the	the	DT
40119	60	7	Hand	Hand	NNP
40119	60	8	189	189	CD
40119	60	9	41	41	CD
40119	60	10	.	.	.
40119	61	1	Multiple	Multiple	NNP
40119	61	2	Dark	Dark	NNP
40119	61	3	Bands	Bands	NNP
40119	61	4	192	192	CD
40119	61	5	42	42	CD
40119	61	6	.	.	.
40119	62	1	Temporary	temporary	JJ
40119	62	2	Insensitiveness	insensitiveness	NN
40119	62	3	of	of	IN
40119	62	4	the	the	DT
40119	62	5	Eye	eye	NN
40119	62	6	after	after	IN
40119	62	7	Illumination	illumination	NN
40119	62	8	194	194	CD
40119	62	9	43	43	CD
40119	62	10	.	.	.
40119	63	1	Visual	visual	JJ
40119	63	2	Sensations	sensation	NNS
40119	63	3	attending	attend	VBG
40119	63	4	a	a	DT
40119	63	5	Period	Period	NNP
40119	63	6	of	of	IN
40119	63	7	Illumination	Illumination	NNP
40119	63	8	199	199	CD
40119	63	9	44	44	CD
40119	63	10	.	.	.
40119	64	1	Benham	Benham	NNP
40119	64	2	's	's	POS
40119	64	3	Artificial	Artificial	NNP
40119	64	4	Spectrum	Spectrum	NNP
40119	64	5	Top	Top	NNP
40119	64	6	200	200	CD
40119	64	7	45	45	CD
40119	64	8	.	.	.
40119	65	1	Demonstration	demonstration	NN
40119	65	2	of	of	IN
40119	65	3	Red	Red	NNP
40119	65	4	Colour	Colour	NNP
40119	65	5	-	-	HYPH
40119	65	6	borders	borders	NNP
40119	65	7	205	205	CD
40119	65	8	46	46	CD
40119	65	9	.	.	.
40119	66	1	Black	black	JJ
40119	66	2	and	and	CC
40119	66	3	White	White	NNP
40119	66	4	Screens	Screens	NNP
40119	66	5	for	for	IN
40119	66	6	the	the	DT
40119	66	7	same	same	JJ
40119	66	8	209	209	CD
40119	66	9	47	47	CD
40119	66	10	.	.	.
40119	67	1	Rotating	rotate	VBG
40119	67	2	Disk	Disk	NNP
40119	67	3	for	for	IN
40119	67	4	the	the	DT
40119	67	5	same	same	JJ
40119	67	6	210	210	CD
40119	67	7	48	48	CD
40119	67	8	.	.	.
40119	68	1	Demonstration	demonstration	NN
40119	68	2	of	of	IN
40119	68	3	Blue	Blue	NNP
40119	68	4	Colour	Colour	NNP
40119	68	5	-	-	HYPH
40119	68	6	borders	borders	NNP
40119	68	7	215	215	CD
40119	68	8	49	49	CD
40119	68	9	.	.	.
40119	69	1	Disk	disk	NN
40119	69	2	for	for	IN
40119	69	3	Experiments	experiment	NNS
40119	69	4	on	on	IN
40119	69	5	the	the	DT
40119	69	6	Origin	Origin	NNP
40119	69	7	of	of	IN
40119	69	8	the	the	DT
40119	69	9	Colour	Colour	NNP
40119	69	10	-	-	HYPH
40119	69	11	borders	borders	NNP
40119	69	12	217	217	CD
40119	69	13	50	50	CD
40119	69	14	.	.	.
40119	70	1	Disk	disk	NN
40119	70	2	for	for	IN
40119	70	3	the	the	DT
40119	70	4	Subjective	Subjective	NNP
40119	70	5	Transformation	Transformation	NNP
40119	70	6	of	of	IN
40119	70	7	Colours	Colours	NNP
40119	70	8	224	224	CD
40119	70	9	CHAPTER	chapter	NN
40119	70	10	I.	i.	NN
40119	71	1	LIGHT	LIGHT	NNP
40119	71	2	AND	and	CC
40119	71	3	THE	the	DT
40119	71	4	EYE	EYE	NNP
40119	71	5	.	.	.
40119	72	1	In	in	IN
40119	72	2	the	the	DT
40119	72	3	present	present	JJ
40119	72	4	scientific	scientific	JJ
40119	72	5	age	age	NN
40119	72	6	every	every	DT
40119	72	7	one	one	NN
40119	72	8	knows	know	VBZ
40119	72	9	that	that	IN
40119	72	10	light	light	NN
40119	72	11	is	be	VBZ
40119	72	12	transmitted	transmit	VBN
40119	72	13	across	across	IN
40119	72	14	space	space	NN
40119	72	15	through	through	IN
40119	72	16	the	the	DT
40119	72	17	medium	medium	NN
40119	72	18	of	of	IN
40119	72	19	the	the	DT
40119	72	20	luminiferous	luminiferous	JJ
40119	72	21	ether	ether	NN
40119	72	22	.	.	.
40119	73	1	This	this	DT
40119	73	2	ether	ether	NN
40119	73	3	fills	fill	VBZ
40119	73	4	the	the	DT
40119	73	5	whole	whole	NN
40119	73	6	of	of	IN
40119	73	7	the	the	DT
40119	73	8	known	know	VBN
40119	73	9	universe	universe	NN
40119	73	10	,	,	,
40119	73	11	as	as	RB
40119	73	12	far	far	RB
40119	73	13	at	at	IN
40119	73	14	least	least	JJS
40119	73	15	as	as	IN
40119	73	16	the	the	DT
40119	73	17	remotest	remotest	NN
40119	73	18	star	star	NN
40119	73	19	visible	visible	JJ
40119	73	20	in	in	IN
40119	73	21	the	the	DT
40119	73	22	most	most	RBS
40119	73	23	powerful	powerful	JJ
40119	73	24	telescopes	telescope	NNS
40119	73	25	,	,	,
40119	73	26	and	and	CC
40119	73	27	is	be	VBZ
40119	73	28	often	often	RB
40119	73	29	said	say	VBN
40119	73	30	to	to	TO
40119	73	31	be	be	VB
40119	73	32	possessed	possess	VBN
40119	73	33	of	of	IN
40119	73	34	properties	property	NNS
40119	73	35	of	of	IN
40119	73	36	so	so	RB
40119	73	37	paradoxical	paradoxical	JJ
40119	73	38	a	a	DT
40119	73	39	character	character	NN
40119	73	40	that	that	IN
40119	73	41	their	-PRON-	PRP$
40119	73	42	unreserved	unreserved	JJ
40119	73	43	acceptance	acceptance	NN
40119	73	44	has	have	VBZ
40119	73	45	always	always	RB
40119	73	46	been	be	VBN
40119	73	47	a	a	DT
40119	73	48	matter	matter	NN
40119	73	49	of	of	IN
40119	73	50	considerable	considerable	JJ
40119	73	51	difficulty	difficulty	NN
40119	73	52	.	.	.
40119	74	1	The	the	DT
40119	74	2	ether	ether	NN
40119	74	3	is	be	VBZ
40119	74	4	a	a	DT
40119	74	5	thing	thing	NN
40119	74	6	of	of	IN
40119	74	7	immeasurable	immeasurable	JJ
40119	74	8	tenuity	tenuity	NN
40119	74	9	,	,	,
40119	74	10	being	be	VBG
40119	74	11	many	many	JJ
40119	74	12	millions	million	NNS
40119	74	13	of	of	IN
40119	74	14	times	time	NNS
40119	74	15	rarer	rare	JJR
40119	74	16	than	than	IN
40119	74	17	the	the	DT
40119	74	18	most	most	RBS
40119	74	19	perfect	perfect	JJ
40119	74	20	vacuum	vacuum	NN
40119	74	21	of	of	IN
40119	74	22	which	which	WDT
40119	74	23	we	-PRON-	PRP
40119	74	24	have	have	VBP
40119	74	25	any	any	DT
40119	74	26	experience	experience	NN
40119	74	27	:	:	:
40119	74	28	it	-PRON-	PRP
40119	74	29	offers	offer	VBZ
40119	74	30	no	no	DT
40119	74	31	sensible	sensible	JJ
40119	74	32	obstruction	obstruction	NN
40119	74	33	to	to	IN
40119	74	34	the	the	DT
40119	74	35	movements	movement	NNS
40119	74	36	of	of	IN
40119	74	37	the	the	DT
40119	74	38	celestial	celestial	JJ
40119	74	39	bodies	body	NNS
40119	74	40	,	,	,
40119	74	41	and	and	CC
40119	74	42	even	even	RB
40119	74	43	the	the	DT
40119	74	44	flimsiest	flimsy	JJS
40119	74	45	of	of	IN
40119	74	46	material	material	JJ
40119	74	47	substances	substance	NNS
40119	74	48	can	can	MD
40119	74	49	pass	pass	VB
40119	74	50	through	through	IN
40119	74	51	it	-PRON-	PRP
40119	74	52	as	as	IN
40119	74	53	if	if	IN
40119	74	54	it	-PRON-	PRP
40119	74	55	were	be	VBD
40119	74	56	nothing	nothing	NN
40119	74	57	.	.	.
40119	75	1	Yet	yet	CC
40119	75	2	we	-PRON-	PRP
40119	75	3	have	have	VBP
40119	75	4	been	be	VBN
40119	75	5	taught	teach	VBN
40119	75	6	that	that	IN
40119	75	7	this	this	DT
40119	75	8	same	same	JJ
40119	75	9	ether	ether	NN
40119	75	10	is	be	VBZ
40119	75	11	an	an	DT
40119	75	12	elastic	elastic	JJ
40119	75	13	solid	solid	JJ
40119	75	14	with	with	IN
40119	75	15	a	a	DT
40119	75	16	great	great	JJ
40119	75	17	degree	degree	NN
40119	75	18	of	of	IN
40119	75	19	rigidity	rigidity	NN
40119	75	20	,	,	,
40119	75	21	its	-PRON-	PRP$
40119	75	22	resistance	resistance	NN
40119	75	23	to	to	IN
40119	75	24	distortion	distortion	NN
40119	75	25	being	be	VBG
40119	75	26	,	,	,
40119	75	27	in	in	IN
40119	75	28	comparison	comparison	NN
40119	75	29	with	with	IN
40119	75	30	the	the	DT
40119	75	31	density	density	NN
40119	75	32	,	,	,
40119	75	33	nearly	nearly	RB
40119	75	34	ten	ten	CD
40119	75	35	thousand	thousand	CD
40119	75	36	million	million	CD
40119	75	37	times	time	NNS
40119	75	38	greater	great	JJR
40119	75	39	than	than	IN
40119	75	40	that	that	DT
40119	75	41	of	of	IN
40119	75	42	steel	steel	NN
40119	75	43	:	:	:
40119	75	44	thus	thus	RB
40119	75	45	was	be	VBD
40119	75	46	explained	explain	VBN
40119	75	47	the	the	DT
40119	75	48	prodigious	prodigious	JJ
40119	75	49	speed	speed	NN
40119	75	50	with	with	IN
40119	75	51	which	which	WDT
40119	75	52	it	-PRON-	PRP
40119	75	53	propagates	propagate	VBZ
40119	75	54	transverse	transverse	JJ
40119	75	55	vibrations	vibration	NNS
40119	75	56	.	.	.
40119	76	1	A	a	DT
40119	76	2	few	few	JJ
40119	76	3	years	year	NNS
40119	76	4	ago	ago	RB
40119	76	5	,	,	,
40119	76	6	a	a	DT
40119	76	7	distinguished	distinguished	JJ
40119	76	8	leader	leader	NN
40119	76	9	in	in	IN
40119	76	10	science	science	NN
40119	76	11	endeavoured	endeavour	VBN
40119	76	12	in	in	IN
40119	76	13	the	the	DT
40119	76	14	course	course	NN
40119	76	15	of	of	IN
40119	76	16	a	a	DT
40119	76	17	lecture	lecture	NN
40119	76	18	to	to	TO
40119	76	19	illustrate	illustrate	VB
40119	76	20	these	these	DT
40119	76	21	apparently	apparently	RB
40119	76	22	incompatible	incompatible	JJ
40119	76	23	properties	property	NNS
40119	76	24	with	with	IN
40119	76	25	the	the	DT
40119	76	26	aid	aid	NN
40119	76	27	of	of	IN
40119	76	28	a	a	DT
40119	76	29	large	large	JJ
40119	76	30	slab	slab	NN
40119	76	31	of	of	IN
40119	76	32	Burgundy	Burgundy	NNP
40119	76	33	pitch	pitch	NN
40119	76	34	.	.	.
40119	77	1	He	-PRON-	PRP
40119	77	2	showed	show	VBD
40119	77	3	that	that	IN
40119	77	4	the	the	DT
40119	77	5	pitch	pitch	NN
40119	77	6	was	be	VBD
40119	77	7	hard	hard	JJ
40119	77	8	and	and	CC
40119	77	9	brittle	brittle	JJ
40119	77	10	,	,	,
40119	77	11	yet	yet	RB
40119	77	12	,	,	,
40119	77	13	as	as	IN
40119	77	14	he	-PRON-	PRP
40119	77	15	said	say	VBD
40119	77	16	,	,	,
40119	77	17	a	a	DT
40119	77	18	bullet	bullet	NN
40119	77	19	laid	lay	VBN
40119	77	20	upon	upon	IN
40119	77	21	the	the	DT
40119	77	22	slab	slab	NN
40119	77	23	would	would	MD
40119	77	24	,	,	,
40119	77	25	in	in	IN
40119	77	26	the	the	DT
40119	77	27	course	course	NN
40119	77	28	of	of	IN
40119	77	29	a	a	DT
40119	77	30	few	few	JJ
40119	77	31	months	month	NNS
40119	77	32	,	,	,
40119	77	33	sink	sink	VBP
40119	77	34	into	into	IN
40119	77	35	and	and	CC
40119	77	36	penetrate	penetrate	VB
40119	77	37	through	through	IN
40119	77	38	it	-PRON-	PRP
40119	77	39	,	,	,
40119	77	40	the	the	DT
40119	77	41	hard	hard	JJ
40119	77	42	brittle	brittle	JJ
40119	77	43	mass	mass	NN
40119	77	44	being	be	VBG
40119	77	45	really	really	RB
40119	77	46	a	a	DT
40119	77	47	very	very	RB
40119	77	48	viscous	viscous	JJ
40119	77	49	fluid	fluid	NN
40119	77	50	.	.	.
40119	78	1	The	the	DT
40119	78	2	ether	ether	NN
40119	78	3	,	,	,
40119	78	4	it	-PRON-	PRP
40119	78	5	was	be	VBD
40119	78	6	suggested	suggest	VBN
40119	78	7	,	,	,
40119	78	8	resembled	resemble	VBD
40119	78	9	the	the	DT
40119	78	10	pitch	pitch	NN
40119	78	11	in	in	IN
40119	78	12	having	have	VBG
40119	78	13	the	the	DT
40119	78	14	rigidity	rigidity	NN
40119	78	15	of	of	IN
40119	78	16	a	a	DT
40119	78	17	solid	solid	JJ
40119	78	18	and	and	CC
40119	78	19	yet	yet	RB
40119	78	20	gradually	gradually	RB
40119	78	21	yielding	yield	VBG
40119	78	22	;	;	:
40119	78	23	it	-PRON-	PRP
40119	78	24	was	be	VBD
40119	78	25	,	,	,
40119	78	26	in	in	IN
40119	78	27	fact	fact	NN
40119	78	28	,	,	,
40119	78	29	a	a	DT
40119	78	30	rigid	rigid	JJ
40119	78	31	solid	solid	JJ
40119	78	32	for	for	IN
40119	78	33	luminiferous	luminiferous	JJ
40119	78	34	vibrations	vibration	NNS
40119	78	35	executed	execute	VBN
40119	78	36	in	in	IN
40119	78	37	about	about	RB
40119	78	38	a	a	DT
40119	78	39	hundred	hundred	CD
40119	78	40	-	-	HYPH
40119	78	41	billionth	billionth	JJ
40119	78	42	part	part	NN
40119	78	43	of	of	IN
40119	78	44	a	a	DT
40119	78	45	second	second	JJ
40119	78	46	,	,	,
40119	78	47	and	and	CC
40119	78	48	at	at	IN
40119	78	49	the	the	DT
40119	78	50	same	same	JJ
40119	78	51	time	time	NN
40119	78	52	highly	highly	RB
40119	78	53	mobile	mobile	JJ
40119	78	54	to	to	IN
40119	78	55	bodies	body	NNS
40119	78	56	like	like	IN
40119	78	57	the	the	DT
40119	78	58	earth	earth	NN
40119	78	59	going	go	VBG
40119	78	60	through	through	IN
40119	78	61	it	-PRON-	PRP
40119	78	62	at	at	IN
40119	78	63	the	the	DT
40119	78	64	rate	rate	NN
40119	78	65	of	of	IN
40119	78	66	twenty	twenty	CD
40119	78	67	miles	mile	NNS
40119	78	68	in	in	IN
40119	78	69	a	a	DT
40119	78	70	second	second	NN
40119	78	71	.	.	.
40119	79	1	This	this	DT
40119	79	2	illustration	illustration	NN
40119	79	3	,	,	,
40119	79	4	felicitous	felicitous	JJ
40119	79	5	as	as	IN
40119	79	6	it	-PRON-	PRP
40119	79	7	is	be	VBZ
40119	79	8	,	,	,
40119	79	9	would	would	MD
40119	79	10	,	,	,
40119	79	11	however	however	RB
40119	79	12	,	,	,
40119	79	13	scarcely	scarcely	RB
40119	79	14	avail	avail	VBP
40119	79	15	to	to	TO
40119	79	16	force	force	VB
40119	79	17	conviction	conviction	NN
40119	79	18	upon	upon	IN
40119	79	19	an	an	DT
40119	79	20	unwilling	unwilling	JJ
40119	79	21	mind	mind	NN
40119	79	22	,	,	,
40119	79	23	even	even	RB
40119	79	24	if	if	IN
40119	79	25	it	-PRON-	PRP
40119	79	26	were	be	VBD
40119	79	27	admitted	admit	VBN
40119	79	28	that	that	IN
40119	79	29	the	the	DT
40119	79	30	period	period	NN
40119	79	31	of	of	IN
40119	79	32	an	an	DT
40119	79	33	ether	ether	NN
40119	79	34	wave	wave	NN
40119	79	35	is	be	VBZ
40119	79	36	necessarily	necessarily	RB
40119	79	37	no	no	DT
40119	79	38	more	more	JJR
40119	79	39	than	than	IN
40119	79	40	a	a	DT
40119	79	41	hundred	hundred	CD
40119	79	42	-	-	HYPH
40119	79	43	billionth	billionth	NN
40119	79	44	of	of	IN
40119	79	45	a	a	DT
40119	79	46	second	second	JJ
40119	79	47	or	or	CC
40119	79	48	thereabouts	thereabout	NNS
40119	79	49	,	,	,
40119	79	50	which	which	WDT
40119	79	51	is	be	VBZ
40119	79	52	probably	probably	RB
40119	79	53	very	very	RB
40119	79	54	far	far	RB
40119	79	55	from	from	IN
40119	79	56	the	the	DT
40119	79	57	truth	truth	NN
40119	79	58	.	.	.
40119	80	1	But	but	CC
40119	80	2	,	,	,
40119	80	3	indeed	indeed	RB
40119	80	4	,	,	,
40119	80	5	the	the	DT
40119	80	6	elastic	elastic	JJ
40119	80	7	solid	solid	JJ
40119	80	8	theory	theory	NN
40119	80	9	of	of	IN
40119	80	10	the	the	DT
40119	80	11	ether	ether	NN
40119	80	12	has	have	VBZ
40119	80	13	failed	fail	VBN
40119	80	14	to	to	TO
40119	80	15	give	give	VB
40119	80	16	a	a	DT
40119	80	17	consistent	consistent	JJ
40119	80	18	explanation	explanation	NN
40119	80	19	of	of	IN
40119	80	20	some	some	DT
40119	80	21	of	of	IN
40119	80	22	the	the	DT
40119	80	23	most	most	RBS
40119	80	24	important	important	JJ
40119	80	25	points	point	NNS
40119	80	26	in	in	IN
40119	80	27	observational	observational	JJ
40119	80	28	optics	optic	NNS
40119	80	29	;	;	:
40119	80	30	and	and	CC
40119	80	31	,	,	,
40119	80	32	in	in	IN
40119	80	33	spite	spite	NN
40119	80	34	of	of	IN
40119	80	35	the	the	DT
40119	80	36	exalted	exalted	JJ
40119	80	37	position	position	NN
40119	80	38	which	which	WDT
40119	80	39	it	-PRON-	PRP
40119	80	40	has	have	VBZ
40119	80	41	held	hold	VBN
40119	80	42	,	,	,
40119	80	43	it	-PRON-	PRP
40119	80	44	can	can	MD
40119	80	45	now	now	RB
40119	80	46	hardly	hardly	RB
40119	80	47	be	be	VB
40119	80	48	regarded	regard	VBN
40119	80	49	as	as	IN
40119	80	50	representing	represent	VBG
40119	80	51	a	a	DT
40119	80	52	physical	physical	JJ
40119	80	53	reality	reality	NN
40119	80	54	.	.	.
40119	81	1	The	the	DT
40119	81	2	famous	famous	JJ
40119	81	3	researches	research	NNS
40119	81	4	of	of	IN
40119	81	5	Hertz	Hertz	NNP
40119	81	6	have	have	VBP
40119	81	7	established	establish	VBN
40119	81	8	upon	upon	IN
40119	81	9	a	a	DT
40119	81	10	secure	secure	JJ
40119	81	11	experimental	experimental	JJ
40119	81	12	basis	basis	NN
40119	81	13	the	the	DT
40119	81	14	hypothesis	hypothesis	NN
40119	81	15	of	of	IN
40119	81	16	Maxwell	Maxwell	NNP
40119	81	17	that	that	IN
40119	81	18	light	light	NN
40119	81	19	is	be	VBZ
40119	81	20	an	an	DT
40119	81	21	electro	electro	JJ
40119	81	22	-	-	HYPH
40119	81	23	magnetic	magnetic	JJ
40119	81	24	phenomenon	phenomenon	NN
40119	81	25	.	.	.
40119	82	1	Such	such	JJ
40119	82	2	electrical	electrical	JJ
40119	82	3	radiations	radiation	NNS
40119	82	4	as	as	IN
40119	82	5	can	can	MD
40119	82	6	be	be	VB
40119	82	7	produced	produce	VBN
40119	82	8	by	by	IN
40119	82	9	suitable	suitable	JJ
40119	82	10	instruments	instrument	NNS
40119	82	11	are	be	VBP
40119	82	12	found	find	VBN
40119	82	13	to	to	TO
40119	82	14	behave	behave	VB
40119	82	15	in	in	IN
40119	82	16	exactly	exactly	RB
40119	82	17	the	the	DT
40119	82	18	same	same	JJ
40119	82	19	manner	manner	NN
40119	82	20	as	as	IN
40119	82	21	those	those	DT
40119	82	22	to	to	TO
40119	82	23	which	which	WDT
40119	82	24	light	light	NN
40119	82	25	is	be	VBZ
40119	82	26	due	due	JJ
40119	82	27	.	.	.
40119	83	1	They	-PRON-	PRP
40119	83	2	travel	travel	VBP
40119	83	3	through	through	IN
40119	83	4	space	space	NN
40119	83	5	with	with	IN
40119	83	6	the	the	DT
40119	83	7	same	same	JJ
40119	83	8	speed	speed	NN
40119	83	9	;	;	:
40119	83	10	they	-PRON-	PRP
40119	83	11	can	can	MD
40119	83	12	be	be	VB
40119	83	13	reflected	reflect	VBN
40119	83	14	,	,	,
40119	83	15	refracted	refract	VBN
40119	83	16	,	,	,
40119	83	17	polarised	polarise	VBD
40119	83	18	,	,	,
40119	83	19	and	and	CC
40119	83	20	made	make	VBN
40119	83	21	to	to	TO
40119	83	22	exhibit	exhibit	VB
40119	83	23	interference	interference	NN
40119	83	24	effects	effect	NNS
40119	83	25	.	.	.
40119	84	1	No	no	DT
40119	84	2	fact	fact	NN
40119	84	3	in	in	IN
40119	84	4	physics	physics	NN
40119	84	5	can	can	MD
40119	84	6	be	be	VB
40119	84	7	much	much	RB
40119	84	8	more	more	RBR
40119	84	9	firmly	firmly	RB
40119	84	10	established	establish	VBN
40119	84	11	than	than	IN
40119	84	12	that	that	DT
40119	84	13	of	of	IN
40119	84	14	the	the	DT
40119	84	15	essential	essential	JJ
40119	84	16	identity	identity	NN
40119	84	17	of	of	IN
40119	84	18	light	light	NN
40119	84	19	and	and	CC
40119	84	20	electricity	electricity	NN
40119	84	21	.	.	.
40119	85	1	It	-PRON-	PRP
40119	85	2	follows	follow	VBZ
40119	85	3	then	then	RB
40119	85	4	that	that	IN
40119	85	5	the	the	DT
40119	85	6	displacements	displacement	NNS
40119	85	7	of	of	IN
40119	85	8	the	the	DT
40119	85	9	ether	ether	NN
40119	85	10	which	which	WDT
40119	85	11	constitute	constitute	VBP
40119	85	12	light	light	NN
40119	85	13	-	-	HYPH
40119	85	14	waves	wave	NNS
40119	85	15	are	be	VBP
40119	85	16	not	not	RB
40119	85	17	necessarily	necessarily	RB
40119	85	18	of	of	IN
40119	85	19	the	the	DT
40119	85	20	same	same	JJ
40119	85	21	gross	gross	JJ
40119	85	22	mechanical	mechanical	JJ
40119	85	23	nature	nature	NN
40119	85	24	as	as	IN
40119	85	25	those	those	DT
40119	85	26	which	which	WDT
40119	85	27	we	-PRON-	PRP
40119	85	28	see	see	VBP
40119	85	29	on	on	IN
40119	85	30	the	the	DT
40119	85	31	surface	surface	NN
40119	85	32	of	of	IN
40119	85	33	water	water	NN
40119	85	34	,	,	,
40119	85	35	or	or	CC
40119	85	36	which	which	WDT
40119	85	37	occur	occur	VBP
40119	85	38	in	in	IN
40119	85	39	the	the	DT
40119	85	40	air	air	NN
40119	85	41	when	when	WRB
40119	85	42	sound	sound	NNP
40119	85	43	is	be	VBZ
40119	85	44	transmitted	transmit	VBN
40119	85	45	through	through	IN
40119	85	46	it	-PRON-	PRP
40119	85	47	.	.	.
40119	86	1	The	the	DT
40119	86	2	displacements	displacement	NNS
40119	86	3	which	which	WDT
40119	86	4	the	the	DT
40119	86	5	ether	ether	NN
40119	86	6	undergoes	undergoe	NNS
40119	86	7	are	be	VBP
40119	86	8	not	not	RB
40119	86	9	mechanical	mechanical	JJ
40119	86	10	--	--	:
40119	86	11	primarily	primarily	RB
40119	86	12	at	at	IN
40119	86	13	all	all	DT
40119	86	14	events	event	NNS
40119	86	15	--	--	:
40119	86	16	but	but	CC
40119	86	17	electrical	electrical	JJ
40119	86	18	.	.	.
40119	87	1	Every	every	DT
40119	87	2	one	one	NN
40119	87	3	knows	know	VBZ
40119	87	4	what	what	WP
40119	87	5	a	a	DT
40119	87	6	simple	simple	JJ
40119	87	7	mechanical	mechanical	JJ
40119	87	8	displacement	displacement	NN
40119	87	9	is	be	VBZ
40119	87	10	.	.	.
40119	88	1	If	if	IN
40119	88	2	we	-PRON-	PRP
40119	88	3	push	push	VBP
40119	88	4	aside	aside	RB
40119	88	5	the	the	DT
40119	88	6	bob	bob	NN
40119	88	7	of	of	IN
40119	88	8	a	a	DT
40119	88	9	suspended	suspend	VBN
40119	88	10	pendulum	pendulum	NN
40119	88	11	,	,	,
40119	88	12	that	that	DT
40119	88	13	is	be	VBZ
40119	88	14	a	a	DT
40119	88	15	mechanical	mechanical	JJ
40119	88	16	displacement	displacement	NN
40119	88	17	.	.	.
40119	89	1	But	but	CC
40119	89	2	if	if	IN
40119	89	3	we	-PRON-	PRP
40119	89	4	electrify	electrify	VBP
40119	89	5	a	a	DT
40119	89	6	stick	stick	NN
40119	89	7	of	of	IN
40119	89	8	sealing	seal	VBG
40119	89	9	wax	wax	NN
40119	89	10	by	by	IN
40119	89	11	rubbing	rub	VBG
40119	89	12	it	-PRON-	PRP
40119	89	13	with	with	IN
40119	89	14	flannel	flannel	NN
40119	89	15	,	,	,
40119	89	16	the	the	DT
40119	89	17	surrounding	surround	VBG
40119	89	18	ether	ether	NN
40119	89	19	undergoes	undergoe	NNS
40119	89	20	electric	electric	JJ
40119	89	21	displacement	displacement	NN
40119	89	22	,	,	,
40119	89	23	and	and	CC
40119	89	24	no	no	DT
40119	89	25	one	one	NN
40119	89	26	understands	understand	VBZ
40119	89	27	what	what	WP
40119	89	28	electric	electric	JJ
40119	89	29	displacement	displacement	NN
40119	89	30	really	really	RB
40119	89	31	is	be	VBZ
40119	89	32	.	.	.
40119	90	1	Ultimately	ultimately	RB
40119	90	2	,	,	,
40119	90	3	no	no	RB
40119	90	4	doubt	doubt	RB
40119	90	5	,	,	,
40119	90	6	it	-PRON-	PRP
40119	90	7	will	will	MD
40119	90	8	turn	turn	VB
40119	90	9	out	out	RP
40119	90	10	to	to	TO
40119	90	11	be	be	VB
40119	90	12	of	of	IN
40119	90	13	a	a	DT
40119	90	14	mechanical	mechanical	JJ
40119	90	15	nature	nature	NN
40119	90	16	,	,	,
40119	90	17	but	but	CC
40119	90	18	it	-PRON-	PRP
40119	90	19	is	be	VBZ
40119	90	20	almost	almost	RB
40119	90	21	certainly	certainly	RB
40119	90	22	not	not	RB
40119	90	23	a	a	DT
40119	90	24	simple	simple	JJ
40119	90	25	bodily	bodily	JJ
40119	90	26	distortion	distortion	NN
40119	90	27	such	such	JJ
40119	90	28	as	as	IN
40119	90	29	is	be	VBZ
40119	90	30	caused	cause	VBN
40119	90	31	,	,	,
40119	90	32	for	for	IN
40119	90	33	example	example	NN
40119	90	34	,	,	,
40119	90	35	when	when	WRB
40119	90	36	one	one	PRP
40119	90	37	presses	press	VBZ
40119	90	38	a	a	DT
40119	90	39	jelly	jelly	NN
40119	90	40	with	with	IN
40119	90	41	the	the	DT
40119	90	42	finger	finger	NN
40119	90	43	.	.	.
40119	91	1	Since	since	IN
40119	91	2	,	,	,
40119	91	3	then	then	RB
40119	91	4	,	,	,
40119	91	5	it	-PRON-	PRP
40119	91	6	is	be	VBZ
40119	91	7	no	no	DT
40119	91	8	longer	long	RBR
40119	91	9	necessary	necessary	JJ
40119	91	10	to	to	TO
40119	91	11	assume	assume	VB
40119	91	12	that	that	IN
40119	91	13	the	the	DT
40119	91	14	exceedingly	exceedingly	RB
40119	91	15	rare	rare	JJ
40119	91	16	and	and	CC
40119	91	17	subtile	subtile	NN
40119	91	18	ether	ether	NN
40119	91	19	is	be	VBZ
40119	91	20	a	a	DT
40119	91	21	jelly	jelly	NN
40119	91	22	-	-	HYPH
40119	91	23	like	like	JJ
40119	91	24	solid	solid	JJ
40119	91	25	in	in	IN
40119	91	26	order	order	NN
40119	91	27	to	to	TO
40119	91	28	account	account	VB
40119	91	29	for	for	IN
40119	91	30	the	the	DT
40119	91	31	manner	manner	NN
40119	91	32	in	in	IN
40119	91	33	which	which	WDT
40119	91	34	it	-PRON-	PRP
40119	91	35	transmits	transmit	VBZ
40119	91	36	light	light	NN
40119	91	37	,	,	,
40119	91	38	one	one	CD
40119	91	39	of	of	IN
40119	91	40	the	the	DT
40119	91	41	most	most	RBS
40119	91	42	serious	serious	JJ
40119	91	43	difficulties	difficulty	NNS
40119	91	44	in	in	IN
40119	91	45	the	the	DT
40119	91	46	way	way	NN
40119	91	47	of	of	IN
40119	91	48	its	-PRON-	PRP$
40119	91	49	acceptance	acceptance	NN
40119	91	50	is	be	VBZ
40119	91	51	removed	remove	VBN
40119	91	52	.	.	.
40119	92	1	It	-PRON-	PRP
40119	92	2	is	be	VBZ
40119	92	3	true	true	JJ
40119	92	4	that	that	IN
40119	92	5	nothing	nothing	NN
40119	92	6	is	be	VBZ
40119	92	7	definitely	definitely	RB
40119	92	8	known	know	VBN
40119	92	9	concerning	concern	VBG
40119	92	10	the	the	DT
40119	92	11	mechanism	mechanism	NN
40119	92	12	which	which	WDT
40119	92	13	takes	take	VBZ
40119	92	14	the	the	DT
40119	92	15	place	place	NN
40119	92	16	of	of	IN
40119	92	17	the	the	DT
40119	92	18	simple	simple	JJ
40119	92	19	transverse	transverse	JJ
40119	92	20	vibrations	vibration	NNS
40119	92	21	formerly	formerly	RB
40119	92	22	postulated	postulate	VBN
40119	92	23	,	,	,
40119	92	24	but	but	CC
40119	92	25	every	every	DT
40119	92	26	one	one	NN
40119	92	27	will	will	MD
40119	92	28	admit	admit	VB
40119	92	29	that	that	IN
40119	92	30	it	-PRON-	PRP
40119	92	31	is	be	VBZ
40119	92	32	far	far	RB
40119	92	33	easier	easy	JJR
40119	92	34	to	to	TO
40119	92	35	believe	believe	VB
40119	92	36	in	in	IN
40119	92	37	what	what	WP
40119	92	38	we	-PRON-	PRP
40119	92	39	know	know	VBP
40119	92	40	nothing	nothing	NN
40119	92	41	about	about	IN
40119	92	42	than	than	IN
40119	92	43	in	in	IN
40119	92	44	what	what	WP
40119	92	45	we	-PRON-	PRP
40119	92	46	know	know	VBP
40119	92	47	to	to	TO
40119	92	48	be	be	VB
40119	92	49	impossible	impossible	JJ
40119	92	50	.	.	.
40119	93	1	All	all	DT
40119	93	2	scientific	scientific	JJ
40119	93	3	men	man	NNS
40119	93	4	are	be	VBP
40119	93	5	in	in	IN
40119	93	6	fact	fact	NN
40119	93	7	agreed	agree	VBN
40119	93	8	in	in	IN
40119	93	9	recognising	recognise	VBG
40119	93	10	the	the	DT
40119	93	11	real	real	JJ
40119	93	12	and	and	CC
40119	93	13	genuine	genuine	JJ
40119	93	14	existence	existence	NN
40119	93	15	throughout	throughout	IN
40119	93	16	space	space	NN
40119	93	17	of	of	IN
40119	93	18	an	an	DT
40119	93	19	ether	ether	NN
40119	93	20	capable	capable	JJ
40119	93	21	,	,	,
40119	93	22	among	among	IN
40119	93	23	other	other	JJ
40119	93	24	things	thing	NNS
40119	93	25	,	,	,
40119	93	26	of	of	IN
40119	93	27	transmitting	transmit	VBG
40119	93	28	at	at	IN
40119	93	29	the	the	DT
40119	93	30	speed	speed	NN
40119	93	31	of	of	IN
40119	93	32	186,000	186,000	CD
40119	93	33	miles	mile	NNS
40119	93	34	per	per	IN
40119	93	35	second	second	JJ
40119	93	36	disturbances	disturbance	NNS
40119	93	37	which	which	WDT
40119	93	38	,	,	,
40119	93	39	whatever	whatever	WDT
40119	93	40	their	-PRON-	PRP$
40119	93	41	precise	precise	JJ
40119	93	42	nature	nature	NN
40119	93	43	,	,	,
40119	93	44	are	be	VBP
40119	93	45	of	of	IN
40119	93	46	the	the	DT
40119	93	47	kind	kind	NN
40119	93	48	which	which	WDT
40119	93	49	mathematicians	mathematician	NNS
40119	93	50	are	be	VBP
40119	93	51	accustomed	accustom	VBN
40119	93	52	to	to	TO
40119	93	53	call	call	VB
40119	93	54	waves	wave	NNS
40119	93	55	.	.	.
40119	94	1	How	how	WRB
40119	94	2	an	an	DT
40119	94	3	ether	ether	NN
40119	94	4	wave	wave	NN
40119	94	5	is	be	VBZ
40119	94	6	constituted	constituted	JJ
40119	94	7	will	will	MD
40119	94	8	probably	probably	RB
40119	94	9	be	be	VB
40119	94	10	known	know	VBN
40119	94	11	when	when	WRB
40119	94	12	we	-PRON-	PRP
40119	94	13	have	have	VBP
40119	94	14	found	find	VBN
40119	94	15	out	out	RP
40119	94	16	exactly	exactly	RB
40119	94	17	what	what	WP
40119	94	18	electricity	electricity	NN
40119	94	19	is	be	VBZ
40119	94	20	:	:	:
40119	94	21	and	and	CC
40119	94	22	that	that	DT
40119	94	23	may	may	MD
40119	94	24	be	be	VB
40119	94	25	never	never	RB
40119	94	26	.	.	.
40119	95	1	The	the	DT
40119	95	2	sensation	sensation	NN
40119	95	3	of	of	IN
40119	95	4	light	light	JJ
40119	95	5	results	result	NNS
40119	95	6	from	from	IN
40119	95	7	the	the	DT
40119	95	8	action	action	NN
40119	95	9	of	of	IN
40119	95	10	ether	ether	NN
40119	95	11	waves	wave	NNS
40119	95	12	upon	upon	IN
40119	95	13	the	the	DT
40119	95	14	organism	organism	NN
40119	95	15	of	of	IN
40119	95	16	the	the	DT
40119	95	17	eye	eye	NN
40119	95	18	,	,	,
40119	95	19	but	but	CC
40119	95	20	the	the	DT
40119	95	21	old	old	JJ
40119	95	22	belief	belief	NN
40119	95	23	that	that	IN
40119	95	24	the	the	DT
40119	95	25	sensation	sensation	NN
40119	95	26	was	be	VBD
40119	95	27	primarily	primarily	RB
40119	95	28	due	due	JJ
40119	95	29	to	to	IN
40119	95	30	a	a	DT
40119	95	31	series	series	NN
40119	95	32	of	of	IN
40119	95	33	mere	mere	JJ
40119	95	34	mechanical	mechanical	JJ
40119	95	35	impulses	impulse	NNS
40119	95	36	or	or	CC
40119	95	37	beats	beat	NNS
40119	95	38	,	,	,
40119	95	39	just	just	RB
40119	95	40	as	as	IN
40119	95	41	that	that	DT
40119	95	42	of	of	IN
40119	95	43	sound	sound	JJ
40119	95	44	results	result	NNS
40119	95	45	from	from	IN
40119	95	46	the	the	DT
40119	95	47	mechanical	mechanical	JJ
40119	95	48	impact	impact	NN
40119	95	49	of	of	IN
40119	95	50	air	air	NN
40119	95	51	-	-	HYPH
40119	95	52	waves	wave	NNS
40119	95	53	upon	upon	IN
40119	95	54	the	the	DT
40119	95	55	drum	drum	NN
40119	95	56	of	of	IN
40119	95	57	the	the	DT
40119	95	58	ear	ear	NN
40119	95	59	,	,	,
40119	95	60	can	can	MD
40119	95	61	not	not	RB
40119	95	62	any	any	DT
40119	95	63	longer	longer	RB
40119	95	64	be	be	VB
40119	95	65	upheld	uphold	VBN
40119	95	66	.	.	.
40119	96	1	The	the	DT
40119	96	2	essential	essential	JJ
40119	96	3	nature	nature	NN
40119	96	4	of	of	IN
40119	96	5	the	the	DT
40119	96	6	action	action	NN
40119	96	7	exerted	exert	VBN
40119	96	8	by	by	IN
40119	96	9	ether	ether	NN
40119	96	10	waves	wave	NNS
40119	96	11	is	be	VBZ
40119	96	12	still	still	RB
40119	96	13	undetermined	undetermined	JJ
40119	96	14	,	,	,
40119	96	15	though	though	IN
40119	96	16	many	many	JJ
40119	96	17	guesses	guess	NNS
40119	96	18	at	at	IN
40119	96	19	the	the	DT
40119	96	20	truth	truth	NN
40119	96	21	have	have	VBP
40119	96	22	been	be	VBN
40119	96	23	hazarded	hazard	VBN
40119	96	24	.	.	.
40119	97	1	It	-PRON-	PRP
40119	97	2	may	may	MD
40119	97	3	be	be	VB
40119	97	4	electrical	electrical	JJ
40119	97	5	or	or	CC
40119	97	6	it	-PRON-	PRP
40119	97	7	may	may	MD
40119	97	8	be	be	VB
40119	97	9	chemical	chemical	JJ
40119	97	10	;	;	:
40119	97	11	possibly	possibly	RB
40119	97	12	it	-PRON-	PRP
40119	97	13	is	be	VBZ
40119	97	14	both	both	DT
40119	97	15	.	.	.
40119	98	1	Ether	ether	NN
40119	98	2	-	-	HYPH
40119	98	3	waves	wave	NNS
40119	98	4	,	,	,
40119	98	5	we	-PRON-	PRP
40119	98	6	know	know	VBP
40119	98	7	,	,	,
40119	98	8	are	be	VBP
40119	98	9	competent	competent	JJ
40119	98	10	to	to	TO
40119	98	11	bring	bring	VB
40119	98	12	about	about	RP
40119	98	13	chemical	chemical	NN
40119	98	14	changes	change	NNS
40119	98	15	,	,	,
40119	98	16	as	as	IN
40119	98	17	in	in	IN
40119	98	18	the	the	DT
40119	98	19	familiar	familiar	JJ
40119	98	20	instance	instance	NN
40119	98	21	of	of	IN
40119	98	22	the	the	DT
40119	98	23	photographic	photographic	JJ
40119	98	24	processes	process	NNS
40119	98	25	;	;	:
40119	98	26	they	-PRON-	PRP
40119	98	27	can	can	MD
40119	98	28	also	also	RB
40119	98	29	produce	produce	VB
40119	98	30	electric	electric	JJ
40119	98	31	phenomena	phenomenon	NNS
40119	98	32	,	,	,
40119	98	33	as	as	IN
40119	98	34	,	,	,
40119	98	35	for	for	IN
40119	98	36	example	example	NN
40119	98	37	,	,	,
40119	98	38	when	when	WRB
40119	98	39	they	-PRON-	PRP
40119	98	40	fall	fall	VBP
40119	98	41	upon	upon	IN
40119	98	42	a	a	DT
40119	98	43	suitably	suitably	RB
40119	98	44	prepared	prepare	VBN
40119	98	45	piece	piece	NN
40119	98	46	of	of	IN
40119	98	47	selenium	selenium	NN
40119	98	48	;	;	:
40119	98	49	but	but	CC
40119	98	50	there	there	EX
40119	98	51	is	be	VBZ
40119	98	52	no	no	DT
40119	98	53	evidence	evidence	NN
40119	98	54	that	that	IN
40119	98	55	they	-PRON-	PRP
40119	98	56	can	can	MD
40119	98	57	exert	exert	VB
40119	98	58	any	any	DT
40119	98	59	direct	direct	JJ
40119	98	60	mechanical	mechanical	JJ
40119	98	61	action	action	NN
40119	98	62	of	of	IN
40119	98	63	a	a	DT
40119	98	64	vibratory	vibratory	JJ
40119	98	65	character	character	NN
40119	98	66	,	,	,
40119	98	67	and	and	CC
40119	98	68	indeed	indeed	RB
40119	98	69	it	-PRON-	PRP
40119	98	70	is	be	VBZ
40119	98	71	barely	barely	RB
40119	98	72	conceivable	conceivable	JJ
40119	98	73	that	that	IN
40119	98	74	any	any	DT
40119	98	75	portion	portion	NN
40119	98	76	of	of	IN
40119	98	77	our	-PRON-	PRP$
40119	98	78	organism	organism	NN
40119	98	79	should	should	MD
40119	98	80	be	be	VB
40119	98	81	adapted	adapt	VBN
40119	98	82	to	to	TO
40119	98	83	take	take	VB
40119	98	84	up	up	RP
40119	98	85	vibrations	vibration	NNS
40119	98	86	of	of	IN
40119	98	87	such	such	JJ
40119	98	88	enormous	enormous	JJ
40119	98	89	rapidity	rapidity	NN
40119	98	90	as	as	IN
40119	98	91	those	those	DT
40119	98	92	which	which	WDT
40119	98	93	characterise	characterise	VBP
40119	98	94	light	light	NN
40119	98	95	-	-	HYPH
40119	98	96	waves	wave	NNS
40119	98	97	.	.	.
40119	99	1	Of	of	IN
40119	99	2	the	the	DT
40119	99	3	multitude	multitude	NN
40119	99	4	of	of	IN
40119	99	5	ether	ether	NN
40119	99	6	-	-	HYPH
40119	99	7	waves	wave	NNS
40119	99	8	which	which	WDT
40119	99	9	traverse	traverse	VBP
40119	99	10	space	space	NN
40119	99	11	it	-PRON-	PRP
40119	99	12	is	be	VBZ
40119	99	13	only	only	RB
40119	99	14	comparatively	comparatively	RB
40119	99	15	few	few	JJ
40119	99	16	that	that	WDT
40119	99	17	have	have	VBP
40119	99	18	the	the	DT
40119	99	19	power	power	NN
40119	99	20	of	of	IN
40119	99	21	exciting	excite	VBG
40119	99	22	the	the	DT
40119	99	23	sensation	sensation	NN
40119	99	24	of	of	IN
40119	99	25	light	light	NN
40119	99	26	.	.	.
40119	100	1	As	as	IN
40119	100	2	regards	regard	VBZ
40119	100	3	limited	limited	JJ
40119	100	4	range	range	NN
40119	100	5	of	of	IN
40119	100	6	sensibility	sensibility	NN
40119	100	7	there	there	EX
40119	100	8	is	be	VBZ
40119	100	9	a	a	DT
40119	100	10	very	very	RB
40119	100	11	close	close	JJ
40119	100	12	analogy	analogy	NN
40119	100	13	between	between	IN
40119	100	14	hearing	hearing	NN
40119	100	15	and	and	CC
40119	100	16	seeing	seeing	NN
40119	100	17	.	.	.
40119	101	1	No	no	DT
40119	101	2	sensation	sensation	NN
40119	101	3	of	of	IN
40119	101	4	sound	sound	NN
40119	101	5	(	(	-LRB-
40119	101	6	at	at	IN
40119	101	7	least	least	JJS
40119	101	8	of	of	IN
40119	101	9	continuous	continuous	JJ
40119	101	10	sound	sound	NN
40119	101	11	)	)	-RRB-
40119	101	12	is	be	VBZ
40119	101	13	produced	produce	VBN
40119	101	14	when	when	WRB
40119	101	15	air	air	NN
40119	101	16	-	-	HYPH
40119	101	17	waves	wave	NNS
40119	101	18	beat	beat	VBN
40119	101	19	upon	upon	IN
40119	101	20	our	-PRON-	PRP$
40119	101	21	ears	ear	NNS
40119	101	22	unless	unless	IN
40119	101	23	the	the	DT
40119	101	24	rate	rate	NN
40119	101	25	of	of	IN
40119	101	26	the	the	DT
40119	101	27	successive	successive	JJ
40119	101	28	impulses	impulse	NNS
40119	101	29	lies	lie	VBZ
40119	101	30	within	within	IN
40119	101	31	certain	certain	JJ
40119	101	32	definite	definite	JJ
40119	101	33	limits	limit	NNS
40119	101	34	.	.	.
40119	102	1	It	-PRON-	PRP
40119	102	2	is	be	VBZ
40119	102	3	just	just	RB
40119	102	4	so	so	RB
40119	102	5	with	with	IN
40119	102	6	vision	vision	NN
40119	102	7	.	.	.
40119	103	1	If	if	IN
40119	103	2	ether	ether	NN
40119	103	3	-	-	HYPH
40119	103	4	waves	wave	NNS
40119	103	5	fall	fall	VBP
40119	103	6	upon	upon	IN
40119	103	7	our	-PRON-	PRP$
40119	103	8	eyes	eye	NNS
40119	103	9	at	at	IN
40119	103	10	a	a	DT
40119	103	11	less	less	JJR
40119	103	12	rate	rate	NN
40119	103	13	than	than	IN
40119	103	14	about	about	IN
40119	103	15	400	400	CD
40119	103	16	billions	billion	NNS
40119	103	17	per	per	IN
40119	103	18	second	second	NN
40119	103	19	,	,	,
40119	103	20	or	or	CC
40119	103	21	at	at	IN
40119	103	22	a	a	DT
40119	103	23	greater	great	JJR
40119	103	24	rate	rate	NN
40119	103	25	than	than	IN
40119	103	26	750	750	CD
40119	103	27	billions	billion	NNS
40119	103	28	per	per	IN
40119	103	29	second	second	NN
40119	103	30	,	,	,
40119	103	31	no	no	DT
40119	103	32	sensation	sensation	NN
40119	103	33	of	of	IN
40119	103	34	light	light	NN
40119	103	35	is	be	VBZ
40119	103	36	perceived	perceive	VBN
40119	103	37	.	.	.
40119	104	1	There	there	EX
40119	104	2	is	be	VBZ
40119	104	3	another	another	DT
40119	104	4	and	and	CC
40119	104	5	more	more	RBR
40119	104	6	generally	generally	RB
40119	104	7	convenient	convenient	JJ
40119	104	8	way	way	NN
40119	104	9	of	of	IN
40119	104	10	stating	state	VBG
40119	104	11	this	this	DT
40119	104	12	fact	fact	NN
40119	104	13	.	.	.
40119	105	1	Since	since	IN
40119	105	2	all	all	DT
40119	105	3	waves	wave	NNS
40119	105	4	found	find	VBD
40119	105	5	in	in	IN
40119	105	6	the	the	DT
40119	105	7	ether	ether	NN
40119	105	8	travel	travel	NN
40119	105	9	through	through	IN
40119	105	10	space	space	NN
40119	105	11	at	at	IN
40119	105	12	exactly	exactly	RB
40119	105	13	the	the	DT
40119	105	14	same	same	JJ
40119	105	15	speed--186,000	speed--186,000	NNP
40119	105	16	miles	mile	NNS
40119	105	17	a	a	DT
40119	105	18	second	second	JJ
40119	105	19	--	--	:
40119	105	20	it	-PRON-	PRP
40119	105	21	follows	follow	VBZ
40119	105	22	that	that	IN
40119	105	23	the	the	DT
40119	105	24	length[1	length[1	NNP
40119	105	25	]	]	-RRB-
40119	105	26	of	of	IN
40119	105	27	each	each	DT
40119	105	28	of	of	IN
40119	105	29	a	a	DT
40119	105	30	series	series	NN
40119	105	31	of	of	IN
40119	105	32	homogeneous	homogeneous	JJ
40119	105	33	waves	wave	NNS
40119	105	34	must	must	MD
40119	105	35	be	be	VB
40119	105	36	inversely	inversely	RB
40119	105	37	proportional	proportional	JJ
40119	105	38	to	to	IN
40119	105	39	their	-PRON-	PRP$
40119	105	40	frequency	frequency	NN
40119	105	41	,	,	,
40119	105	42	that	that	RB
40119	105	43	is	is	RB
40119	105	44	,	,	,
40119	105	45	to	to	IN
40119	105	46	the	the	DT
40119	105	47	rate	rate	NN
40119	105	48	at	at	IN
40119	105	49	which	which	WDT
40119	105	50	they	-PRON-	PRP
40119	105	51	strike	strike	VBP
40119	105	52	a	a	DT
40119	105	53	fixed	fix	VBN
40119	105	54	object	object	NN
40119	105	55	,	,	,
40119	105	56	such	such	JJ
40119	105	57	as	as	IN
40119	105	58	the	the	DT
40119	105	59	eye	eye	NN
40119	105	60	.	.	.
40119	106	1	Instead	instead	RB
40119	106	2	,	,	,
40119	106	3	therefore	therefore	RB
40119	106	4	,	,	,
40119	106	5	of	of	IN
40119	106	6	specifying	specify	VBG
40119	106	7	waves	wave	NNS
40119	106	8	by	by	IN
40119	106	9	their	-PRON-	PRP$
40119	106	10	frequency	frequency	NN
40119	106	11	we	-PRON-	PRP
40119	106	12	may	may	MD
40119	106	13	equally	equally	RB
40119	106	14	well	well	RB
40119	106	15	specify	specify	VB
40119	106	16	them	-PRON-	PRP
40119	106	17	by	by	IN
40119	106	18	their	-PRON-	PRP$
40119	106	19	length	length	NN
40119	106	20	.	.	.
40119	107	1	Waves	wave	NNS
40119	107	2	whose	whose	WP$
40119	107	3	frequency	frequency	NN
40119	107	4	is	be	VBZ
40119	107	5	400	400	CD
40119	107	6	billions	billion	NNS
40119	107	7	per	per	IN
40119	107	8	second	second	JJ
40119	107	9	have	have	VBP
40119	107	10	a	a	DT
40119	107	11	length	length	NN
40119	107	12	of	of	IN
40119	107	13	about	about	RB
40119	107	14	1/34000	1/34000	CD
40119	107	15	inch	inch	NN
40119	107	16	,	,	,
40119	107	17	this	this	DT
40119	107	18	being	be	VBG
40119	107	19	the	the	DT
40119	107	20	one	one	CD
40119	107	21	four	four	CD
40119	107	22	hundred	hundred	CD
40119	107	23	billionth	billionth	JJ
40119	107	24	part	part	NN
40119	107	25	of	of	IN
40119	107	26	186,000	186,000	CD
40119	107	27	miles	mile	NNS
40119	107	28	;	;	:
40119	107	29	and	and	CC
40119	107	30	those	those	DT
40119	107	31	whose	whose	WP$
40119	107	32	frequency	frequency	NN
40119	107	33	is	be	VBZ
40119	107	34	750	750	CD
40119	107	35	billions	billion	NNS
40119	107	36	have	have	VBP
40119	107	37	a	a	DT
40119	107	38	wave	wave	NN
40119	107	39	-	-	HYPH
40119	107	40	length	length	NN
40119	107	41	of	of	IN
40119	107	42	1/64000	1/64000	CD
40119	107	43	inch	inch	NN
40119	107	44	.	.	.
40119	108	1	Waves	wave	NNS
40119	108	2	,	,	,
40119	108	3	then	then	RB
40119	108	4	,	,	,
40119	108	5	of	of	IN
40119	108	6	a	a	DT
40119	108	7	length	length	NN
40119	108	8	greater	great	JJR
40119	108	9	than	than	IN
40119	108	10	1/34000	1/34000	CD
40119	108	11	inch	inch	NN
40119	108	12	or	or	CC
40119	108	13	less	less	JJR
40119	108	14	than	than	IN
40119	108	15	1/64000	1/64000	CD
40119	108	16	inch	inch	NN
40119	108	17	have	have	VBP
40119	108	18	no	no	DT
40119	108	19	effect	effect	NN
40119	108	20	upon	upon	IN
40119	108	21	our	-PRON-	PRP$
40119	108	22	organs	organ	NNS
40119	108	23	of	of	IN
40119	108	24	vision	vision	NN
40119	108	25	.	.	.
40119	109	1	[	[	-LRB-
40119	109	2	2	2	LS
40119	109	3	]	]	-RRB-
40119	109	4	In	in	IN
40119	109	5	relation	relation	NN
40119	109	6	to	to	IN
40119	109	7	this	this	DT
40119	109	8	important	important	JJ
40119	109	9	fact	fact	NN
40119	109	10	it	-PRON-	PRP
40119	109	11	will	will	MD
40119	109	12	be	be	VB
40119	109	13	convenient	convenient	JJ
40119	109	14	to	to	TO
40119	109	15	refer	refer	VB
40119	109	16	to	to	IN
40119	109	17	a	a	DT
40119	109	18	familiar	familiar	JJ
40119	109	19	but	but	CC
40119	109	20	very	very	RB
40119	109	21	beautiful	beautiful	JJ
40119	109	22	experiment	experiment	NN
40119	109	23	--	--	:
40119	109	24	the	the	DT
40119	109	25	formation	formation	NN
40119	109	26	of	of	IN
40119	109	27	a	a	DT
40119	109	28	spectrum	spectrum	NN
40119	109	29	.	.	.
40119	110	1	An	an	DT
40119	110	2	electric	electric	JJ
40119	110	3	lamp	lamp	NN
40119	110	4	is	be	VBZ
40119	110	5	enclosed	enclose	VBN
40119	110	6	in	in	IN
40119	110	7	an	an	DT
40119	110	8	iron	iron	NN
40119	110	9	lantern	lantern	NN
40119	110	10	,	,	,
40119	110	11	having	have	VBG
40119	110	12	in	in	IN
40119	110	13	its	-PRON-	PRP$
40119	110	14	front	front	NN
40119	110	15	an	an	DT
40119	110	16	upright	upright	JJ
40119	110	17	slit	slit	NN
40119	110	18	;	;	:
40119	110	19	from	from	IN
40119	110	20	this	this	DT
40119	110	21	slit	slit	NN
40119	110	22	there	there	EX
40119	110	23	issues	issue	VBZ
40119	110	24	a	a	DT
40119	110	25	narrow	narrow	JJ
40119	110	26	beam	beam	NN
40119	110	27	of	of	IN
40119	110	28	white	white	JJ
40119	110	29	light	light	NN
40119	110	30	,	,	,
40119	110	31	which	which	WDT
40119	110	32	is	be	VBZ
40119	110	33	made	make	VBN
40119	110	34	up	up	RP
40119	110	35	of	of	IN
40119	110	36	rays	ray	NNS
40119	110	37	of	of	IN
40119	110	38	many	many	JJ
40119	110	39	different	different	JJ
40119	110	40	wave	wave	NN
40119	110	41	-	-	HYPH
40119	110	42	lengths	length	NNS
40119	110	43	,	,	,
40119	110	44	all	all	DT
40119	110	45	mixed	mix	VBN
40119	110	46	up	up	RP
40119	110	47	together	together	RB
40119	110	48	.	.	.
40119	111	1	By	by	IN
40119	111	2	causing	cause	VBG
40119	111	3	the	the	DT
40119	111	4	light	light	NN
40119	111	5	to	to	TO
40119	111	6	pass	pass	VB
40119	111	7	through	through	RP
40119	111	8	a	a	DT
40119	111	9	prism	prism	NN
40119	111	10	the	the	DT
40119	111	11	mixed	mix	VBN
40119	111	12	rays	ray	NNS
40119	111	13	are	be	VBP
40119	111	14	sorted	sort	VBN
40119	111	15	out	out	RP
40119	111	16	side	side	NN
40119	111	17	by	by	IN
40119	111	18	side	side	NN
40119	111	19	according	accord	VBG
40119	111	20	to	to	IN
40119	111	21	their	-PRON-	PRP$
40119	111	22	several	several	JJ
40119	111	23	wave	wave	NN
40119	111	24	-	-	HYPH
40119	111	25	lengths	length	NNS
40119	111	26	,	,	,
40119	111	27	forming	form	VBG
40119	111	28	a	a	DT
40119	111	29	broad	broad	JJ
40119	111	30	,	,	,
40119	111	31	many	many	JJ
40119	111	32	-	-	HYPH
40119	111	33	hued	hued	JJ
40119	111	34	band	band	NN
40119	111	35	or	or	CC
40119	111	36	"	"	``
40119	111	37	spectrum	spectrum	NN
40119	111	38	"	"	''
40119	111	39	upon	upon	IN
40119	111	40	a	a	DT
40119	111	41	white	white	JJ
40119	111	42	screen	screen	NN
40119	111	43	placed	place	VBN
40119	111	44	to	to	TO
40119	111	45	receive	receive	VB
40119	111	46	it	-PRON-	PRP
40119	111	47	.	.	.
40119	112	1	(	(	-LRB-
40119	112	2	See	see	VB
40119	112	3	Fig	fig	NN
40119	112	4	.	.	.
40119	113	1	1	1	LS
40119	113	2	.	.	.
40119	113	3	)	)	-RRB-
40119	114	1	To	to	IN
40119	114	2	the	the	DT
40119	114	3	visible	visible	JJ
40119	114	4	rays	ray	NNS
40119	114	5	of	of	IN
40119	114	6	the	the	DT
40119	114	7	longest	long	JJS
40119	114	8	wave	wave	NN
40119	114	9	-	-	HYPH
40119	114	10	length	length	NN
40119	114	11	is	be	VBZ
40119	114	12	due	due	JJ
40119	114	13	the	the	DT
40119	114	14	red	red	JJ
40119	114	15	colour	colour	NN
40119	114	16	on	on	IN
40119	114	17	the	the	DT
40119	114	18	extreme	extreme	JJ
40119	114	19	left	left	NN
40119	114	20	.	.	.
40119	115	1	Waves	wave	NNS
40119	115	2	of	of	IN
40119	115	3	somewhat	somewhat	RB
40119	115	4	shorter	short	JJR
40119	115	5	length	length	NN
40119	115	6	produce	produce	VBP
40119	115	7	the	the	DT
40119	115	8	adjoining	adjoining	JJ
40119	115	9	stripe	stripe	NN
40119	115	10	of	of	IN
40119	115	11	orange	orange	NN
40119	115	12	,	,	,
40119	115	13	and	and	CC
40119	115	14	the	the	DT
40119	115	15	succeeding	succeed	VBG
40119	115	16	colours	colour	NNS
40119	115	17	--	--	:
40119	115	18	yellow	yellow	JJ
40119	115	19	,	,	,
40119	115	20	green	green	JJ
40119	115	21	,	,	,
40119	115	22	and	and	CC
40119	115	23	blue	blue	JJ
40119	115	24	--	--	:
40119	115	25	correspond	correspond	VB
40119	115	26	respectively	respectively	RB
40119	115	27	to	to	IN
40119	115	28	waves	wave	NNS
40119	115	29	of	of	IN
40119	115	30	shorter	short	JJR
40119	115	31	and	and	CC
40119	115	32	shorter	short	JJR
40119	115	33	lengths	length	NNS
40119	115	34	.	.	.
40119	116	1	Lastly	lastly	RB
40119	116	2	there	there	EX
40119	116	3	comes	come	VBZ
40119	116	4	a	a	DT
40119	116	5	patch	patch	NN
40119	116	6	of	of	IN
40119	116	7	violet	violet	NN
40119	116	8	due	due	IN
40119	116	9	to	to	IN
40119	116	10	those	those	DT
40119	116	11	of	of	IN
40119	116	12	the	the	DT
40119	116	13	visible	visible	JJ
40119	116	14	rays	ray	NNS
40119	116	15	whose	whose	WP$
40119	116	16	wave	wave	NN
40119	116	17	-	-	HYPH
40119	116	18	length	length	NN
40119	116	19	is	be	VBZ
40119	116	20	the	the	DT
40119	116	21	shortest	short	JJS
40119	116	22	of	of	IN
40119	116	23	all	all	DT
40119	116	24	.	.	.
40119	117	1	The	the	DT
40119	117	2	wave	wave	NN
40119	117	3	-	-	HYPH
40119	117	4	length	length	NN
40119	117	5	of	of	IN
40119	117	6	the	the	DT
40119	117	7	light	light	NN
40119	117	8	at	at	IN
40119	117	9	the	the	DT
40119	117	10	extreme	extreme	JJ
40119	117	11	edge	edge	NN
40119	117	12	of	of	IN
40119	117	13	the	the	DT
40119	117	14	red	red	NN
40119	117	15	is	be	VBZ
40119	117	16	about	about	RB
40119	117	17	1/34000	1/34000	CD
40119	117	18	inch	inch	NN
40119	117	19	,	,	,
40119	117	20	and	and	CC
40119	117	21	as	as	IN
40119	117	22	we	-PRON-	PRP
40119	117	23	pass	pass	VBP
40119	117	24	along	along	RP
40119	117	25	the	the	DT
40119	117	26	spectrum	spectrum	NN
40119	117	27	the	the	DT
40119	117	28	wave	wave	NN
40119	117	29	-	-	HYPH
40119	117	30	length	length	NN
40119	117	31	gradually	gradually	RB
40119	117	32	diminishes	diminish	VBZ
40119	117	33	,	,	,
40119	117	34	until	until	IN
40119	117	35	at	at	IN
40119	117	36	the	the	DT
40119	117	37	extreme	extreme	JJ
40119	117	38	outer	outer	JJ
40119	117	39	edge	edge	NN
40119	117	40	of	of	IN
40119	117	41	the	the	DT
40119	117	42	violet	violet	NN
40119	117	43	it	-PRON-	PRP
40119	117	44	is	be	VBZ
40119	117	45	about	about	RB
40119	117	46	1/64000	1/64000	CD
40119	117	47	inch	inch	NN
40119	117	48	,	,	,
40119	117	49	or	or	CC
40119	117	50	not	not	RB
40119	117	51	much	much	RB
40119	117	52	more	more	JJR
40119	117	53	than	than	IN
40119	117	54	half	half	PDT
40119	117	55	that	that	DT
40119	117	56	at	at	IN
40119	117	57	the	the	DT
40119	117	58	other	other	JJ
40119	117	59	end	end	NN
40119	117	60	.	.	.
40119	118	1	[	[	-LRB-
40119	118	2	Illustration	illustration	NN
40119	118	3	:	:	:
40119	118	4	_	_	NNP
40119	118	5	Fig	Fig	NNP
40119	118	6	.	.	.
40119	119	1	1.--Image	1.--image	CD
40119	119	2	of	of	IN
40119	119	3	Slit	Slit	NNP
40119	119	4	and	and	CC
40119	119	5	of	of	IN
40119	119	6	Spectrum	Spectrum	NNP
40119	119	7	.	.	.
40119	119	8	_	_	NNP
40119	119	9	]	]	-RRB-
40119	119	10	The	the	DT
40119	119	11	two	two	CD
40119	119	12	ends	end	NNS
40119	119	13	of	of	IN
40119	119	14	the	the	DT
40119	119	15	spectrum	spectrum	NN
40119	119	16	gradually	gradually	RB
40119	119	17	fade	fade	VBD
40119	119	18	away	away	RB
40119	119	19	into	into	IN
40119	119	20	darkness	darkness	NN
40119	119	21	,	,	,
40119	119	22	and	and	CC
40119	119	23	the	the	DT
40119	119	24	point	point	NN
40119	119	25	that	that	WDT
40119	119	26	I	-PRON-	PRP
40119	119	27	wish	wish	VBP
40119	119	28	to	to	TO
40119	119	29	insist	insist	VB
40119	119	30	upon	upon	IN
40119	119	31	and	and	CC
40119	119	32	make	make	VB
40119	119	33	perfectly	perfectly	RB
40119	119	34	clear	clear	JJ
40119	119	35	is	be	VBZ
40119	119	36	this:--The	this:--the	IN
40119	119	37	position	position	NN
40119	119	38	of	of	IN
40119	119	39	the	the	DT
40119	119	40	boundaries	boundary	NNS
40119	119	41	terminating	terminate	VBG
40119	119	42	the	the	DT
40119	119	43	visible	visible	JJ
40119	119	44	spectrum	spectrum	NN
40119	119	45	does	do	VBZ
40119	119	46	not	not	RB
40119	119	47	depend	depend	VB
40119	119	48	upon	upon	IN
40119	119	49	anything	anything	NN
40119	119	50	whatever	whatever	WDT
40119	119	51	in	in	IN
40119	119	52	the	the	DT
40119	119	53	nature	nature	NN
40119	119	54	of	of	IN
40119	119	55	light	light	NN
40119	119	56	regarded	regard	VBN
40119	119	57	as	as	IN
40119	119	58	a	a	DT
40119	119	59	physical	physical	JJ
40119	119	60	phenomenon	phenomenon	NN
40119	119	61	.	.	.
40119	120	1	Ether	ether	JJ
40119	120	2	waves	wave	NNS
40119	120	3	which	which	WDT
40119	120	4	are	be	VBP
40119	120	5	much	much	RB
40119	120	6	longer	long	JJR
40119	120	7	and	and	CC
40119	120	8	much	much	RB
40119	120	9	shorter	short	JJR
40119	120	10	than	than	IN
40119	120	11	those	those	DT
40119	120	12	which	which	WDT
40119	120	13	illuminate	illuminate	VBP
40119	120	14	the	the	DT
40119	120	15	spectrum	spectrum	NN
40119	120	16	certainly	certainly	RB
40119	120	17	exist	exist	VBP
40119	120	18	,	,	,
40119	120	19	and	and	CC
40119	120	20	evidence	evidence	NN
40119	120	21	of	of	IN
40119	120	22	their	-PRON-	PRP$
40119	120	23	existence	existence	NN
40119	120	24	is	be	VBZ
40119	120	25	easily	easily	RB
40119	120	26	obtainable	obtainable	JJ
40119	120	27	.	.	.
40119	121	1	But	but	CC
40119	121	2	we	-PRON-	PRP
40119	121	3	can	can	MD
40119	121	4	not	not	RB
40119	121	5	see	see	VB
40119	121	6	them	-PRON-	PRP
40119	121	7	;	;	:
40119	121	8	they	-PRON-	PRP
40119	121	9	fall	fall	VBP
40119	121	10	upon	upon	IN
40119	121	11	our	-PRON-	PRP$
40119	121	12	eyes	eye	NNS
40119	121	13	without	without	IN
40119	121	14	exciting	excite	VBG
40119	121	15	the	the	DT
40119	121	16	faintest	faint	JJS
40119	121	17	sensation	sensation	NN
40119	121	18	of	of	IN
40119	121	19	light	light	NN
40119	121	20	.	.	.
40119	122	1	The	the	DT
40119	122	2	visible	visible	JJ
40119	122	3	spectrum	spectrum	NN
40119	122	4	is	be	VBZ
40119	122	5	limited	limit	VBN
40119	122	6	solely	solely	RB
40119	122	7	by	by	IN
40119	122	8	the	the	DT
40119	122	9	physiological	physiological	JJ
40119	122	10	constitution	constitution	NN
40119	122	11	of	of	IN
40119	122	12	our	-PRON-	PRP$
40119	122	13	organs	organ	NNS
40119	122	14	of	of	IN
40119	122	15	vision	vision	NN
40119	122	16	,	,	,
40119	122	17	and	and	CC
40119	122	18	the	the	DT
40119	122	19	fact	fact	NN
40119	122	20	that	that	IN
40119	122	21	it	-PRON-	PRP
40119	122	22	begins	begin	VBZ
40119	122	23	and	and	CC
40119	122	24	ends	end	VBZ
40119	122	25	where	where	WRB
40119	122	26	it	-PRON-	PRP
40119	122	27	does	do	VBZ
40119	122	28	is	be	VBZ
40119	122	29	,	,	,
40119	122	30	from	from	IN
40119	122	31	a	a	DT
40119	122	32	physical	physical	JJ
40119	122	33	point	point	NN
40119	122	34	of	of	IN
40119	122	35	view	view	NN
40119	122	36	,	,	,
40119	122	37	a	a	DT
40119	122	38	mere	mere	JJ
40119	122	39	accident	accident	NN
40119	122	40	.	.	.
40119	123	1	The	the	DT
40119	123	2	spectrum	spectrum	NN
40119	123	3	actually	actually	RB
40119	123	4	projected	project	VBD
40119	123	5	upon	upon	IN
40119	123	6	the	the	DT
40119	123	7	screen	screen	NN
40119	123	8	is	be	VBZ
40119	123	9	in	in	IN
40119	123	10	truth	truth	NN
40119	123	11	much	much	RB
40119	123	12	longer	long	RBR
40119	123	13	than	than	IN
40119	123	14	that	that	DT
40119	123	15	portion	portion	NN
40119	123	16	of	of	IN
40119	123	17	it	-PRON-	PRP
40119	123	18	which	which	WDT
40119	123	19	any	any	DT
40119	123	20	one	one	NN
40119	123	21	can	can	MD
40119	123	22	see	see	VB
40119	123	23	:	:	:
40119	123	24	it	-PRON-	PRP
40119	123	25	extends	extend	VBZ
40119	123	26	for	for	IN
40119	123	27	a	a	DT
40119	123	28	considerable	considerable	JJ
40119	123	29	distance	distance	NN
40119	123	30	beyond	beyond	IN
40119	123	31	the	the	DT
40119	123	32	violet	violet	NN
40119	123	33	at	at	IN
40119	123	34	the	the	DT
40119	123	35	one	one	CD
40119	123	36	end	end	NN
40119	123	37	and	and	CC
40119	123	38	beyond	beyond	IN
40119	123	39	the	the	DT
40119	123	40	red	red	NN
40119	123	41	at	at	IN
40119	123	42	the	the	DT
40119	123	43	other	other	JJ
40119	123	44	,	,	,
40119	123	45	these	these	DT
40119	123	46	invisible	invisible	JJ
40119	123	47	portions	portion	NNS
40119	123	48	being	be	VBG
40119	123	49	known	know	VBN
40119	123	50	as	as	IN
40119	123	51	the	the	DT
40119	123	52	ultra	ultra	JJ
40119	123	53	-	-	JJ
40119	123	54	violet	violet	NN
40119	123	55	and	and	CC
40119	123	56	infra	infra	NN
40119	123	57	-	-	HYPH
40119	123	58	red	red	JJ
40119	123	59	regions	region	NNS
40119	123	60	.	.	.
40119	124	1	People	People	NNS
40119	124	2	's	's	POS
40119	124	3	eyes	eye	NNS
40119	124	4	differ	differ	VBP
40119	124	5	in	in	IN
40119	124	6	regard	regard	NN
40119	124	7	to	to	IN
40119	124	8	range	range	NN
40119	124	9	of	of	IN
40119	124	10	sensibility	sensibility	NN
40119	124	11	just	just	RB
40119	124	12	as	as	IN
40119	124	13	their	-PRON-	PRP$
40119	124	14	ears	ear	NNS
40119	124	15	do	do	VBP
40119	124	16	.	.	.
40119	125	1	I	-PRON-	PRP
40119	125	2	believe	believe	VBP
40119	125	3	the	the	DT
40119	125	4	sensibility	sensibility	NN
40119	125	5	of	of	IN
40119	125	6	my	-PRON-	PRP$
40119	125	7	own	own	JJ
40119	125	8	eyes	eye	NNS
40119	125	9	to	to	TO
40119	125	10	be	be	VB
40119	125	11	normal	normal	JJ
40119	125	12	,	,	,
40119	125	13	but	but	CC
40119	125	14	if	if	IN
40119	125	15	I	-PRON-	PRP
40119	125	16	were	be	VBD
40119	125	17	to	to	TO
40119	125	18	indicate	indicate	VB
40119	125	19	the	the	DT
40119	125	20	two	two	CD
40119	125	21	points	point	NNS
40119	125	22	where	where	WRB
40119	125	23	the	the	DT
40119	125	24	spectrum	spectrum	NN
40119	125	25	appears	appear	VBZ
40119	125	26	to	to	IN
40119	125	27	me	-PRON-	PRP
40119	125	28	to	to	TO
40119	125	29	begin	begin	VB
40119	125	30	and	and	CC
40119	125	31	to	to	TO
40119	125	32	end	end	VB
40119	125	33	,	,	,
40119	125	34	a	a	DT
40119	125	35	great	great	JJ
40119	125	36	many	many	JJ
40119	125	37	persons	person	NNS
40119	125	38	would	would	MD
40119	125	39	certainly	certainly	RB
40119	125	40	be	be	VB
40119	125	41	inclined	incline	VBN
40119	125	42	to	to	TO
40119	125	43	disagree	disagree	VB
40119	125	44	with	with	IN
40119	125	45	me	-PRON-	PRP
40119	125	46	and	and	CC
40119	125	47	place	place	VB
40119	125	48	the	the	DT
40119	125	49	boundaries	boundary	NNS
40119	125	50	somewhere	somewhere	RB
40119	125	51	else	else	RB
40119	125	52	.	.	.
40119	126	1	Some	some	DT
40119	126	2	,	,	,
40119	126	3	indeed	indeed	RB
40119	126	4	,	,	,
40119	126	5	could	could	MD
40119	126	6	see	see	VB
40119	126	7	nothing	nothing	NN
40119	126	8	whatever	whatever	WDT
40119	126	9	in	in	IN
40119	126	10	what	what	WP
40119	126	11	appears	appear	VBZ
40119	126	12	to	to	IN
40119	126	13	most	most	JJS
40119	126	14	of	of	IN
40119	126	15	us	-PRON-	PRP
40119	126	16	to	to	TO
40119	126	17	be	be	VB
40119	126	18	a	a	DT
40119	126	19	brilliant	brilliant	JJ
40119	126	20	portion	portion	NN
40119	126	21	of	of	IN
40119	126	22	the	the	DT
40119	126	23	red	red	NN
40119	126	24	.	.	.
40119	127	1	Again	again	RB
40119	127	2	,	,	,
40119	127	3	it	-PRON-	PRP
40119	127	4	is	be	VBZ
40119	127	5	by	by	IN
40119	127	6	no	no	DT
40119	127	7	means	means	NN
40119	127	8	probable	probable	JJ
40119	127	9	that	that	IN
40119	127	10	in	in	IN
40119	127	11	all	all	DT
40119	127	12	animals	animal	NNS
40119	127	13	and	and	CC
40119	127	14	insects	insect	NNS
40119	127	15	the	the	DT
40119	127	16	limits	limit	NNS
40119	127	17	of	of	IN
40119	127	18	vision	vision	NN
40119	127	19	are	be	VBP
40119	127	20	the	the	DT
40119	127	21	same	same	JJ
40119	127	22	as	as	IN
40119	127	23	they	-PRON-	PRP
40119	127	24	are	be	VBP
40119	127	25	in	in	IN
40119	127	26	man	man	NN
40119	127	27	.	.	.
40119	128	1	We	-PRON-	PRP
40119	128	2	might	may	MD
40119	128	3	naturally	naturally	RB
40119	128	4	expect	expect	VB
40119	128	5	that	that	DT
40119	128	6	larger	large	JJR
40119	128	7	and	and	CC
40119	128	8	perhaps	perhaps	RB
40119	128	9	more	more	RBR
40119	128	10	coarsely	coarsely	RB
40119	128	11	constructed	construct	VBN
40119	128	12	eyes	eye	NNS
40119	128	13	than	than	IN
40119	128	14	our	-PRON-	PRP$
40119	128	15	own	own	JJ
40119	128	16	would	would	MD
40119	128	17	respond	respond	VB
40119	128	18	to	to	IN
40119	128	19	waves	wave	NNS
40119	128	20	of	of	IN
40119	128	21	greater	great	JJR
40119	128	22	average	average	JJ
40119	128	23	length	length	NN
40119	128	24	,	,	,
40119	128	25	while	while	IN
40119	128	26	the	the	DT
40119	128	27	visual	visual	JJ
40119	128	28	organs	organ	NNS
40119	128	29	of	of	IN
40119	128	30	small	small	JJ
40119	128	31	insects	insect	NNS
40119	128	32	might	may	MD
40119	128	33	on	on	IN
40119	128	34	the	the	DT
40119	128	35	other	other	JJ
40119	128	36	hand	hand	NN
40119	128	37	be	be	VB
40119	128	38	more	more	RBR
40119	128	39	sensitive	sensitive	JJ
40119	128	40	to	to	IN
40119	128	41	shorter	short	JJR
40119	128	42	waves	wave	NNS
40119	128	43	.	.	.
40119	129	1	The	the	DT
40119	129	2	point	point	NN
40119	129	3	is	be	VBZ
40119	129	4	not	not	RB
40119	129	5	one	one	CD
40119	129	6	that	that	WDT
40119	129	7	can	can	MD
40119	129	8	be	be	VB
40119	129	9	easily	easily	RB
40119	129	10	settled	settle	VBN
40119	129	11	,	,	,
40119	129	12	because	because	IN
40119	129	13	we	-PRON-	PRP
40119	129	14	are	be	VBP
40119	129	15	unable	unable	JJ
40119	129	16	to	to	TO
40119	129	17	cross	cross	VB
40119	129	18	-	-	VB
40119	129	19	examine	examine	VB
40119	129	20	an	an	DT
40119	129	21	animal	animal	NN
40119	129	22	as	as	IN
40119	129	23	to	to	IN
40119	129	24	what	what	WP
40119	129	25	it	-PRON-	PRP
40119	129	26	sees	see	VBZ
40119	129	27	under	under	IN
40119	129	28	different	different	JJ
40119	129	29	conditions	condition	NNS
40119	129	30	.	.	.
40119	130	1	But	but	CC
40119	130	2	Sir	Sir	NNP
40119	130	3	John	John	NNP
40119	130	4	Lubbock	Lubbock	NNP
40119	130	5	,	,	,
40119	130	6	taking	take	VBG
40119	130	7	advantage	advantage	NN
40119	130	8	of	of	IN
40119	130	9	the	the	DT
40119	130	10	dislike	dislike	NN
40119	130	11	which	which	WDT
40119	130	12	ants	ant	VBZ
40119	130	13	when	when	WRB
40119	130	14	in	in	IN
40119	130	15	their	-PRON-	PRP$
40119	130	16	nests	nest	NNS
40119	130	17	have	have	VBP
40119	130	18	for	for	IN
40119	130	19	light	light	NN
40119	130	20	,	,	,
40119	130	21	has	have	VBZ
40119	130	22	proved	prove	VBN
40119	130	23	by	by	IN
40119	130	24	a	a	DT
40119	130	25	series	series	NN
40119	130	26	of	of	IN
40119	130	27	very	very	RB
40119	130	28	exhaustive	exhaustive	JJ
40119	130	29	and	and	CC
40119	130	30	conclusive	conclusive	JJ
40119	130	31	experiments	experiment	NNS
40119	130	32	that	that	WDT
40119	130	33	these	these	DT
40119	130	34	insects	insect	NNS
40119	130	35	are	be	VBP
40119	130	36	most	most	RBS
40119	130	37	sensitive	sensitive	JJ
40119	130	38	to	to	IN
40119	130	39	rays	ray	NNS
40119	130	40	which	which	WDT
40119	130	41	our	-PRON-	PRP$
40119	130	42	own	own	JJ
40119	130	43	eyes	eye	NNS
40119	130	44	can	can	MD
40119	130	45	not	not	RB
40119	130	46	perceive	perceive	VB
40119	130	47	at	at	RB
40119	130	48	all	all	RB
40119	130	49	.	.	.
40119	131	1	That	that	DT
40119	131	2	region	region	NN
40119	131	3	of	of	IN
40119	131	4	the	the	DT
40119	131	5	spectrum	spectrum	NN
40119	131	6	which	which	WDT
40119	131	7	appears	appear	VBZ
40119	131	8	brightest	bright	JJS
40119	131	9	to	to	IN
40119	131	10	the	the	DT
40119	131	11	eye	eye	NN
40119	131	12	of	of	IN
40119	131	13	an	an	DT
40119	131	14	ant	ant	NN
40119	131	15	is	be	VBZ
40119	131	16	what	what	WP
40119	131	17	we	-PRON-	PRP
40119	131	18	should	should	MD
40119	131	19	call	call	VB
40119	131	20	a	a	DT
40119	131	21	perfectly	perfectly	RB
40119	131	22	dark	dark	JJ
40119	131	23	one	one	NN
40119	131	24	,	,	,
40119	131	25	lying	lie	VBG
40119	131	26	outside	outside	IN
40119	131	27	the	the	DT
40119	131	28	violet	violet	NN
40119	131	29	,	,	,
40119	131	30	where	where	WRB
40119	131	31	the	the	DT
40119	131	32	incident	incident	NN
40119	131	33	waves	wave	NNS
40119	131	34	have	have	VBP
40119	131	35	a	a	DT
40119	131	36	length	length	NN
40119	131	37	of	of	IN
40119	131	38	less	less	JJR
40119	131	39	than	than	IN
40119	131	40	1/64000	1/64000	CD
40119	131	41	inch	inch	NN
40119	131	42	.	.	.
40119	132	1	As	as	IN
40119	132	2	Lord	Lord	NNP
40119	132	3	Salisbury	Salisbury	NNP
40119	132	4	said	say	VBD
40119	132	5	at	at	IN
40119	132	6	Oxford	Oxford	NNP
40119	132	7	,	,	,
40119	132	8	the	the	DT
40119	132	9	function	function	NN
40119	132	10	of	of	IN
40119	132	11	the	the	DT
40119	132	12	ether	ether	NN
40119	132	13	is	be	VBZ
40119	132	14	to	to	TO
40119	132	15	undulate	undulate	VB
40119	132	16	,	,	,
40119	132	17	and	and	CC
40119	132	18	,	,	,
40119	132	19	in	in	IN
40119	132	20	fact	fact	NN
40119	132	21	,	,	,
40119	132	22	it	-PRON-	PRP
40119	132	23	transports	transport	VBZ
40119	132	24	energy	energy	NN
40119	132	25	from	from	IN
40119	132	26	one	one	CD
40119	132	27	place	place	NN
40119	132	28	to	to	IN
40119	132	29	another	another	DT
40119	132	30	by	by	IN
40119	132	31	wave	wave	NN
40119	132	32	-	-	HYPH
40119	132	33	motion	motion	NN
40119	132	34	.	.	.
40119	133	1	Some	some	DT
40119	133	2	of	of	IN
40119	133	3	its	-PRON-	PRP$
40119	133	4	waves	wave	NNS
40119	133	5	,	,	,
40119	133	6	such	such	JJ
40119	133	7	as	as	IN
40119	133	8	those	those	DT
40119	133	9	which	which	WDT
40119	133	10	proceed	proceed	VBP
40119	133	11	from	from	IN
40119	133	12	an	an	DT
40119	133	13	electric	electric	JJ
40119	133	14	-	-	HYPH
40119	133	15	light	light	NN
40119	133	16	dynamo	dynamo	NN
40119	133	17	,	,	,
40119	133	18	may	may	MD
40119	133	19	be	be	VB
40119	133	20	thousands	thousand	NNS
40119	133	21	of	of	IN
40119	133	22	miles	mile	NNS
40119	133	23	in	in	IN
40119	133	24	length	length	NN
40119	133	25	,	,	,
40119	133	26	others	other	NNS
40119	133	27	may	may	MD
40119	133	28	be	be	VB
40119	133	29	shorter	short	JJR
40119	133	30	than	than	IN
40119	133	31	a	a	DT
40119	133	32	millionth	millionth	NN
40119	133	33	of	of	IN
40119	133	34	an	an	DT
40119	133	35	inch	inch	NN
40119	133	36	,	,	,
40119	133	37	as	as	IN
40119	133	38	is	be	VBZ
40119	133	39	perhaps	perhaps	RB
40119	133	40	the	the	DT
40119	133	41	case	case	NN
40119	133	42	with	with	IN
40119	133	43	those	those	DT
40119	133	44	associated	associate	VBN
40119	133	45	with	with	IN
40119	133	46	Professor	Professor	NNP
40119	133	47	Röntgen	Röntgen	NNP
40119	133	48	's	's	POS
40119	133	49	X	X	NNS
40119	133	50	-	-	NNS
40119	133	51	rays	ray	NNS
40119	133	52	;	;	:
40119	133	53	but	but	CC
40119	133	54	all	all	DT
40119	133	55	,	,	,
40119	133	56	so	so	RB
40119	133	57	far	far	RB
40119	133	58	as	as	IN
40119	133	59	is	be	VBZ
40119	133	60	known	know	VBN
40119	133	61	,	,	,
40119	133	62	are	be	VBP
40119	133	63	of	of	IN
40119	133	64	essentially	essentially	RB
40119	133	65	the	the	DT
40119	133	66	same	same	JJ
40119	133	67	character	character	NN
40119	133	68	,	,	,
40119	133	69	differing	differ	VBG
40119	133	70	from	from	IN
40119	133	71	one	one	CD
40119	133	72	another	another	DT
40119	133	73	only	only	RB
40119	133	74	as	as	IN
40119	133	75	the	the	DT
40119	133	76	billows	billow	NNS
40119	133	77	of	of	IN
40119	133	78	the	the	DT
40119	133	79	Atlantic	Atlantic	NNP
40119	133	80	differ	differ	VBP
40119	133	81	from	from	IN
40119	133	82	the	the	DT
40119	133	83	ripples	ripple	NNS
40119	133	84	on	on	IN
40119	133	85	the	the	DT
40119	133	86	surface	surface	NN
40119	133	87	of	of	IN
40119	133	88	a	a	DT
40119	133	89	pond	pond	NN
40119	133	90	.	.	.
40119	134	1	No	no	RB
40119	134	2	matter	matter	RB
40119	134	3	how	how	WRB
40119	134	4	the	the	DT
40119	134	5	disturbance	disturbance	NN
40119	134	6	is	be	VBZ
40119	134	7	first	first	RB
40119	134	8	set	set	VBN
40119	134	9	up	up	RP
40119	134	10	,	,	,
40119	134	11	whether	whether	IN
40119	134	12	by	by	IN
40119	134	13	the	the	DT
40119	134	14	sun	sun	NN
40119	134	15	,	,	,
40119	134	16	or	or	CC
40119	134	17	by	by	IN
40119	134	18	a	a	DT
40119	134	19	dynamo	dynamo	NN
40119	134	20	,	,	,
40119	134	21	or	or	CC
40119	134	22	by	by	IN
40119	134	23	a	a	DT
40119	134	24	warm	warm	JJ
40119	134	25	flat	flat	JJ
40119	134	26	-	-	HYPH
40119	134	27	iron	iron	NN
40119	134	28	,	,	,
40119	134	29	in	in	IN
40119	134	30	every	every	DT
40119	134	31	case	case	NN
40119	134	32	the	the	DT
40119	134	33	ether	ether	NN
40119	134	34	conveys	convey	VBZ
40119	134	35	nothing	nothing	NN
40119	134	36	at	at	RB
40119	134	37	all	all	RB
40119	134	38	but	but	IN
40119	134	39	the	the	DT
40119	134	40	energy	energy	NN
40119	134	41	of	of	IN
40119	134	42	wave	wave	NN
40119	134	43	-	-	HYPH
40119	134	44	motion	motion	NN
40119	134	45	,	,	,
40119	134	46	and	and	CC
40119	134	47	when	when	WRB
40119	134	48	the	the	DT
40119	134	49	waves	wave	NNS
40119	134	50	,	,	,
40119	134	51	encountering	encounter	VBG
40119	134	52	some	some	DT
40119	134	53	material	material	JJ
40119	134	54	obstacle	obstacle	NN
40119	134	55	which	which	WDT
40119	134	56	does	do	VBZ
40119	134	57	not	not	RB
40119	134	58	reflect	reflect	VB
40119	134	59	them	-PRON-	PRP
40119	134	60	,	,	,
40119	134	61	become	become	VBP
40119	134	62	quenched	quench	VBN
40119	134	63	,	,	,
40119	134	64	their	-PRON-	PRP$
40119	134	65	energy	energy	NN
40119	134	66	takes	take	VBZ
40119	134	67	another	another	DT
40119	134	68	form	form	NN
40119	134	69	,	,	,
40119	134	70	and	and	CC
40119	134	71	some	some	DT
40119	134	72	kind	kind	NN
40119	134	73	of	of	IN
40119	134	74	work	work	NN
40119	134	75	is	be	VBZ
40119	134	76	done	do	VBN
40119	134	77	,	,	,
40119	134	78	or	or	CC
40119	134	79	heat	heat	NN
40119	134	80	is	be	VBZ
40119	134	81	generated	generate	VBN
40119	134	82	in	in	IN
40119	134	83	the	the	DT
40119	134	84	obstacle	obstacle	NN
40119	134	85	.	.	.
40119	135	1	The	the	DT
40119	135	2	whole	whole	NN
40119	135	3	,	,	,
40119	135	4	or	or	CC
40119	135	5	at	at	IN
40119	135	6	least	least	JJS
40119	135	7	the	the	DT
40119	135	8	greater	great	JJR
40119	135	9	part	part	NN
40119	135	10	,	,	,
40119	135	11	of	of	IN
40119	135	12	the	the	DT
40119	135	13	energy	energy	NN
40119	135	14	given	give	VBN
40119	135	15	up	up	RP
40119	135	16	by	by	IN
40119	135	17	the	the	DT
40119	135	18	waves	wave	NNS
40119	135	19	is	be	VBZ
40119	135	20	in	in	IN
40119	135	21	most	most	JJS
40119	135	22	cases	case	NNS
40119	135	23	transformed	transform	VBN
40119	135	24	into	into	IN
40119	135	25	heat	heat	NN
40119	135	26	,	,	,
40119	135	27	but	but	CC
40119	135	28	under	under	IN
40119	135	29	special	special	JJ
40119	135	30	circumstances	circumstance	NNS
40119	135	31	,	,	,
40119	135	32	as	as	IN
40119	135	33	,	,	,
40119	135	34	for	for	IN
40119	135	35	instance	instance	NN
40119	135	36	,	,	,
40119	135	37	when	when	WRB
40119	135	38	the	the	DT
40119	135	39	waves	wave	NNS
40119	135	40	fall	fall	VBP
40119	135	41	upon	upon	IN
40119	135	42	a	a	DT
40119	135	43	green	green	JJ
40119	135	44	leaf	leaf	NN
40119	135	45	or	or	CC
40119	135	46	a	a	DT
40119	135	47	living	live	VBG
40119	135	48	eye	eye	NN
40119	135	49	,	,	,
40119	135	50	a	a	DT
40119	135	51	few	few	JJ
40119	135	52	of	of	IN
40119	135	53	them	-PRON-	PRP
40119	135	54	may	may	MD
40119	135	55	perform	perform	VB
40119	135	56	work	work	NN
40119	135	57	of	of	IN
40119	135	58	an	an	DT
40119	135	59	electrical	electrical	JJ
40119	135	60	or	or	CC
40119	135	61	chemical	chemical	JJ
40119	135	62	nature	nature	NN
40119	135	63	.	.	.
40119	136	1	The	the	DT
40119	136	2	process	process	NN
40119	136	3	of	of	IN
40119	136	4	the	the	DT
40119	136	5	transmission	transmission	NN
40119	136	6	of	of	IN
40119	136	7	energy	energy	NN
40119	136	8	from	from	IN
40119	136	9	one	one	CD
40119	136	10	body	body	NN
40119	136	11	to	to	IN
40119	136	12	another	another	DT
40119	136	13	by	by	IN
40119	136	14	propagation	propagation	NN
40119	136	15	through	through	IN
40119	136	16	an	an	DT
40119	136	17	intervening	intervene	VBG
40119	136	18	medium	medium	NN
40119	136	19	has	have	VBZ
40119	136	20	long	long	RB
40119	136	21	been	be	VBN
40119	136	22	spoken	speak	VBN
40119	136	23	of	of	IN
40119	136	24	as	as	IN
40119	136	25	"	"	``
40119	136	26	radiation	radiation	NN
40119	136	27	,	,	,
40119	136	28	"	"	''
40119	136	29	and	and	CC
40119	136	30	in	in	IN
40119	136	31	recent	recent	JJ
40119	136	32	years	year	NNS
40119	136	33	the	the	DT
40119	136	34	same	same	JJ
40119	136	35	term	term	NN
40119	136	36	has	have	VBZ
40119	136	37	been	be	VBN
40119	136	38	largely	largely	RB
40119	136	39	employed	employ	VBN
40119	136	40	to	to	TO
40119	136	41	denote	denote	VB
40119	136	42	the	the	DT
40119	136	43	energy	energy	NN
40119	136	44	itself	-PRON-	PRP
40119	136	45	while	while	IN
40119	136	46	in	in	IN
40119	136	47	the	the	DT
40119	136	48	stage	stage	NN
40119	136	49	of	of	IN
40119	136	50	transmission	transmission	NN
40119	136	51	.	.	.
40119	137	1	"	"	``
40119	137	2	Radiation	radiation	NN
40119	137	3	"	"	''
40119	137	4	in	in	IN
40119	137	5	the	the	DT
40119	137	6	latter	latter	JJ
40119	137	7	sense	sense	NN
40119	137	8	--	--	:
40119	137	9	meaning	mean	VBG
40119	137	10	ether	ether	NN
40119	137	11	wave	wave	NN
40119	137	12	-	-	HYPH
40119	137	13	energy	energy	NN
40119	137	14	--	--	:
40119	137	15	includes	include	VBZ
40119	137	16	what	what	WP
40119	137	17	is	be	VBZ
40119	137	18	often	often	RB
40119	137	19	improperly	improperly	RB
40119	137	20	called	call	VBN
40119	137	21	light	light	NN
40119	137	22	.	.	.
40119	138	1	Light	light	NN
40119	138	2	,	,	,
40119	138	3	people	people	NNS
40119	138	4	say	say	VBP
40119	138	5	,	,	,
40119	138	6	takes	take	VBZ
40119	138	7	about	about	RB
40119	138	8	eight	eight	CD
40119	138	9	minutes	minute	NNS
40119	138	10	in	in	IN
40119	138	11	travelling	travel	VBG
40119	138	12	from	from	IN
40119	138	13	the	the	DT
40119	138	14	sun	sun	NN
40119	138	15	to	to	IN
40119	138	16	the	the	DT
40119	138	17	earth	earth	NN
40119	138	18	.	.	.
40119	139	1	But	but	CC
40119	139	2	while	while	IN
40119	139	3	it	-PRON-	PRP
40119	139	4	is	be	VBZ
40119	139	5	on	on	IN
40119	139	6	its	-PRON-	PRP$
40119	139	7	journey	journey	NN
40119	139	8	it	-PRON-	PRP
40119	139	9	is	be	VBZ
40119	139	10	not	not	RB
40119	139	11	light	light	JJ
40119	139	12	in	in	IN
40119	139	13	the	the	DT
40119	139	14	true	true	JJ
40119	139	15	sense	sense	NN
40119	139	16	of	of	IN
40119	139	17	the	the	DT
40119	139	18	word	word	NN
40119	139	19	;	;	:
40119	139	20	neither	neither	CC
40119	139	21	does	do	VBZ
40119	139	22	anything	anything	NN
40119	139	23	of	of	IN
40119	139	24	the	the	DT
40119	139	25	nature	nature	NN
40119	139	26	of	of	IN
40119	139	27	light	light	NN
40119	139	28	ever	ever	RB
40119	139	29	start	start	VBP
40119	139	30	from	from	IN
40119	139	31	the	the	DT
40119	139	32	sun	sun	NN
40119	139	33	.	.	.
40119	140	1	Light	light	NN
40119	140	2	has	have	VBZ
40119	140	3	no	no	DT
40119	140	4	more	more	JJR
40119	140	5	existence	existence	NN
40119	140	6	in	in	IN
40119	140	7	nature	nature	NN
40119	140	8	outside	outside	IN
40119	140	9	a	a	DT
40119	140	10	living	live	VBG
40119	140	11	body	body	NN
40119	140	12	than	than	IN
40119	140	13	the	the	DT
40119	140	14	flavour	flavour	NN
40119	140	15	of	of	IN
40119	140	16	onions	onion	NNS
40119	140	17	has	have	VBZ
40119	140	18	;	;	:
40119	140	19	both	both	DT
40119	140	20	are	be	VBP
40119	140	21	merely	merely	RB
40119	140	22	sensations	sensation	NNS
40119	140	23	.	.	.
40119	141	1	If	if	IN
40119	141	2	a	a	DT
40119	141	3	boy	boy	NN
40119	141	4	throws	throw	VBZ
40119	141	5	a	a	DT
40119	141	6	stone	stone	NN
40119	141	7	which	which	WDT
40119	141	8	hits	hit	VBZ
40119	141	9	you	-PRON-	PRP
40119	141	10	in	in	IN
40119	141	11	the	the	DT
40119	141	12	face	face	NN
40119	141	13	,	,	,
40119	141	14	you	-PRON-	PRP
40119	141	15	feel	feel	VBP
40119	141	16	a	a	DT
40119	141	17	pain	pain	NN
40119	141	18	;	;	:
40119	141	19	but	but	CC
40119	141	20	you	-PRON-	PRP
40119	141	21	do	do	VBP
40119	141	22	not	not	RB
40119	141	23	say	say	VB
40119	141	24	that	that	IN
40119	141	25	it	-PRON-	PRP
40119	141	26	was	be	VBD
40119	141	27	a	a	DT
40119	141	28	pain	pain	NN
40119	141	29	which	which	WDT
40119	141	30	left	leave	VBD
40119	141	31	the	the	DT
40119	141	32	boy	boy	NN
40119	141	33	's	's	POS
40119	141	34	hand	hand	NN
40119	141	35	and	and	CC
40119	141	36	travelled	travel	VBD
40119	141	37	through	through	IN
40119	141	38	space	space	NN
40119	141	39	from	from	IN
40119	141	40	him	-PRON-	PRP
40119	141	41	to	to	IN
40119	141	42	you	-PRON-	PRP
40119	141	43	.	.	.
40119	142	1	The	the	DT
40119	142	2	stone	stone	NN
40119	142	3	,	,	,
40119	142	4	instead	instead	RB
40119	142	5	of	of	IN
40119	142	6	causing	cause	VBG
40119	142	7	pain	pain	NN
40119	142	8	in	in	IN
40119	142	9	a	a	DT
40119	142	10	sentient	sentient	NN
40119	142	11	being	be	VBG
40119	142	12	,	,	,
40119	142	13	might	may	MD
40119	142	14	have	have	VB
40119	142	15	broken	break	VBN
40119	142	16	a	a	DT
40119	142	17	window	window	NN
40119	142	18	,	,	,
40119	142	19	or	or	CC
40119	142	20	knocked	knock	VBD
40119	142	21	down	down	RP
40119	142	22	an	an	DT
40119	142	23	apple	apple	NN
40119	142	24	.	.	.
40119	143	1	Just	just	RB
40119	143	2	so	so	RB
40119	143	3	,	,	,
40119	143	4	the	the	DT
40119	143	5	same	same	JJ
40119	143	6	radiation	radiation	NN
40119	143	7	which	which	WDT
40119	143	8	,	,	,
40119	143	9	when	when	WRB
40119	143	10	it	-PRON-	PRP
40119	143	11	chances	chance	VBZ
40119	143	12	to	to	TO
40119	143	13	encounter	encounter	VB
40119	143	14	an	an	DT
40119	143	15	eye	eye	NN
40119	143	16	,	,	,
40119	143	17	produces	produce	VBZ
40119	143	18	a	a	DT
40119	143	19	certain	certain	JJ
40119	143	20	sensation	sensation	NN
40119	143	21	,	,	,
40119	143	22	will	will	MD
40119	143	23	produce	produce	VB
40119	143	24	a	a	DT
40119	143	25	chemical	chemical	JJ
40119	143	26	decomposition	decomposition	NN
40119	143	27	if	if	IN
40119	143	28	it	-PRON-	PRP
40119	143	29	falls	fall	VBZ
40119	143	30	upon	upon	IN
40119	143	31	a	a	DT
40119	143	32	cabbage	cabbage	NN
40119	143	33	,	,	,
40119	143	34	an	an	DT
40119	143	35	electrical	electrical	JJ
40119	143	36	effect	effect	NN
40119	143	37	in	in	IN
40119	143	38	a	a	DT
40119	143	39	selenium	selenium	NN
40119	143	40	cell	cell	NN
40119	143	41	,	,	,
40119	143	42	or	or	CC
40119	143	43	a	a	DT
40119	143	44	heating	heating	NN
40119	143	45	effect	effect	NN
40119	143	46	in	in	IN
40119	143	47	almost	almost	RB
40119	143	48	anything	anything	NN
40119	143	49	.	.	.
40119	144	1	Why	why	WRB
40119	144	2	,	,	,
40119	144	3	then	then	RB
40119	144	4	,	,	,
40119	144	5	should	should	MD
40119	144	6	it	-PRON-	PRP
40119	144	7	be	be	VB
40119	144	8	specially	specially	RB
40119	144	9	identified	identify	VBN
40119	144	10	with	with	IN
40119	144	11	the	the	DT
40119	144	12	sensation	sensation	NN
40119	144	13	?	?	.
40119	145	1	"	"	``
40119	145	2	Radiation	Radiation	NNP
40119	145	3	"	"	''
40119	145	4	also	also	RB
40119	145	5	includes	include	VBZ
40119	145	6	,	,	,
40119	145	7	and	and	CC
40119	145	8	is	be	VBZ
40119	145	9	nearly	nearly	RB
40119	145	10	synonymous	synonymous	JJ
40119	145	11	with	with	IN
40119	145	12	,	,	,
40119	145	13	what	what	WP
40119	145	14	is	be	VBZ
40119	145	15	often	often	RB
40119	145	16	miscalled	miscall	VBN
40119	145	17	radiant	radiant	JJ
40119	145	18	heat	heat	NN
40119	145	19	.	.	.
40119	146	1	After	after	IN
40119	146	2	what	what	WP
40119	146	3	has	have	VBZ
40119	146	4	been	be	VBN
40119	146	5	already	already	RB
40119	146	6	indicated	indicate	VBN
40119	146	7	,	,	,
40119	146	8	I	-PRON-	PRP
40119	146	9	need	need	VBP
40119	146	10	hardly	hardly	RB
40119	146	11	say	say	VB
40119	146	12	that	that	IN
40119	146	13	there	there	EX
40119	146	14	is	be	VBZ
40119	146	15	no	no	DT
40119	146	16	such	such	JJ
40119	146	17	thing	thing	NN
40119	146	18	as	as	IN
40119	146	19	radiant	radiant	JJ
40119	146	20	heat	heat	NN
40119	146	21	.	.	.
40119	147	1	The	the	DT
40119	147	2	truth	truth	NN
40119	147	3	is	be	VBZ
40119	147	4	that	that	IN
40119	147	5	the	the	DT
40119	147	6	sun	sun	NN
40119	147	7	or	or	CC
40119	147	8	other	other	JJ
40119	147	9	hot	hot	JJ
40119	147	10	body	body	NN
40119	147	11	generates	generate	VBZ
40119	147	12	wave	wave	NN
40119	147	13	-	-	HYPH
40119	147	14	energy	energy	NN
40119	147	15	in	in	IN
40119	147	16	the	the	DT
40119	147	17	ether	ether	NN
40119	147	18	at	at	IN
40119	147	19	the	the	DT
40119	147	20	expense	expense	NN
40119	147	21	of	of	IN
40119	147	22	some	some	DT
40119	147	23	of	of	IN
40119	147	24	its	-PRON-	PRP$
40119	147	25	own	own	JJ
40119	147	26	heat	heat	NN
40119	147	27	,	,	,
40119	147	28	and	and	CC
40119	147	29	any	any	DT
40119	147	30	distant	distant	JJ
40119	147	31	substance	substance	NN
40119	147	32	which	which	WDT
40119	147	33	absorbs	absorb	VBZ
40119	147	34	a	a	DT
40119	147	35	portion	portion	NN
40119	147	36	of	of	IN
40119	147	37	this	this	DT
40119	147	38	energy	energy	NN
40119	147	39	generally	generally	RB
40119	147	40	(	(	-LRB-
40119	147	41	but	but	CC
40119	147	42	not	not	RB
40119	147	43	necessarily	necessarily	RB
40119	147	44	)	)	-RRB-
40119	147	45	acquires	acquire	VBZ
40119	147	46	an	an	DT
40119	147	47	equivalent	equivalent	JJ
40119	147	48	quantity	quantity	NN
40119	147	49	of	of	IN
40119	147	50	heat	heat	NN
40119	147	51	.	.	.
40119	148	1	The	the	DT
40119	148	2	_	_	NNP
40119	148	3	result	result	NN
40119	148	4	_	_	NNP
40119	148	5	may	may	MD
40119	148	6	be	be	VB
40119	148	7	exactly	exactly	RB
40119	148	8	the	the	DT
40119	148	9	same	same	JJ
40119	148	10	as	as	IN
40119	148	11	if	if	IN
40119	148	12	heat	heat	NN
40119	148	13	left	leave	VBD
40119	148	14	the	the	DT
40119	148	15	hot	hot	JJ
40119	148	16	body	body	NN
40119	148	17	and	and	CC
40119	148	18	travelled	travel	VBD
40119	148	19	across	across	IN
40119	148	20	space	space	NN
40119	148	21	to	to	IN
40119	148	22	the	the	DT
40119	148	23	substance	substance	NN
40119	148	24	;	;	:
40119	148	25	but	but	CC
40119	148	26	the	the	DT
40119	148	27	_	_	NNP
40119	148	28	process	process	NN
40119	148	29	_	_	NNP
40119	148	30	is	be	VBZ
40119	148	31	different	different	JJ
40119	148	32	.	.	.
40119	149	1	It	-PRON-	PRP
40119	149	2	is	be	VBZ
40119	149	3	like	like	IN
40119	149	4	sending	send	VBG
40119	149	5	a	a	DT
40119	149	6	sovereign	sovereign	NN
40119	149	7	to	to	IN
40119	149	8	a	a	DT
40119	149	9	friend	friend	NN
40119	149	10	by	by	IN
40119	149	11	a	a	DT
40119	149	12	postal	postal	JJ
40119	149	13	order	order	NN
40119	149	14	.	.	.
40119	150	1	You	-PRON-	PRP
40119	150	2	part	part	NN
40119	150	3	with	with	IN
40119	150	4	a	a	DT
40119	150	5	sovereign	sovereign	NN
40119	150	6	and	and	CC
40119	150	7	he	-PRON-	PRP
40119	150	8	receives	receive	VBZ
40119	150	9	one	one	CD
40119	150	10	,	,	,
40119	150	11	but	but	CC
40119	150	12	the	the	DT
40119	150	13	piece	piece	NN
40119	150	14	of	of	IN
40119	150	15	paper	paper	NN
40119	150	16	which	which	WDT
40119	150	17	goes	go	VBZ
40119	150	18	through	through	IN
40119	150	19	the	the	DT
40119	150	20	post	post	NN
40119	150	21	is	be	VBZ
40119	150	22	not	not	RB
40119	150	23	a	a	DT
40119	150	24	sovereign	sovereign	NN
40119	150	25	.	.	.
40119	151	1	It	-PRON-	PRP
40119	151	2	is	be	VBZ
40119	151	3	strictly	strictly	RB
40119	151	4	correct	correct	JJ
40119	151	5	to	to	TO
40119	151	6	say	say	VB
40119	151	7	that	that	IN
40119	151	8	the	the	DT
40119	151	9	sun	sun	NN
40119	151	10	loses	lose	VBZ
40119	151	11	heat	heat	NN
40119	151	12	by	by	IN
40119	151	13	radiation	radiation	NN
40119	151	14	,	,	,
40119	151	15	just	just	RB
40119	151	16	as	as	IN
40119	151	17	you	-PRON-	PRP
40119	151	18	lose	lose	VBP
40119	151	19	a	a	DT
40119	151	20	sovereign	sovereign	NN
40119	151	21	by	by	IN
40119	151	22	investing	invest	VBG
40119	151	23	it	-PRON-	PRP
40119	151	24	in	in	IN
40119	151	25	the	the	DT
40119	151	26	purchase	purchase	NN
40119	151	27	of	of	IN
40119	151	28	a	a	DT
40119	151	29	postal	postal	JJ
40119	151	30	order	order	NN
40119	151	31	.	.	.
40119	152	1	But	but	CC
40119	152	2	that	that	DT
40119	152	3	is	be	VBZ
40119	152	4	not	not	RB
40119	152	5	the	the	DT
40119	152	6	same	same	JJ
40119	152	7	thing	thing	NN
40119	152	8	as	as	IN
40119	152	9	saying	say	VBG
40119	152	10	that	that	IN
40119	152	11	the	the	DT
40119	152	12	sun	sun	NN
40119	152	13	radiates	radiate	VBZ
40119	152	14	heat	heat	VBP
40119	152	15	.	.	.
40119	153	1	The	the	DT
40119	153	2	term	term	NN
40119	153	3	"	"	``
40119	153	4	radiation	radiation	NN
40119	153	5	"	"	''
40119	153	6	has	have	VBZ
40119	153	7	the	the	DT
40119	153	8	advantage	advantage	NN
40119	153	9	of	of	IN
40119	153	10	avoiding	avoid	VBG
40119	153	11	any	any	DT
40119	153	12	suggestion	suggestion	NN
40119	153	13	of	of	IN
40119	153	14	the	the	DT
40119	153	15	fallacy	fallacy	NN
40119	153	16	that	that	IN
40119	153	17	there	there	EX
40119	153	18	is	be	VBZ
40119	153	19	some	some	DT
40119	153	20	essential	essential	JJ
40119	153	21	difference	difference	NN
40119	153	22	in	in	IN
40119	153	23	the	the	DT
40119	153	24	nature	nature	NN
40119	153	25	of	of	IN
40119	153	26	the	the	DT
40119	153	27	ether	ether	NN
40119	153	28	-	-	HYPH
40119	153	29	waves	wave	NNS
40119	153	30	which	which	WDT
40119	153	31	may	may	MD
40119	153	32	happen	happen	VB
40119	153	33	to	to	TO
40119	153	34	terminate	terminate	VB
40119	153	35	their	-PRON-	PRP$
40119	153	36	respective	respective	JJ
40119	153	37	careers	career	NNS
40119	153	38	in	in	IN
40119	153	39	the	the	DT
40119	153	40	production	production	NN
40119	153	41	of	of	IN
40119	153	42	light	light	NN
40119	153	43	or	or	CC
40119	153	44	heat	heat	NN
40119	153	45	or	or	CC
40119	153	46	chemical	chemical	NN
40119	153	47	action	action	NN
40119	153	48	or	or	CC
40119	153	49	something	something	NN
40119	153	50	else	else	RB
40119	153	51	;	;	:
40119	153	52	but	but	CC
40119	153	53	it	-PRON-	PRP
40119	153	54	is	be	VBZ
40119	153	55	,	,	,
40119	153	56	unfortunately	unfortunately	RB
40119	153	57	,	,	,
40119	153	58	impossible	impossible	JJ
40119	153	59	in	in	IN
40119	153	60	the	the	DT
40119	153	61	present	present	JJ
40119	153	62	condition	condition	NN
40119	153	63	of	of	IN
40119	153	64	things	thing	NNS
40119	153	65	to	to	TO
40119	153	66	use	use	VB
40119	153	67	it	-PRON-	PRP
40119	153	68	as	as	RB
40119	153	69	freely	freely	RB
40119	153	70	as	as	IN
40119	153	71	one	one	PRP
40119	153	72	could	could	MD
40119	153	73	wish	wish	VB
40119	153	74	without	without	IN
40119	153	75	pedantry	pedantry	NN
40119	153	76	,	,	,
40119	153	77	and	and	CC
40119	153	78	we	-PRON-	PRP
40119	153	79	must	must	MD
40119	153	80	still	still	RB
40119	153	81	often	often	RB
40119	153	82	speak	speak	VB
40119	153	83	of	of	IN
40119	153	84	light	light	NN
40119	153	85	or	or	CC
40119	153	86	of	of	IN
40119	153	87	heat	heat	NN
40119	153	88	when	when	WRB
40119	153	89	radiation	radiation	NN
40119	153	90	would	would	MD
40119	153	91	express	express	VB
40119	153	92	our	-PRON-	PRP$
40119	153	93	meaning	meaning	NN
40119	153	94	with	with	IN
40119	153	95	greater	great	JJR
40119	153	96	accuracy	accuracy	NN
40119	153	97	.	.	.
40119	154	1	Light	light	NN
40119	154	2	,	,	,
40119	154	3	then	then	RB
40119	154	4	--	--	:
40119	154	5	to	to	TO
40119	154	6	use	use	VB
40119	154	7	the	the	DT
40119	154	8	term	term	NN
40119	154	9	unblushingly	unblushingly	RB
40119	154	10	in	in	IN
40119	154	11	its	-PRON-	PRP$
40119	154	12	objectionable	objectionable	JJ
40119	154	13	but	but	CC
40119	154	14	well	well	RB
40119	154	15	understood	understand	VBN
40119	154	16	sense	sense	NN
40119	154	17	--	--	:
40119	154	18	has	have	VBZ
40119	154	19	the	the	DT
40119	154	20	property	property	NN
40119	154	21	of	of	IN
40119	154	22	stimulating	stimulate	VBG
40119	154	23	certain	certain	JJ
40119	154	24	nerves	nerve	NNS
40119	154	25	which	which	WDT
40119	154	26	exist	exist	VBP
40119	154	27	in	in	IN
40119	154	28	many	many	JJ
40119	154	29	living	live	VBG
40119	154	30	beings	being	NNS
40119	154	31	,	,	,
40119	154	32	with	with	IN
40119	154	33	the	the	DT
40119	154	34	result	result	NN
40119	154	35	that	that	IN
40119	154	36	,	,	,
40119	154	37	in	in	IN
40119	154	38	some	some	DT
40119	154	39	unknown	unknown	JJ
40119	154	40	and	and	CC
40119	154	41	probably	probably	RB
40119	154	42	unknowable	unknowable	JJ
40119	154	43	manner	manner	NN
40119	154	44	,	,	,
40119	154	45	a	a	DT
40119	154	46	special	special	JJ
40119	154	47	sensation	sensation	NN
40119	154	48	is	be	VBZ
40119	154	49	called	call	VBN
40119	154	50	into	into	IN
40119	154	51	play	play	NN
40119	154	52	--	--	:
40119	154	53	the	the	DT
40119	154	54	sensation	sensation	NN
40119	154	55	of	of	IN
40119	154	56	luminosity	luminosity	NN
40119	154	57	.	.	.
40119	155	1	And	and	CC
40119	155	2	in	in	IN
40119	155	3	order	order	NN
40119	155	4	that	that	IN
40119	155	5	the	the	DT
40119	155	6	creature	creature	NN
40119	155	7	may	may	MD
40119	155	8	be	be	VB
40119	155	9	able	able	JJ
40119	155	10	not	not	RB
40119	155	11	only	only	RB
40119	155	12	to	to	TO
40119	155	13	perceive	perceive	VB
40119	155	14	light	light	NN
40119	155	15	but	but	CC
40119	155	16	also	also	RB
40119	155	17	to	to	TO
40119	155	18	see	see	VB
40119	155	19	things	thing	NNS
40119	155	20	,	,	,
40119	155	21	that	that	RB
40119	155	22	is	is	RB
40119	155	23	,	,	,
40119	155	24	to	to	TO
40119	155	25	appreciate	appreciate	VB
40119	155	26	the	the	DT
40119	155	27	forms	form	NNS
40119	155	28	of	of	IN
40119	155	29	external	external	JJ
40119	155	30	objects	object	NNS
40119	155	31	,	,	,
40119	155	32	it	-PRON-	PRP
40119	155	33	is	be	VBZ
40119	155	34	generally	generally	RB
40119	155	35	provided	provide	VBN
40119	155	36	with	with	IN
40119	155	37	an	an	DT
40119	155	38	optical	optical	JJ
40119	155	39	apparatus	apparatus	NN
40119	155	40	by	by	IN
40119	155	41	means	mean	NNS
40119	155	42	of	of	IN
40119	155	43	which	which	WDT
40119	155	44	the	the	DT
40119	155	45	incident	incident	NN
40119	155	46	light	light	NN
40119	155	47	is	be	VBZ
40119	155	48	suitably	suitably	RB
40119	155	49	distributed	distribute	VBN
40119	155	50	over	over	IN
40119	155	51	a	a	DT
40119	155	52	large	large	JJ
40119	155	53	number	number	NN
40119	155	54	of	of	IN
40119	155	55	independent	independent	JJ
40119	155	56	sensitive	sensitive	JJ
40119	155	57	elements	element	NNS
40119	155	58	.	.	.
40119	156	1	In	in	IN
40119	156	2	man	man	NN
40119	156	3	and	and	CC
40119	156	4	the	the	DT
40119	156	5	higher	high	JJR
40119	156	6	animals	animal	NNS
40119	156	7	the	the	DT
40119	156	8	optical	optical	JJ
40119	156	9	apparatus	apparatus	NN
40119	156	10	,	,	,
40119	156	11	or	or	CC
40119	156	12	eye	eye	NN
40119	156	13	,	,	,
40119	156	14	consists	consist	VBZ
40119	156	15	of	of	IN
40119	156	16	a	a	DT
40119	156	17	stiff	stiff	JJ
40119	156	18	globular	globular	JJ
40119	156	19	shell	shell	NN
40119	156	20	,	,	,
40119	156	21	having	have	VBG
40119	156	22	in	in	IN
40119	156	23	front	front	NN
40119	156	24	an	an	DT
40119	156	25	opening	opening	NN
40119	156	26	provided	provide	VBN
40119	156	27	with	with	IN
40119	156	28	a	a	DT
40119	156	29	system	system	NN
40119	156	30	of	of	IN
40119	156	31	lenses	lense	NNS
40119	156	32	,	,	,
40119	156	33	and	and	CC
40119	156	34	,	,	,
40119	156	35	at	at	IN
40119	156	36	the	the	DT
40119	156	37	back	back	NN
40119	156	38	of	of	IN
40119	156	39	the	the	DT
40119	156	40	interior	interior	NN
40119	156	41	,	,	,
40119	156	42	a	a	DT
40119	156	43	delicate	delicate	JJ
40119	156	44	perceptive	perceptive	JJ
40119	156	45	membrane	membrane	NN
40119	156	46	,	,	,
40119	156	47	upon	upon	IN
40119	156	48	which	which	WDT
40119	156	49	the	the	DT
40119	156	50	transmitted	transmit	VBN
40119	156	51	light	light	NN
40119	156	52	is	be	VBZ
40119	156	53	received	receive	VBN
40119	156	54	.	.	.
40119	157	1	So	so	RB
40119	157	2	much	much	JJ
40119	157	3	of	of	IN
40119	157	4	the	the	DT
40119	157	5	light	light	NN
40119	157	6	emitted	emit	VBD
40119	157	7	or	or	CC
40119	157	8	reflected	reflect	VBN
40119	157	9	from	from	IN
40119	157	10	an	an	DT
40119	157	11	external	external	JJ
40119	157	12	object	object	NN
40119	157	13	as	as	IN
40119	157	14	passes	pass	VBZ
40119	157	15	through	through	IN
40119	157	16	the	the	DT
40119	157	17	lenses	lense	NNS
40119	157	18	,	,	,
40119	157	19	is	be	VBZ
40119	157	20	distributed	distribute	VBN
40119	157	21	by	by	IN
40119	157	22	them	-PRON-	PRP
40119	157	23	in	in	IN
40119	157	24	such	such	PDT
40119	157	25	a	a	DT
40119	157	26	manner	manner	NN
40119	157	27	as	as	IN
40119	157	28	to	to	TO
40119	157	29	form	form	VB
40119	157	30	what	what	WP
40119	157	31	is	be	VBZ
40119	157	32	called	call	VBN
40119	157	33	an	an	DT
40119	157	34	"	"	``
40119	157	35	image	image	NN
40119	157	36	"	"	''
40119	157	37	upon	upon	IN
40119	157	38	the	the	DT
40119	157	39	membrane	membrane	NN
40119	157	40	,	,	,
40119	157	41	every	every	DT
40119	157	42	elementary	elementary	JJ
40119	157	43	point	point	NN
40119	157	44	of	of	IN
40119	157	45	the	the	DT
40119	157	46	image	image	NN
40119	157	47	receiving	receive	VBG
40119	157	48	the	the	DT
40119	157	49	light	light	NN
40119	157	50	which	which	WDT
40119	157	51	issues	issue	NNS
40119	157	52	from	from	IN
40119	157	53	a	a	DT
40119	157	54	corresponding	corresponding	JJ
40119	157	55	point	point	NN
40119	157	56	of	of	IN
40119	157	57	the	the	DT
40119	157	58	object	object	NN
40119	157	59	,	,	,
40119	157	60	and	and	CC
40119	157	61	no	no	DT
40119	157	62	other	other	JJ
40119	157	63	.	.	.
40119	158	1	The	the	DT
40119	158	2	contrivance	contrivance	NN
40119	158	3	evidently	evidently	RB
40119	158	4	bears	bear	VBZ
40119	158	5	a	a	DT
40119	158	6	close	close	JJ
40119	158	7	resemblance	resemblance	NN
40119	158	8	to	to	IN
40119	158	9	a	a	DT
40119	158	10	photographic	photographic	JJ
40119	158	11	camera	camera	NN
40119	158	12	,	,	,
40119	158	13	the	the	DT
40119	158	14	sensitive	sensitive	JJ
40119	158	15	plate	plate	NN
40119	158	16	or	or	CC
40119	158	17	film	film	NN
40119	158	18	,	,	,
40119	158	19	upon	upon	IN
40119	158	20	which	which	WDT
40119	158	21	the	the	DT
40119	158	22	picture	picture	NN
40119	158	23	is	be	VBZ
40119	158	24	projected	project	VBN
40119	158	25	,	,	,
40119	158	26	being	be	VBG
40119	158	27	analogous	analogous	JJ
40119	158	28	to	to	IN
40119	158	29	the	the	DT
40119	158	30	perceptive	perceptive	JJ
40119	158	31	membrane	membrane	NN
40119	158	32	.	.	.
40119	159	1	I	-PRON-	PRP
40119	159	2	am	be	VBP
40119	159	3	not	not	RB
40119	159	4	going	go	VBG
40119	159	5	to	to	TO
40119	159	6	attempt	attempt	VB
40119	159	7	a	a	DT
40119	159	8	detailed	detailed	JJ
40119	159	9	description	description	NN
40119	159	10	of	of	IN
40119	159	11	the	the	DT
40119	159	12	human	human	JJ
40119	159	13	eye	eye	NN
40119	159	14	.	.	.
40119	160	1	It	-PRON-	PRP
40119	160	2	will	will	MD
40119	160	3	be	be	VB
40119	160	4	sufficient	sufficient	JJ
40119	160	5	to	to	TO
40119	160	6	point	point	VB
40119	160	7	out	out	RP
40119	160	8	briefly	briefly	RB
40119	160	9	some	some	DT
40119	160	10	of	of	IN
40119	160	11	its	-PRON-	PRP$
40119	160	12	principal	principal	JJ
40119	160	13	features	feature	NNS
40119	160	14	as	as	IN
40119	160	15	indicated	indicate	VBN
40119	160	16	in	in	IN
40119	160	17	the	the	DT
40119	160	18	annexed	annex	VBN
40119	160	19	diagrammatic	diagrammatic	JJ
40119	160	20	section	section	NN
40119	160	21	,	,	,
40119	160	22	Fig	Fig	NNP
40119	160	23	.	.	.
40119	161	1	2	2	LS
40119	161	2	.	.	.
40119	162	1	[	[	-LRB-
40119	162	2	Illustration	illustration	NN
40119	162	3	:	:	:
40119	162	4	_	_	NNP
40119	162	5	Fig	Fig	NNP
40119	162	6	.	.	.
40119	163	1	2.--Diagram	2.--diagram	CD
40119	163	2	of	of	IN
40119	163	3	the	the	DT
40119	163	4	Eye	Eye	NNP
40119	163	5	.	.	.
40119	163	6	_	_	NNP
40119	163	7	]	]	-RRB-
40119	163	8	The	the	DT
40119	163	9	opening	opening	NN
40119	163	10	in	in	IN
40119	163	11	front	front	NN
40119	163	12	of	of	IN
40119	163	13	the	the	DT
40119	163	14	globe	globe	NN
40119	163	15	is	be	VBZ
40119	163	16	covered	cover	VBN
40119	163	17	by	by	IN
40119	163	18	a	a	DT
40119	163	19	slightly	slightly	RB
40119	163	20	protuberant	protuberant	JJ
40119	163	21	transparent	transparent	JJ
40119	163	22	medium	medium	NN
40119	163	23	C	C	NNP
40119	163	24	,	,	,
40119	163	25	which	which	WDT
40119	163	26	is	be	VBZ
40119	163	27	shaped	shape	VBN
40119	163	28	like	like	IN
40119	163	29	a	a	DT
40119	163	30	small	small	JJ
40119	163	31	watch	watch	NN
40119	163	32	-	-	HYPH
40119	163	33	glass	glass	NN
40119	163	34	,	,	,
40119	163	35	and	and	CC
40119	163	36	on	on	IN
40119	163	37	account	account	NN
40119	163	38	of	of	IN
40119	163	39	its	-PRON-	PRP$
40119	163	40	horn	horn	NN
40119	163	41	-	-	HYPH
40119	163	42	like	like	JJ
40119	163	43	structure	structure	NN
40119	163	44	has	have	VBZ
40119	163	45	been	be	VBN
40119	163	46	named	name	VBN
40119	163	47	the	the	DT
40119	163	48	_	_	NNP
40119	163	49	cornea	cornea	NN
40119	163	50	_	_	NNP
40119	163	51	.	.	.
40119	164	1	The	the	DT
40119	164	2	space	space	NN
40119	164	3	between	between	IN
40119	164	4	the	the	DT
40119	164	5	cornea	cornea	JJ
40119	164	6	C	C	NNP
40119	164	7	and	and	CC
40119	164	8	the	the	DT
40119	164	9	body	body	NN
40119	164	10	marked	mark	VBD
40119	164	11	L	L	NNP
40119	164	12	is	be	VBZ
40119	164	13	filled	fill	VBN
40119	164	14	with	with	IN
40119	164	15	a	a	DT
40119	164	16	watery	watery	JJ
40119	164	17	liquid	liquid	NN
40119	164	18	A	a	NN
40119	164	19	,	,	,
40119	164	20	known	know	VBN
40119	164	21	as	as	IN
40119	164	22	the	the	DT
40119	164	23	aqueous	aqueous	JJ
40119	164	24	humour	humour	NN
40119	164	25	:	:	:
40119	164	26	this	this	DT
40119	164	27	liquid	liquid	NN
40119	164	28	with	with	IN
40119	164	29	its	-PRON-	PRP$
40119	164	30	curved	curved	JJ
40119	164	31	surfaces	surface	NNS
40119	164	32	constitutes	constitute	VBZ
40119	164	33	a	a	DT
40119	164	34	meniscus	meniscus	JJ
40119	164	35	lens	lens	NN
40119	164	36	,	,	,
40119	164	37	convex	convex	NNS
40119	164	38	on	on	IN
40119	164	39	the	the	DT
40119	164	40	outer	outer	JJ
40119	164	41	side	side	NN
40119	164	42	and	and	CC
40119	164	43	concave	concave	NNP
40119	164	44	on	on	IN
40119	164	45	the	the	DT
40119	164	46	inner	inner	JJ
40119	164	47	.	.	.
40119	165	1	Then	then	RB
40119	165	2	comes	come	VBZ
40119	165	3	the	the	DT
40119	165	4	biconvex	biconvex	NNP
40119	165	5	_	_	NNP
40119	165	6	crystalline	crystalline	NN
40119	165	7	lens	lens	NN
40119	165	8	_	_	NNP
40119	165	9	L	L	NNP
40119	165	10	,	,	,
40119	165	11	an	an	DT
40119	165	12	elastic	elastic	JJ
40119	165	13	gelatinous	gelatinous	JJ
40119	165	14	-	-	HYPH
40119	165	15	looking	look	VBG
40119	165	16	solid	solid	JJ
40119	165	17	,	,	,
40119	165	18	which	which	WDT
40119	165	19	is	be	VBZ
40119	165	20	easily	easily	RB
40119	165	21	distorted	distort	VBN
40119	165	22	by	by	IN
40119	165	23	pressure	pressure	NN
40119	165	24	.	.	.
40119	166	1	The	the	DT
40119	166	2	convexity	convexity	NN
40119	166	3	of	of	IN
40119	166	4	this	this	DT
40119	166	5	lens	lens	NN
40119	166	6	can	can	MD
40119	166	7	be	be	VB
40119	166	8	varied	vary	VBN
40119	166	9	by	by	IN
40119	166	10	the	the	DT
40119	166	11	action	action	NN
40119	166	12	of	of	IN
40119	166	13	a	a	DT
40119	166	14	surrounding	surround	VBG
40119	166	15	muscle	muscle	NN
40119	166	16	M	M	NNP
40119	166	17	M	M	NNP
40119	166	18	,	,	,
40119	166	19	and	and	CC
40119	166	20	in	in	IN
40119	166	21	this	this	DT
40119	166	22	way	way	NN
40119	166	23	the	the	DT
40119	166	24	focus	focus	NN
40119	166	25	is	be	VBZ
40119	166	26	adjusted	adjust	VBN
40119	166	27	for	for	IN
40119	166	28	objects	object	NNS
40119	166	29	at	at	IN
40119	166	30	different	different	JJ
40119	166	31	distances	distance	NNS
40119	166	32	from	from	IN
40119	166	33	the	the	DT
40119	166	34	eye	eye	NN
40119	166	35	.	.	.
40119	167	1	When	when	WRB
40119	167	2	the	the	DT
40119	167	3	muscle	muscle	NN
40119	167	4	is	be	VBZ
40119	167	5	relaxed	relaxed	JJ
40119	167	6	and	and	CC
40119	167	7	the	the	DT
40119	167	8	lens	lens	NN
40119	167	9	in	in	IN
40119	167	10	its	-PRON-	PRP$
40119	167	11	natural	natural	JJ
40119	167	12	condition	condition	NN
40119	167	13	,	,	,
40119	167	14	the	the	DT
40119	167	15	curvature	curvature	NN
40119	167	16	of	of	IN
40119	167	17	its	-PRON-	PRP$
40119	167	18	surfaces	surface	NNS
40119	167	19	is	be	VBZ
40119	167	20	such	such	JJ
40119	167	21	that	that	IN
40119	167	22	a	a	DT
40119	167	23	sharp	sharp	JJ
40119	167	24	image	image	NN
40119	167	25	is	be	VBZ
40119	167	26	formed	form	VBN
40119	167	27	of	of	IN
40119	167	28	objects	object	NNS
40119	167	29	distant	distant	JJ
40119	167	30	about	about	RB
40119	167	31	forty	forty	CD
40119	167	32	feet	foot	NNS
40119	167	33	and	and	CC
40119	167	34	upwards	upward	NNS
40119	167	35	.	.	.
40119	168	1	When	when	WRB
40119	168	2	by	by	IN
40119	168	3	an	an	DT
40119	168	4	effort	effort	NN
40119	168	5	of	of	IN
40119	168	6	will	will	NN
40119	168	7	,	,	,
40119	168	8	the	the	DT
40119	168	9	muscle	muscle	NN
40119	168	10	is	be	VBZ
40119	168	11	contracted	contract	VBN
40119	168	12	,	,	,
40119	168	13	the	the	DT
40119	168	14	lens	lens	NN
40119	168	15	becomes	become	VBZ
40119	168	16	more	more	JJR
40119	168	17	convex	convex	NNS
40119	168	18	,	,	,
40119	168	19	and	and	CC
40119	168	20	distinct	distinct	JJ
40119	168	21	pictures	picture	NNS
40119	168	22	can	can	MD
40119	168	23	thus	thus	RB
40119	168	24	be	be	VB
40119	168	25	focussed	focusse	VBN
40119	168	26	of	of	IN
40119	168	27	things	thing	NNS
40119	168	28	which	which	WDT
40119	168	29	are	be	VBP
40119	168	30	only	only	RB
40119	168	31	a	a	DT
40119	168	32	few	few	JJ
40119	168	33	inches	inch	NNS
40119	168	34	away	away	RB
40119	168	35	.	.	.
40119	169	1	This	this	DT
40119	169	2	process	process	NN
40119	169	3	of	of	IN
40119	169	4	adjustment	adjustment	NN
40119	169	5	by	by	IN
40119	169	6	muscular	muscular	JJ
40119	169	7	effort	effort	NN
40119	169	8	is	be	VBZ
40119	169	9	technically	technically	RB
40119	169	10	known	know	VBN
40119	169	11	as	as	IN
40119	169	12	"	"	``
40119	169	13	accommodation	accommodation	NN
40119	169	14	.	.	.
40119	169	15	"	"	''
40119	170	1	The	the	DT
40119	170	2	remainder	remainder	NN
40119	170	3	of	of	IN
40119	170	4	the	the	DT
40119	170	5	globe	globe	NN
40119	170	6	is	be	VBZ
40119	170	7	filled	fill	VBN
40119	170	8	with	with	IN
40119	170	9	the	the	DT
40119	170	10	so	so	RB
40119	170	11	-	-	HYPH
40119	170	12	called	call	VBN
40119	170	13	_	_	NNP
40119	170	14	vitreous	vitreous	JJ
40119	170	15	body	body	NN
40119	170	16	_	_	NNP
40119	170	17	V	V	NNP
40119	170	18	,	,	,
40119	170	19	which	which	WDT
40119	170	20	derives	derive	VBZ
40119	170	21	its	-PRON-	PRP$
40119	170	22	name	name	NN
40119	170	23	from	from	IN
40119	170	24	its	-PRON-	PRP$
40119	170	25	fancied	fancy	VBN
40119	170	26	resemblance	resemblance	NN
40119	170	27	to	to	IN
40119	170	28	liquid	liquid	JJ
40119	170	29	glass	glass	NN
40119	170	30	:	:	:
40119	170	31	it	-PRON-	PRP
40119	170	32	might	may	MD
40119	170	33	perhaps	perhaps	RB
40119	170	34	be	be	VB
40119	170	35	more	more	RBR
40119	170	36	properly	properly	RB
40119	170	37	likened	liken	VBN
40119	170	38	to	to	IN
40119	170	39	a	a	DT
40119	170	40	thin	thin	JJ
40119	170	41	colourless	colourless	NN
40119	170	42	jelly	jelly	NNP
40119	170	43	.	.	.
40119	171	1	The	the	DT
40119	171	2	vitreous	vitreous	JJ
40119	171	3	body	body	NN
40119	171	4	plays	play	VBZ
40119	171	5	a	a	DT
40119	171	6	part	part	NN
40119	171	7	in	in	IN
40119	171	8	the	the	DT
40119	171	9	refraction	refraction	NN
40119	171	10	of	of	IN
40119	171	11	the	the	DT
40119	171	12	light	light	NN
40119	171	13	.	.	.
40119	172	1	The	the	DT
40119	172	2	perceptive	perceptive	JJ
40119	172	3	membrane	membrane	NN
40119	172	4	,	,	,
40119	172	5	or	or	CC
40119	172	6	_	_	NNP
40119	172	7	retina	retina	NNP
40119	172	8	_	_	NNP
40119	172	9	R	R	NNP
40119	172	10	R	R	NNP
40119	172	11	,	,	,
40119	172	12	which	which	WDT
40119	172	13	lines	line	NNS
40119	172	14	rather	rather	RB
40119	172	15	more	more	JJR
40119	172	16	than	than	IN
40119	172	17	half	half	PDT
40119	172	18	the	the	DT
40119	172	19	interior	interior	NN
40119	172	20	of	of	IN
40119	172	21	the	the	DT
40119	172	22	eye	eye	NN
40119	172	23	-	-	HYPH
40119	172	24	ball	ball	NN
40119	172	25	,	,	,
40119	172	26	is	be	VBZ
40119	172	27	an	an	DT
40119	172	28	exceedingly	exceedingly	RB
40119	172	29	complex	complex	JJ
40119	172	30	structure	structure	NN
40119	172	31	.	.	.
40119	173	1	Though	though	IN
40119	173	2	its	-PRON-	PRP$
40119	173	3	average	average	JJ
40119	173	4	thickness	thickness	NN
40119	173	5	is	be	VBZ
40119	173	6	less	less	JJR
40119	173	7	than	than	IN
40119	173	8	1/100	1/100	CD
40119	173	9	inch	inch	NN
40119	173	10	it	-PRON-	PRP
40119	173	11	is	be	VBZ
40119	173	12	known	know	VBN
40119	173	13	to	to	TO
40119	173	14	consist	consist	VB
40119	173	15	of	of	IN
40119	173	16	nine	nine	CD
40119	173	17	distinct	distinct	JJ
40119	173	18	layers	layer	NNS
40119	173	19	,	,	,
40119	173	20	most	most	JJS
40119	173	21	of	of	IN
40119	173	22	which	which	WDT
40119	173	23	are	be	VBP
40119	173	24	marvels	marvel	NNS
40119	173	25	of	of	IN
40119	173	26	minute	minute	NN
40119	173	27	intricacy	intricacy	NN
40119	173	28	.	.	.
40119	174	1	Of	of	IN
40119	174	2	these	these	DT
40119	174	3	layers	layer	NNS
40119	174	4	I	-PRON-	PRP
40119	174	5	shall	shall	MD
40119	174	6	notice	notice	VB
40119	174	7	only	only	RB
40119	174	8	two	two	CD
40119	174	9	,	,	,
40119	174	10	the	the	DT
40119	174	11	so	so	RB
40119	174	12	-	-	HYPH
40119	174	13	called	call	VBN
40119	174	14	_	_	NNP
40119	174	15	bacillary	bacillary	JJ
40119	174	16	layer	layer	NN
40119	174	17	_	_	NNP
40119	174	18	,	,	,
40119	174	19	which	which	WDT
40119	174	20	is	be	VBZ
40119	174	21	in	in	IN
40119	174	22	immediate	immediate	JJ
40119	174	23	contact	contact	NN
40119	174	24	with	with	IN
40119	174	25	the	the	DT
40119	174	26	inner	inner	JJ
40119	174	27	coating	coating	NN
40119	174	28	of	of	IN
40119	174	29	the	the	DT
40119	174	30	eye	eye	NN
40119	174	31	-	-	HYPH
40119	174	32	ball	ball	NN
40119	174	33	,	,	,
40119	174	34	and	and	CC
40119	174	35	the	the	DT
40119	174	36	_	_	NNP
40119	174	37	fibrous	fibrous	JJ
40119	174	38	layer	layer	NN
40119	174	39	_	_	NNP
40119	174	40	,	,	,
40119	174	41	or	or	CC
40119	174	42	layer	layer	NN
40119	174	43	of	of	IN
40119	174	44	optic	optic	JJ
40119	174	45	nerve	nerve	NN
40119	174	46	fibres	fibre	NNS
40119	174	47	,	,	,
40119	174	48	which	which	WDT
40119	174	49	is	be	VBZ
40119	174	50	only	only	RB
40119	174	51	separated	separate	VBN
40119	174	52	from	from	IN
40119	174	53	the	the	DT
40119	174	54	vitreous	vitreous	JJ
40119	174	55	body	body	NN
40119	174	56	by	by	IN
40119	174	57	a	a	DT
40119	174	58	thin	thin	JJ
40119	174	59	protective	protective	JJ
40119	174	60	film	film	NN
40119	174	61	.	.	.
40119	175	1	The	the	DT
40119	175	2	bacillary	bacillary	JJ
40119	175	3	layer	layer	NN
40119	175	4	(	(	-LRB-
40119	175	5	from	from	IN
40119	175	6	_	_	NNP
40119	175	7	bacillum	bacillum	NN
40119	175	8	_	_	NNP
40119	175	9	,	,	,
40119	175	10	a	a	DT
40119	175	11	wand	wand	NN
40119	175	12	)	)	-RRB-
40119	175	13	consists	consist	VBZ
40119	175	14	of	of	IN
40119	175	15	a	a	DT
40119	175	16	vast	vast	JJ
40119	175	17	assemblage	assemblage	NN
40119	175	18	of	of	IN
40119	175	19	little	little	JJ
40119	175	20	elongated	elongated	JJ
40119	175	21	bodies	body	NNS
40119	175	22	called	call	VBD
40119	175	23	_	_	NNP
40119	175	24	rods	rod	NNS
40119	175	25	_	_	NNP
40119	175	26	and	and	CC
40119	175	27	_	_	NNP
40119	175	28	cones	cones	NNP
40119	175	29	_	_	NNP
40119	175	30	,	,	,
40119	175	31	which	which	WDT
40119	175	32	are	be	VBP
40119	175	33	placed	place	VBN
40119	175	34	side	side	NN
40119	175	35	by	by	IN
40119	175	36	side	side	NN
40119	175	37	and	and	CC
40119	175	38	set	set	VBD
40119	175	39	perpendicularly	perpendicularly	RB
40119	175	40	to	to	IN
40119	175	41	the	the	DT
40119	175	42	surfaces	surface	NNS
40119	175	43	of	of	IN
40119	175	44	the	the	DT
40119	175	45	retina	retina	NNP
40119	175	46	,	,	,
40119	175	47	or	or	CC
40119	175	48	in	in	IN
40119	175	49	other	other	JJ
40119	175	50	words	word	NNS
40119	175	51	,	,	,
40119	175	52	radially	radially	RB
40119	175	53	to	to	IN
40119	175	54	the	the	DT
40119	175	55	eye	eye	NN
40119	175	56	-	-	HYPH
40119	175	57	ball	ball	NN
40119	175	58	.	.	.
40119	176	1	Let	let	VB
40119	176	2	us	-PRON-	PRP
40119	176	3	try	try	VB
40119	176	4	to	to	TO
40119	176	5	make	make	VB
40119	176	6	the	the	DT
40119	176	7	arrangement	arrangement	NN
40119	176	8	clear	clear	JJ
40119	176	9	by	by	IN
40119	176	10	an	an	DT
40119	176	11	illustration	illustration	NN
40119	176	12	.	.	.
40119	177	1	Imagine	imagine	VB
40119	177	2	a	a	DT
40119	177	3	small	small	JJ
40119	177	4	portion	portion	NN
40119	177	5	of	of	IN
40119	177	6	the	the	DT
40119	177	7	inner	inner	JJ
40119	177	8	surface	surface	NN
40119	177	9	of	of	IN
40119	177	10	the	the	DT
40119	177	11	eye	eye	NN
40119	177	12	-	-	HYPH
40119	177	13	ball	ball	NN
40119	177	14	,	,	,
40119	177	15	one	one	CD
40119	177	16	-	-	HYPH
40119	177	17	tenth	tenth	NN
40119	177	18	of	of	IN
40119	177	19	an	an	DT
40119	177	20	inch	inch	NN
40119	177	21	square	square	NN
40119	177	22	,	,	,
40119	177	23	to	to	TO
40119	177	24	be	be	VB
40119	177	25	magnified	magnify	VBN
40119	177	26	2000	2000	CD
40119	177	27	diameters	diameter	NNS
40119	177	28	(	(	-LRB-
40119	177	29	four	four	CD
40119	177	30	million	million	CD
40119	177	31	times	time	NNS
40119	177	32	)	)	-RRB-
40119	177	33	,	,	,
40119	177	34	and	and	CC
40119	177	35	let	let	VB
40119	177	36	the	the	DT
40119	177	37	enlarged	enlarged	JJ
40119	177	38	area	area	NN
40119	177	39	be	be	VB
40119	177	40	represented	represent	VBN
40119	177	41	by	by	IN
40119	177	42	the	the	DT
40119	177	43	floor	floor	NN
40119	177	44	of	of	IN
40119	177	45	a	a	DT
40119	177	46	room	room	NN
40119	177	47	17	17	CD
40119	177	48	feet	foot	NNS
40119	177	49	square	square	JJ
40119	177	50	.	.	.
40119	178	1	Procure	procure	VB
40119	178	2	a	a	DT
40119	178	3	quantity	quantity	NN
40119	178	4	of	of	IN
40119	178	5	cedar	cedar	NN
40119	178	6	pencils	pencil	NNS
40119	178	7	,	,	,
40119	178	8	and	and	CC
40119	178	9	set	set	VBD
40119	178	10	them	-PRON-	PRP
40119	178	11	on	on	IN
40119	178	12	the	the	DT
40119	178	13	floor	floor	NN
40119	178	14	in	in	IN
40119	178	15	an	an	DT
40119	178	16	upright	upright	JJ
40119	178	17	position	position	NN
40119	178	18	and	and	CC
40119	178	19	very	very	RB
40119	178	20	close	close	RB
40119	178	21	to	to	IN
40119	178	22	one	one	CD
40119	178	23	another	another	DT
40119	178	24	.	.	.
40119	179	1	It	-PRON-	PRP
40119	179	2	will	will	MD
40119	179	3	be	be	VB
40119	179	4	found	find	VBN
40119	179	5	that	that	IN
40119	179	6	the	the	DT
40119	179	7	number	number	NN
40119	179	8	of	of	IN
40119	179	9	pencils	pencil	NNS
40119	179	10	required	require	VBN
40119	179	11	to	to	TO
40119	179	12	fill	fill	VB
40119	179	13	the	the	DT
40119	179	14	space	space	NN
40119	179	15	will	will	MD
40119	179	16	be	be	VB
40119	179	17	about	about	RB
40119	179	18	half	half	PDT
40119	179	19	-	-	HYPH
40119	179	20	a	a	DT
40119	179	21	-	-	HYPH
40119	179	22	million	million	CD
40119	179	23	.	.	.
40119	180	1	To	to	TO
40119	180	2	make	make	VB
40119	180	3	the	the	DT
40119	180	4	analogy	analogy	NN
40119	180	5	more	more	RBR
40119	180	6	complete	complete	JJ
40119	180	7	,	,	,
40119	180	8	let	let	VB
40119	180	9	some	some	DT
40119	180	10	of	of	IN
40119	180	11	the	the	DT
40119	180	12	pencils	pencil	NNS
40119	180	13	be	be	VB
40119	180	14	sharpened	sharpen	VBN
40119	180	15	to	to	IN
40119	180	16	a	a	DT
40119	180	17	long	long	JJ
40119	180	18	tapering	tapering	NN
40119	180	19	point	point	NN
40119	180	20	at	at	IN
40119	180	21	their	-PRON-	PRP$
40119	180	22	lower	low	JJR
40119	180	23	ends	end	NNS
40119	180	24	,	,	,
40119	180	25	the	the	DT
40119	180	26	greater	great	JJR
40119	180	27	number	number	NN
40119	180	28	remaining	remain	VBG
40119	180	29	uncut	uncut	JJ
40119	180	30	,	,	,
40119	180	31	just	just	RB
40119	180	32	as	as	IN
40119	180	33	received	receive	VBN
40119	180	34	from	from	IN
40119	180	35	the	the	DT
40119	180	36	manufacturers	manufacturer	NNS
40119	180	37	.	.	.
40119	181	1	Neglecting	neglecting	JJ
40119	181	2	details	detail	NNS
40119	181	3	which	which	WDT
40119	181	4	are	be	VBP
40119	181	5	immaterial	immaterial	JJ
40119	181	6	for	for	IN
40119	181	7	our	-PRON-	PRP$
40119	181	8	present	present	JJ
40119	181	9	purpose	purpose	NN
40119	181	10	,	,	,
40119	181	11	we	-PRON-	PRP
40119	181	12	may	may	MD
40119	181	13	regard	regard	VB
40119	181	14	the	the	DT
40119	181	15	uncut	uncut	JJ
40119	181	16	pencils	pencil	NNS
40119	181	17	as	as	IN
40119	181	18	representing	represent	VBG
40119	181	19	upon	upon	IN
40119	181	20	an	an	DT
40119	181	21	enormously	enormously	RB
40119	181	22	magnified	magnify	VBN
40119	181	23	scale	scale	NN
40119	181	24	the	the	DT
40119	181	25	rods	rod	NNS
40119	181	26	of	of	IN
40119	181	27	the	the	DT
40119	181	28	retina	retina	NNP
40119	181	29	,	,	,
40119	181	30	and	and	CC
40119	181	31	the	the	DT
40119	181	32	pointed	pointed	JJ
40119	181	33	ones	one	NNS
40119	181	34	the	the	DT
40119	181	35	cones	cone	NNS
40119	181	36	.	.	.
40119	182	1	The	the	DT
40119	182	2	flat	flat	JJ
40119	182	3	upper	upper	JJ
40119	182	4	ends	end	NNS
40119	182	5	of	of	IN
40119	182	6	the	the	DT
40119	182	7	pencils	pencil	NNS
40119	182	8	may	may	MD
40119	182	9	be	be	VB
40119	182	10	painted	paint	VBN
40119	182	11	in	in	IN
40119	182	12	different	different	JJ
40119	182	13	uniform	uniform	JJ
40119	182	14	colours	colour	NNS
40119	182	15	,	,	,
40119	182	16	and	and	CC
40119	182	17	arranged	arrange	VBD
40119	182	18	so	so	IN
40119	182	19	as	as	IN
40119	182	20	to	to	TO
40119	182	21	form	form	VB
40119	182	22	a	a	DT
40119	182	23	large	large	JJ
40119	182	24	picture	picture	NN
40119	182	25	in	in	IN
40119	182	26	mosaic	mosaic	NNP
40119	182	27	,	,	,
40119	182	28	and	and	CC
40119	182	29	if	if	IN
40119	182	30	this	this	DT
40119	182	31	is	be	VBZ
40119	182	32	looked	look	VBN
40119	182	33	at	at	IN
40119	182	34	from	from	IN
40119	182	35	such	such	PDT
40119	182	36	a	a	DT
40119	182	37	distance	distance	NN
40119	182	38	that	that	IN
40119	182	39	its	-PRON-	PRP$
40119	182	40	image	image	NN
40119	182	41	on	on	IN
40119	182	42	the	the	DT
40119	182	43	retina	retina	NNP
40119	182	44	is	be	VBZ
40119	182	45	a	a	DT
40119	182	46	tenth	tenth	NN
40119	182	47	of	of	IN
40119	182	48	an	an	DT
40119	182	49	inch	inch	NN
40119	182	50	square	square	NN
40119	182	51	(	(	-LRB-
40119	182	52	which	which	WDT
40119	182	53	will	will	MD
40119	182	54	be	be	VB
40119	182	55	the	the	DT
40119	182	56	case	case	NN
40119	182	57	when	when	WRB
40119	182	58	the	the	DT
40119	182	59	picture	picture	NN
40119	182	60	is	be	VBZ
40119	182	61	about	about	RB
40119	182	62	forty	forty	CD
40119	182	63	yards	yard	NNS
40119	182	64	away	away	RB
40119	182	65	)	)	-RRB-
40119	182	66	all	all	DT
40119	182	67	possibility	possibility	NN
40119	182	68	of	of	IN
40119	182	69	distinguishing	distinguish	VBG
40119	182	70	the	the	DT
40119	182	71	separate	separate	JJ
40119	182	72	elements	element	NNS
40119	182	73	which	which	WDT
40119	182	74	compose	compose	VBP
40119	182	75	it	-PRON-	PRP
40119	182	76	will	will	MD
40119	182	77	be	be	VB
40119	182	78	lost	lose	VBN
40119	182	79	,	,	,
40119	182	80	and	and	CC
40119	182	81	the	the	DT
40119	182	82	picture	picture	NN
40119	182	83	will	will	MD
40119	182	84	seem	seem	VB
40119	182	85	to	to	TO
40119	182	86	be	be	VB
40119	182	87	a	a	DT
40119	182	88	perfectly	perfectly	RB
40119	182	89	continuous	continuous	JJ
40119	182	90	one	one	CD
40119	182	91	.	.	.
40119	183	1	Although	although	IN
40119	183	2	the	the	DT
40119	183	3	light	light	NN
40119	183	4	which	which	WDT
40119	183	5	enters	enter	VBZ
40119	183	6	the	the	DT
40119	183	7	eye	eye	NN
40119	183	8	can	can	MD
40119	183	9	not	not	RB
40119	183	10	reach	reach	VB
40119	183	11	the	the	DT
40119	183	12	rods	rod	NNS
40119	183	13	and	and	CC
40119	183	14	cones	cone	NNS
40119	183	15	until	until	IN
40119	183	16	it	-PRON-	PRP
40119	183	17	has	have	VBZ
40119	183	18	traversed	traverse	VBN
40119	183	19	all	all	PDT
40119	183	20	the	the	DT
40119	183	21	other	other	JJ
40119	183	22	layers	layer	NNS
40119	183	23	of	of	IN
40119	183	24	the	the	DT
40119	183	25	retina	retina	NNP
40119	183	26	,	,	,
40119	183	27	yet	yet	CC
40119	183	28	these	these	DT
40119	183	29	intervening	intervene	VBG
40119	183	30	layers	layer	NNS
40119	183	31	,	,	,
40119	183	32	being	be	VBG
40119	183	33	transparent	transparent	JJ
40119	183	34	,	,	,
40119	183	35	offer	offer	VBP
40119	183	36	little	little	JJ
40119	183	37	obstruction	obstruction	NN
40119	183	38	to	to	IN
40119	183	39	its	-PRON-	PRP$
40119	183	40	passage	passage	NN
40119	183	41	,	,	,
40119	183	42	and	and	CC
40119	183	43	it	-PRON-	PRP
40119	183	44	can	can	MD
40119	183	45	hardly	hardly	RB
40119	183	46	be	be	VB
40119	183	47	doubted	doubt	VBN
40119	183	48	that	that	IN
40119	183	49	the	the	DT
40119	183	50	rods	rod	NNS
40119	183	51	and	and	CC
40119	183	52	cones	cone	NNS
40119	183	53	are	be	VBP
40119	183	54	the	the	DT
40119	183	55	special	special	JJ
40119	183	56	organs	organ	NNS
40119	183	57	upon	upon	IN
40119	183	58	which	which	WDT
40119	183	59	light	light	NN
40119	183	60	exerts	exert	VBZ
40119	183	61	its	-PRON-	PRP$
40119	183	62	action	action	NN
40119	183	63	,	,	,
40119	183	64	the	the	DT
40119	183	65	picture	picture	NN
40119	183	66	focussed	focusse	VBN
40119	183	67	upon	upon	IN
40119	183	68	their	-PRON-	PRP$
40119	183	69	ends	end	NNS
40119	183	70	being	be	VBG
40119	183	71	in	in	IN
40119	183	72	truth	truth	NN
40119	183	73	an	an	DT
40119	183	74	exceedingly	exceedingly	JJ
40119	183	75	fine	fine	JJ
40119	183	76	mosaic	mosaic	NNP
40119	183	77	.	.	.
40119	184	1	From	from	IN
40119	184	2	every	every	DT
40119	184	3	separate	separate	JJ
40119	184	4	element	element	NN
40119	184	5	of	of	IN
40119	184	6	the	the	DT
40119	184	7	mosaic	mosaic	JJ
40119	184	8	--	--	:
40119	184	9	from	from	IN
40119	184	10	every	every	DT
40119	184	11	single	single	JJ
40119	184	12	rod	rod	NN
40119	184	13	and	and	CC
40119	184	14	cone	cone	NN
40119	184	15	--	--	:
40119	184	16	there	there	EX
40119	184	17	proceeds	proceed	VBZ
40119	184	18	a	a	DT
40119	184	19	slender	slend	JJR
40119	184	20	transparent	transparent	JJ
40119	184	21	filament	filament	NN
40119	184	22	:	:	:
40119	184	23	all	all	PDT
40119	184	24	these	these	DT
40119	184	25	make	make	VBP
40119	184	26	their	-PRON-	PRP$
40119	184	27	way	way	NN
40119	184	28	through	through	IN
40119	184	29	the	the	DT
40119	184	30	intermediate	intermediate	JJ
40119	184	31	layers	layer	NNS
40119	184	32	of	of	IN
40119	184	33	the	the	DT
40119	184	34	retina	retina	NNP
40119	184	35	,	,	,
40119	184	36	without	without	IN
40119	184	37	,	,	,
40119	184	38	as	as	IN
40119	184	39	is	be	VBZ
40119	184	40	believed	believe	VBN
40119	184	41	,	,	,
40119	184	42	any	any	DT
40119	184	43	break	break	NN
40119	184	44	of	of	IN
40119	184	45	functional	functional	JJ
40119	184	46	continuity	continuity	NN
40119	184	47	,	,	,
40119	184	48	and	and	CC
40119	184	49	emerge	emerge	VB
40119	184	50	near	near	IN
40119	184	51	its	-PRON-	PRP$
40119	184	52	internal	internal	JJ
40119	184	53	surface	surface	NN
40119	184	54	;	;	:
40119	184	55	here	here	RB
40119	184	56	they	-PRON-	PRP
40119	184	57	bend	bend	VBP
40119	184	58	over	over	RP
40119	184	59	at	at	IN
40119	184	60	right	right	JJ
40119	184	61	angles	angle	NNS
40119	184	62	,	,	,
40119	184	63	and	and	CC
40119	184	64	the	the	DT
40119	184	65	thousands	thousand	NNS
40119	184	66	of	of	IN
40119	184	67	filaments	filament	NNS
40119	184	68	form	form	VBP
40119	184	69	a	a	DT
40119	184	70	tangle	tangle	NN
40119	184	71	which	which	WDT
40119	184	72	lines	line	VBZ
40119	184	73	the	the	DT
40119	184	74	inside	inside	NN
40119	184	75	of	of	IN
40119	184	76	the	the	DT
40119	184	77	eye	eye	NN
40119	184	78	like	like	IN
40119	184	79	a	a	DT
40119	184	80	fine	fine	JJ
40119	184	81	network	network	NN
40119	184	82	,	,	,
40119	184	83	and	and	CC
40119	184	84	constitute	constitute	VB
40119	184	85	the	the	DT
40119	184	86	layer	layer	NN
40119	184	87	of	of	IN
40119	184	88	optic	optic	JJ
40119	184	89	nerve	nerve	NN
40119	184	90	-	-	HYPH
40119	184	91	fibres	fibre	NNS
40119	184	92	already	already	RB
40119	184	93	referred	refer	VBD
40119	184	94	to	to	IN
40119	184	95	.	.	.
40119	185	1	The	the	DT
40119	185	2	filaments	filament	NNS
40119	185	3	,	,	,
40119	185	4	or	or	CC
40119	185	5	nerve	nerve	NN
40119	185	6	-	-	HYPH
40119	185	7	fibres	fibre	NNS
40119	185	8	,	,	,
40119	185	9	do	do	VBP
40119	185	10	not	not	RB
40119	185	11	however	however	RB
40119	185	12	terminate	terminate	VB
40119	185	13	within	within	IN
40119	185	14	the	the	DT
40119	185	15	eye	eye	NN
40119	185	16	;	;	:
40119	185	17	they	-PRON-	PRP
40119	185	18	all	all	DT
40119	185	19	pass	pass	VBP
40119	185	20	through	through	IN
40119	185	21	the	the	DT
40119	185	22	hole	hole	NN
40119	185	23	marked	mark	VBN
40119	185	24	N	n	NN
40119	185	25	in	in	IN
40119	185	26	the	the	DT
40119	185	27	figure	figure	NN
40119	185	28	,	,	,
40119	185	29	and	and	CC
40119	185	30	thence	thence	NN
40119	185	31	,	,	,
40119	185	32	in	in	IN
40119	185	33	the	the	DT
40119	185	34	form	form	NN
40119	185	35	of	of	IN
40119	185	36	a	a	DT
40119	185	37	many	many	JJ
40119	185	38	-	-	HYPH
40119	185	39	stranded	strand	VBN
40119	185	40	cable	cable	NN
40119	185	41	,	,	,
40119	185	42	constituting	constitute	VBG
40119	185	43	the	the	DT
40119	185	44	_	_	NNP
40119	185	45	optic	optic	JJ
40119	185	46	nerve	nerve	NN
40119	185	47	_	_	NNP
40119	185	48	,	,	,
40119	185	49	they	-PRON-	PRP
40119	185	50	are	be	VBP
40119	185	51	led	lead	VBN
40119	185	52	to	to	IN
40119	185	53	the	the	DT
40119	185	54	brain	brain	NN
40119	185	55	,	,	,
40119	185	56	to	to	TO
40119	185	57	which	which	WDT
40119	185	58	each	each	DT
40119	185	59	individual	individual	JJ
40119	185	60	fibre	fibre	NN
40119	185	61	is	be	VBZ
40119	185	62	separately	separately	RB
40119	185	63	attached	attach	VBN
40119	185	64	.	.	.
40119	186	1	If	if	IN
40119	186	2	,	,	,
40119	186	3	therefore	therefore	RB
40119	186	4	,	,	,
40119	186	5	what	what	WP
40119	186	6	I	-PRON-	PRP
40119	186	7	have	have	VBP
40119	186	8	said	say	VBN
40119	186	9	is	be	VBZ
40119	186	10	true	true	JJ
40119	186	11	--	--	:
40119	186	12	and	and	CC
40119	186	13	,	,	,
40119	186	14	though	though	IN
40119	186	15	it	-PRON-	PRP
40119	186	16	has	have	VBZ
40119	186	17	not	not	RB
40119	186	18	,	,	,
40119	186	19	I	-PRON-	PRP
40119	186	20	believe	believe	VBP
40119	186	21	,	,	,
40119	186	22	been	be	VBN
40119	186	23	all	all	DT
40119	186	24	rigorously	rigorously	RB
40119	186	25	proved	prove	VBN
40119	186	26	,	,	,
40119	186	27	yet	yet	CC
40119	186	28	the	the	DT
40119	186	29	evidence	evidence	NN
40119	186	30	in	in	IN
40119	186	31	its	-PRON-	PRP$
40119	186	32	support	support	NN
40119	186	33	is	be	VBZ
40119	186	34	exceedingly	exceedingly	RB
40119	186	35	cogent	cogent	JJ
40119	186	36	--	--	:
40119	186	37	it	-PRON-	PRP
40119	186	38	follows	follow	VBZ
40119	186	39	that	that	IN
40119	186	40	every	every	DT
40119	186	41	one	one	CD
40119	186	42	of	of	IN
40119	186	43	the	the	DT
40119	186	44	multitude	multitude	NN
40119	186	45	of	of	IN
40119	186	46	rods	rod	NNS
40119	186	47	and	and	CC
40119	186	48	cones	cone	NNS
40119	186	49	has	have	VBZ
40119	186	50	its	-PRON-	PRP$
40119	186	51	own	own	JJ
40119	186	52	independent	independent	JJ
40119	186	53	line	line	NN
40119	186	54	of	of	IN
40119	186	55	communication	communication	NN
40119	186	56	with	with	IN
40119	186	57	the	the	DT
40119	186	58	brain	brain	NN
40119	186	59	.	.	.
40119	187	1	The	the	DT
40119	187	2	mind	mind	NN
40119	187	3	,	,	,
40119	187	4	which	which	WDT
40119	187	5	is	be	VBZ
40119	187	6	mysteriously	mysteriously	RB
40119	187	7	connected	connect	VBN
40119	187	8	with	with	IN
40119	187	9	the	the	DT
40119	187	10	brain	brain	NN
40119	187	11	,	,	,
40119	187	12	is	be	VBZ
40119	187	13	thus	thus	RB
40119	187	14	afforded	afford	VBN
40119	187	15	the	the	DT
40119	187	16	means	mean	NNS
40119	187	17	of	of	IN
40119	187	18	localising	localise	VBG
40119	187	19	all	all	PDT
40119	187	20	the	the	DT
40119	187	21	points	point	NNS
40119	187	22	of	of	IN
40119	187	23	luminous	luminous	JJ
40119	187	24	excitation	excitation	NN
40119	187	25	relatively	relatively	RB
40119	187	26	to	to	IN
40119	187	27	one	one	CD
40119	187	28	another	another	DT
40119	187	29	,	,	,
40119	187	30	and	and	CC
40119	187	31	furnished	furnish	VBN
40119	187	32	with	with	IN
40119	187	33	data	datum	NNS
40119	187	34	for	for	IN
40119	187	35	estimating	estimate	VBG
40119	187	36	the	the	DT
40119	187	37	form	form	NN
40119	187	38	of	of	IN
40119	187	39	the	the	DT
40119	187	40	object	object	NN
40119	187	41	from	from	IN
40119	187	42	which	which	WDT
40119	187	43	the	the	DT
40119	187	44	light	light	NN
40119	187	45	proceeds	proceed	VBZ
40119	187	46	.	.	.
40119	188	1	There	there	EX
40119	188	2	are	be	VBP
40119	188	3	two	two	CD
40119	188	4	small	small	JJ
40119	188	5	regions	region	NNS
40119	188	6	of	of	IN
40119	188	7	the	the	DT
40119	188	8	retina	retina	NNP
40119	188	9	which	which	WDT
40119	188	10	are	be	VBP
40119	188	11	of	of	IN
40119	188	12	special	special	JJ
40119	188	13	interest	interest	NN
40119	188	14	.	.	.
40119	189	1	One	one	CD
40119	189	2	of	of	IN
40119	189	3	them	-PRON-	PRP
40119	189	4	lies	lie	VBZ
40119	189	5	just	just	RB
40119	189	6	over	over	IN
40119	189	7	the	the	DT
40119	189	8	opening	opening	NN
40119	189	9	N	n	CD
40119	189	10	where	where	WRB
40119	189	11	the	the	DT
40119	189	12	optic	optic	JJ
40119	189	13	nerve	nerve	NN
40119	189	14	enters	enter	VBZ
40119	189	15	.	.	.
40119	190	1	Here	here	RB
40119	190	2	it	-PRON-	PRP
40119	190	3	is	be	VBZ
40119	190	4	evident	evident	JJ
40119	190	5	that	that	IN
40119	190	6	there	there	EX
40119	190	7	can	can	MD
40119	190	8	be	be	VB
40119	190	9	no	no	DT
40119	190	10	rods	rod	NNS
40119	190	11	and	and	CC
40119	190	12	cones	cone	NNS
40119	190	13	,	,	,
40119	190	14	their	-PRON-	PRP$
40119	190	15	place	place	NN
40119	190	16	being	be	VBG
40119	190	17	wholly	wholly	RB
40119	190	18	occupied	occupy	VBN
40119	190	19	by	by	IN
40119	190	20	strands	strand	NNS
40119	190	21	of	of	IN
40119	190	22	nerve	nerve	NN
40119	190	23	-	-	HYPH
40119	190	24	fibre	fibre	NN
40119	190	25	.	.	.
40119	191	1	Now	now	RB
40119	191	2	it	-PRON-	PRP
40119	191	3	is	be	VBZ
40119	191	4	remarkable	remarkable	JJ
40119	191	5	that	that	IN
40119	191	6	this	this	DT
40119	191	7	spot	spot	NN
40119	191	8	is	be	VBZ
40119	191	9	totally	totally	RB
40119	191	10	insensitive	insensitive	JJ
40119	191	11	to	to	IN
40119	191	12	light	light	NN
40119	191	13	.	.	.
40119	192	1	The	the	DT
40119	192	2	other	other	JJ
40119	192	3	interesting	interesting	JJ
40119	192	4	portion	portion	NN
40119	192	5	is	be	VBZ
40119	192	6	situated	situate	VBN
40119	192	7	opposite	opposite	IN
40119	192	8	the	the	DT
40119	192	9	middle	middle	NN
40119	192	10	of	of	IN
40119	192	11	the	the	DT
40119	192	12	front	front	JJ
40119	192	13	opening	opening	NN
40119	192	14	,	,	,
40119	192	15	and	and	CC
40119	192	16	is	be	VBZ
40119	192	17	marked	mark	VBN
40119	192	18	by	by	IN
40119	192	19	a	a	DT
40119	192	20	small	small	JJ
40119	192	21	yellow	yellow	JJ
40119	192	22	patch	patch	NN
40119	192	23	,	,	,
40119	192	24	in	in	IN
40119	192	25	the	the	DT
40119	192	26	centre	centre	NN
40119	192	27	of	of	IN
40119	192	28	which	which	WDT
40119	192	29	is	be	VBZ
40119	192	30	a	a	DT
40119	192	31	depression	depression	NN
40119	192	32	or	or	CC
40119	192	33	pit	pit	NN
40119	192	34	,	,	,
40119	192	35	which	which	WDT
40119	192	36	is	be	VBZ
40119	192	37	shown	show	VBN
40119	192	38	in	in	IN
40119	192	39	an	an	DT
40119	192	40	exaggerated	exaggerated	JJ
40119	192	41	form	form	NN
40119	192	42	at	at	IN
40119	192	43	F	F	NNP
40119	192	44	,	,	,
40119	192	45	and	and	CC
40119	192	46	is	be	VBZ
40119	192	47	called	call	VBN
40119	192	48	the	the	DT
40119	192	49	_	_	NNP
40119	192	50	fovea	fovea	NN
40119	192	51	_	_	NNP
40119	192	52	.	.	.
40119	193	1	It	-PRON-	PRP
40119	193	2	has	have	VBZ
40119	193	3	been	be	VBN
40119	193	4	ascertained	ascertain	VBN
40119	193	5	that	that	IN
40119	193	6	the	the	DT
40119	193	7	depression	depression	NN
40119	193	8	is	be	VBZ
40119	193	9	due	due	JJ
40119	193	10	partly	partly	RB
40119	193	11	to	to	IN
40119	193	12	the	the	DT
40119	193	13	absence	absence	NN
40119	193	14	of	of	IN
40119	193	15	the	the	DT
40119	193	16	layer	layer	NN
40119	193	17	of	of	IN
40119	193	18	nerve	nerve	NN
40119	193	19	-	-	HYPH
40119	193	20	fibres	fibre	NNS
40119	193	21	,	,	,
40119	193	22	which	which	WDT
40119	193	23	are	be	VBP
40119	193	24	here	here	RB
40119	193	25	bent	bent	JJ
40119	193	26	aside	aside	RB
40119	193	27	out	out	IN
40119	193	28	of	of	IN
40119	193	29	their	-PRON-	PRP$
40119	193	30	natural	natural	JJ
40119	193	31	course	course	NN
40119	193	32	,	,	,
40119	193	33	and	and	CC
40119	193	34	partly	partly	RB
40119	193	35	to	to	IN
40119	193	36	a	a	DT
40119	193	37	local	local	JJ
40119	193	38	reduction	reduction	NN
40119	193	39	in	in	IN
40119	193	40	the	the	DT
40119	193	41	thickness	thickness	NN
40119	193	42	of	of	IN
40119	193	43	some	some	DT
40119	193	44	of	of	IN
40119	193	45	the	the	DT
40119	193	46	intermediate	intermediate	JJ
40119	193	47	retinal	retinal	JJ
40119	193	48	layers	layer	NNS
40119	193	49	.	.	.
40119	194	1	This	this	DT
40119	194	2	spot	spot	NN
40119	194	3	,	,	,
40119	194	4	being	be	VBG
40119	194	5	at	at	IN
40119	194	6	the	the	DT
40119	194	7	centre	centre	NN
40119	194	8	of	of	IN
40119	194	9	the	the	DT
40119	194	10	field	field	NN
40119	194	11	of	of	IN
40119	194	12	vision	vision	NN
40119	194	13	,	,	,
40119	194	14	occupies	occupy	VBZ
40119	194	15	a	a	DT
40119	194	16	position	position	NN
40119	194	17	of	of	IN
40119	194	18	great	great	JJ
40119	194	19	importance	importance	NN
40119	194	20	,	,	,
40119	194	21	and	and	CC
40119	194	22	the	the	DT
40119	194	23	evident	evident	JJ
40119	194	24	purpose	purpose	NN
40119	194	25	of	of	IN
40119	194	26	the	the	DT
40119	194	27	superficial	superficial	JJ
40119	194	28	depression	depression	NN
40119	194	29	is	be	VBZ
40119	194	30	to	to	TO
40119	194	31	allow	allow	VB
40119	194	32	the	the	DT
40119	194	33	light	light	NN
40119	194	34	to	to	TO
40119	194	35	reach	reach	VB
40119	194	36	the	the	DT
40119	194	37	underlying	underlie	VBG
40119	194	38	bacillary	bacillary	JJ
40119	194	39	layer	layer	NN
40119	194	40	with	with	IN
40119	194	41	as	as	RB
40119	194	42	little	little	JJ
40119	194	43	obstruction	obstruction	NN
40119	194	44	as	as	IN
40119	194	45	possible	possible	JJ
40119	194	46	.	.	.
40119	195	1	It	-PRON-	PRP
40119	195	2	is	be	VBZ
40119	195	3	noteworthy	noteworthy	JJ
40119	195	4	that	that	IN
40119	195	5	the	the	DT
40119	195	6	bacillary	bacillary	JJ
40119	195	7	layer	layer	NN
40119	195	8	beneath	beneath	IN
40119	195	9	the	the	DT
40119	195	10	yellow	yellow	JJ
40119	195	11	spot	spot	NN
40119	195	12	is	be	VBZ
40119	195	13	composed	compose	VBN
40119	195	14	entirely	entirely	RB
40119	195	15	of	of	IN
40119	195	16	cones	cone	NNS
40119	195	17	,	,	,
40119	195	18	the	the	DT
40119	195	19	rods	rod	NNS
40119	195	20	,	,	,
40119	195	21	which	which	WDT
40119	195	22	elsewhere	elsewhere	RB
40119	195	23	are	be	VBP
40119	195	24	in	in	IN
40119	195	25	excess	excess	NN
40119	195	26	,	,	,
40119	195	27	being	be	VBG
40119	195	28	altogether	altogether	RB
40119	195	29	wanting	want	VBG
40119	195	30	.	.	.
40119	196	1	The	the	DT
40119	196	2	only	only	JJ
40119	196	3	other	other	JJ
40119	196	4	accessory	accessory	NN
40119	196	5	of	of	IN
40119	196	6	the	the	DT
40119	196	7	visual	visual	JJ
40119	196	8	apparatus	apparatus	NN
40119	196	9	to	to	TO
40119	196	10	which	which	WDT
40119	196	11	I	-PRON-	PRP
40119	196	12	shall	shall	MD
40119	196	13	refer	refer	VB
40119	196	14	is	be	VBZ
40119	196	15	the	the	DT
40119	196	16	_	_	NNP
40119	196	17	iris	iris	NNP
40119	196	18	_	_	NNP
40119	196	19	(	(	-LRB-
40119	196	20	I	-PRON-	PRP
40119	196	21	I	i	NN
40119	196	22	,	,	,
40119	196	23	Fig	Fig	NNP
40119	196	24	.	.	.
40119	197	1	2	2	LS
40119	197	2	)	)	-RRB-
40119	197	3	,	,	,
40119	197	4	a	a	DT
40119	197	5	coloured	coloured	JJ
40119	197	6	disk	disk	NN
40119	197	7	having	have	VBG
40119	197	8	a	a	DT
40119	197	9	central	central	JJ
40119	197	10	perforation	perforation	NN
40119	197	11	.	.	.
40119	198	1	This	this	DT
40119	198	2	can	can	MD
40119	198	3	be	be	VB
40119	198	4	seen	see	VBN
40119	198	5	through	through	IN
40119	198	6	the	the	DT
40119	198	7	cornea	cornea	NN
40119	198	8	and	and	CC
40119	198	9	is	be	VBZ
40119	198	10	consequently	consequently	RB
40119	198	11	a	a	DT
40119	198	12	very	very	RB
40119	198	13	familiar	familiar	JJ
40119	198	14	object	object	NN
40119	198	15	.	.	.
40119	199	1	The	the	DT
40119	199	2	iris	iris	NN
40119	199	3	serves	serve	VBZ
40119	199	4	the	the	DT
40119	199	5	same	same	JJ
40119	199	6	purpose	purpose	NN
40119	199	7	as	as	IN
40119	199	8	the	the	DT
40119	199	9	stop	stop	NN
40119	199	10	,	,	,
40119	199	11	or	or	CC
40119	199	12	diaphragm	diaphragm	JJ
40119	199	13	,	,	,
40119	199	14	of	of	IN
40119	199	15	a	a	DT
40119	199	16	photographic	photographic	JJ
40119	199	17	lens	lens	NN
40119	199	18	,	,	,
40119	199	19	its	-PRON-	PRP$
40119	199	20	function	function	NN
40119	199	21	being	be	VBG
40119	199	22	to	to	TO
40119	199	23	limit	limit	VB
40119	199	24	and	and	CC
40119	199	25	regulate	regulate	VB
40119	199	26	the	the	DT
40119	199	27	quantity	quantity	NN
40119	199	28	of	of	IN
40119	199	29	light	light	NN
40119	199	30	which	which	WDT
40119	199	31	is	be	VBZ
40119	199	32	admitted	admit	VBN
40119	199	33	into	into	IN
40119	199	34	the	the	DT
40119	199	35	eye	eye	NN
40119	199	36	.	.	.
40119	200	1	The	the	DT
40119	200	2	size	size	NN
40119	200	3	of	of	IN
40119	200	4	the	the	DT
40119	200	5	central	central	JJ
40119	200	6	opening	opening	NN
40119	200	7	,	,	,
40119	200	8	or	or	CC
40119	200	9	_	_	NNP
40119	200	10	pupil	pupil	NN
40119	200	11	_	_	NNP
40119	200	12	,	,	,
40119	200	13	varies	vary	VBZ
40119	200	14	automatically	automatically	RB
40119	200	15	with	with	IN
40119	200	16	the	the	DT
40119	200	17	intensity	intensity	NN
40119	200	18	of	of	IN
40119	200	19	the	the	DT
40119	200	20	illumination	illumination	NN
40119	200	21	:	:	:
40119	200	22	in	in	IN
40119	200	23	a	a	DT
40119	200	24	strong	strong	JJ
40119	200	25	light	light	NN
40119	200	26	the	the	DT
40119	200	27	opening	opening	NN
40119	200	28	becomes	become	VBZ
40119	200	29	small	small	JJ
40119	200	30	;	;	:
40119	200	31	in	in	IN
40119	200	32	a	a	DT
40119	200	33	feeble	feeble	JJ
40119	200	34	light	light	NN
40119	200	35	or	or	CC
40119	200	36	in	in	IN
40119	200	37	darkness	darkness	NN
40119	200	38	it	-PRON-	PRP
40119	200	39	is	be	VBZ
40119	200	40	enlarged	enlarge	VBN
40119	200	41	.	.	.
40119	201	1	The	the	DT
40119	201	2	pupil	pupil	NN
40119	201	3	also	also	RB
40119	201	4	contracts	contract	VBZ
40119	201	5	when	when	WRB
40119	201	6	the	the	DT
40119	201	7	eye	eye	NN
40119	201	8	is	be	VBZ
40119	201	9	focussed	focusse	VBN
40119	201	10	upon	upon	IN
40119	201	11	a	a	DT
40119	201	12	near	near	JJ
40119	201	13	object	object	NN
40119	201	14	and	and	CC
40119	201	15	dilates	dilate	VBZ
40119	201	16	when	when	WRB
40119	201	17	the	the	DT
40119	201	18	vision	vision	NN
40119	201	19	is	be	VBZ
40119	201	20	directed	direct	VBN
40119	201	21	to	to	IN
40119	201	22	a	a	DT
40119	201	23	distance	distance	NN
40119	201	24	.	.	.
40119	202	1	This	this	DT
40119	202	2	brief	brief	JJ
40119	202	3	sketch	sketch	NN
40119	202	4	may	may	MD
40119	202	5	serve	serve	VB
40119	202	6	to	to	TO
40119	202	7	give	give	VB
40119	202	8	some	some	DT
40119	202	9	slight	slight	JJ
40119	202	10	idea	idea	NN
40119	202	11	of	of	IN
40119	202	12	the	the	DT
40119	202	13	complexity	complexity	NN
40119	202	14	and	and	CC
40119	202	15	delicacy	delicacy	NN
40119	202	16	of	of	IN
40119	202	17	the	the	DT
40119	202	18	visual	visual	JJ
40119	202	19	apparatus	apparatus	NN
40119	202	20	.	.	.
40119	203	1	Only	only	RB
40119	203	2	a	a	DT
40119	203	3	few	few	JJ
40119	203	4	of	of	IN
40119	203	5	its	-PRON-	PRP$
40119	203	6	more	more	JJR
40119	203	7	salient	salient	NN
40119	203	8	features	feature	NNS
40119	203	9	have	have	VBP
40119	203	10	been	be	VBN
40119	203	11	touched	touch	VBN
40119	203	12	upon	upon	IN
40119	203	13	;	;	:
40119	203	14	when	when	WRB
40119	203	15	our	-PRON-	PRP$
40119	203	16	scrutiny	scrutiny	NN
40119	203	17	is	be	VBZ
40119	203	18	carried	carry	VBN
40119	203	19	into	into	IN
40119	203	20	details	detail	NNS
40119	203	21	the	the	DT
40119	203	22	complexity	complexity	NN
40119	203	23	becomes	become	VBZ
40119	203	24	bewildering	bewilder	VBG
40119	203	25	.	.	.
40119	204	1	Even	even	RB
40119	204	2	such	such	JJ
40119	204	3	simple	simple	JJ
40119	204	4	-	-	HYPH
40119	204	5	looking	look	VBG
40119	204	6	things	thing	NNS
40119	204	7	as	as	IN
40119	204	8	the	the	DT
40119	204	9	cornea	cornea	NN
40119	204	10	and	and	CC
40119	204	11	the	the	DT
40119	204	12	vitreous	vitreous	JJ
40119	204	13	body	body	NN
40119	204	14	turn	turn	VB
40119	204	15	out	out	RP
40119	204	16	on	on	IN
40119	204	17	close	close	JJ
40119	204	18	examination	examination	NN
40119	204	19	to	to	TO
40119	204	20	be	be	VB
40119	204	21	most	most	RBS
40119	204	22	elaborately	elaborately	RB
40119	204	23	constituted	constituted	JJ
40119	204	24	.	.	.
40119	205	1	Much	much	JJ
40119	205	2	,	,	,
40119	205	3	no	no	RB
40119	205	4	doubt	doubt	RB
40119	205	5	,	,	,
40119	205	6	remains	remain	VBZ
40119	205	7	to	to	TO
40119	205	8	be	be	VB
40119	205	9	discovered	discover	VBN
40119	205	10	,	,	,
40119	205	11	and	and	CC
40119	205	12	of	of	IN
40119	205	13	what	what	WP
40119	205	14	has	have	VBZ
40119	205	15	already	already	RB
40119	205	16	been	be	VBN
40119	205	17	investigated	investigate	VBN
40119	205	18	much	much	JJ
40119	205	19	is	be	VBZ
40119	205	20	at	at	IN
40119	205	21	present	present	JJ
40119	205	22	only	only	RB
40119	205	23	partially	partially	RB
40119	205	24	understood	understand	VBN
40119	205	25	.	.	.
40119	206	1	And	and	CC
40119	206	2	yet	yet	RB
40119	206	3	,	,	,
40119	206	4	though	though	IN
40119	206	5	it	-PRON-	PRP
40119	206	6	is	be	VBZ
40119	206	7	true	true	JJ
40119	206	8	that	that	IN
40119	206	9	man	man	NN
40119	206	10	is	be	VBZ
40119	206	11	"	"	``
40119	206	12	fearfully	fearfully	RB
40119	206	13	and	and	CC
40119	206	14	wonderfully	wonderfully	RB
40119	206	15	made	make	VBN
40119	206	16	,	,	,
40119	206	17	"	"	''
40119	206	18	it	-PRON-	PRP
40119	206	19	is	be	VBZ
40119	206	20	equally	equally	RB
40119	206	21	true	true	JJ
40119	206	22	that	that	IN
40119	206	23	he	-PRON-	PRP
40119	206	24	is	be	VBZ
40119	206	25	far	far	RB
40119	206	26	from	from	IN
40119	206	27	perfect	perfect	JJ
40119	206	28	;	;	:
40119	206	29	and	and	CC
40119	206	30	while	while	IN
40119	206	31	there	there	EX
40119	206	32	is	be	VBZ
40119	206	33	no	no	DT
40119	206	34	structure	structure	NN
40119	206	35	in	in	IN
40119	206	36	the	the	DT
40119	206	37	whole	whole	JJ
40119	206	38	human	human	JJ
40119	206	39	anatomy	anatomy	NN
40119	206	40	which	which	WDT
40119	206	41	exhibits	exhibit	VBZ
40119	206	42	so	so	RB
40119	206	43	abundant	abundant	JJ
40119	206	44	a	a	DT
40119	206	45	profusion	profusion	NN
40119	206	46	of	of	IN
40119	206	47	marvels	marvel	NNS
40119	206	48	as	as	IN
40119	206	49	the	the	DT
40119	206	50	eye	eye	NN
40119	206	51	,	,	,
40119	206	52	there	there	EX
40119	206	53	is	be	VBZ
40119	206	54	perhaps	perhaps	RB
40119	206	55	none	none	NN
40119	206	56	which	which	WDT
40119	206	57	is	be	VBZ
40119	206	58	marked	mark	VBN
40119	206	59	with	with	IN
40119	206	60	imperfections	imperfection	NNS
40119	206	61	so	so	RB
40119	206	62	striking	striking	JJ
40119	206	63	.	.	.
40119	207	1	Many	many	JJ
40119	207	2	of	of	IN
40119	207	3	its	-PRON-	PRP$
40119	207	4	defects	defect	NNS
40119	207	5	are	be	VBP
40119	207	6	the	the	DT
40119	207	7	more	more	RBR
40119	207	8	striking	striking	JJ
40119	207	9	because	because	IN
40119	207	10	they	-PRON-	PRP
40119	207	11	are	be	VBP
40119	207	12	so	so	RB
40119	207	13	obvious	obvious	JJ
40119	207	14	,	,	,
40119	207	15	being	be	VBG
40119	207	16	such	such	JJ
40119	207	17	as	as	IN
40119	207	18	would	would	MD
40119	207	19	never	never	RB
40119	207	20	be	be	VB
40119	207	21	tolerated	tolerate	VBN
40119	207	22	in	in	IN
40119	207	23	optical	optical	JJ
40119	207	24	instruments	instrument	NNS
40119	207	25	of	of	IN
40119	207	26	human	human	JJ
40119	207	27	manufacture	manufacture	NN
40119	207	28	.	.	.
40119	208	1	In	in	IN
40119	208	2	any	any	DT
40119	208	3	fairly	fairly	RB
40119	208	4	good	good	JJ
40119	208	5	camera	camera	NN
40119	208	6	or	or	CC
40119	208	7	telescope	telescope	NN
40119	208	8	or	or	CC
40119	208	9	microscope	microscope	VB
40119	208	10	we	-PRON-	PRP
40119	208	11	should	should	MD
40119	208	12	expect	expect	VB
40119	208	13	to	to	TO
40119	208	14	find	find	VB
40119	208	15	that	that	IN
40119	208	16	the	the	DT
40119	208	17	lenses	lense	NNS
40119	208	18	were	be	VBD
40119	208	19	symmetrically	symmetrically	RB
40119	208	20	figured	figure	VBN
40119	208	21	,	,	,
40119	208	22	free	free	JJ
40119	208	23	from	from	IN
40119	208	24	striæ	striæ	NN
40119	208	25	and	and	CC
40119	208	26	properly	properly	RB
40119	208	27	centred	centre	VBN
40119	208	28	;	;	:
40119	208	29	also	also	RB
40119	208	30	that	that	IN
40119	208	31	they	-PRON-	PRP
40119	208	32	were	be	VBD
40119	208	33	achromatic	achromatic	JJ
40119	208	34	and	and	CC
40119	208	35	efficiently	efficiently	RB
40119	208	36	corrected	correct	VBN
40119	208	37	for	for	IN
40119	208	38	spherical	spherical	JJ
40119	208	39	aberration	aberration	NN
40119	208	40	.	.	.
40119	209	1	In	in	IN
40119	209	2	the	the	DT
40119	209	3	eye	eye	NN
40119	209	4	not	not	RB
40119	209	5	one	one	CD
40119	209	6	of	of	IN
40119	209	7	these	these	DT
40119	209	8	elementary	elementary	JJ
40119	209	9	requirements	requirement	NNS
40119	209	10	is	be	VBZ
40119	209	11	fulfilled	fulfil	VBN
40119	209	12	.	.	.
40119	210	1	The	the	DT
40119	210	2	external	external	JJ
40119	210	3	surface	surface	NN
40119	210	4	of	of	IN
40119	210	5	the	the	DT
40119	210	6	lens	lens	NN
40119	210	7	formed	form	VBN
40119	210	8	by	by	IN
40119	210	9	the	the	DT
40119	210	10	aqueous	aqueous	JJ
40119	210	11	humour	humour	NN
40119	210	12	and	and	CC
40119	210	13	the	the	DT
40119	210	14	cornea	cornea	NN
40119	210	15	is	be	VBZ
40119	210	16	not	not	RB
40119	210	17	a	a	DT
40119	210	18	surface	surface	NN
40119	210	19	of	of	IN
40119	210	20	revolution	revolution	NN
40119	210	21	,	,	,
40119	210	22	such	such	JJ
40119	210	23	as	as	IN
40119	210	24	would	would	MD
40119	210	25	be	be	VB
40119	210	26	fashioned	fashion	VBN
40119	210	27	by	by	IN
40119	210	28	a	a	DT
40119	210	29	turning	turn	VBG
40119	210	30	lathe	lathe	NN
40119	210	31	or	or	CC
40119	210	32	a	a	DT
40119	210	33	lens	lens	NN
40119	210	34	-	-	HYPH
40119	210	35	grinding	grind	VBG
40119	210	36	machine	machine	NN
40119	210	37	;	;	:
40119	210	38	its	-PRON-	PRP$
40119	210	39	curvature	curvature	NN
40119	210	40	is	be	VBZ
40119	210	41	greater	great	JJR
40119	210	42	in	in	IN
40119	210	43	a	a	DT
40119	210	44	vertical	vertical	JJ
40119	210	45	than	than	IN
40119	210	46	in	in	IN
40119	210	47	a	a	DT
40119	210	48	horizontal	horizontal	JJ
40119	210	49	direction	direction	NN
40119	210	50	,	,	,
40119	210	51	and	and	CC
40119	210	52	the	the	DT
40119	210	53	distinctness	distinctness	NN
40119	210	54	of	of	IN
40119	210	55	the	the	DT
40119	210	56	focussed	focusse	VBN
40119	210	57	image	image	NN
40119	210	58	is	be	VBZ
40119	210	59	consequently	consequently	RB
40119	210	60	impaired	impaired	JJ
40119	210	61	.	.	.
40119	211	1	Again	again	RB
40119	211	2	,	,	,
40119	211	3	the	the	DT
40119	211	4	crystalline	crystalline	NN
40119	211	5	lens	lens	NN
40119	211	6	is	be	VBZ
40119	211	7	constructed	construct	VBN
40119	211	8	of	of	IN
40119	211	9	a	a	DT
40119	211	10	number	number	NN
40119	211	11	of	of	IN
40119	211	12	separate	separate	JJ
40119	211	13	portions	portion	NNS
40119	211	14	which	which	WDT
40119	211	15	are	be	VBP
40119	211	16	imperfectly	imperfectly	RB
40119	211	17	joined	join	VBN
40119	211	18	together	together	RB
40119	211	19	.	.	.
40119	212	1	Striæ	striæ	NN
40119	212	2	occur	occur	VB
40119	212	3	along	along	IN
40119	212	4	the	the	DT
40119	212	5	junctions	junction	NNS
40119	212	6	,	,	,
40119	212	7	and	and	CC
40119	212	8	the	the	DT
40119	212	9	light	light	NN
40119	212	10	which	which	WDT
40119	212	11	traverses	traverse	VBZ
40119	212	12	them	-PRON-	PRP
40119	212	13	,	,	,
40119	212	14	instead	instead	RB
40119	212	15	of	of	IN
40119	212	16	being	be	VBG
40119	212	17	uniformly	uniformly	RB
40119	212	18	refracted	refract	VBN
40119	212	19	,	,	,
40119	212	20	is	be	VBZ
40119	212	21	scattered	scatter	VBN
40119	212	22	irregularly	irregularly	RB
40119	212	23	.	.	.
40119	213	1	Moreover	moreover	RB
40119	213	2	the	the	DT
40119	213	3	system	system	NN
40119	213	4	of	of	IN
40119	213	5	lenses	lense	NNS
40119	213	6	is	be	VBZ
40119	213	7	not	not	RB
40119	213	8	centred	centre	VBN
40119	213	9	upon	upon	IN
40119	213	10	a	a	DT
40119	213	11	common	common	JJ
40119	213	12	axis	axis	NN
40119	213	13	;	;	:
40119	213	14	neither	neither	CC
40119	213	15	is	be	VBZ
40119	213	16	it	-PRON-	PRP
40119	213	17	achromatic	achromatic	JJ
40119	213	18	,	,	,
40119	213	19	while	while	IN
40119	213	20	the	the	DT
40119	213	21	means	mean	NNS
40119	213	22	employed	employ	VBN
40119	213	23	for	for	IN
40119	213	24	correcting	correct	VBG
40119	213	25	spherical	spherical	JJ
40119	213	26	aberration	aberration	NN
40119	213	27	are	be	VBP
40119	213	28	inadequate	inadequate	JJ
40119	213	29	.	.	.
40119	214	1	The	the	DT
40119	214	2	purchaser	purchaser	NN
40119	214	3	of	of	IN
40119	214	4	an	an	DT
40119	214	5	optical	optical	JJ
40119	214	6	instrument	instrument	NN
40119	214	7	which	which	WDT
40119	214	8	turned	turn	VBD
40119	214	9	out	out	RP
40119	214	10	to	to	TO
40119	214	11	have	have	VB
40119	214	12	such	such	JJ
40119	214	13	faults	fault	NNS
40119	214	14	as	as	IN
40119	214	15	these	these	DT
40119	214	16	would	would	MD
40119	214	17	certainly	certainly	RB
40119	214	18	,	,	,
40119	214	19	as	as	IN
40119	214	20	the	the	DT
40119	214	21	late	late	JJ
40119	214	22	Professor	Professor	NNP
40119	214	23	Helmholtz	Helmholtz	NNP
40119	214	24	remarked	remark	VBD
40119	214	25	,	,	,
40119	214	26	be	be	VB
40119	214	27	justified	justify	VBN
40119	214	28	in	in	IN
40119	214	29	returning	return	VBG
40119	214	30	it	-PRON-	PRP
40119	214	31	to	to	IN
40119	214	32	the	the	DT
40119	214	33	maker	maker	NN
40119	214	34	and	and	CC
40119	214	35	blaming	blame	VBG
40119	214	36	him	-PRON-	PRP
40119	214	37	severely	severely	RB
40119	214	38	for	for	IN
40119	214	39	his	-PRON-	PRP$
40119	214	40	carelessness	carelessness	NN
40119	214	41	.	.	.
40119	215	1	I	-PRON-	PRP
40119	215	2	would	would	MD
40119	215	3	not	not	RB
40119	215	4	,	,	,
40119	215	5	of	of	IN
40119	215	6	course	course	NN
40119	215	7	,	,	,
40119	215	8	have	have	VBP
40119	215	9	it	-PRON-	PRP
40119	215	10	believed	believe	VBN
40119	215	11	that	that	IN
40119	215	12	scientific	scientific	JJ
40119	215	13	men	man	NNS
40119	215	14	are	be	VBP
40119	215	15	conceited	conceite	VBN
40119	215	16	enough	enough	RB
40119	215	17	to	to	TO
40119	215	18	imagine	imagine	VB
40119	215	19	themselves	-PRON-	PRP
40119	215	20	capable	capable	JJ
40119	215	21	of	of	IN
40119	215	22	designing	design	VBG
40119	215	23	a	a	DT
40119	215	24	better	well	JJR
40119	215	25	eye	eye	NN
40119	215	26	than	than	IN
40119	215	27	is	be	VBZ
40119	215	28	to	to	TO
40119	215	29	be	be	VB
40119	215	30	found	find	VBN
40119	215	31	in	in	IN
40119	215	32	nature	nature	NN
40119	215	33	.	.	.
40119	216	1	That	that	DT
40119	216	2	would	would	MD
40119	216	3	be	be	VB
40119	216	4	an	an	DT
40119	216	5	absurdity	absurdity	NN
40119	216	6	.	.	.
40119	217	1	They	-PRON-	PRP
40119	217	2	are	be	VBP
40119	217	3	quite	quite	RB
40119	217	4	ready	ready	JJ
40119	217	5	to	to	TO
40119	217	6	admit	admit	VB
40119	217	7	that	that	IN
40119	217	8	there	there	EX
40119	217	9	may	may	MD
40119	217	10	exist	exist	VB
40119	217	11	sufficiently	sufficiently	RB
40119	217	12	good	good	JJ
40119	217	13	reasons	reason	NNS
40119	217	14	for	for	IN
40119	217	15	the	the	DT
40119	217	16	undoubted	undoubted	JJ
40119	217	17	blemishes	blemish	NNS
40119	217	18	which	which	WDT
40119	217	19	have	have	VBP
40119	217	20	been	be	VBN
40119	217	21	indicated	indicate	VBN
40119	217	22	,	,	,
40119	217	23	as	as	RB
40119	217	24	well	well	RB
40119	217	25	as	as	IN
40119	217	26	for	for	IN
40119	217	27	others	other	NNS
40119	217	28	which	which	WDT
40119	217	29	will	will	MD
40119	217	30	be	be	VB
40119	217	31	referred	refer	VBN
40119	217	32	to	to	IN
40119	217	33	later	later	RB
40119	217	34	.	.	.
40119	218	1	It	-PRON-	PRP
40119	218	2	is	be	VBZ
40119	218	3	indeed	indeed	RB
40119	218	4	well	well	RB
40119	218	5	known	know	VBN
40119	218	6	that	that	IN
40119	218	7	the	the	DT
40119	218	8	general	general	JJ
40119	218	9	efficiency	efficiency	NN
40119	218	10	of	of	IN
40119	218	11	a	a	DT
40119	218	12	machine	machine	NN
40119	218	13	as	as	IN
40119	218	14	a	a	DT
40119	218	15	whole	whole	NN
40119	218	16	may	may	MD
40119	218	17	often	often	RB
40119	218	18	be	be	VB
40119	218	19	best	well	RBS
40119	218	20	secured	secure	VBN
40119	218	21	by	by	IN
40119	218	22	the	the	DT
40119	218	23	sacrifice	sacrifice	NN
40119	218	24	of	of	IN
40119	218	25	ideal	ideal	JJ
40119	218	26	perfection	perfection	NN
40119	218	27	in	in	IN
40119	218	28	some	some	DT
40119	218	29	of	of	IN
40119	218	30	its	-PRON-	PRP$
40119	218	31	parts	part	NNS
40119	218	32	.	.	.
40119	219	1	With	with	IN
40119	219	2	all	all	DT
40119	219	3	its	-PRON-	PRP$
40119	219	4	anomalies	anomaly	NNS
40119	219	5	the	the	DT
40119	219	6	eye	eye	NN
40119	219	7	fulfils	fulfil	VBZ
40119	219	8	its	-PRON-	PRP$
40119	219	9	proper	proper	JJ
40119	219	10	function	function	NN
40119	219	11	very	very	RB
40119	219	12	perfectly	perfectly	RB
40119	219	13	,	,	,
40119	219	14	and	and	CC
40119	219	15	is	be	VBZ
40119	219	16	regarded	regard	VBN
40119	219	17	by	by	IN
40119	219	18	those	those	DT
40119	219	19	who	who	WP
40119	219	20	have	have	VBP
40119	219	21	studied	study	VBN
40119	219	22	it	-PRON-	PRP
40119	219	23	most	most	RBS
40119	219	24	closely	closely	RB
40119	219	25	with	with	IN
40119	219	26	feelings	feeling	NNS
40119	219	27	of	of	IN
40119	219	28	wonder	wonder	NN
40119	219	29	and	and	CC
40119	219	30	humble	humble	JJ
40119	219	31	admiration	admiration	NN
40119	219	32	.	.	.
40119	220	1	[	[	-LRB-
40119	220	2	3	3	LS
40119	220	3	]	]	-RRB-
40119	220	4	CHAPTER	CHAPTER	NNP
40119	220	5	II	II	NNP
40119	220	6	.	.	.
40119	221	1	COLOUR	COLOUR	NNS
40119	221	2	AND	and	CC
40119	221	3	ITS	its	PRP$
40119	221	4	PERCEPTION	perception	NN
40119	221	5	.	.	.
40119	222	1	It	-PRON-	PRP
40119	222	2	was	be	VBD
40119	222	3	explained	explain	VBN
40119	222	4	in	in	IN
40119	222	5	the	the	DT
40119	222	6	last	last	JJ
40119	222	7	chapter	chapter	NN
40119	222	8	that	that	IN
40119	222	9	we	-PRON-	PRP
40119	222	10	see	see	VBP
40119	222	11	things	thing	NNS
40119	222	12	through	through	IN
40119	222	13	the	the	DT
40119	222	14	agency	agency	NN
40119	222	15	of	of	IN
40119	222	16	the	the	DT
40119	222	17	light	light	NN
40119	222	18	--	--	:
40119	222	19	emitted	emit	VBN
40119	222	20	or	or	CC
40119	222	21	reflected	reflect	VBN
40119	222	22	--	--	:
40119	222	23	which	which	WDT
40119	222	24	proceeds	proceed	VBZ
40119	222	25	from	from	IN
40119	222	26	them	-PRON-	PRP
40119	222	27	to	to	IN
40119	222	28	the	the	DT
40119	222	29	eye	eye	NN
40119	222	30	,	,	,
40119	222	31	and	and	CC
40119	222	32	is	be	VBZ
40119	222	33	suitably	suitably	RB
40119	222	34	distributed	distribute	VBN
40119	222	35	over	over	IN
40119	222	36	the	the	DT
40119	222	37	retina	retina	NNP
40119	222	38	by	by	IN
40119	222	39	the	the	DT
40119	222	40	action	action	NN
40119	222	41	of	of	IN
40119	222	42	a	a	DT
40119	222	43	system	system	NN
40119	222	44	of	of	IN
40119	222	45	lenses	lense	NNS
40119	222	46	.	.	.
40119	223	1	Now	now	RB
40119	223	2	the	the	DT
40119	223	3	"	"	``
40119	223	4	image	image	NN
40119	223	5	"	"	''
40119	223	6	thus	thus	RB
40119	223	7	formed	form	VBN
40119	223	8	is	be	VBZ
40119	223	9	not	not	RB
40119	223	10	generally	generally	RB
40119	223	11	perceived	perceive	VBN
40119	223	12	as	as	IN
40119	223	13	a	a	DT
40119	223	14	simple	simple	JJ
40119	223	15	monochromatic	monochromatic	JJ
40119	223	16	one	one	NN
40119	223	17	,	,	,
40119	223	18	darker	dark	JJR
40119	223	19	in	in	IN
40119	223	20	some	some	DT
40119	223	21	parts	part	NNS
40119	223	22	,	,	,
40119	223	23	lighter	light	JJR
40119	223	24	in	in	IN
40119	223	25	others	other	NNS
40119	223	26	,	,	,
40119	223	27	like	like	IN
40119	223	28	a	a	DT
40119	223	29	black	black	JJ
40119	223	30	and	and	CC
40119	223	31	white	white	JJ
40119	223	32	engraving	engraving	NN
40119	223	33	.	.	.
40119	224	1	It	-PRON-	PRP
40119	224	2	is	be	VBZ
40119	224	3	,	,	,
40119	224	4	in	in	IN
40119	224	5	most	most	JJS
40119	224	6	cases	case	NNS
40119	224	7	at	at	IN
40119	224	8	least	least	JJS
40119	224	9	,	,	,
40119	224	10	characterised	characterise	VBN
40119	224	11	by	by	IN
40119	224	12	a	a	DT
40119	224	13	variety	variety	NN
40119	224	14	of	of	IN
40119	224	15	colours	colour	NNS
40119	224	16	,	,	,
40119	224	17	the	the	DT
40119	224	18	light	light	NN
40119	224	19	which	which	WDT
40119	224	20	comes	come	VBZ
40119	224	21	from	from	IN
40119	224	22	different	different	JJ
40119	224	23	objects	object	NNS
40119	224	24	,	,	,
40119	224	25	or	or	CC
40119	224	26	from	from	IN
40119	224	27	different	different	JJ
40119	224	28	parts	part	NNS
40119	224	29	of	of	IN
40119	224	30	the	the	DT
40119	224	31	same	same	JJ
40119	224	32	object	object	NN
40119	224	33	,	,	,
40119	224	34	having	have	VBG
40119	224	35	the	the	DT
40119	224	36	power	power	NN
40119	224	37	of	of	IN
40119	224	38	exciting	exciting	JJ
40119	224	39	different	different	JJ
40119	224	40	colour	colour	NN
40119	224	41	sensations	sensation	NNS
40119	224	42	.	.	.
40119	225	1	Light	light	NN
40119	225	2	which	which	WDT
40119	225	3	has	have	VBZ
40119	225	4	the	the	DT
40119	225	5	property	property	NN
40119	225	6	of	of	IN
40119	225	7	exciting	excite	VBG
40119	225	8	the	the	DT
40119	225	9	sensation	sensation	NN
40119	225	10	of	of	IN
40119	225	11	any	any	DT
40119	225	12	colour	colour	NN
40119	225	13	is	be	VBZ
40119	225	14	commonly	commonly	RB
40119	225	15	spoken	speak	VBN
40119	225	16	of	of	IN
40119	225	17	as	as	IN
40119	225	18	coloured	colour	VBN
40119	225	19	light	light	NN
40119	225	20	.	.	.
40119	226	1	The	the	DT
40119	226	2	light	light	NN
40119	226	3	reflected	reflect	VBN
40119	226	4	by	by	IN
40119	226	5	a	a	DT
40119	226	6	soldier	soldier	NN
40119	226	7	's	's	POS
40119	226	8	coat	coat	NN
40119	226	9	,	,	,
40119	226	10	for	for	IN
40119	226	11	example	example	NN
40119	226	12	,	,	,
40119	226	13	may	may	MD
40119	226	14	be	be	VB
40119	226	15	called	call	VBN
40119	226	16	red	red	JJ
40119	226	17	light	light	NN
40119	226	18	,	,	,
40119	226	19	because	because	IN
40119	226	20	when	when	WRB
40119	226	21	it	-PRON-	PRP
40119	226	22	falls	fall	VBZ
40119	226	23	upon	upon	IN
40119	226	24	the	the	DT
40119	226	25	eye	eye	NN
40119	226	26	it	-PRON-	PRP
40119	226	27	gives	give	VBZ
40119	226	28	rise	rise	NN
40119	226	29	to	to	IN
40119	226	30	a	a	DT
40119	226	31	sensation	sensation	NN
40119	226	32	of	of	IN
40119	226	33	redness	redness	NN
40119	226	34	.	.	.
40119	227	1	But	but	CC
40119	227	2	it	-PRON-	PRP
40119	227	3	must	must	MD
40119	227	4	be	be	VB
40119	227	5	understood	understand	VBN
40119	227	6	that	that	IN
40119	227	7	this	this	DT
40119	227	8	mode	mode	NN
40119	227	9	of	of	IN
40119	227	10	expression	expression	NN
40119	227	11	is	be	VBZ
40119	227	12	only	only	RB
40119	227	13	a	a	DT
40119	227	14	convenient	convenient	JJ
40119	227	15	abbreviation	abbreviation	NN
40119	227	16	,	,	,
40119	227	17	for	for	IN
40119	227	18	there	there	EX
40119	227	19	can	can	MD
40119	227	20	,	,	,
40119	227	21	of	of	IN
40119	227	22	course	course	NN
40119	227	23	,	,	,
40119	227	24	be	be	VB
40119	227	25	no	no	DT
40119	227	26	objective	objective	JJ
40119	227	27	colour	colour	NN
40119	227	28	in	in	IN
40119	227	29	the	the	DT
40119	227	30	light	light	NN
40119	227	31	or	or	CC
40119	227	32	"	"	``
40119	227	33	radiation	radiation	NN
40119	227	34	"	"	''
40119	227	35	itself	-PRON-	PRP
40119	227	36	.	.	.
40119	228	1	Wherein	wherein	WRB
40119	228	2	,	,	,
40119	228	3	then	then	RB
40119	228	4	,	,	,
40119	228	5	does	do	VBZ
40119	228	6	coloured	colour	VBN
40119	228	7	light	light	NN
40119	228	8	differ	differ	VB
40119	228	9	from	from	IN
40119	228	10	white	white	JJ
40119	228	11	?	?	.
40119	229	1	Why	why	WRB
40119	229	2	do	do	VBP
40119	229	3	things	thing	NNS
40119	229	4	appear	appear	VB
40119	229	5	to	to	TO
40119	229	6	be	be	VB
40119	229	7	variously	variously	RB
40119	229	8	coloured	colour	VBN
40119	229	9	when	when	WRB
40119	229	10	illuminated	illuminate	VBN
40119	229	11	by	by	IN
40119	229	12	light	light	NN
40119	229	13	which	which	WDT
40119	229	14	is	be	VBZ
40119	229	15	colourless	colourless	JJ
40119	229	16	?	?	.
40119	230	1	And	and	CC
40119	230	2	how	how	WRB
40119	230	3	do	do	VBP
40119	230	4	coloured	colour	VBN
40119	230	5	lights	light	NNS
40119	230	6	affect	affect	VB
40119	230	7	the	the	DT
40119	230	8	visual	visual	JJ
40119	230	9	organs	organ	NNS
40119	230	10	so	so	IN
40119	230	11	as	as	IN
40119	230	12	to	to	TO
40119	230	13	evoke	evoke	VB
40119	230	14	appropriate	appropriate	JJ
40119	230	15	sensations	sensation	NNS
40119	230	16	?	?	.
40119	231	1	These	these	DT
40119	231	2	are	be	VBP
40119	231	3	questions	question	NNS
40119	231	4	--	--	:
40119	231	5	the	the	DT
40119	231	6	first	first	JJ
40119	231	7	two	two	CD
40119	231	8	of	of	IN
40119	231	9	a	a	DT
40119	231	10	physical	physical	JJ
40119	231	11	character	character	NN
40119	231	12	,	,	,
40119	231	13	the	the	DT
40119	231	14	last	last	JJ
40119	231	15	partly	partly	RB
40119	231	16	physiological	physiological	JJ
40119	231	17	and	and	CC
40119	231	18	partly	partly	RB
40119	231	19	psychological	psychological	JJ
40119	231	20	--	--	:
40119	231	21	which	which	WDT
40119	231	22	it	-PRON-	PRP
40119	231	23	is	be	VBZ
40119	231	24	now	now	RB
40119	231	25	proposed	propose	VBN
40119	231	26	to	to	TO
40119	231	27	discuss	discuss	VB
40119	231	28	.	.	.
40119	232	1	The	the	DT
40119	232	2	matter	matter	NN
40119	232	3	has	have	VBZ
40119	232	4	already	already	RB
40119	232	5	been	be	VBN
40119	232	6	touched	touch	VBN
40119	232	7	upon	upon	IN
40119	232	8	,	,	,
40119	232	9	though	though	IN
40119	232	10	very	very	RB
40119	232	11	slightly	slightly	RB
40119	232	12	,	,	,
40119	232	13	in	in	IN
40119	232	14	connection	connection	NN
40119	232	15	with	with	IN
40119	232	16	the	the	DT
40119	232	17	spectrum	spectrum	NN
40119	232	18	.	.	.
40119	233	1	Let	let	VB
40119	233	2	us	-PRON-	PRP
40119	233	3	again	again	RB
40119	233	4	turn	turn	VB
40119	233	5	to	to	IN
40119	233	6	the	the	DT
40119	233	7	spectrum	spectrum	NN
40119	233	8	and	and	CC
40119	233	9	consider	consider	VB
40119	233	10	it	-PRON-	PRP
40119	233	11	a	a	DT
40119	233	12	little	little	RB
40119	233	13	more	more	RBR
40119	233	14	fully	fully	RB
40119	233	15	.	.	.
40119	234	1	It	-PRON-	PRP
40119	234	2	is	be	VBZ
40119	234	3	easily	easily	RB
40119	234	4	seen	see	VBN
40119	234	5	that	that	IN
40119	234	6	the	the	DT
40119	234	7	luminous	luminous	JJ
40119	234	8	band	band	NN
40119	234	9	contains	contain	VBZ
40119	234	10	six	six	CD
40119	234	11	principal	principal	JJ
40119	234	12	hues	hue	NNS
40119	234	13	or	or	CC
40119	234	14	tones	tone	NNS
40119	234	15	of	of	IN
40119	234	16	colour	colour	NN
40119	234	17	--	--	:
40119	234	18	red	red	JJ
40119	234	19	,	,	,
40119	234	20	orange	orange	JJ
40119	234	21	,	,	,
40119	234	22	yellow	yellow	JJ
40119	234	23	,	,	,
40119	234	24	green	green	JJ
40119	234	25	,	,	,
40119	234	26	blue	blue	JJ
40119	234	27	,	,	,
40119	234	28	and	and	CC
40119	234	29	violet	violet	NN
40119	234	30	.	.	.
40119	235	1	(	(	-LRB-
40119	235	2	See	see	VB
40119	235	3	Fig	fig	NN
40119	235	4	.	.	.
40119	236	1	1	1	CD
40119	236	2	,	,	,
40119	236	3	page	page	NN
40119	236	4	12	12	CD
40119	236	5	.	.	.
40119	236	6	)	)	-RRB-
40119	237	1	These	these	DT
40119	237	2	however	however	RB
40119	237	3	merge	merge	VBP
40119	237	4	into	into	IN
40119	237	5	one	one	NN
40119	237	6	another	another	DT
40119	237	7	so	so	RB
40119	237	8	gradually	gradually	RB
40119	237	9	that	that	IN
40119	237	10	it	-PRON-	PRP
40119	237	11	is	be	VBZ
40119	237	12	impossible	impossible	JJ
40119	237	13	to	to	TO
40119	237	14	say	say	VB
40119	237	15	exactly	exactly	RB
40119	237	16	where	where	WRB
40119	237	17	any	any	DT
40119	237	18	one	one	CD
40119	237	19	colour	colour	NN
40119	237	20	begins	begin	VBZ
40119	237	21	and	and	CC
40119	237	22	ends	end	NNS
40119	237	23	.	.	.
40119	238	1	Look	look	VB
40119	238	2	,	,	,
40119	238	3	for	for	IN
40119	238	4	instance	instance	NN
40119	238	5	,	,	,
40119	238	6	at	at	IN
40119	238	7	the	the	DT
40119	238	8	somewhat	somewhat	RB
40119	238	9	narrow	narrow	JJ
40119	238	10	but	but	CC
40119	238	11	very	very	RB
40119	238	12	conspicuous	conspicuous	JJ
40119	238	13	stripe	stripe	NN
40119	238	14	of	of	IN
40119	238	15	yellow	yellow	NN
40119	238	16	.	.	.
40119	239	1	Towards	towards	IN
40119	239	2	the	the	DT
40119	239	3	right	right	NN
40119	239	4	of	of	IN
40119	239	5	this	this	DT
40119	239	6	stripe	stripe	NN
40119	239	7	the	the	DT
40119	239	8	colour	colour	NN
40119	239	9	gradually	gradually	RB
40119	239	10	becomes	become	VBZ
40119	239	11	greenish	greenish	NN
40119	239	12	-	-	HYPH
40119	239	13	yellow	yellow	JJ
40119	239	14	;	;	:
40119	239	15	a	a	DT
40119	239	16	little	little	JJ
40119	239	17	further	far	RBR
40119	239	18	on	on	IN
40119	239	19	it	-PRON-	PRP
40119	239	20	is	be	VBZ
40119	239	21	yellowish	yellowish	JJ
40119	239	22	-	-	HYPH
40119	239	23	green	green	JJ
40119	239	24	,	,	,
40119	239	25	and	and	CC
40119	239	26	at	at	IN
40119	239	27	length	length	NN
40119	239	28	,	,	,
40119	239	29	by	by	IN
40119	239	30	insensible	insensible	JJ
40119	239	31	gradations	gradation	NNS
40119	239	32	,	,	,
40119	239	33	a	a	DT
40119	239	34	full	full	JJ
40119	239	35	,	,	,
40119	239	36	pure	pure	JJ
40119	239	37	green	green	NN
40119	239	38	is	be	VBZ
40119	239	39	reached	reach	VBN
40119	239	40	.	.	.
40119	240	1	The	the	DT
40119	240	2	six	six	CD
40119	240	3	most	most	RBS
40119	240	4	prominent	prominent	JJ
40119	240	5	hues	hue	NNS
40119	240	6	of	of	IN
40119	240	7	the	the	DT
40119	240	8	spectrum	spectrum	NN
40119	240	9	are	be	VBP
40119	240	10	,	,	,
40119	240	11	in	in	IN
40119	240	12	fact	fact	NN
40119	240	13	,	,	,
40119	240	14	supplemented	supplement	VBN
40119	240	15	by	by	IN
40119	240	16	an	an	DT
40119	240	17	immense	immense	JJ
40119	240	18	multitude	multitude	NN
40119	240	19	of	of	IN
40119	240	20	subordinate	subordinate	JJ
40119	240	21	ones	one	NNS
40119	240	22	,	,	,
40119	240	23	the	the	DT
40119	240	24	total	total	JJ
40119	240	25	number	number	NN
40119	240	26	which	which	WDT
40119	240	27	the	the	DT
40119	240	28	eye	eye	NN
40119	240	29	can	can	MD
40119	240	30	recognise	recognise	VB
40119	240	31	as	as	IN
40119	240	32	distinct	distinct	JJ
40119	240	33	being	be	VBG
40119	240	34	not	not	RB
40119	240	35	less	less	JJR
40119	240	36	than	than	IN
40119	240	37	a	a	DT
40119	240	38	thousand	thousand	CD
40119	240	39	.	.	.
40119	241	1	All	all	PDT
40119	241	2	the	the	DT
40119	241	3	colours	colour	NNS
40119	241	4	that	that	WDT
40119	241	5	we	-PRON-	PRP
40119	241	6	see	see	VBP
40119	241	7	in	in	IN
40119	241	8	nature	nature	NN
40119	241	9	,	,	,
40119	241	10	with	with	IN
40119	241	11	the	the	DT
40119	241	12	exception	exception	NN
40119	241	13	of	of	IN
40119	241	14	the	the	DT
40119	241	15	purples	purple	NNS
40119	241	16	(	(	-LRB-
40119	241	17	about	about	IN
40119	241	18	which	which	WDT
40119	241	19	I	-PRON-	PRP
40119	241	20	shall	shall	MD
40119	241	21	say	say	VB
40119	241	22	more	more	RBR
40119	241	23	presently	presently	RB
40119	241	24	)	)	-RRB-
40119	241	25	,	,	,
40119	241	26	are	be	VBP
40119	241	27	here	here	RB
40119	241	28	represented	represent	VBN
40119	241	29	,	,	,
40119	241	30	and	and	CC
40119	241	31	every	every	DT
40119	241	32	single	single	JJ
40119	241	33	variety	variety	NN
40119	241	34	of	of	IN
40119	241	35	tone	tone	NN
40119	241	36	in	in	IN
40119	241	37	the	the	DT
40119	241	38	prismatic	prismatic	JJ
40119	241	39	scale	scale	NN
40119	241	40	corresponds	correspond	NNS
40119	241	41	with	with	IN
40119	241	42	one	one	CD
40119	241	43	,	,	,
40119	241	44	and	and	CC
40119	241	45	only	only	RB
40119	241	46	one	one	CD
40119	241	47	,	,	,
40119	241	48	definite	definite	JJ
40119	241	49	wave	wave	NN
40119	241	50	-	-	HYPH
40119	241	51	length	length	NN
40119	241	52	of	of	IN
40119	241	53	light	light	NN
40119	241	54	.	.	.
40119	242	1	The	the	DT
40119	242	2	source	source	NN
40119	242	3	of	of	IN
40119	242	4	all	all	PDT
40119	242	5	these	these	DT
40119	242	6	colours	colour	NNS
40119	242	7	is	be	VBZ
40119	242	8	,	,	,
40119	242	9	as	as	IN
40119	242	10	we	-PRON-	PRP
40119	242	11	know	know	VBP
40119	242	12	,	,	,
40119	242	13	a	a	DT
40119	242	14	beam	beam	NN
40119	242	15	of	of	IN
40119	242	16	white	white	JJ
40119	242	17	or	or	CC
40119	242	18	colourless	colourless	JJ
40119	242	19	light	light	NN
40119	242	20	,	,	,
40119	242	21	the	the	DT
40119	242	22	constituents	constituent	NNS
40119	242	23	of	of	IN
40119	242	24	which	which	WDT
40119	242	25	have	have	VBP
40119	242	26	been	be	VBN
40119	242	27	sorted	sort	VBN
40119	242	28	out	out	RP
40119	242	29	and	and	CC
40119	242	30	arranged	arrange	VBD
40119	242	31	so	so	IN
40119	242	32	that	that	IN
40119	242	33	they	-PRON-	PRP
40119	242	34	fall	fall	VBP
40119	242	35	side	side	NN
40119	242	36	by	by	IN
40119	242	37	side	side	NN
40119	242	38	upon	upon	IN
40119	242	39	the	the	DT
40119	242	40	screen	screen	NN
40119	242	41	in	in	IN
40119	242	42	the	the	DT
40119	242	43	order	order	NN
40119	242	44	of	of	IN
40119	242	45	their	-PRON-	PRP$
40119	242	46	several	several	JJ
40119	242	47	wave	wave	NN
40119	242	48	-	-	HYPH
40119	242	49	lengths	length	NNS
40119	242	50	.	.	.
40119	243	1	If	if	IN
40119	243	2	,	,	,
40119	243	3	then	then	RB
40119	243	4	,	,	,
40119	243	5	these	these	DT
40119	243	6	coloured	colour	VBN
40119	243	7	constituents	constituent	NNS
40119	243	8	were	be	VBD
40119	243	9	all	all	DT
40119	243	10	mixed	mix	VBN
40119	243	11	together	together	RB
40119	243	12	again	again	RB
40119	243	13	,	,	,
40119	243	14	it	-PRON-	PRP
40119	243	15	would	would	MD
40119	243	16	be	be	VB
40119	243	17	reasonable	reasonable	JJ
40119	243	18	to	to	TO
40119	243	19	expect	expect	VB
40119	243	20	that	that	DT
40119	243	21	pure	pure	JJ
40119	243	22	white	white	JJ
40119	243	23	light	light	NN
40119	243	24	would	would	MD
40119	243	25	be	be	VB
40119	243	26	reproduced	reproduce	VBN
40119	243	27	.	.	.
40119	244	1	The	the	DT
40119	244	2	experiment	experiment	NN
40119	244	3	has	have	VBZ
40119	244	4	been	be	VBN
40119	244	5	performed	perform	VBN
40119	244	6	in	in	IN
40119	244	7	a	a	DT
40119	244	8	great	great	JJ
40119	244	9	many	many	JJ
40119	244	10	different	different	JJ
40119	244	11	ways	way	NNS
40119	244	12	,	,	,
40119	244	13	several	several	JJ
40119	244	14	of	of	IN
40119	244	15	which	which	WDT
40119	244	16	were	be	VBD
40119	244	17	devised	devise	VBN
40119	244	18	by	by	IN
40119	244	19	Newton	Newton	NNP
40119	244	20	himself	-PRON-	PRP
40119	244	21	,	,	,
40119	244	22	and	and	CC
40119	244	23	the	the	DT
40119	244	24	result	result	NN
40119	244	25	admits	admit	VBZ
40119	244	26	of	of	IN
40119	244	27	no	no	DT
40119	244	28	doubt	doubt	RB
40119	244	29	whatever	whatever	WDT
40119	244	30	.	.	.
40119	245	1	The	the	DT
40119	245	2	method	method	NN
40119	245	3	which	which	WDT
40119	245	4	I	-PRON-	PRP
40119	245	5	intend	intend	VBP
40119	245	6	to	to	TO
40119	245	7	describe	describe	VB
40119	245	8	is	be	VBZ
40119	245	9	not	not	RB
40119	245	10	quite	quite	RB
40119	245	11	so	so	RB
40119	245	12	simple	simple	JJ
40119	245	13	as	as	IN
40119	245	14	some	some	DT
40119	245	15	others	other	NNS
40119	245	16	,	,	,
40119	245	17	but	but	CC
40119	245	18	it	-PRON-	PRP
40119	245	19	has	have	VBZ
40119	245	20	great	great	JJ
40119	245	21	advantages	advantage	NNS
40119	245	22	in	in	IN
40119	245	23	the	the	DT
40119	245	24	way	way	NN
40119	245	25	of	of	IN
40119	245	26	convenient	convenient	JJ
40119	245	27	manipulation	manipulation	NN
40119	245	28	,	,	,
40119	245	29	and	and	CC
40119	245	30	affords	afford	VBZ
40119	245	31	the	the	DT
40119	245	32	means	mean	NNS
40119	245	33	of	of	IN
40119	245	34	demonstrating	demonstrate	VBG
40119	245	35	a	a	DT
40119	245	36	number	number	NN
40119	245	37	of	of	IN
40119	245	38	interesting	interesting	JJ
40119	245	39	colour	colour	NN
40119	245	40	effects	effect	NNS
40119	245	41	in	in	IN
40119	245	42	an	an	DT
40119	245	43	easily	easily	RB
40119	245	44	intelligible	intelligible	JJ
40119	245	45	manner	manner	NN
40119	245	46	.	.	.
40119	246	1	By	by	IN
40119	246	2	the	the	DT
40119	246	3	simple	simple	JJ
40119	246	4	operation	operation	NN
40119	246	5	of	of	IN
40119	246	6	moving	move	VBG
40119	246	7	aside	aside	RB
40119	246	8	a	a	DT
40119	246	9	lens	lens	NN
40119	246	10	out	out	IN
40119	246	11	of	of	IN
40119	246	12	the	the	DT
40119	246	13	track	track	NN
40119	246	14	of	of	IN
40119	246	15	the	the	DT
40119	246	16	light	light	NN
40119	246	17	,	,	,
40119	246	18	we	-PRON-	PRP
40119	246	19	can	can	MD
40119	246	20	gather	gather	VB
40119	246	21	up	up	RP
40119	246	22	and	and	CC
40119	246	23	thoroughly	thoroughly	RB
40119	246	24	mix	mix	VB
40119	246	25	together	together	RB
40119	246	26	all	all	PDT
40119	246	27	the	the	DT
40119	246	28	variously	variously	RB
40119	246	29	coloured	colour	VBN
40119	246	30	rays	ray	NNS
40119	246	31	of	of	IN
40119	246	32	the	the	DT
40119	246	33	spectrum	spectrum	NN
40119	246	34	and	and	CC
40119	246	35	cause	cause	VB
40119	246	36	them	-PRON-	PRP
40119	246	37	to	to	TO
40119	246	38	form	form	VB
40119	246	39	upon	upon	IN
40119	246	40	the	the	DT
40119	246	41	screen	screen	NN
40119	246	42	a	a	DT
40119	246	43	bright	bright	JJ
40119	246	44	circular	circular	JJ
40119	246	45	patch	patch	NN
40119	246	46	,	,	,
40119	246	47	which	which	WDT
40119	246	48	,	,	,
40119	246	49	though	though	IN
40119	246	50	due	due	IN
40119	246	51	to	to	IN
40119	246	52	a	a	DT
40119	246	53	mixture	mixture	NN
40119	246	54	of	of	IN
40119	246	55	a	a	DT
40119	246	56	thousand	thousand	CD
40119	246	57	different	different	JJ
40119	246	58	hues	hue	NNS
40119	246	59	,	,	,
40119	246	60	is	be	VBZ
40119	246	61	absolutely	absolutely	RB
40119	246	62	white	white	JJ
40119	246	63	.	.	.
40119	247	1	When	when	WRB
40119	247	2	the	the	DT
40119	247	3	lens	lens	NN
40119	247	4	is	be	VBZ
40119	247	5	replaced	replace	VBN
40119	247	6	,	,	,
40119	247	7	which	which	WDT
40119	247	8	is	be	VBZ
40119	247	9	done	do	VBN
40119	247	10	in	in	IN
40119	247	11	an	an	DT
40119	247	12	instant	instant	NN
40119	247	13	,	,	,
40119	247	14	the	the	DT
40119	247	15	mixture	mixture	NN
40119	247	16	is	be	VBZ
40119	247	17	again	again	RB
40119	247	18	analysed	analyse	VBN
40119	247	19	into	into	IN
40119	247	20	its	-PRON-	PRP$
40119	247	21	component	component	NN
40119	247	22	parts	part	NNS
40119	247	23	,	,	,
40119	247	24	and	and	CC
40119	247	25	the	the	DT
40119	247	26	spectrum	spectrum	NN
40119	247	27	reappears	reappears	NNP
40119	247	28	.	.	.
40119	248	1	The	the	DT
40119	248	2	arrangement	arrangement	NN
40119	248	3	of	of	IN
40119	248	4	the	the	DT
40119	248	5	apparatus	apparatus	NN
40119	248	6	,	,	,
40119	248	7	which	which	WDT
40119	248	8	is	be	VBZ
40119	248	9	essentially	essentially	RB
40119	248	10	the	the	DT
40119	248	11	same	same	JJ
40119	248	12	as	as	IN
40119	248	13	that	that	DT
40119	248	14	devised	devise	VBN
40119	248	15	by	by	IN
40119	248	16	Captain	Captain	NNP
40119	248	17	Abney	Abney	NNP
40119	248	18	,	,	,
40119	248	19	and	and	CC
40119	248	20	called	call	VBD
40119	248	21	by	by	IN
40119	248	22	him	-PRON-	PRP
40119	248	23	the	the	DT
40119	248	24	"	"	``
40119	248	25	colour	colour	NN
40119	248	26	-	-	HYPH
40119	248	27	patch	patch	NN
40119	248	28	apparatus	apparatus	NN
40119	248	29	,	,	,
40119	248	30	"	"	''
40119	248	31	is	be	VBZ
40119	248	32	shown	show	VBN
40119	248	33	in	in	IN
40119	248	34	the	the	DT
40119	248	35	annexed	annex	VBN
40119	248	36	diagram	diagram	NN
40119	248	37	(	(	-LRB-
40119	248	38	Fig	fig	NN
40119	248	39	.	.	.
40119	249	1	3	3	LS
40119	249	2	)	)	-RRB-
40119	249	3	.	.	.
40119	250	1	[	[	-LRB-
40119	250	2	Illustration	illustration	NN
40119	250	3	:	:	:
40119	250	4	_	_	NNP
40119	250	5	Fig	Fig	NNP
40119	250	6	.	.	.
40119	251	1	3.--Abney	3.--Abney	NNP
40119	251	2	's	's	POS
40119	251	3	Colour	Colour	NNP
40119	251	4	-	-	HYPH
40119	251	5	patch	patch	NN
40119	251	6	Apparatus	Apparatus	NNP
40119	251	7	.	.	.
40119	251	8	_	_	NNP
40119	251	9	]	]	-RRB-
40119	251	10	The	the	DT
40119	251	11	light	light	NN
40119	251	12	of	of	IN
40119	251	13	an	an	DT
40119	251	14	electric	electric	JJ
40119	251	15	lamp	lamp	NN
40119	251	16	A	a	DT
40119	251	17	placed	place	VBN
40119	251	18	inside	inside	IN
40119	251	19	the	the	DT
40119	251	20	lantern	lantern	NN
40119	251	21	is	be	VBZ
40119	251	22	concentrated	concentrate	VBN
40119	251	23	by	by	IN
40119	251	24	the	the	DT
40119	251	25	condensing	condense	VBG
40119	251	26	lenses	lense	NNS
40119	251	27	B	B	NNP
40119	251	28	upon	upon	IN
40119	251	29	a	a	DT
40119	251	30	narrow	narrow	JJ
40119	251	31	adjustable	adjustable	JJ
40119	251	32	slit	slit	NN
40119	251	33	C.	C.	NNP
40119	251	34	The	the	DT
40119	251	35	framework	framework	NN
40119	251	36	of	of	IN
40119	251	37	this	this	DT
40119	251	38	slit	slit	NN
40119	251	39	is	be	VBZ
40119	251	40	attached	attach	VBN
40119	251	41	to	to	IN
40119	251	42	one	one	CD
40119	251	43	end	end	NN
40119	251	44	of	of	IN
40119	251	45	a	a	DT
40119	251	46	telescope	telescope	NN
40119	251	47	tube	tube	NN
40119	251	48	,	,	,
40119	251	49	which	which	WDT
40119	251	50	carries	carry	VBZ
40119	251	51	at	at	IN
40119	251	52	the	the	DT
40119	251	53	other	other	JJ
40119	251	54	end	end	NN
40119	251	55	an	an	DT
40119	251	56	achromatic	achromatic	JJ
40119	251	57	lens	lens	NN
40119	251	58	D	d	NN
40119	251	59	of	of	IN
40119	251	60	about	about	IN
40119	251	61	10	10	CD
40119	251	62	inches	inch	NNS
40119	251	63	focus	focus	NN
40119	251	64	.	.	.
40119	252	1	The	the	DT
40119	252	2	rays	ray	NNS
40119	252	3	having	have	VBG
40119	252	4	been	be	VBN
40119	252	5	rendered	render	VBN
40119	252	6	parallel	parallel	JJ
40119	252	7	by	by	IN
40119	252	8	D	d	NN
40119	252	9	are	be	VBP
40119	252	10	refracted	refract	VBN
40119	252	11	by	by	IN
40119	252	12	the	the	DT
40119	252	13	prism	prism	NN
40119	252	14	E	e	NN
40119	252	15	;	;	:
40119	252	16	they	-PRON-	PRP
40119	252	17	then	then	RB
40119	252	18	pass	pass	VBP
40119	252	19	through	through	RP
40119	252	20	a	a	DT
40119	252	21	circular	circular	JJ
40119	252	22	opening	opening	NN
40119	252	23	in	in	IN
40119	252	24	the	the	DT
40119	252	25	brass	brass	NN
40119	252	26	plate	plate	NN
40119	252	27	F	f	NN
40119	252	28	to	to	IN
40119	252	29	the	the	DT
40119	252	30	lens	lens	NN
40119	252	31	G	g	NN
40119	252	32	,	,	,
40119	252	33	the	the	DT
40119	252	34	focal	focal	JJ
40119	252	35	length	length	NN
40119	252	36	of	of	IN
40119	252	37	which	which	WDT
40119	252	38	is	be	VBZ
40119	252	39	7	7	CD
40119	252	40	inches	inch	NNS
40119	252	41	,	,	,
40119	252	42	and	and	CC
40119	252	43	form	form	VB
40119	252	44	a	a	DT
40119	252	45	little	little	JJ
40119	252	46	bright	bright	JJ
40119	252	47	spectrum	spectrum	NN
40119	252	48	upon	upon	IN
40119	252	49	a	a	DT
40119	252	50	white	white	JJ
40119	252	51	card	card	NN
40119	252	52	held	hold	VBN
40119	252	53	in	in	IN
40119	252	54	a	a	DT
40119	252	55	grooved	grooved	JJ
40119	252	56	support	support	NN
40119	252	57	at	at	IN
40119	252	58	H.	h.	NN
40119	252	59	The	the	DT
40119	252	60	card	card	NN
40119	252	61	being	be	VBG
40119	252	62	removed	remove	VBN
40119	252	63	,	,	,
40119	252	64	we	-PRON-	PRP
40119	252	65	place	place	VBP
40119	252	66	at	at	IN
40119	252	67	K	K	NNP
40119	252	68	a	a	DT
40119	252	69	lens	lens	NN
40119	252	70	having	have	VBG
40119	252	71	a	a	DT
40119	252	72	diameter	diameter	NN
40119	252	73	of	of	IN
40119	252	74	5	5	CD
40119	252	75	-	-	SYM
40119	252	76	1/2	1/2	CD
40119	252	77	inches	inch	NNS
40119	252	78	and	and	CC
40119	252	79	a	a	DT
40119	252	80	focal	focal	JJ
40119	252	81	length	length	NN
40119	252	82	of	of	IN
40119	252	83	18	18	CD
40119	252	84	inches	inch	NNS
40119	252	85	or	or	CC
40119	252	86	more	more	JJR
40119	252	87	,	,	,
40119	252	88	and	and	CC
40119	252	89	adjust	adjust	VB
40119	252	90	it	-PRON-	PRP
40119	252	91	so	so	IN
40119	252	92	that	that	IN
40119	252	93	a	a	DT
40119	252	94	sharply	sharply	RB
40119	252	95	defined	define	VBN
40119	252	96	image	image	NN
40119	252	97	of	of	IN
40119	252	98	the	the	DT
40119	252	99	hole	hole	NN
40119	252	100	in	in	IN
40119	252	101	the	the	DT
40119	252	102	brass	brass	NN
40119	252	103	plate	plate	NN
40119	252	104	F	F	NNP
40119	252	105	is	be	VBZ
40119	252	106	formed	form	VBN
40119	252	107	upon	upon	IN
40119	252	108	the	the	DT
40119	252	109	distant	distant	JJ
40119	252	110	white	white	JJ
40119	252	111	screen	screen	NN
40119	252	112	L.	L.	NNP
40119	252	113	If	if	IN
40119	252	114	all	all	PDT
40119	252	115	the	the	DT
40119	252	116	lenses	lense	NNS
40119	252	117	are	be	VBP
40119	252	118	correctly	correctly	RB
40119	252	119	placed	place	VBN
40119	252	120	,	,	,
40119	252	121	this	this	DT
40119	252	122	image	image	NN
40119	252	123	,	,	,
40119	252	124	though	though	IN
40119	252	125	formed	form	VBN
40119	252	126	entirely	entirely	RB
40119	252	127	by	by	IN
40119	252	128	the	the	DT
40119	252	129	rays	ray	NNS
40119	252	130	which	which	WDT
40119	252	131	constituted	constitute	VBD
40119	252	132	the	the	DT
40119	252	133	little	little	JJ
40119	252	134	spectrum	spectrum	NN
40119	252	135	at	at	IN
40119	252	136	H	h	NN
40119	252	137	,	,	,
40119	252	138	will	will	MD
40119	252	139	be	be	VB
40119	252	140	perfectly	perfectly	RB
40119	252	141	free	free	JJ
40119	252	142	from	from	IN
40119	252	143	colour	colour	NN
40119	252	144	even	even	RB
40119	252	145	around	around	IN
40119	252	146	the	the	DT
40119	252	147	edge	edge	NN
40119	252	148	.	.	.
40119	253	1	If	if	IN
40119	253	2	we	-PRON-	PRP
40119	253	3	wish	wish	VBP
40119	253	4	to	to	TO
40119	253	5	project	project	VB
40119	253	6	upon	upon	IN
40119	253	7	the	the	DT
40119	253	8	screen	screen	NN
40119	253	9	L	l	NN
40119	253	10	an	an	DT
40119	253	11	enlarged	enlarge	VBN
40119	253	12	image	image	NN
40119	253	13	of	of	IN
40119	253	14	the	the	DT
40119	253	15	little	little	JJ
40119	253	16	spectrum	spectrum	NN
40119	253	17	,	,	,
40119	253	18	we	-PRON-	PRP
40119	253	19	have	have	VBP
40119	253	20	only	only	RB
40119	253	21	to	to	TO
40119	253	22	use	use	VB
40119	253	23	another	another	DT
40119	253	24	suitable	suitable	JJ
40119	253	25	lens	lens	NN
40119	253	26	I	-PRON-	PRP
40119	253	27	in	in	IN
40119	253	28	conjunction	conjunction	NN
40119	253	29	with	with	IN
40119	253	30	K	K	NNP
40119	253	31	:	:	:
40119	253	32	the	the	DT
40119	253	33	diameter	diameter	NN
40119	253	34	of	of	IN
40119	253	35	that	that	DT
40119	253	36	used	use	VBN
40119	253	37	by	by	IN
40119	253	38	myself	-PRON-	PRP
40119	253	39	is	be	VBZ
40119	253	40	2	2	CD
40119	253	41	-	-	SYM
40119	253	42	3/4	3/4	CD
40119	253	43	inches	inch	NNS
40119	253	44	,	,	,
40119	253	45	and	and	CC
40119	253	46	its	-PRON-	PRP$
40119	253	47	focal	focal	JJ
40119	253	48	length	length	NN
40119	253	49	6	6	CD
40119	253	50	-	-	HYPH
40119	253	51	1/2	1/2	CD
40119	253	52	inches	inch	NNS
40119	253	53	.	.	.
40119	254	1	When	when	WRB
40119	254	2	we	-PRON-	PRP
40119	254	3	have	have	VBP
40119	254	4	once	once	RB
40119	254	5	found	find	VBN
40119	254	6	by	by	IN
40119	254	7	trial	trial	NN
40119	254	8	the	the	DT
40119	254	9	position	position	NN
40119	254	10	in	in	IN
40119	254	11	which	which	WDT
40119	254	12	this	this	DT
40119	254	13	supplementary	supplementary	JJ
40119	254	14	lens	lens	NN
40119	254	15	gives	give	VBZ
40119	254	16	the	the	DT
40119	254	17	clearest	clear	JJS
40119	254	18	image[4	image[4	NNP
40119	254	19	]	]	-RRB-
40119	254	20	it	-PRON-	PRP
40119	254	21	is	be	VBZ
40119	254	22	easy	easy	JJ
40119	254	23	to	to	TO
40119	254	24	arrange	arrange	VB
40119	254	25	a	a	DT
40119	254	26	contrivance	contrivance	NN
40119	254	27	for	for	IN
40119	254	28	removing	remove	VBG
40119	254	29	and	and	CC
40119	254	30	replacing	replace	VBG
40119	254	31	it	-PRON-	PRP
40119	254	32	correctly	correctly	RB
40119	254	33	without	without	IN
40119	254	34	need	need	NN
40119	254	35	of	of	IN
40119	254	36	any	any	DT
40119	254	37	further	further	JJ
40119	254	38	adjustment	adjustment	NN
40119	254	39	.	.	.
40119	255	1	This	this	DT
40119	255	2	apparatus	apparatus	NN
40119	255	3	shows	show	VBZ
40119	255	4	then	then	RB
40119	255	5	that	that	DT
40119	255	6	ordinary	ordinary	JJ
40119	255	7	white	white	JJ
40119	255	8	light	light	NN
40119	255	9	may	may	MD
40119	255	10	be	be	VB
40119	255	11	regarded	regard	VBN
40119	255	12	as	as	IN
40119	255	13	a	a	DT
40119	255	14	mixture	mixture	NN
40119	255	15	of	of	IN
40119	255	16	all	all	PDT
40119	255	17	the	the	DT
40119	255	18	variously	variously	RB
40119	255	19	coloured	colour	VBN
40119	255	20	lights	light	NNS
40119	255	21	which	which	WDT
40119	255	22	occur	occur	VBP
40119	255	23	in	in	IN
40119	255	24	the	the	DT
40119	255	25	spectrum	spectrum	NN
40119	255	26	,	,	,
40119	255	27	the	the	DT
40119	255	28	sensation	sensation	NN
40119	255	29	produced	produce	VBD
40119	255	30	when	when	WRB
40119	255	31	it	-PRON-	PRP
40119	255	32	falls	fall	VBZ
40119	255	33	upon	upon	IN
40119	255	34	the	the	DT
40119	255	35	eye	eye	NN
40119	255	36	being	be	VBG
40119	255	37	consequently	consequently	RB
40119	255	38	a	a	DT
40119	255	39	compound	compound	NN
40119	255	40	one	one	CD
40119	255	41	.	.	.
40119	256	1	From	from	IN
40119	256	2	these	these	DT
40119	256	3	and	and	CC
40119	256	4	similar	similar	JJ
40119	256	5	experiments	experiment	NNS
40119	256	6	the	the	DT
40119	256	7	scientific	scientific	JJ
40119	256	8	neophyte	neophyte	NN
40119	256	9	is	be	VBZ
40119	256	10	not	not	RB
40119	256	11	unlikely	unlikely	JJ
40119	256	12	to	to	TO
40119	256	13	draw	draw	VB
40119	256	14	an	an	DT
40119	256	15	erroneous	erroneous	JJ
40119	256	16	conclusion	conclusion	NN
40119	256	17	.	.	.
40119	257	1	White	white	JJ
40119	257	2	light	light	NN
40119	257	3	,	,	,
40119	257	4	he	-PRON-	PRP
40119	257	5	is	be	VBZ
40119	257	6	apt	apt	JJ
40119	257	7	to	to	TO
40119	257	8	think	think	VB
40119	257	9	,	,	,
40119	257	10	is	be	VBZ
40119	257	11	_	_	NNP
40119	257	12	always	always	RB
40119	257	13	_	_	NNP
40119	257	14	due	due	IN
40119	257	15	to	to	IN
40119	257	16	the	the	DT
40119	257	17	combined	combine	VBN
40119	257	18	action	action	NN
40119	257	19	of	of	IN
40119	257	20	rays	ray	NNS
40119	257	21	of	of	IN
40119	257	22	every	every	DT
40119	257	23	possible	possible	JJ
40119	257	24	wave	wave	NN
40119	257	25	-	-	HYPH
40119	257	26	length	length	NN
40119	257	27	,	,	,
40119	257	28	while	while	IN
40119	257	29	coloured	coloured	JJ
40119	257	30	light	light	NN
40119	257	31	consists	consist	VBZ
40119	257	32	of	of	IN
40119	257	33	rays	ray	NNS
40119	257	34	of	of	IN
40119	257	35	one	one	CD
40119	257	36	definite	definite	JJ
40119	257	37	wave	wave	NN
40119	257	38	-	-	HYPH
40119	257	39	length	length	NN
40119	257	40	only	only	RB
40119	257	41	.	.	.
40119	258	1	Neither	neither	DT
40119	258	2	of	of	IN
40119	258	3	these	these	DT
40119	258	4	inferences	inference	NNS
40119	258	5	would	would	MD
40119	258	6	be	be	VB
40119	258	7	correct	correct	JJ
40119	258	8	.	.	.
40119	259	1	It	-PRON-	PRP
40119	259	2	is	be	VBZ
40119	259	3	not	not	RB
40119	259	4	true	true	JJ
40119	259	5	that	that	IN
40119	259	6	white	white	JJ
40119	259	7	light	light	NN
40119	259	8	necessarily	necessarily	RB
40119	259	9	contains	contain	VBZ
40119	259	10	rays	ray	NNS
40119	259	11	of	of	IN
40119	259	12	all	all	DT
40119	259	13	possible	possible	JJ
40119	259	14	wave	wave	NN
40119	259	15	-	-	HYPH
40119	259	16	lengths	length	NNS
40119	259	17	:	:	:
40119	259	18	the	the	DT
40119	259	19	sensation	sensation	NN
40119	259	20	of	of	IN
40119	259	21	whiteness	whiteness	NN
40119	259	22	may	may	MD
40119	259	23	,	,	,
40119	259	24	as	as	IN
40119	259	25	will	will	MD
40119	259	26	be	be	VB
40119	259	27	shown	show	VBN
40119	259	28	by	by	IN
40119	259	29	and	and	CC
40119	259	30	bye	bye	UH
40119	259	31	,	,	,
40119	259	32	be	be	VB
40119	259	33	produced	produce	VBN
40119	259	34	quite	quite	RB
40119	259	35	as	as	RB
40119	259	36	effectively	effectively	RB
40119	259	37	by	by	IN
40119	259	38	the	the	DT
40119	259	39	combination	combination	NN
40119	259	40	of	of	IN
40119	259	41	only	only	RB
40119	259	42	two	two	CD
40119	259	43	or	or	CC
40119	259	44	three	three	CD
40119	259	45	different	different	JJ
40119	259	46	wave	wave	NN
40119	259	47	-	-	HYPH
40119	259	48	lengths	length	NNS
40119	259	49	.	.	.
40119	260	1	Nor	nor	CC
40119	260	2	is	be	VBZ
40119	260	3	it	-PRON-	PRP
40119	260	4	true	true	JJ
40119	260	5	that	that	IN
40119	260	6	such	such	JJ
40119	260	7	colours	colour	NNS
40119	260	8	as	as	IN
40119	260	9	we	-PRON-	PRP
40119	260	10	see	see	VBP
40119	260	11	in	in	IN
40119	260	12	nature	nature	NN
40119	260	13	are	be	VBP
40119	260	14	always	always	RB
40119	260	15	due	due	JJ
40119	260	16	to	to	IN
40119	260	17	light	light	NN
40119	260	18	of	of	IN
40119	260	19	a	a	DT
40119	260	20	single	single	JJ
40119	260	21	wave	wave	NN
40119	260	22	-	-	HYPH
40119	260	23	length	length	NN
40119	260	24	;	;	:
40119	260	25	light	light	NN
40119	260	26	of	of	IN
40119	260	27	this	this	DT
40119	260	28	kind	kind	NN
40119	260	29	is	be	VBZ
40119	260	30	indeed	indeed	RB
40119	260	31	rarely	rarely	RB
40119	260	32	met	meet	VBN
40119	260	33	with	with	IN
40119	260	34	outside	outside	JJ
40119	260	35	laboratories	laboratory	NNS
40119	260	36	and	and	CC
40119	260	37	lecture	lecture	NN
40119	260	38	rooms	room	NNS
40119	260	39	.	.	.
40119	261	1	Far	far	RB
40119	261	2	more	more	RBR
40119	261	3	commonly	commonly	RB
40119	261	4	coloured	coloured	JJ
40119	261	5	light	light	NN
40119	261	6	consists	consist	VBZ
40119	261	7	of	of	IN
40119	261	8	mixed	mixed	JJ
40119	261	9	rays	ray	NNS
40119	261	10	,	,	,
40119	261	11	and	and	CC
40119	261	12	like	like	IN
40119	261	13	ordinary	ordinary	JJ
40119	261	14	white	white	JJ
40119	261	15	light	light	NN
40119	261	16	,	,	,
40119	261	17	it	-PRON-	PRP
40119	261	18	may	may	MD
40119	261	19	,	,	,
40119	261	20	and	and	CC
40119	261	21	generally	generally	RB
40119	261	22	does	do	VBZ
40119	261	23	,	,	,
40119	261	24	contain	contain	VB
40119	261	25	all	all	PDT
40119	261	26	the	the	DT
40119	261	27	colours	colour	NNS
40119	261	28	of	of	IN
40119	261	29	the	the	DT
40119	261	30	spectrum	spectrum	NN
40119	261	31	,	,	,
40119	261	32	but	but	CC
40119	261	33	in	in	IN
40119	261	34	different	different	JJ
40119	261	35	proportions	proportion	NNS
40119	261	36	.	.	.
40119	262	1	This	this	DT
40119	262	2	last	last	JJ
40119	262	3	assertion	assertion	NN
40119	262	4	is	be	VBZ
40119	262	5	easily	easily	RB
40119	262	6	proved	prove	VBN
40119	262	7	.	.	.
40119	263	1	By	by	IN
40119	263	2	means	mean	NNS
40119	263	3	of	of	IN
40119	263	4	a	a	DT
40119	263	5	slip	slip	NN
40119	263	6	of	of	IN
40119	263	7	card	card	NN
40119	263	8	we	-PRON-	PRP
40119	263	9	may	may	MD
40119	263	10	intercept	intercept	VB
40119	263	11	a	a	DT
40119	263	12	portion	portion	NN
40119	263	13	of	of	IN
40119	263	14	the	the	DT
40119	263	15	little	little	JJ
40119	263	16	spectrum	spectrum	NN
40119	263	17	formed	form	VBN
40119	263	18	at	at	IN
40119	263	19	H	h	NN
40119	263	20	(	(	-LRB-
40119	263	21	Fig	fig	NN
40119	263	22	.	.	.
40119	264	1	3	3	LS
40119	264	2	)	)	-RRB-
40119	264	3	.	.	.
40119	265	1	The	the	DT
40119	265	2	dark	dark	JJ
40119	265	3	shadow	shadow	NN
40119	265	4	of	of	IN
40119	265	5	the	the	DT
40119	265	6	card	card	NN
40119	265	7	in	in	IN
40119	265	8	the	the	DT
40119	265	9	enlarged	enlarged	JJ
40119	265	10	spectrum	spectrum	NN
40119	265	11	on	on	IN
40119	265	12	the	the	DT
40119	265	13	screen	screen	NN
40119	265	14	is	be	VBZ
40119	265	15	shown	show	VBN
40119	265	16	in	in	IN
40119	265	17	Fig	Fig	NNP
40119	265	18	.	.	.
40119	266	1	4	4	LS
40119	266	2	.	.	.
40119	267	1	It	-PRON-	PRP
40119	267	2	will	will	MD
40119	267	3	be	be	VB
40119	267	4	noticed	notice	VBN
40119	267	5	that	that	IN
40119	267	6	the	the	DT
40119	267	7	shadow	shadow	NN
40119	267	8	cuts	cut	VBZ
40119	267	9	off	off	RP
40119	267	10	a	a	DT
40119	267	11	part	part	NN
40119	267	12	only	only	RB
40119	267	13	of	of	IN
40119	267	14	the	the	DT
40119	267	15	red	red	JJ
40119	267	16	,	,	,
40119	267	17	orange	orange	JJ
40119	267	18	,	,	,
40119	267	19	and	and	CC
40119	267	20	yellow	yellow	JJ
40119	267	21	light	light	NN
40119	267	22	,	,	,
40119	267	23	allowing	allow	VBG
40119	267	24	the	the	DT
40119	267	25	remainder	remainder	NN
40119	267	26	to	to	TO
40119	267	27	pass	pass	VB
40119	267	28	through	through	IN
40119	267	29	the	the	DT
40119	267	30	projection	projection	NN
40119	267	31	lenses	lense	NNS
40119	267	32	.	.	.
40119	268	1	There	there	EX
40119	268	2	are	be	VBP
40119	268	3	still	still	RB
40119	268	4	rays	ray	NNS
40119	268	5	of	of	IN
40119	268	6	every	every	DT
40119	268	7	possible	possible	JJ
40119	268	8	wave	wave	NN
40119	268	9	-	-	HYPH
40119	268	10	length	length	NN
40119	268	11	from	from	IN
40119	268	12	extreme	extreme	JJ
40119	268	13	red	red	NN
40119	268	14	to	to	IN
40119	268	15	extreme	extreme	JJ
40119	268	16	violet	violet	NN
40119	268	17	,	,	,
40119	268	18	but	but	CC
40119	268	19	the	the	DT
40119	268	20	proportion	proportion	NN
40119	268	21	of	of	IN
40119	268	22	those	those	DT
40119	268	23	towards	towards	IN
40119	268	24	the	the	DT
40119	268	25	red	red	JJ
40119	268	26	end	end	NN
40119	268	27	is	be	VBZ
40119	268	28	less	less	JJR
40119	268	29	than	than	IN
40119	268	30	it	-PRON-	PRP
40119	268	31	was	be	VBD
40119	268	32	before	before	IN
40119	268	33	the	the	DT
40119	268	34	card	card	NN
40119	268	35	was	be	VBD
40119	268	36	interposed	interpose	VBN
40119	268	37	.	.	.
40119	269	1	[	[	-LRB-
40119	269	2	Illustration	illustration	NN
40119	269	3	:	:	:
40119	269	4	_	_	NNP
40119	269	5	Fig	Fig	NNP
40119	269	6	.	.	.
40119	270	1	4.--Partially	4.--partially	CD
40119	270	2	intercepted	intercept	VBD
40119	270	3	Spectrum	Spectrum	NNP
40119	270	4	.	.	.
40119	270	5	_	_	NNP
40119	270	6	]	]	-RRB-
40119	270	7	If	if	IN
40119	270	8	now	now	RB
40119	270	9	we	-PRON-	PRP
40119	270	10	remove	remove	VBP
40119	270	11	the	the	DT
40119	270	12	lens	lens	NN
40119	270	13	I	-PRON-	PRP
40119	270	14	(	(	-LRB-
40119	270	15	Fig	fig	NN
40119	270	16	.	.	.
40119	271	1	3	3	LS
40119	271	2	)	)	-RRB-
40119	271	3	and	and	CC
40119	271	4	so	so	RB
40119	271	5	mix	mix	VB
40119	271	6	the	the	DT
40119	271	7	colours	colour	NNS
40119	271	8	of	of	IN
40119	271	9	this	this	DT
40119	271	10	mutilated	mutilate	VBN
40119	271	11	spectrum	spectrum	NN
40119	271	12	,	,	,
40119	271	13	the	the	DT
40119	271	14	bright	bright	JJ
40119	271	15	round	round	JJ
40119	271	16	patch	patch	NN
40119	271	17	where	where	WRB
40119	271	18	the	the	DT
40119	271	19	mixed	mix	VBN
40119	271	20	rays	ray	NNS
40119	271	21	fall	fall	VBP
40119	271	22	upon	upon	IN
40119	271	23	the	the	DT
40119	271	24	screen	screen	NN
40119	271	25	will	will	MD
40119	271	26	no	no	RB
40119	271	27	longer	longer	RB
40119	271	28	appear	appear	VB
40119	271	29	white	white	JJ
40119	271	30	but	but	CC
40119	271	31	greenish	greenish	NN
40119	271	32	-	-	HYPH
40119	271	33	blue	blue	JJ
40119	271	34	.	.	.
40119	272	1	If	if	IN
40119	272	2	we	-PRON-	PRP
40119	272	3	transfer	transfer	VBP
40119	272	4	the	the	DT
40119	272	5	card	card	NN
40119	272	6	to	to	IN
40119	272	7	the	the	DT
40119	272	8	other	other	JJ
40119	272	9	end	end	NN
40119	272	10	of	of	IN
40119	272	11	the	the	DT
40119	272	12	little	little	JJ
40119	272	13	spectrum	spectrum	NN
40119	272	14	,	,	,
40119	272	15	so	so	IN
40119	272	16	as	as	IN
40119	272	17	to	to	TO
40119	272	18	cause	cause	VB
40119	272	19	a	a	DT
40119	272	20	partial	partial	JJ
40119	272	21	eclipse	eclipse	NN
40119	272	22	of	of	IN
40119	272	23	the	the	DT
40119	272	24	violet	violet	NN
40119	272	25	,	,	,
40119	272	26	blue	blue	NNP
40119	272	27	,	,	,
40119	272	28	and	and	CC
40119	272	29	green	green	JJ
40119	272	30	rays	ray	NNS
40119	272	31	,	,	,
40119	272	32	the	the	DT
40119	272	33	colour	colour	NN
40119	272	34	of	of	IN
40119	272	35	the	the	DT
40119	272	36	patch	patch	NN
40119	272	37	will	will	MD
40119	272	38	be	be	VB
40119	272	39	changed	change	VBN
40119	272	40	to	to	TO
40119	272	41	orange	orange	VB
40119	272	42	.	.	.
40119	273	1	If	if	IN
40119	273	2	we	-PRON-	PRP
40119	273	3	remove	remove	VBP
40119	273	4	the	the	DT
40119	273	5	card	card	NN
40119	273	6	altogether	altogether	RB
40119	273	7	,	,	,
40119	273	8	the	the	DT
40119	273	9	patch	patch	NN
40119	273	10	will	will	MD
40119	273	11	once	once	RB
40119	273	12	more	more	RBR
40119	273	13	become	become	VB
40119	273	14	white	white	JJ
40119	273	15	.	.	.
40119	274	1	It	-PRON-	PRP
40119	274	2	follows	follow	VBZ
40119	274	3	_	_	IN
40119	274	4	a	a	DT
40119	274	5	fortiori	fortiori	NN
40119	274	6	_	_	NNP
40119	274	7	that	that	IN
40119	274	8	when	when	WRB
40119	274	9	any	any	DT
40119	274	10	portion	portion	NN
40119	274	11	of	of	IN
40119	274	12	the	the	DT
40119	274	13	little	little	JJ
40119	274	14	spectrum	spectrum	NN
40119	274	15	is	be	VBZ
40119	274	16	eclipsed	eclipse	VBN
40119	274	17	totally	totally	RB
40119	274	18	,	,	,
40119	274	19	instead	instead	RB
40119	274	20	of	of	IN
40119	274	21	only	only	RB
40119	274	22	partially	partially	RB
40119	274	23	,	,	,
40119	274	24	the	the	DT
40119	274	25	light	light	NN
40119	274	26	from	from	IN
40119	274	27	the	the	DT
40119	274	28	remainder	remainder	NN
40119	274	29	will	will	MD
40119	274	30	appear	appear	VB
40119	274	31	,	,	,
40119	274	32	when	when	WRB
40119	274	33	combined	combine	VBN
40119	274	34	,	,	,
40119	274	35	to	to	TO
40119	274	36	be	be	VB
40119	274	37	coloured	colour	VBN
40119	274	38	.	.	.
40119	275	1	Very	very	RB
40119	275	2	beautiful	beautiful	JJ
40119	275	3	changes	change	NNS
40119	275	4	of	of	IN
40119	275	5	hue	hue	NNP
40119	275	6	are	be	VBP
40119	275	7	exhibited	exhibit	VBN
40119	275	8	by	by	IN
40119	275	9	the	the	DT
40119	275	10	bright	bright	JJ
40119	275	11	patch	patch	NN
40119	275	12	when	when	WRB
40119	275	13	a	a	DT
40119	275	14	narrow	narrow	JJ
40119	275	15	opaque	opaque	JJ
40119	275	16	strip	strip	NN
40119	275	17	,	,	,
40119	275	18	such	such	JJ
40119	275	19	as	as	IN
40119	275	20	the	the	DT
40119	275	21	small	small	JJ
40119	275	22	blade	blade	NN
40119	275	23	of	of	IN
40119	275	24	a	a	DT
40119	275	25	pocket	pocket	NN
40119	275	26	knife	knife	NN
40119	275	27	,	,	,
40119	275	28	is	be	VBZ
40119	275	29	slowly	slowly	RB
40119	275	30	moved	move	VBN
40119	275	31	along	along	IN
40119	275	32	the	the	DT
40119	275	33	little	little	JJ
40119	275	34	spectrum	spectrum	NN
40119	275	35	at	at	IN
40119	275	36	H	h	NN
40119	275	37	,	,	,
40119	275	38	eclipsing	eclipse	VBG
40119	275	39	different	different	JJ
40119	275	40	portions	portion	NNS
40119	275	41	of	of	IN
40119	275	42	it	-PRON-	PRP
40119	275	43	in	in	IN
40119	275	44	succession	succession	NN
40119	275	45	.	.	.
40119	276	1	The	the	DT
40119	276	2	patch	patch	NN
40119	276	3	first	first	RB
40119	276	4	becomes	become	VBZ
40119	276	5	green	green	JJ
40119	276	6	,	,	,
40119	276	7	then	then	RB
40119	276	8	by	by	IN
40119	276	9	imperceptible	imperceptible	JJ
40119	276	10	gradations	gradation	NNS
40119	276	11	it	-PRON-	PRP
40119	276	12	changes	change	VBZ
40119	276	13	successively	successively	RB
40119	276	14	to	to	IN
40119	276	15	blue	blue	JJ
40119	276	16	,	,	,
40119	276	17	purple	purple	JJ
40119	276	18	,	,	,
40119	276	19	scarlet	scarlet	JJ
40119	276	20	,	,	,
40119	276	21	orange	orange	JJ
40119	276	22	,	,	,
40119	276	23	yellow	yellow	JJ
40119	276	24	,	,	,
40119	276	25	and	and	CC
40119	276	26	finally	finally	RB
40119	276	27	,	,	,
40119	276	28	when	when	WRB
40119	276	29	the	the	DT
40119	276	30	knife	knife	NN
40119	276	31	has	have	VBZ
40119	276	32	completed	complete	VBN
40119	276	33	its	-PRON-	PRP$
40119	276	34	course	course	NN
40119	276	35	,	,	,
40119	276	36	all	all	DT
40119	276	37	colour	colour	NN
40119	276	38	disappears	disappear	NNS
40119	276	39	and	and	CC
40119	276	40	the	the	DT
40119	276	41	patch	patch	NN
40119	276	42	is	be	VBZ
40119	276	43	again	again	RB
40119	276	44	white	white	JJ
40119	276	45	.	.	.
40119	277	1	We	-PRON-	PRP
40119	277	2	may	may	MD
40119	277	3	improve	improve	VB
40119	277	4	upon	upon	IN
40119	277	5	this	this	DT
40119	277	6	crude	crude	JJ
40119	277	7	experiment	experiment	NN
40119	277	8	,	,	,
40119	277	9	and	and	CC
40119	277	10	,	,	,
40119	277	11	after	after	IN
40119	277	12	Captain	Captain	NNP
40119	277	13	Abney	Abney	NNP
40119	277	14	's	's	POS
40119	277	15	plan	plan	NN
40119	277	16	,	,	,
40119	277	17	prepare	prepare	VB
40119	277	18	a	a	DT
40119	277	19	number	number	NN
40119	277	20	of	of	IN
40119	277	21	small	small	JJ
40119	277	22	cardboard	cardboard	NN
40119	277	23	stencils	stencil	NNS
40119	277	24	,	,	,
40119	277	25	with	with	IN
40119	277	26	openings	opening	NNS
40119	277	27	corresponding	correspond	VBG
40119	277	28	to	to	IN
40119	277	29	any	any	DT
40119	277	30	selected	select	VBN
40119	277	31	parts	part	NNS
40119	277	32	of	of	IN
40119	277	33	the	the	DT
40119	277	34	little	little	JJ
40119	277	35	spectrum	spectrum	NN
40119	277	36	.	.	.
40119	278	1	When	when	WRB
40119	278	2	a	a	DT
40119	278	3	card	card	NN
40119	278	4	so	so	RB
40119	278	5	prepared	prepared	JJ
40119	278	6	is	be	VBZ
40119	278	7	placed	place	VBN
40119	278	8	at	at	IN
40119	278	9	H	h	NN
40119	278	10	(	(	-LRB-
40119	278	11	Fig	fig	NN
40119	278	12	.	.	.
40119	279	1	3	3	LS
40119	279	2	)	)	-RRB-
40119	279	3	the	the	DT
40119	279	4	bright	bright	JJ
40119	279	5	patch	patch	NN
40119	279	6	upon	upon	IN
40119	279	7	the	the	DT
40119	279	8	screen	screen	NN
40119	279	9	is	be	VBZ
40119	279	10	formed	form	VBN
40119	279	11	by	by	IN
40119	279	12	the	the	DT
40119	279	13	combination	combination	NN
40119	279	14	of	of	IN
40119	279	15	the	the	DT
40119	279	16	selected	select	VBN
40119	279	17	rays	ray	NNS
40119	279	18	,	,	,
40119	279	19	all	all	PDT
40119	279	20	the	the	DT
40119	279	21	others	other	NNS
40119	279	22	being	be	VBG
40119	279	23	quenched	quench	VBN
40119	279	24	.	.	.
40119	280	1	We	-PRON-	PRP
40119	280	2	shall	shall	MD
40119	280	3	find	find	VB
40119	280	4	that	that	IN
40119	280	5	under	under	IN
40119	280	6	these	these	DT
40119	280	7	conditions	condition	NNS
40119	280	8	the	the	DT
40119	280	9	bright	bright	JJ
40119	280	10	patch	patch	NN
40119	280	11	is	be	VBZ
40119	280	12	generally	generally	RB
40119	280	13	,	,	,
40119	280	14	but	but	CC
40119	280	15	not	not	RB
40119	280	16	always	always	RB
40119	280	17	,	,	,
40119	280	18	coloured	colour	VBN
40119	280	19	.	.	.
40119	281	1	[	[	-LRB-
40119	281	2	Illustration	illustration	NN
40119	281	3	:	:	:
40119	281	4	_	_	NNP
40119	281	5	Fig	Fig	NNP
40119	281	6	.	.	.
40119	282	1	5.--Stencil	5.--stencil	CD
40119	282	2	Cards	Cards	NNPS
40119	282	3	.	.	.
40119	282	4	_	_	NNP
40119	282	5	]	]	-RRB-
40119	282	6	The	the	DT
40119	282	7	first	first	JJ
40119	282	8	diagram	diagram	NN
40119	282	9	in	in	IN
40119	282	10	Fig	Fig	NNP
40119	282	11	.	.	.
40119	283	1	5	5	CD
40119	283	2	represents	represent	VBZ
40119	283	3	a	a	DT
40119	283	4	blackened	blacken	VBN
40119	283	5	card	card	NN
40119	283	6	,	,	,
40119	283	7	which	which	WDT
40119	283	8	allows	allow	VBZ
40119	283	9	only	only	RB
40119	283	10	the	the	DT
40119	283	11	red	red	NN
40119	283	12	and	and	CC
40119	283	13	a	a	DT
40119	283	14	little	little	JJ
40119	283	15	of	of	IN
40119	283	16	the	the	DT
40119	283	17	orange	orange	NN
40119	283	18	to	to	TO
40119	283	19	pass	pass	VB
40119	283	20	through	through	RB
40119	283	21	.	.	.
40119	284	1	When	when	WRB
40119	284	2	this	this	DT
40119	284	3	is	be	VBZ
40119	284	4	inserted	insert	VBN
40119	284	5	in	in	IN
40119	284	6	the	the	DT
40119	284	7	grooved	grooved	JJ
40119	284	8	holder	holder	NN
40119	284	9	at	at	IN
40119	284	10	H	h	NN
40119	284	11	,	,	,
40119	284	12	the	the	DT
40119	284	13	bright	bright	JJ
40119	284	14	patch	patch	NN
40119	284	15	immediately	immediately	RB
40119	284	16	turns	turn	VBZ
40119	284	17	red	red	JJ
40119	284	18	.	.	.
40119	285	1	The	the	DT
40119	285	2	second	second	JJ
40119	285	3	diagram	diagram	NN
40119	285	4	shows	show	VBZ
40119	285	5	another	another	DT
40119	285	6	,	,	,
40119	285	7	which	which	WDT
40119	285	8	transmits	transmit	VBZ
40119	285	9	the	the	DT
40119	285	10	middle	middle	JJ
40119	285	11	portion	portion	NN
40119	285	12	of	of	IN
40119	285	13	the	the	DT
40119	285	14	spectrum	spectrum	NN
40119	285	15	,	,	,
40119	285	16	but	but	CC
40119	285	17	blocks	block	VBZ
40119	285	18	the	the	DT
40119	285	19	red	red	NN
40119	285	20	and	and	CC
40119	285	21	the	the	DT
40119	285	22	violet	violet	NN
40119	285	23	at	at	IN
40119	285	24	its	-PRON-	PRP$
40119	285	25	two	two	CD
40119	285	26	ends	end	NNS
40119	285	27	:	:	:
40119	285	28	with	with	IN
40119	285	29	this	this	DT
40119	285	30	card	card	NN
40119	285	31	the	the	DT
40119	285	32	colour	colour	NN
40119	285	33	of	of	IN
40119	285	34	the	the	DT
40119	285	35	patch	patch	NN
40119	285	36	becomes	become	VBZ
40119	285	37	green	green	JJ
40119	285	38	.	.	.
40119	286	1	The	the	DT
40119	286	2	third	third	JJ
40119	286	3	card	card	NN
40119	286	4	has	have	VBZ
40119	286	5	openings	opening	NNS
40119	286	6	for	for	IN
40119	286	7	the	the	DT
40119	286	8	violet	violet	NN
40119	286	9	and	and	CC
40119	286	10	the	the	DT
40119	286	11	red	red	JJ
40119	286	12	rays	ray	NNS
40119	286	13	:	:	:
40119	286	14	this	this	DT
40119	286	15	turns	turn	VBZ
40119	286	16	the	the	DT
40119	286	17	patch	patch	NN
40119	286	18	a	a	DT
40119	286	19	beautiful	beautiful	JJ
40119	286	20	purple	purple	NN
40119	286	21	,	,	,
40119	286	22	a	a	DT
40119	286	23	hue	hue	NN
40119	286	24	which	which	WDT
40119	286	25	,	,	,
40119	286	26	as	as	IN
40119	286	27	already	already	RB
40119	286	28	mentioned	mention	VBN
40119	286	29	,	,	,
40119	286	30	is	be	VBZ
40119	286	31	not	not	RB
40119	286	32	produced	produce	VBN
40119	286	33	by	by	IN
40119	286	34	light	light	NN
40119	286	35	of	of	IN
40119	286	36	any	any	DT
40119	286	37	single	single	JJ
40119	286	38	wave	wave	NN
40119	286	39	-	-	HYPH
40119	286	40	length	length	NN
40119	286	41	.	.	.
40119	287	1	The	the	DT
40119	287	2	purples	purple	NNS
40119	287	3	are	be	VBP
40119	287	4	mixtures	mixture	NNS
40119	287	5	of	of	IN
40119	287	6	red	red	JJ
40119	287	7	and	and	CC
40119	287	8	violet	violet	NN
40119	287	9	or	or	CC
40119	287	10	of	of	IN
40119	287	11	red	red	JJ
40119	287	12	and	and	CC
40119	287	13	blue	blue	JJ
40119	287	14	.	.	.
40119	288	1	Now	now	RB
40119	288	2	I	-PRON-	PRP
40119	288	3	have	have	VBP
40119	288	4	in	in	IN
40119	288	5	my	-PRON-	PRP$
40119	288	6	possession	possession	NN
40119	288	7	three	three	CD
40119	288	8	pieces	piece	NNS
40119	288	9	of	of	IN
40119	288	10	glass	glass	NN
40119	288	11	(	(	-LRB-
40119	288	12	or	or	CC
40119	288	13	,	,	,
40119	288	14	to	to	TO
40119	288	15	be	be	VB
40119	288	16	strictly	strictly	RB
40119	288	17	accurate	accurate	JJ
40119	288	18	,	,	,
40119	288	19	two	two	CD
40119	288	20	pieces	piece	NNS
40119	288	21	of	of	IN
40119	288	22	glass	glass	NN
40119	288	23	and	and	CC
40119	288	24	one	one	CD
40119	288	25	glass	glass	NN
40119	288	26	-	-	HYPH
40119	288	27	mounted	mount	VBN
40119	288	28	gelatine	gelatine	NN
40119	288	29	film	film	NN
40119	288	30	)	)	-RRB-
40119	288	31	which	which	WDT
40119	288	32	,	,	,
40119	288	33	when	when	WRB
40119	288	34	placed	place	VBN
40119	288	35	transversely	transversely	RB
40119	288	36	in	in	IN
40119	288	37	the	the	DT
40119	288	38	beam	beam	NN
40119	288	39	of	of	IN
40119	288	40	light	light	NN
40119	288	41	,	,	,
40119	288	42	either	either	CC
40119	288	43	at	at	IN
40119	288	44	H	h	NN
40119	288	45	(	(	-LRB-
40119	288	46	Fig	fig	NN
40119	288	47	.	.	.
40119	289	1	3	3	LS
40119	289	2	)	)	-RRB-
40119	289	3	or	or	CC
40119	289	4	anywhere	anywhere	RB
40119	289	5	else	else	RB
40119	289	6	,	,	,
40119	289	7	behave	behave	VB
40119	289	8	exactly	exactly	RB
40119	289	9	like	like	IN
40119	289	10	these	these	DT
40119	289	11	three	three	CD
40119	289	12	cardboard	cardboard	NN
40119	289	13	stencils	stencil	NNS
40119	289	14	.	.	.
40119	290	1	The	the	DT
40119	290	2	first	first	JJ
40119	290	3	glass	glass	NN
40119	290	4	cuts	cut	VBZ
40119	290	5	off	off	RP
40119	290	6	all	all	PDT
40119	290	7	the	the	DT
40119	290	8	spectrum	spectrum	NN
40119	290	9	except	except	IN
40119	290	10	the	the	DT
40119	290	11	red	red	NN
40119	290	12	and	and	CC
40119	290	13	part	part	NN
40119	290	14	of	of	IN
40119	290	15	the	the	DT
40119	290	16	orange	orange	NN
40119	290	17	,	,	,
40119	290	18	just	just	RB
40119	290	19	as	as	IN
40119	290	20	the	the	DT
40119	290	21	first	first	JJ
40119	290	22	stencil	stencil	NN
40119	290	23	does	do	VBZ
40119	290	24	,	,	,
40119	290	25	though	though	IN
40119	290	26	the	the	DT
40119	290	27	line	line	NN
40119	290	28	of	of	IN
40119	290	29	demarcation	demarcation	NN
40119	290	30	is	be	VBZ
40119	290	31	not	not	RB
40119	290	32	quite	quite	RB
40119	290	33	so	so	RB
40119	290	34	sharp	sharp	JJ
40119	290	35	.	.	.
40119	291	1	This	this	DT
40119	291	2	is	be	VBZ
40119	291	3	in	in	IN
40119	291	4	fact	fact	NN
40119	291	5	a	a	DT
40119	291	6	piece	piece	NN
40119	291	7	of	of	IN
40119	291	8	red	red	JJ
40119	291	9	glass	glass	NN
40119	291	10	,	,	,
40119	291	11	or	or	CC
40119	291	12	in	in	IN
40119	291	13	other	other	JJ
40119	291	14	words	word	NNS
40119	291	15	the	the	DT
40119	291	16	light	light	NN
40119	291	17	that	that	WDT
40119	291	18	it	-PRON-	PRP
40119	291	19	transmits	transmit	VBZ
40119	291	20	produces	produce	VBZ
40119	291	21	the	the	DT
40119	291	22	sensation	sensation	NN
40119	291	23	of	of	IN
40119	291	24	red	red	NN
40119	291	25	.	.	.
40119	292	1	The	the	DT
40119	292	2	second	second	JJ
40119	292	3	glass	glass	NN
40119	292	4	,	,	,
40119	292	5	like	like	IN
40119	292	6	the	the	DT
40119	292	7	second	second	JJ
40119	292	8	stencil	stencil	NN
40119	292	9	,	,	,
40119	292	10	allows	allow	VBZ
40119	292	11	the	the	DT
40119	292	12	whole	whole	NN
40119	292	13	of	of	IN
40119	292	14	the	the	DT
40119	292	15	spectral	spectral	JJ
40119	292	16	rays	ray	NNS
40119	292	17	to	to	TO
40119	292	18	pass	pass	VB
40119	292	19	freely	freely	RB
40119	292	20	except	except	IN
40119	292	21	the	the	DT
40119	292	22	red	red	NN
40119	292	23	and	and	CC
40119	292	24	the	the	DT
40119	292	25	violet	violet	NN
40119	292	26	,	,	,
40119	292	27	which	which	WDT
40119	292	28	disappear	disappear	VBP
40119	292	29	as	as	IN
40119	292	30	if	if	IN
40119	292	31	they	-PRON-	PRP
40119	292	32	were	be	VBD
40119	292	33	obstructed	obstruct	VBN
40119	292	34	by	by	IN
40119	292	35	an	an	DT
40119	292	36	opaque	opaque	JJ
40119	292	37	body	body	NN
40119	292	38	.	.	.
40119	293	1	This	this	DT
40119	293	2	is	be	VBZ
40119	293	3	a	a	DT
40119	293	4	green	green	JJ
40119	293	5	glass	glass	NN
40119	293	6	.	.	.
40119	294	1	And	and	CC
40119	294	2	the	the	DT
40119	294	3	third	third	JJ
40119	294	4	(	(	-LRB-
40119	294	5	which	which	WDT
40119	294	6	is	be	VBZ
40119	294	7	really	really	RB
40119	294	8	a	a	DT
40119	294	9	film	film	NN
40119	294	10	of	of	IN
40119	294	11	gelatine	gelatine	NN
40119	294	12	)	)	-RRB-
40119	294	13	cuts	cut	VBZ
40119	294	14	out	out	RP
40119	294	15	the	the	DT
40119	294	16	middle	middle	NN
40119	294	17	of	of	IN
40119	294	18	the	the	DT
40119	294	19	spectrum	spectrum	NN
40119	294	20	but	but	CC
40119	294	21	transmits	transmit	VBZ
40119	294	22	the	the	DT
40119	294	23	red	red	JJ
40119	294	24	and	and	CC
40119	294	25	violet	violet	NN
40119	294	26	ends	end	NNS
40119	294	27	.	.	.
40119	295	1	The	the	DT
40119	295	2	colour	colour	NN
40119	295	3	of	of	IN
40119	295	4	the	the	DT
40119	295	5	gelatine	gelatine	NN
40119	295	6	is	be	VBZ
40119	295	7	purple	purple	JJ
40119	295	8	.	.	.
40119	296	1	[	[	-LRB-
40119	296	2	5	5	LS
40119	296	3	]	]	-RRB-
40119	296	4	The	the	DT
40119	296	5	glasses	glass	NNS
40119	296	6	and	and	CC
40119	296	7	the	the	DT
40119	296	8	gelatine	gelatine	NN
40119	296	9	in	in	IN
40119	296	10	question	question	NN
40119	296	11	act	act	NNP
40119	296	12	like	like	IN
40119	296	13	the	the	DT
40119	296	14	cardboard	cardboard	NN
40119	296	15	stencils	stencil	NNS
40119	296	16	in	in	IN
40119	296	17	completely	completely	RB
40119	296	18	cutting	cut	VBG
40119	296	19	off	off	RP
40119	296	20	some	some	DT
40119	296	21	of	of	IN
40119	296	22	the	the	DT
40119	296	23	spectral	spectral	JJ
40119	296	24	rays	ray	NNS
40119	296	25	and	and	CC
40119	296	26	transmitting	transmit	VBG
40119	296	27	others	other	NNS
40119	296	28	,	,	,
40119	296	29	and	and	CC
40119	296	30	they	-PRON-	PRP
40119	296	31	owe	owe	VBP
40119	296	32	their	-PRON-	PRP$
40119	296	33	apparent	apparent	JJ
40119	296	34	colours	colour	NNS
40119	296	35	to	to	IN
40119	296	36	the	the	DT
40119	296	37	combined	combine	VBN
40119	296	38	influence	influence	NN
40119	296	39	which	which	WDT
40119	296	40	the	the	DT
40119	296	41	transmitted	transmit	VBN
40119	296	42	rays	ray	NNS
40119	296	43	exert	exert	VBP
40119	296	44	upon	upon	IN
40119	296	45	the	the	DT
40119	296	46	eye	eye	NN
40119	296	47	.	.	.
40119	297	1	Many	many	JJ
40119	297	2	other	other	JJ
40119	297	3	coloured	coloured	JJ
40119	297	4	glasses	glass	NNS
40119	297	5	merely	merely	RB
40119	297	6	weaken	weaken	VBP
40119	297	7	some	some	DT
40119	297	8	of	of	IN
40119	297	9	the	the	DT
40119	297	10	rays	ray	NNS
40119	297	11	,	,	,
40119	297	12	without	without	IN
40119	297	13	entirely	entirely	RB
40119	297	14	quenching	quench	VBG
40119	297	15	any	any	DT
40119	297	16	.	.	.
40119	298	1	A	a	DT
40119	298	2	piece	piece	NN
40119	298	3	of	of	IN
40119	298	4	pale	pale	JJ
40119	298	5	yellow	yellow	JJ
40119	298	6	glass	glass	NN
40119	298	7	,	,	,
40119	298	8	for	for	IN
40119	298	9	example	example	NN
40119	298	10	,	,	,
40119	298	11	when	when	WRB
40119	298	12	placed	place	VBN
40119	298	13	in	in	IN
40119	298	14	the	the	DT
40119	298	15	path	path	NN
40119	298	16	of	of	IN
40119	298	17	the	the	DT
40119	298	18	beam	beam	NN
40119	298	19	of	of	IN
40119	298	20	light	light	NN
40119	298	21	from	from	IN
40119	298	22	which	which	WDT
40119	298	23	the	the	DT
40119	298	24	spectrum	spectrum	NN
40119	298	25	on	on	IN
40119	298	26	the	the	DT
40119	298	27	screen	screen	NN
40119	298	28	is	be	VBZ
40119	298	29	formed	form	VBN
40119	298	30	,	,	,
40119	298	31	simply	simply	RB
40119	298	32	diminishes	diminish	VBZ
40119	298	33	the	the	DT
40119	298	34	brightness	brightness	NN
40119	298	35	of	of	IN
40119	298	36	the	the	DT
40119	298	37	blue	blue	JJ
40119	298	38	region	region	NN
40119	298	39	and	and	CC
40119	298	40	does	do	VBZ
40119	298	41	not	not	RB
40119	298	42	wholly	wholly	RB
40119	298	43	quench	quench	VB
40119	298	44	any	any	DT
40119	298	45	of	of	IN
40119	298	46	the	the	DT
40119	298	47	rays	ray	NNS
40119	298	48	;	;	:
40119	298	49	and	and	CC
40119	298	50	again	again	RB
40119	298	51	,	,	,
40119	298	52	a	a	DT
40119	298	53	common	common	JJ
40119	298	54	kind	kind	NN
40119	298	55	of	of	IN
40119	298	56	violet	violet	NN
40119	298	57	-	-	HYPH
40119	298	58	coloured	colour	VBN
40119	298	59	glass	glass	NN
40119	298	60	enfeebles	enfeeble	NNS
40119	298	61	,	,	,
40119	298	62	but	but	CC
40119	298	63	does	do	VBZ
40119	298	64	not	not	RB
40119	298	65	quite	quite	RB
40119	298	66	obliterate	obliterate	VB
40119	298	67	,	,	,
40119	298	68	the	the	DT
40119	298	69	middle	middle	JJ
40119	298	70	portion	portion	NN
40119	298	71	of	of	IN
40119	298	72	the	the	DT
40119	298	73	spectrum	spectrum	NN
40119	298	74	.	.	.
40119	299	1	From	from	IN
40119	299	2	such	such	JJ
40119	299	3	observations	observation	NNS
40119	299	4	as	as	IN
40119	299	5	these	these	DT
40119	299	6	we	-PRON-	PRP
40119	299	7	infer	infer	VBP
40119	299	8	that	that	IN
40119	299	9	the	the	DT
40119	299	10	glasses	glass	NNS
40119	299	11	derive	derive	VBP
40119	299	12	their	-PRON-	PRP$
40119	299	13	respective	respective	JJ
40119	299	14	colours	colour	NNS
40119	299	15	from	from	IN
40119	299	16	the	the	DT
40119	299	17	light	light	NN
40119	299	18	which	which	WDT
40119	299	19	falls	fall	VBZ
40119	299	20	upon	upon	IN
40119	299	21	them	-PRON-	PRP
40119	299	22	.	.	.
40119	300	1	The	the	DT
40119	300	2	first	first	JJ
40119	300	3	glass	glass	NN
40119	300	4	would	would	MD
40119	300	5	not	not	RB
40119	300	6	appear	appear	VB
40119	300	7	red	red	JJ
40119	300	8	if	if	IN
40119	300	9	seen	see	VBN
40119	300	10	in	in	IN
40119	300	11	a	a	DT
40119	300	12	light	light	NN
40119	300	13	which	which	WDT
40119	300	14	contained	contain	VBD
40119	300	15	no	no	DT
40119	300	16	red	red	JJ
40119	300	17	rays	ray	NNS
40119	300	18	.	.	.
40119	301	1	This	this	DT
40119	301	2	is	be	VBZ
40119	301	3	easily	easily	RB
40119	301	4	proved	prove	VBN
40119	301	5	by	by	IN
40119	301	6	an	an	DT
40119	301	7	experiment	experiment	NN
40119	301	8	with	with	IN
40119	301	9	the	the	DT
40119	301	10	colour	colour	NN
40119	301	11	-	-	HYPH
40119	301	12	patch	patch	NN
40119	301	13	apparatus	apparatus	NN
40119	301	14	.	.	.
40119	302	1	The	the	DT
40119	302	2	spectrum	spectrum	NN
40119	302	3	being	be	VBG
40119	302	4	once	once	RB
40119	302	5	more	more	RBR
40119	302	6	combined	combine	VBN
40119	302	7	into	into	IN
40119	302	8	a	a	DT
40119	302	9	bright	bright	JJ
40119	302	10	white	white	JJ
40119	302	11	patch	patch	NN
40119	302	12	(	(	-LRB-
40119	302	13	which	which	WDT
40119	302	14	turns	turn	VBZ
40119	302	15	red	red	JJ
40119	302	16	if	if	IN
40119	302	17	the	the	DT
40119	302	18	glass	glass	NN
40119	302	19	is	be	VBZ
40119	302	20	for	for	IN
40119	302	21	a	a	DT
40119	302	22	moment	moment	NN
40119	302	23	interposed	interpose	VBN
40119	302	24	)	)	-RRB-
40119	302	25	,	,	,
40119	302	26	let	let	VB
40119	302	27	all	all	PDT
40119	302	28	the	the	DT
40119	302	29	red	red	JJ
40119	302	30	rays	ray	NNS
40119	302	31	and	and	CC
40119	302	32	part	part	NN
40119	302	33	of	of	IN
40119	302	34	the	the	DT
40119	302	35	orange	orange	NN
40119	302	36	be	be	VB
40119	302	37	cut	cut	VBN
40119	302	38	off	off	RP
40119	302	39	with	with	IN
40119	302	40	a	a	DT
40119	302	41	suitable	suitable	JJ
40119	302	42	stencil	stencil	NN
40119	302	43	.	.	.
40119	303	1	The	the	DT
40119	303	2	re	re	JJ
40119	303	3	-	-	JJ
40119	303	4	combined	combined	JJ
40119	303	5	light	light	NN
40119	303	6	is	be	VBZ
40119	303	7	no	no	DT
40119	303	8	longer	long	RBR
40119	303	9	white	white	JJ
40119	303	10	but	but	CC
40119	303	11	greenish	greenish	NN
40119	303	12	-	-	HYPH
40119	303	13	blue	blue	JJ
40119	303	14	,	,	,
40119	303	15	as	as	IN
40119	303	16	is	be	VBZ
40119	303	17	evidenced	evidence	VBN
40119	303	18	by	by	IN
40119	303	19	the	the	DT
40119	303	20	colour	colour	NN
40119	303	21	of	of	IN
40119	303	22	the	the	DT
40119	303	23	patch	patch	NN
40119	303	24	;	;	:
40119	303	25	and	and	CC
40119	303	26	nothing	nothing	NN
40119	303	27	that	that	WDT
40119	303	28	is	be	VBZ
40119	303	29	illuminated	illuminate	VBN
40119	303	30	by	by	IN
40119	303	31	this	this	DT
40119	303	32	light	light	NN
40119	303	33	can	can	MD
40119	303	34	possibly	possibly	RB
40119	303	35	appear	appear	VB
40119	303	36	red	red	JJ
40119	303	37	.	.	.
40119	304	1	The	the	DT
40119	304	2	piece	piece	NN
40119	304	3	of	of	IN
40119	304	4	red	red	JJ
40119	304	5	glass	glass	NN
40119	304	6	,	,	,
40119	304	7	if	if	IN
40119	304	8	placed	place	VBN
40119	304	9	in	in	IN
40119	304	10	the	the	DT
40119	304	11	beam	beam	NN
40119	304	12	,	,	,
40119	304	13	will	will	MD
40119	304	14	now	now	RB
40119	304	15	cast	cast	VB
40119	304	16	a	a	DT
40119	304	17	perfectly	perfectly	RB
40119	304	18	black	black	JJ
40119	304	19	shadow	shadow	NN
40119	304	20	,	,	,
40119	304	21	and	and	CC
40119	304	22	a	a	DT
40119	304	23	square	square	NN
40119	304	24	of	of	IN
40119	304	25	bright	bright	JJ
40119	304	26	red	red	JJ
40119	304	27	paper	paper	NN
40119	304	28	held	hold	VBN
40119	304	29	in	in	IN
40119	304	30	the	the	DT
40119	304	31	middle	middle	NN
40119	304	32	of	of	IN
40119	304	33	the	the	DT
40119	304	34	patch	patch	NN
40119	304	35	will	will	MD
40119	304	36	look	look	VB
40119	304	37	as	as	RB
40119	304	38	black	black	JJ
40119	304	39	as	as	IN
40119	304	40	ink	ink	NN
40119	304	41	.	.	.
40119	305	1	It	-PRON-	PRP
40119	305	2	will	will	MD
40119	305	3	be	be	VB
40119	305	4	shown	show	VBN
40119	305	5	later	later	RB
40119	305	6	how	how	WRB
40119	305	7	we	-PRON-	PRP
40119	305	8	may	may	MD
40119	305	9	obtain	obtain	VB
40119	305	10	light	light	NN
40119	305	11	which	which	WDT
40119	305	12	,	,	,
40119	305	13	although	although	IN
40119	305	14	it	-PRON-	PRP
40119	305	15	appears	appear	VBZ
40119	305	16	to	to	IN
40119	305	17	the	the	DT
40119	305	18	eye	eye	NN
40119	305	19	to	to	TO
40119	305	20	differ	differ	VB
40119	305	21	in	in	IN
40119	305	22	no	no	DT
40119	305	23	respect	respect	NN
40119	305	24	from	from	IN
40119	305	25	ordinary	ordinary	JJ
40119	305	26	white	white	JJ
40119	305	27	daylight	daylight	NN
40119	305	28	,	,	,
40119	305	29	yet	yet	RB
40119	305	30	contains	contain	VBZ
40119	305	31	no	no	DT
40119	305	32	red	red	JJ
40119	305	33	component	component	NN
40119	305	34	,	,	,
40119	305	35	and	and	CC
40119	305	36	is	be	VBZ
40119	305	37	consequently	consequently	RB
40119	305	38	as	as	RB
40119	305	39	powerless	powerless	JJ
40119	305	40	as	as	IN
40119	305	41	this	this	DT
40119	305	42	greenish	greenish	NN
40119	305	43	-	-	HYPH
40119	305	44	blue	blue	JJ
40119	305	45	light	light	NN
40119	305	46	to	to	TO
40119	305	47	reveal	reveal	VB
40119	305	48	any	any	DT
40119	305	49	red	red	JJ
40119	305	50	colour	colour	NN
40119	305	51	in	in	IN
40119	305	52	the	the	DT
40119	305	53	objects	object	NNS
40119	305	54	which	which	WDT
40119	305	55	it	-PRON-	PRP
40119	305	56	illuminates	illuminate	VBZ
40119	305	57	.	.	.
40119	306	1	If	if	IN
40119	306	2	we	-PRON-	PRP
40119	306	3	substitute	substitute	VBP
40119	306	4	a	a	DT
40119	306	5	stencil	stencil	NN
40119	306	6	which	which	WDT
40119	306	7	admits	admit	VBZ
40119	306	8	only	only	RB
40119	306	9	red	red	JJ
40119	306	10	rays	ray	NNS
40119	306	11	,	,	,
40119	306	12	we	-PRON-	PRP
40119	306	13	shall	shall	MD
40119	306	14	obtain	obtain	VB
40119	306	15	a	a	DT
40119	306	16	beam	beam	NN
40119	306	17	of	of	IN
40119	306	18	light	light	NN
40119	306	19	in	in	IN
40119	306	20	which	which	WDT
40119	306	21	no	no	DT
40119	306	22	colour	colour	NN
40119	306	23	but	but	CC
40119	306	24	red	red	NN
40119	306	25	can	can	MD
40119	306	26	be	be	VB
40119	306	27	seen	see	VBN
40119	306	28	.	.	.
40119	307	1	Green	green	JJ
40119	307	2	and	and	CC
40119	307	3	blue	blue	JJ
40119	307	4	glasses	glass	NNS
40119	307	5	when	when	WRB
40119	307	6	exposed	expose	VBN
40119	307	7	to	to	IN
40119	307	8	this	this	DT
40119	307	9	light	light	NN
40119	307	10	will	will	MD
40119	307	11	cast	cast	VB
40119	307	12	black	black	JJ
40119	307	13	shadows	shadow	NNS
40119	307	14	,	,	,
40119	307	15	while	while	IN
40119	307	16	pieces	piece	NNS
40119	307	17	of	of	IN
40119	307	18	green	green	JJ
40119	307	19	and	and	CC
40119	307	20	blue	blue	JJ
40119	307	21	paper	paper	NN
40119	307	22	will	will	MD
40119	307	23	become	become	VB
40119	307	24	either	either	DT
40119	307	25	black	black	JJ
40119	307	26	or	or	CC
40119	307	27	dark	dark	JJ
40119	307	28	grey	grey	NN
40119	307	29	.	.	.
40119	308	1	We	-PRON-	PRP
40119	308	2	see	see	VBP
40119	308	3	then	then	RB
40119	308	4	that	that	IN
40119	308	5	the	the	DT
40119	308	6	colours	colour	NNS
40119	308	7	of	of	IN
40119	308	8	transparent	transparent	JJ
40119	308	9	objects	object	NNS
40119	308	10	,	,	,
40119	308	11	like	like	IN
40119	308	12	the	the	DT
40119	308	13	glasses	glass	NNS
40119	308	14	used	use	VBN
40119	308	15	in	in	IN
40119	308	16	these	these	DT
40119	308	17	experiments	experiment	NNS
40119	308	18	,	,	,
40119	308	19	are	be	VBP
40119	308	20	brought	bring	VBN
40119	308	21	out	out	RP
40119	308	22	by	by	IN
40119	308	23	a	a	DT
40119	308	24	process	process	NN
40119	308	25	of	of	IN
40119	308	26	filtration	filtration	NN
40119	308	27	.	.	.
40119	309	1	Certain	certain	JJ
40119	309	2	of	of	IN
40119	309	3	the	the	DT
40119	309	4	coloured	coloured	JJ
40119	309	5	ingredients	ingredient	NNS
40119	309	6	of	of	IN
40119	309	7	white	white	JJ
40119	309	8	light	light	NN
40119	309	9	are	be	VBP
40119	309	10	filtered	filter	VBN
40119	309	11	out	out	RP
40119	309	12	and	and	CC
40119	309	13	quenched	quench	VBN
40119	309	14	inside	inside	IN
40119	309	15	the	the	DT
40119	309	16	glass	glass	NN
40119	309	17	,	,	,
40119	309	18	and	and	CC
40119	309	19	it	-PRON-	PRP
40119	309	20	is	be	VBZ
40119	309	21	to	to	IN
40119	309	22	the	the	DT
40119	309	23	remaining	remain	VBG
40119	309	24	ingredients	ingredient	NNS
40119	309	25	which	which	WDT
40119	309	26	pass	pass	VBP
40119	309	27	through	through	IN
40119	309	28	unimpeded	unimpede	VBN
40119	309	29	that	that	IN
40119	309	30	the	the	DT
40119	309	31	observed	observed	JJ
40119	309	32	colour	colour	NN
40119	309	33	is	be	VBZ
40119	309	34	due	due	JJ
40119	309	35	.	.	.
40119	310	1	The	the	DT
40119	310	2	energy	energy	NN
40119	310	3	of	of	IN
40119	310	4	the	the	DT
40119	310	5	absorbed	absorb	VBN
40119	310	6	rays	ray	NNS
40119	310	7	is	be	VBZ
40119	310	8	not	not	RB
40119	310	9	lost	lose	VBN
40119	310	10	of	of	IN
40119	310	11	course	course	NN
40119	310	12	,	,	,
40119	310	13	for	for	IN
40119	310	14	energy	energy	NN
40119	310	15	,	,	,
40119	310	16	like	like	IN
40119	310	17	matter	matter	NN
40119	310	18	,	,	,
40119	310	19	is	be	VBZ
40119	310	20	indestructible	indestructible	JJ
40119	310	21	.	.	.
40119	311	1	It	-PRON-	PRP
40119	311	2	is	be	VBZ
40119	311	3	transformed	transform	VBN
40119	311	4	into	into	IN
40119	311	5	heat	heat	NN
40119	311	6	.	.	.
40119	312	1	A	a	DT
40119	312	2	coloured	coloured	JJ
40119	312	3	glass	glass	NN
40119	312	4	held	hold	VBN
40119	312	5	in	in	IN
40119	312	6	a	a	DT
40119	312	7	strong	strong	JJ
40119	312	8	beam	beam	NN
40119	312	9	of	of	IN
40119	312	10	light	light	NN
40119	312	11	will	will	MD
40119	312	12	in	in	IN
40119	312	13	a	a	DT
40119	312	14	short	short	JJ
40119	312	15	time	time	NN
40119	312	16	become	become	VB
40119	312	17	sensibly	sensibly	RB
40119	312	18	warmer	warm	JJR
40119	312	19	than	than	IN
40119	312	20	one	one	NN
40119	312	21	that	that	WDT
40119	312	22	is	be	VBZ
40119	312	23	clear	clear	JJ
40119	312	24	and	and	CC
40119	312	25	colourless	colourless	JJ
40119	312	26	.	.	.
40119	313	1	In	in	IN
40119	313	2	studying	study	VBG
40119	313	3	colour	colour	NN
40119	313	4	effects	effect	NNS
40119	313	5	as	as	IN
40119	313	6	produced	produce	VBN
40119	313	7	by	by	IN
40119	313	8	coloured	coloured	JJ
40119	313	9	glasses	glass	NNS
40119	313	10	,	,	,
40119	313	11	we	-PRON-	PRP
40119	313	12	have	have	VBP
40119	313	13	at	at	IN
40119	313	14	the	the	DT
40119	313	15	same	same	JJ
40119	313	16	time	time	NN
40119	313	17	been	be	VBN
40119	313	18	learning	learn	VBG
40119	313	19	how	how	WRB
40119	313	20	the	the	DT
40119	313	21	great	great	JJ
40119	313	22	majority	majority	NN
40119	313	23	of	of	IN
40119	313	24	natural	natural	JJ
40119	313	25	objects	object	NNS
40119	313	26	--	--	:
40119	313	27	not	not	RB
40119	313	28	only	only	RB
40119	313	29	those	those	DT
40119	313	30	which	which	WDT
40119	313	31	are	be	VBP
40119	313	32	transparent	transparent	JJ
40119	313	33	but	but	CC
40119	313	34	also	also	RB
40119	313	35	those	those	DT
40119	313	36	called	call	VBN
40119	313	37	opaque	opaque	NN
40119	313	38	--	--	:
40119	313	39	become	become	VBP
40119	313	40	possessed	possessed	JJ
40119	313	41	of	of	IN
40119	313	42	their	-PRON-	PRP$
40119	313	43	colours	colour	NNS
40119	313	44	.	.	.
40119	314	1	For	for	IN
40119	314	2	the	the	DT
40119	314	3	truth	truth	NN
40119	314	4	is	be	VBZ
40119	314	5	that	that	IN
40119	314	6	few	few	JJ
40119	314	7	things	thing	NNS
40119	314	8	are	be	VBP
40119	314	9	perfectly	perfectly	RB
40119	314	10	opaque	opaque	JJ
40119	314	11	.	.	.
40119	315	1	When	when	WRB
40119	315	2	white	white	JJ
40119	315	3	light	light	NN
40119	315	4	falls	fall	VBZ
40119	315	5	upon	upon	IN
40119	315	6	a	a	DT
40119	315	7	coloured	coloured	JJ
40119	315	8	body	body	NN
40119	315	9	,	,	,
40119	315	10	it	-PRON-	PRP
40119	315	11	generally	generally	RB
40119	315	12	penetrates	penetrate	VBZ
40119	315	13	to	to	IN
40119	315	14	a	a	DT
40119	315	15	small	small	JJ
40119	315	16	depth	depth	NN
40119	315	17	below	below	IN
40119	315	18	the	the	DT
40119	315	19	surface	surface	NN
40119	315	20	,	,	,
40119	315	21	and	and	CC
40119	315	22	in	in	IN
40119	315	23	so	so	RB
40119	315	24	doing	do	VBG
40119	315	25	loses	lose	NNS
40119	315	26	by	by	IN
40119	315	27	absorption	absorption	NN
40119	315	28	some	some	DT
40119	315	29	of	of	IN
40119	315	30	its	-PRON-	PRP$
40119	315	31	coloured	coloured	JJ
40119	315	32	components	component	NNS
40119	315	33	,	,	,
40119	315	34	just	just	RB
40119	315	35	as	as	IN
40119	315	36	it	-PRON-	PRP
40119	315	37	does	do	VBZ
40119	315	38	in	in	IN
40119	315	39	passing	pass	VBG
40119	315	40	through	through	IN
40119	315	41	the	the	DT
40119	315	42	pieces	piece	NNS
40119	315	43	of	of	IN
40119	315	44	glass	glass	NN
40119	315	45	.	.	.
40119	316	1	But	but	CC
40119	316	2	before	before	IN
40119	316	3	it	-PRON-	PRP
40119	316	4	has	have	VBZ
40119	316	5	gone	go	VBN
40119	316	6	very	very	RB
40119	316	7	far	far	RB
40119	316	8	--	--	:
40119	316	9	generally	generally	RB
40119	316	10	much	much	RB
40119	316	11	less	less	JJR
40119	316	12	than	than	IN
40119	316	13	a	a	DT
40119	316	14	thousandth	thousandth	JJ
40119	316	15	part	part	NN
40119	316	16	of	of	IN
40119	316	17	an	an	DT
40119	316	18	inch	inch	NN
40119	316	19	--	--	:
40119	316	20	it	-PRON-	PRP
40119	316	21	has	have	VBZ
40119	316	22	encountered	encounter	VBN
40119	316	23	a	a	DT
40119	316	24	number	number	NN
40119	316	25	of	of	IN
40119	316	26	little	little	JJ
40119	316	27	reflecting	reflect	VBG
40119	316	28	surfaces	surface	NNS
40119	316	29	due	due	JJ
40119	316	30	to	to	IN
40119	316	31	optical	optical	JJ
40119	316	32	irregularities	irregularity	NNS
40119	316	33	,	,	,
40119	316	34	which	which	WDT
40119	316	35	turn	turn	VBP
40119	316	36	the	the	DT
40119	316	37	light	light	NN
40119	316	38	back	back	RB
40119	316	39	again	again	RB
40119	316	40	and	and	CC
40119	316	41	compel	compel	VB
40119	316	42	it	-PRON-	PRP
40119	316	43	to	to	TO
40119	316	44	pass	pass	VB
40119	316	45	a	a	DT
40119	316	46	second	second	JJ
40119	316	47	time	time	NN
40119	316	48	through	through	IN
40119	316	49	the	the	DT
40119	316	50	same	same	JJ
40119	316	51	thickness	thickness	NN
40119	316	52	of	of	IN
40119	316	53	the	the	DT
40119	316	54	substance	substance	NN
40119	316	55	:	:	:
40119	316	56	it	-PRON-	PRP
40119	316	57	thus	thus	RB
40119	316	58	becomes	become	VBZ
40119	316	59	still	still	RB
40119	316	60	more	more	RBR
40119	316	61	effectively	effectively	RB
40119	316	62	sifted	sift	VBN
40119	316	63	,	,	,
40119	316	64	and	and	CC
40119	316	65	on	on	IN
40119	316	66	emerging	emerge	VBG
40119	316	67	is	be	VBZ
40119	316	68	imbued	imbue	VBN
40119	316	69	with	with	IN
40119	316	70	a	a	DT
40119	316	71	colour	colour	NN
40119	316	72	due	due	JJ
40119	316	73	to	to	IN
40119	316	74	such	such	JJ
40119	316	75	of	of	IN
40119	316	76	the	the	DT
40119	316	77	components	component	NNS
40119	316	78	as	as	IN
40119	316	79	have	have	VBP
40119	316	80	not	not	RB
40119	316	81	been	be	VBN
40119	316	82	quenched	quench	VBN
40119	316	83	in	in	IN
40119	316	84	the	the	DT
40119	316	85	course	course	NN
40119	316	86	of	of	IN
40119	316	87	their	-PRON-	PRP$
40119	316	88	double	double	JJ
40119	316	89	journey	journey	NN
40119	316	90	through	through	IN
40119	316	91	a	a	DT
40119	316	92	superficial	superficial	JJ
40119	316	93	layer	layer	NN
40119	316	94	of	of	IN
40119	316	95	the	the	DT
40119	316	96	substance	substance	NN
40119	316	97	.	.	.
40119	317	1	Any	any	DT
40119	317	2	coloured	coloured	JJ
40119	317	3	rays	ray	NNS
40119	317	4	reflected	reflect	VBN
40119	317	5	by	by	IN
40119	317	6	an	an	DT
40119	317	7	object	object	NN
40119	317	8	must	must	MD
40119	317	9	necessarily	necessarily	RB
40119	317	10	be	be	VB
40119	317	11	contained	contain	VBN
40119	317	12	in	in	IN
40119	317	13	the	the	DT
40119	317	14	light	light	NN
40119	317	15	by	by	IN
40119	317	16	which	which	WDT
40119	317	17	the	the	DT
40119	317	18	object	object	NN
40119	317	19	is	be	VBZ
40119	317	20	seen	see	VBN
40119	317	21	.	.	.
40119	318	1	The	the	DT
40119	318	2	following	follow	VBG
40119	318	3	is	be	VBZ
40119	318	4	a	a	DT
40119	318	5	curious	curious	JJ
40119	318	6	experiment	experiment	NN
40119	318	7	illustrating	illustrate	VBG
40119	318	8	this	this	DT
40119	318	9	.	.	.
40119	319	1	A	a	DT
40119	319	2	large	large	JJ
40119	319	3	bright	bright	JJ
40119	319	4	spectrum	spectrum	NN
40119	319	5	is	be	VBZ
40119	319	6	projected	project	VBN
40119	319	7	upon	upon	IN
40119	319	8	a	a	DT
40119	319	9	screen	screen	NN
40119	319	10	and	and	CC
40119	319	11	in	in	IN
40119	319	12	the	the	DT
40119	319	13	green	green	JJ
40119	319	14	or	or	CC
40119	319	15	blue	blue	JJ
40119	319	16	portion	portion	NN
40119	319	17	of	of	IN
40119	319	18	it	-PRON-	PRP
40119	319	19	is	be	VBZ
40119	319	20	held	hold	VBN
40119	319	21	a	a	DT
40119	319	22	wall	wall	NN
40119	319	23	poster	poster	NN
40119	319	24	.	.	.
40119	320	1	The	the	DT
40119	320	2	letters	letter	NNS
40119	320	3	and	and	CC
40119	320	4	figures	figure	NNS
40119	320	5	upon	upon	IN
40119	320	6	the	the	DT
40119	320	7	paper	paper	NN
40119	320	8	are	be	VBP
40119	320	9	seen	see	VBN
40119	320	10	to	to	TO
40119	320	11	stand	stand	VB
40119	320	12	out	out	RP
40119	320	13	boldly	boldly	RB
40119	320	14	as	as	IN
40119	320	15	if	if	IN
40119	320	16	printed	print	VBN
40119	320	17	with	with	IN
40119	320	18	the	the	DT
40119	320	19	blackest	black	JJS
40119	320	20	ink	ink	NN
40119	320	21	.	.	.
40119	321	1	But	but	CC
40119	321	2	if	if	IN
40119	321	3	the	the	DT
40119	321	4	poster	poster	NN
40119	321	5	is	be	VBZ
40119	321	6	moved	move	VBN
40119	321	7	into	into	IN
40119	321	8	the	the	DT
40119	321	9	red	red	JJ
40119	321	10	part	part	NN
40119	321	11	of	of	IN
40119	321	12	the	the	DT
40119	321	13	spectrum	spectrum	NN
40119	321	14	,	,	,
40119	321	15	the	the	DT
40119	321	16	printing	printing	NN
40119	321	17	at	at	IN
40119	321	18	once	once	RB
40119	321	19	disappears	disappear	VBZ
40119	321	20	as	as	IN
40119	321	21	if	if	IN
40119	321	22	by	by	IN
40119	321	23	magic	magic	NN
40119	321	24	,	,	,
40119	321	25	and	and	CC
40119	321	26	the	the	DT
40119	321	27	paper	paper	NN
40119	321	28	appears	appear	VBZ
40119	321	29	perfectly	perfectly	RB
40119	321	30	blank	blank	JJ
40119	321	31	.	.	.
40119	322	1	The	the	DT
40119	322	2	explanation	explanation	NN
40119	322	3	is	be	VBZ
40119	322	4	that	that	IN
40119	322	5	the	the	DT
40119	322	6	letters	letter	NNS
40119	322	7	are	be	VBP
40119	322	8	printed	print	VBN
40119	322	9	in	in	IN
40119	322	10	red	red	JJ
40119	322	11	ink	ink	NN
40119	322	12	--	--	:
40119	322	13	they	-PRON-	PRP
40119	322	14	can	can	MD
40119	322	15	reflect	reflect	VB
40119	322	16	no	no	DT
40119	322	17	light	light	NN
40119	322	18	but	but	CC
40119	322	19	red	red	NN
40119	322	20	.	.	.
40119	323	1	Green	green	JJ
40119	323	2	or	or	CC
40119	323	3	blue	blue	JJ
40119	323	4	light	light	NN
40119	323	5	falling	fall	VBG
40119	323	6	upon	upon	IN
40119	323	7	them	-PRON-	PRP
40119	323	8	is	be	VBZ
40119	323	9	absorbed	absorb	VBN
40119	323	10	and	and	CC
40119	323	11	quenched	quench	VBN
40119	323	12	,	,	,
40119	323	13	and	and	CC
40119	323	14	the	the	DT
40119	323	15	letters	letter	NNS
40119	323	16	consequently	consequently	RB
40119	323	17	appear	appear	VBP
40119	323	18	black	black	JJ
40119	323	19	.	.	.
40119	324	1	On	on	IN
40119	324	2	the	the	DT
40119	324	3	other	other	JJ
40119	324	4	hand	hand	NN
40119	324	5	when	when	WRB
40119	324	6	the	the	DT
40119	324	7	poster	poster	NN
40119	324	8	is	be	VBZ
40119	324	9	illuminated	illuminate	VBN
40119	324	10	by	by	IN
40119	324	11	the	the	DT
40119	324	12	red	red	JJ
40119	324	13	rays	ray	NNS
40119	324	14	of	of	IN
40119	324	15	the	the	DT
40119	324	16	spectrum	spectrum	NN
40119	324	17	,	,	,
40119	324	18	the	the	DT
40119	324	19	letters	letter	NNS
40119	324	20	reflect	reflect	VBP
40119	324	21	just	just	RB
40119	324	22	as	as	RB
40119	324	23	much	much	JJ
40119	324	24	light	light	NN
40119	324	25	as	as	IN
40119	324	26	the	the	DT
40119	324	27	paper	paper	NN
40119	324	28	itself	-PRON-	PRP
40119	324	29	,	,	,
40119	324	30	and	and	CC
40119	324	31	are	be	VBP
40119	324	32	therefore	therefore	RB
40119	324	33	indistinguishable	indistinguishable	JJ
40119	324	34	from	from	IN
40119	324	35	it	-PRON-	PRP
40119	324	36	.	.	.
40119	325	1	Anything	anything	NN
40119	325	2	which	which	WDT
40119	325	3	,	,	,
40119	325	4	when	when	WRB
40119	325	5	illuminated	illuminate	VBN
40119	325	6	by	by	IN
40119	325	7	a	a	DT
40119	325	8	source	source	NN
40119	325	9	of	of	IN
40119	325	10	white	white	JJ
40119	325	11	light	light	NN
40119	325	12	,	,	,
40119	325	13	reflects	reflect	VBZ
40119	325	14	all	all	PDT
40119	325	15	its	-PRON-	PRP$
40119	325	16	various	various	JJ
40119	325	17	components	component	NNS
40119	325	18	equally	equally	RB
40119	325	19	and	and	CC
40119	325	20	without	without	IN
40119	325	21	absorbing	absorb	VBG
40119	325	22	a	a	DT
40119	325	23	larger	large	JJR
40119	325	24	proportion	proportion	NN
40119	325	25	of	of	IN
40119	325	26	some	some	DT
40119	325	27	than	than	IN
40119	325	28	of	of	IN
40119	325	29	others	other	NNS
40119	325	30	,	,	,
40119	325	31	appears	appear	VBZ
40119	325	32	white	white	JJ
40119	325	33	or	or	CC
40119	325	34	grey	grey	JJ
40119	325	35	.	.	.
40119	326	1	Between	between	IN
40119	326	2	white	white	JJ
40119	326	3	and	and	CC
40119	326	4	grey	grey	NN
40119	326	5	there	there	EX
40119	326	6	is	be	VBZ
40119	326	7	no	no	DT
40119	326	8	essential	essential	JJ
40119	326	9	difference	difference	NN
40119	326	10	except	except	IN
40119	326	11	in	in	IN
40119	326	12	luminosity	luminosity	NN
40119	326	13	,	,	,
40119	326	14	or	or	CC
40119	326	15	brightness	brightness	NN
40119	326	16	,	,	,
40119	326	17	that	that	DT
40119	326	18	is	be	VBZ
40119	326	19	to	to	TO
40119	326	20	say	say	VB
40119	326	21	,	,	,
40119	326	22	in	in	IN
40119	326	23	the	the	DT
40119	326	24	quantity	quantity	NN
40119	326	25	of	of	IN
40119	326	26	light	light	NN
40119	326	27	reflected	reflect	VBN
40119	326	28	to	to	IN
40119	326	29	the	the	DT
40119	326	30	eye	eye	NN
40119	326	31	,	,	,
40119	326	32	or	or	CC
40119	326	33	--	--	:
40119	326	34	to	to	TO
40119	326	35	go	go	VB
40119	326	36	a	a	DT
40119	326	37	step	step	NN
40119	326	38	further	far	RBR
40119	326	39	back	back	RB
40119	326	40	--	--	:
40119	326	41	in	in	IN
40119	326	42	the	the	DT
40119	326	43	amplitude	amplitude	NN
40119	326	44	of	of	IN
40119	326	45	the	the	DT
40119	326	46	ether	ether	NN
40119	326	47	waves	wave	NNS
40119	326	48	.	.	.
40119	327	1	Under	under	IN
40119	327	2	different	different	JJ
40119	327	3	conditions	condition	NNS
40119	327	4	of	of	IN
40119	327	5	illumination	illumination	NN
40119	327	6	any	any	DT
40119	327	7	substance	substance	NN
40119	327	8	which	which	WDT
40119	327	9	reflects	reflect	VBZ
40119	327	10	all	all	PDT
40119	327	11	the	the	DT
40119	327	12	rays	ray	NNS
40119	327	13	of	of	IN
40119	327	14	the	the	DT
40119	327	15	spectrum	spectrum	NN
40119	327	16	equally	equally	RB
40119	327	17	may	may	MD
40119	327	18	appear	appear	VB
40119	327	19	either	either	CC
40119	327	20	white	white	JJ
40119	327	21	or	or	CC
40119	327	22	grey	grey	JJ
40119	327	23	,	,	,
40119	327	24	or	or	CC
40119	327	25	even	even	RB
40119	327	26	black	black	JJ
40119	327	27	.	.	.
40119	328	1	A	a	DT
40119	328	2	snowball	snowball	NN
40119	328	3	can	can	MD
40119	328	4	easily	easily	RB
40119	328	5	be	be	VB
40119	328	6	made	make	VBN
40119	328	7	to	to	TO
40119	328	8	look	look	VB
40119	328	9	blacker	blacker	NN
40119	328	10	than	than	IN
40119	328	11	pitch	pitch	NN
40119	328	12	,	,	,
40119	328	13	and	and	CC
40119	328	14	a	a	DT
40119	328	15	block	block	NN
40119	328	16	of	of	IN
40119	328	17	pitch	pitch	NN
40119	328	18	whiter	whiter	NNP
40119	328	19	than	than	IN
40119	328	20	snow	snow	NN
40119	328	21	.	.	.
40119	329	1	It	-PRON-	PRP
40119	329	2	must	must	MD
40119	329	3	have	have	VB
40119	329	4	struck	strike	VBN
40119	329	5	many	many	JJ
40119	329	6	of	of	IN
40119	329	7	those	those	DT
40119	329	8	who	who	WP
40119	329	9	have	have	VBP
40119	329	10	thought	think	VBN
40119	329	11	about	about	IN
40119	329	12	the	the	DT
40119	329	13	matter	matter	NN
40119	329	14	at	at	RB
40119	329	15	all	all	RB
40119	329	16	as	as	IN
40119	329	17	a	a	DT
40119	329	18	most	most	RBS
40119	329	19	remarkable	remarkable	JJ
40119	329	20	coincidence	coincidence	NN
40119	329	21	that	that	WDT
40119	329	22	sunlight	sunlight	NN
40119	329	23	should	should	MD
40119	329	24	be	be	VB
40119	329	25	white	white	JJ
40119	329	26	.	.	.
40119	330	1	White	white	JJ
40119	330	2	light	light	NN
40119	330	3	,	,	,
40119	330	4	as	as	IN
40119	330	5	we	-PRON-	PRP
40119	330	6	have	have	VBP
40119	330	7	seen	see	VBN
40119	330	8	,	,	,
40119	330	9	consists	consist	VBZ
40119	330	10	of	of	IN
40119	330	11	a	a	DT
40119	330	12	mixture	mixture	NN
40119	330	13	of	of	IN
40119	330	14	variously	variously	RB
40119	330	15	-	-	HYPH
40119	330	16	coloured	coloured	JJ
40119	330	17	rays	ray	NNS
40119	330	18	in	in	IN
40119	330	19	very	very	RB
40119	330	20	different	different	JJ
40119	330	21	and	and	CC
40119	330	22	apparently	apparently	RB
40119	330	23	arbitrary	arbitrary	JJ
40119	330	24	proportions	proportion	NNS
40119	330	25	,	,	,
40119	330	26	and	and	CC
40119	330	27	if	if	IN
40119	330	28	these	these	DT
40119	330	29	proportions	proportion	NNS
40119	330	30	were	be	VBD
40119	330	31	a	a	DT
40119	330	32	little	little	RB
40119	330	33	changed	change	VBN
40119	330	34	the	the	DT
40119	330	35	light	light	NN
40119	330	36	would	would	MD
40119	330	37	no	no	RB
40119	330	38	longer	longer	RB
40119	330	39	be	be	VB
40119	330	40	quite	quite	RB
40119	330	41	colourless	colourless	JJ
40119	330	42	.	.	.
40119	331	1	No	no	DT
40119	331	2	ordinary	ordinary	JJ
40119	331	3	artificial	artificial	JJ
40119	331	4	light	light	NN
40119	331	5	is	be	VBZ
40119	331	6	so	so	RB
40119	331	7	exactly	exactly	RB
40119	331	8	white	white	JJ
40119	331	9	as	as	IN
40119	331	10	that	that	DT
40119	331	11	of	of	IN
40119	331	12	the	the	DT
40119	331	13	sun	sun	NN
40119	331	14	.	.	.
40119	332	1	The	the	DT
40119	332	2	light	light	NN
40119	332	3	of	of	IN
40119	332	4	candles	candle	NNS
40119	332	5	,	,	,
40119	332	6	gas	gas	NN
40119	332	7	,	,	,
40119	332	8	oil	oil	NN
40119	332	9	,	,	,
40119	332	10	and	and	CC
40119	332	11	electric	electric	JJ
40119	332	12	glow	glow	NN
40119	332	13	-	-	HYPH
40119	332	14	lamps	lamp	NNS
40119	332	15	is	be	VBZ
40119	332	16	yellow	yellow	JJ
40119	332	17	;	;	:
40119	332	18	that	that	DT
40119	332	19	of	of	IN
40119	332	20	the	the	DT
40119	332	21	electric	electric	JJ
40119	332	22	arc	arc	NN
40119	332	23	(	(	-LRB-
40119	332	24	when	when	WRB
40119	332	25	unaffected	unaffected	JJ
40119	332	26	by	by	IN
40119	332	27	atmospheric	atmospheric	JJ
40119	332	28	absorption	absorption	NN
40119	332	29	)	)	-RRB-
40119	332	30	is	be	VBZ
40119	332	31	blue	blue	JJ
40119	332	32	,	,	,
40119	332	33	and	and	CC
40119	332	34	that	that	DT
40119	332	35	of	of	IN
40119	332	36	the	the	DT
40119	332	37	incandescent	incandescent	JJ
40119	332	38	gas	gas	NN
40119	332	39	burner	burner	NN
40119	332	40	green	green	JJ
40119	332	41	.	.	.
40119	333	1	It	-PRON-	PRP
40119	333	2	is	be	VBZ
40119	333	3	exceedingly	exceedingly	RB
40119	333	4	convenient	convenient	JJ
40119	333	5	that	that	IN
40119	333	6	the	the	DT
40119	333	7	light	light	NN
40119	333	8	which	which	WDT
40119	333	9	serves	serve	VBZ
40119	333	10	us	-PRON-	PRP
40119	333	11	for	for	IN
40119	333	12	the	the	DT
40119	333	13	greater	great	JJR
40119	333	14	part	part	NN
40119	333	15	of	of	IN
40119	333	16	our	-PRON-	PRP$
40119	333	17	waking	waking	NN
40119	333	18	lives	life	NNS
40119	333	19	should	should	MD
40119	333	20	happen	happen	VB
40119	333	21	to	to	TO
40119	333	22	be	be	VB
40119	333	23	just	just	RB
40119	333	24	so	so	RB
40119	333	25	constituted	constituted	JJ
40119	333	26	that	that	IN
40119	333	27	it	-PRON-	PRP
40119	333	28	is	be	VBZ
40119	333	29	colourless	colourless	JJ
40119	333	30	.	.	.
40119	334	1	But	but	CC
40119	334	2	on	on	IN
40119	334	3	a	a	DT
40119	334	4	little	little	JJ
40119	334	5	further	further	JJ
40119	334	6	reflection	reflection	NN
40119	334	7	it	-PRON-	PRP
40119	334	8	will	will	MD
40119	334	9	,	,	,
40119	334	10	I	-PRON-	PRP
40119	334	11	think	think	VBP
40119	334	12	,	,	,
40119	334	13	appear	appear	VBP
40119	334	14	that	that	IN
40119	334	15	this	this	DT
40119	334	16	is	be	VBZ
40119	334	17	not	not	RB
40119	334	18	the	the	DT
40119	334	19	right	right	JJ
40119	334	20	way	way	NN
40119	334	21	to	to	TO
40119	334	22	look	look	VB
40119	334	23	at	at	IN
40119	334	24	the	the	DT
40119	334	25	matter	matter	NN
40119	334	26	.	.	.
40119	335	1	It	-PRON-	PRP
40119	335	2	is	be	VBZ
40119	335	3	precisely	precisely	RB
40119	335	4	because	because	IN
40119	335	5	the	the	DT
40119	335	6	hue	hue	NN
40119	335	7	called	call	VBN
40119	335	8	white	white	NNP
40119	335	9	is	be	VBZ
40119	335	10	the	the	DT
40119	335	11	one	one	CD
40119	335	12	which	which	WDT
40119	335	13	is	be	VBZ
40119	335	14	associated	associate	VBN
40119	335	15	with	with	IN
40119	335	16	the	the	DT
40119	335	17	light	light	NN
40119	335	18	of	of	IN
40119	335	19	our	-PRON-	PRP$
40119	335	20	sun	sun	NN
40119	335	21	that	that	WDT
40119	335	22	we	-PRON-	PRP
40119	335	23	regard	regard	VBP
40119	335	24	whiteness	whiteness	NN
40119	335	25	as	as	IN
40119	335	26	synonymous	synonymous	JJ
40119	335	27	with	with	IN
40119	335	28	absence	absence	NN
40119	335	29	of	of	IN
40119	335	30	colour	colour	NN
40119	335	31	.	.	.
40119	336	1	We	-PRON-	PRP
40119	336	2	take	take	VBP
40119	336	3	sunlight	sunlight	NN
40119	336	4	as	as	IN
40119	336	5	our	-PRON-	PRP$
40119	336	6	standard	standard	NN
40119	336	7	of	of	IN
40119	336	8	neutrality	neutrality	NN
40119	336	9	,	,	,
40119	336	10	and	and	CC
40119	336	11	anything	anything	NN
40119	336	12	that	that	WDT
40119	336	13	reflects	reflect	VBZ
40119	336	14	it	-PRON-	PRP
40119	336	15	without	without	IN
40119	336	16	altering	alter	VBG
40119	336	17	the	the	DT
40119	336	18	proportions	proportion	NNS
40119	336	19	of	of	IN
40119	336	20	its	-PRON-	PRP$
40119	336	21	constituents	constituent	NNS
40119	336	22	we	-PRON-	PRP
40119	336	23	consider	consider	VBP
40119	336	24	as	as	IN
40119	336	25	being	be	VBG
40119	336	26	colourless	colourless	JJ
40119	336	27	.	.	.
40119	337	1	There	there	EX
40119	337	2	can	can	MD
40119	337	3	be	be	VB
40119	337	4	little	little	JJ
40119	337	5	doubt	doubt	NN
40119	337	6	that	that	IN
40119	337	7	if	if	IN
40119	337	8	the	the	DT
40119	337	9	sun	sun	NN
40119	337	10	were	be	VBD
40119	337	11	purple	purple	JJ
40119	337	12	instead	instead	RB
40119	337	13	of	of	IN
40119	337	14	white	white	JJ
40119	337	15	,	,	,
40119	337	16	our	-PRON-	PRP$
40119	337	17	sentiments	sentiment	NNS
40119	337	18	as	as	IN
40119	337	19	regards	regard	VBZ
40119	337	20	these	these	DT
40119	337	21	two	two	CD
40119	337	22	hues	hue	NNS
40119	337	23	would	would	MD
40119	337	24	be	be	VB
40119	337	25	interchanged	interchange	VBN
40119	337	26	;	;	:
40119	337	27	we	-PRON-	PRP
40119	337	28	should	should	MD
40119	337	29	talk	talk	VB
40119	337	30	quite	quite	RB
40119	337	31	naturally	naturally	RB
40119	337	32	of	of	IN
40119	337	33	"	"	``
40119	337	34	a	a	DT
40119	337	35	pure	pure	JJ
40119	337	36	purple	purple	NN
40119	337	37	,	,	,
40119	337	38	entirely	entirely	RB
40119	337	39	free	free	JJ
40119	337	40	from	from	IN
40119	337	41	any	any	DT
40119	337	42	trace	trace	NN
40119	337	43	of	of	IN
40119	337	44	colour	colour	NN
40119	337	45	,	,	,
40119	337	46	"	"	''
40119	337	47	or	or	CC
40119	337	48	perhaps	perhaps	RB
40119	337	49	describe	describe	VB
40119	337	50	a	a	DT
40119	337	51	lady	lady	NN
40119	337	52	's	's	POS
40119	337	53	costume	costume	NN
40119	337	54	as	as	IN
40119	337	55	being	be	VBG
40119	337	56	of	of	IN
40119	337	57	a	a	DT
40119	337	58	"	"	``
40119	337	59	gaudy	gaudy	NNP
40119	337	60	white	white	NNP
40119	337	61	.	.	.
40119	337	62	"	"	''
40119	338	1	Even	even	RB
40119	338	2	as	as	IN
40119	338	3	things	thing	NNS
40119	338	4	are	be	VBP
40119	338	5	,	,	,
40119	338	6	the	the	DT
40119	338	7	standard	standard	NN
40119	338	8	of	of	IN
40119	338	9	neutrality	neutrality	NN
40119	338	10	is	be	VBZ
40119	338	11	not	not	RB
40119	338	12	quite	quite	RB
40119	338	13	a	a	DT
40119	338	14	hard	hard	JJ
40119	338	15	and	and	CC
40119	338	16	fast	fast	JJ
40119	338	17	one	one	CD
40119	338	18	.	.	.
40119	339	1	We	-PRON-	PRP
40119	339	2	have	have	VBP
40119	339	3	a	a	DT
40119	339	4	tendency	tendency	NN
40119	339	5	to	to	TO
40119	339	6	regard	regard	VB
40119	339	7	any	any	DT
40119	339	8	artificial	artificial	JJ
40119	339	9	light	light	NN
40119	339	10	which	which	WDT
40119	339	11	we	-PRON-	PRP
40119	339	12	may	may	MD
40119	339	13	happen	happen	VB
40119	339	14	to	to	TO
40119	339	15	be	be	VB
40119	339	16	using	use	VBG
40119	339	17	,	,	,
40119	339	18	as	as	IN
40119	339	19	more	more	RBR
40119	339	20	free	free	JJ
40119	339	21	from	from	IN
40119	339	22	colour	colour	NN
40119	339	23	than	than	IN
40119	339	24	it	-PRON-	PRP
40119	339	25	would	would	MD
40119	339	26	turn	turn	VB
40119	339	27	out	out	RP
40119	339	28	to	to	TO
40119	339	29	be	be	VB
40119	339	30	if	if	IN
40119	339	31	compared	compare	VBN
40119	339	32	directly	directly	RB
40119	339	33	with	with	IN
40119	339	34	sunlight	sunlight	NN
40119	339	35	.	.	.
40119	340	1	If	if	IN
40119	340	2	in	in	IN
40119	340	3	the	the	DT
40119	340	4	middle	middle	NN
40119	340	5	of	of	IN
40119	340	6	the	the	DT
40119	340	7	day	day	NN
40119	340	8	we	-PRON-	PRP
40119	340	9	go	go	VBP
40119	340	10	suddenly	suddenly	RB
40119	340	11	into	into	IN
40119	340	12	a	a	DT
40119	340	13	gas	gas	NN
40119	340	14	-	-	HYPH
40119	340	15	lit	light	VBN
40119	340	16	room	room	NN
40119	340	17	,	,	,
40119	340	18	we	-PRON-	PRP
40119	340	19	can	can	MD
40119	340	20	not	not	RB
40119	340	21	fail	fail	VB
40119	340	22	to	to	TO
40119	340	23	observe	observe	VB
40119	340	24	how	how	WRB
40119	340	25	intensely	intensely	RB
40119	340	26	yellow	yellow	JJ
40119	340	27	the	the	DT
40119	340	28	illumination	illumination	NN
40119	340	29	at	at	IN
40119	340	30	first	first	JJ
40119	340	31	appears	appear	VBZ
40119	340	32	;	;	:
40119	340	33	in	in	IN
40119	340	34	a	a	DT
40119	340	35	few	few	JJ
40119	340	36	minutes	minute	NNS
40119	340	37	,	,	,
40119	340	38	however	however	RB
40119	340	39	,	,	,
40119	340	40	the	the	DT
40119	340	41	colour	colour	NN
40119	340	42	loses	lose	VBZ
40119	340	43	its	-PRON-	PRP$
40119	340	44	obtrusiveness	obtrusiveness	NN
40119	340	45	and	and	CC
40119	340	46	we	-PRON-	PRP
40119	340	47	cease	cease	VBP
40119	340	48	to	to	TO
40119	340	49	take	take	VB
40119	340	50	much	much	JJ
40119	340	51	notice	notice	NN
40119	340	52	of	of	IN
40119	340	53	it	-PRON-	PRP
40119	340	54	.	.	.
40119	341	1	The	the	DT
40119	341	2	effect	effect	NN
40119	341	3	may	may	MD
40119	341	4	be	be	VB
40119	341	5	partly	partly	RB
40119	341	6	a	a	DT
40119	341	7	physiological	physiological	JJ
40119	341	8	one	one	NN
40119	341	9	,	,	,
40119	341	10	depending	depend	VBG
40119	341	11	upon	upon	IN
40119	341	12	unequal	unequal	JJ
40119	341	13	fatigue	fatigue	NN
40119	341	14	of	of	IN
40119	341	15	the	the	DT
40119	341	16	various	various	JJ
40119	341	17	perceptive	perceptive	JJ
40119	341	18	nerves	nerve	NNS
40119	341	19	of	of	IN
40119	341	20	the	the	DT
40119	341	21	retina	retina	NNP
40119	341	22	;	;	:
40119	341	23	but	but	CC
40119	341	24	I	-PRON-	PRP
40119	341	25	believe	believe	VBP
40119	341	26	that	that	IN
40119	341	27	it	-PRON-	PRP
40119	341	28	is	be	VBZ
40119	341	29	to	to	IN
40119	341	30	a	a	DT
40119	341	31	large	large	JJ
40119	341	32	extent	extent	NN
40119	341	33	due	due	IN
40119	341	34	to	to	IN
40119	341	35	mental	mental	JJ
40119	341	36	judgment	judgment	NN
40119	341	37	.	.	.
40119	342	1	The	the	DT
40119	342	2	standard	standard	NN
40119	342	3	of	of	IN
40119	342	4	whiteness	whiteness	NN
40119	342	5	,	,	,
40119	342	6	or	or	CC
40119	342	7	colour	colour	NN
40119	342	8	-	-	HYPH
40119	342	9	zero	zero	CD
40119	342	10	,	,	,
40119	342	11	can	can	MD
40119	342	12	apparently	apparently	RB
40119	342	13	be	be	VB
40119	342	14	changed	change	VBN
40119	342	15	within	within	IN
40119	342	16	certain	certain	JJ
40119	342	17	limits	limit	NNS
40119	342	18	in	in	IN
40119	342	19	a	a	DT
40119	342	20	very	very	RB
40119	342	21	short	short	JJ
40119	342	22	time	time	NN
40119	342	23	,	,	,
40119	342	24	and	and	CC
40119	342	25	,	,	,
40119	342	26	as	as	IN
40119	342	27	we	-PRON-	PRP
40119	342	28	shall	shall	MD
40119	342	29	see	see	VB
40119	342	30	later	later	RBR
40119	342	31	,	,	,
40119	342	32	this	this	DT
40119	342	33	is	be	VBZ
40119	342	34	only	only	RB
40119	342	35	one	one	CD
40119	342	36	of	of	IN
40119	342	37	many	many	JJ
40119	342	38	instances	instance	NNS
40119	342	39	in	in	IN
40119	342	40	which	which	WDT
40119	342	41	our	-PRON-	PRP$
40119	342	42	organs	organ	NNS
40119	342	43	of	of	IN
40119	342	44	vision	vision	NN
40119	342	45	seem	seem	VBP
40119	342	46	to	to	TO
40119	342	47	be	be	VB
40119	342	48	incapable	incapable	JJ
40119	342	49	of	of	IN
40119	342	50	recognising	recognise	VBG
40119	342	51	a	a	DT
40119	342	52	constant	constant	JJ
40119	342	53	standard	standard	NN
40119	342	54	of	of	IN
40119	342	55	reference	reference	NN
40119	342	56	.	.	.
40119	343	1	And	and	CC
40119	343	2	now	now	RB
40119	343	3	let	let	VB
40119	343	4	us	-PRON-	PRP
40119	343	5	consider	consider	VB
40119	343	6	how	how	WRB
40119	343	7	it	-PRON-	PRP
40119	343	8	comes	come	VBZ
40119	343	9	about	about	IN
40119	343	10	that	that	IN
40119	343	11	each	each	DT
40119	343	12	elementary	elementary	JJ
40119	343	13	portion	portion	NN
40119	343	14	of	of	IN
40119	343	15	the	the	DT
40119	343	16	retina	retina	NNP
40119	343	17	--	--	:
40119	343	18	at	at	IN
40119	343	19	least	least	JJS
40119	343	20	in	in	IN
40119	343	21	its	-PRON-	PRP$
40119	343	22	central	central	JJ
40119	343	23	region	region	NN
40119	343	24	--	--	:
40119	343	25	has	have	VBZ
40119	343	26	the	the	DT
40119	343	27	power	power	NN
40119	343	28	of	of	IN
40119	343	29	distinguishing	distinguish	VBG
40119	343	30	so	so	RB
40119	343	31	many	many	JJ
40119	343	32	hundreds	hundred	NNS
40119	343	33	of	of	IN
40119	343	34	different	different	JJ
40119	343	35	hues	hue	NNS
40119	343	36	.	.	.
40119	344	1	It	-PRON-	PRP
40119	344	2	is	be	VBZ
40119	344	3	incredible	incredible	JJ
40119	344	4	that	that	IN
40119	344	5	every	every	DT
40119	344	6	little	little	JJ
40119	344	7	area	area	NN
40119	344	8	of	of	IN
40119	344	9	microscopic	microscopic	JJ
40119	344	10	dimensions	dimension	NNS
40119	344	11	should	should	MD
40119	344	12	be	be	VB
40119	344	13	furnished	furnish	VBN
40119	344	14	with	with	IN
40119	344	15	such	such	PDT
40119	344	16	a	a	DT
40119	344	17	multitude	multitude	NN
40119	344	18	of	of	IN
40119	344	19	independent	independent	JJ
40119	344	20	organs	organ	NNS
40119	344	21	as	as	IN
40119	344	22	would	would	MD
40119	344	23	be	be	VB
40119	344	24	necessary	necessary	JJ
40119	344	25	if	if	IN
40119	344	26	each	each	DT
40119	344	27	of	of	IN
40119	344	28	the	the	DT
40119	344	29	many	many	JJ
40119	344	30	colours	colour	NNS
40119	344	31	met	meet	VBD
40119	344	32	with	with	IN
40119	344	33	in	in	IN
40119	344	34	nature	nature	NN
40119	344	35	required	require	VBN
40119	344	36	a	a	DT
40119	344	37	separate	separate	JJ
40119	344	38	organ	organ	NN
40119	344	39	for	for	IN
40119	344	40	its	-PRON-	PRP$
40119	344	41	perception	perception	NN
40119	344	42	;	;	:
40119	344	43	and	and	CC
40119	344	44	it	-PRON-	PRP
40119	344	45	is	be	VBZ
40119	344	46	not	not	RB
40119	344	47	necessary	necessary	JJ
40119	344	48	to	to	TO
40119	344	49	suppose	suppose	VB
40119	344	50	anything	anything	NN
40119	344	51	of	of	IN
40119	344	52	the	the	DT
40119	344	53	kind	kind	NN
40119	344	54	.	.	.
40119	345	1	Experiment	experiment	NN
40119	345	2	shows	show	VBZ
40119	345	3	that	that	IN
40119	345	4	all	all	PDT
40119	345	5	the	the	DT
40119	345	6	various	various	JJ
40119	345	7	hues	hue	NNS
40119	345	8	of	of	IN
40119	345	9	the	the	DT
40119	345	10	spectrum	spectrum	NN
40119	345	11	,	,	,
40119	345	12	as	as	RB
40119	345	13	well	well	RB
40119	345	14	as	as	IN
40119	345	15	all	all	DT
40119	345	16	(	(	-LRB-
40119	345	17	including	include	VBG
40119	345	18	white	white	JJ
40119	345	19	)	)	-RRB-
40119	345	20	that	that	WDT
40119	345	21	can	can	MD
40119	345	22	be	be	VB
40119	345	23	formed	form	VBN
40119	345	24	from	from	IN
40119	345	25	their	-PRON-	PRP$
40119	345	26	mixture	mixture	NN
40119	345	27	,	,	,
40119	345	28	may	may	MD
40119	345	29	be	be	VB
40119	345	30	derived	derive	VBN
40119	345	31	from	from	IN
40119	345	32	no	no	DT
40119	345	33	more	more	JJR
40119	345	34	than	than	IN
40119	345	35	three	three	CD
40119	345	36	distinct	distinct	JJ
40119	345	37	colours	colour	NNS
40119	345	38	.	.	.
40119	346	1	There	there	EX
40119	346	2	are	be	VBP
40119	346	3	,	,	,
40119	346	4	in	in	IN
40119	346	5	fact	fact	NN
40119	346	6	,	,	,
40119	346	7	an	an	DT
40119	346	8	indefinite	indefinite	JJ
40119	346	9	number	number	NN
40119	346	10	of	of	IN
40119	346	11	triads	triad	NNS
40119	346	12	of	of	IN
40119	346	13	colours	colour	NNS
40119	346	14	which	which	WDT
40119	346	15	,	,	,
40119	346	16	in	in	IN
40119	346	17	suitable	suitable	JJ
40119	346	18	combinations	combination	NNS
40119	346	19	,	,	,
40119	346	20	are	be	VBP
40119	346	21	capable	capable	JJ
40119	346	22	of	of	IN
40119	346	23	producing	produce	VBG
40119	346	24	the	the	DT
40119	346	25	sensation	sensation	NN
40119	346	26	of	of	IN
40119	346	27	every	every	DT
40119	346	28	tone	tone	NN
40119	346	29	,	,	,
40119	346	30	tint	tint	NN
40119	346	31	,	,	,
40119	346	32	and	and	CC
40119	346	33	shade	shade	NN
40119	346	34	of	of	IN
40119	346	35	colour	colour	NN
40119	346	36	which	which	WDT
40119	346	37	the	the	DT
40119	346	38	eye	eye	NN
40119	346	39	of	of	IN
40119	346	40	man	man	NN
40119	346	41	has	have	VBZ
40119	346	42	ever	ever	RB
40119	346	43	beheld	behold	VBN
40119	346	44	.	.	.
40119	347	1	Old	old	JJ
40119	347	2	-	-	HYPH
40119	347	3	fashioned	fashioned	JJ
40119	347	4	books	book	NNS
40119	347	5	,	,	,
40119	347	6	such	such	JJ
40119	347	7	as	as	IN
40119	347	8	an	an	DT
40119	347	9	early	early	JJ
40119	347	10	edition	edition	NN
40119	347	11	of	of	IN
40119	347	12	Ganot	Ganot	NNP
40119	347	13	's	's	POS
40119	347	14	"	"	``
40119	347	15	Physics	Physics	NNP
40119	347	16	,	,	,
40119	347	17	"	"	''
40119	347	18	tell	tell	VB
40119	347	19	us	-PRON-	PRP
40119	347	20	that	that	IN
40119	347	21	the	the	DT
40119	347	22	three	three	CD
40119	347	23	"	"	``
40119	347	24	primary	primary	JJ
40119	347	25	"	"	''
40119	347	26	colours	colour	NNS
40119	347	27	are	be	VBP
40119	347	28	red	red	JJ
40119	347	29	,	,	,
40119	347	30	yellow	yellow	JJ
40119	347	31	,	,	,
40119	347	32	and	and	CC
40119	347	33	blue	blue	JJ
40119	347	34	,	,	,
40119	347	35	and	and	CC
40119	347	36	that	that	IN
40119	347	37	all	all	DT
40119	347	38	others	other	NNS
40119	347	39	are	be	VBP
40119	347	40	produced	produce	VBN
40119	347	41	by	by	IN
40119	347	42	mixtures	mixture	NNS
40119	347	43	of	of	IN
40119	347	44	these	these	DT
40119	347	45	.	.	.
40119	348	1	This	this	DT
40119	348	2	was	be	VBD
40119	348	3	the	the	DT
40119	348	4	basis	basis	NN
40119	348	5	of	of	IN
40119	348	6	Sir	Sir	NNP
40119	348	7	David	David	NNP
40119	348	8	Brewster	Brewster	NNP
40119	348	9	's	's	POS
40119	348	10	theory	theory	NN
40119	348	11	,	,	,
40119	348	12	which	which	WDT
40119	348	13	attained	attain	VBD
40119	348	14	a	a	DT
40119	348	15	very	very	RB
40119	348	16	wide	wide	JJ
40119	348	17	popularity	popularity	NN
40119	348	18	,	,	,
40119	348	19	and	and	CC
40119	348	20	even	even	RB
40119	348	21	at	at	IN
40119	348	22	the	the	DT
40119	348	23	present	present	JJ
40119	348	24	time	time	NN
40119	348	25	is	be	VBZ
40119	348	26	held	hold	VBN
40119	348	27	as	as	IN
40119	348	28	an	an	DT
40119	348	29	article	article	NN
40119	348	30	of	of	IN
40119	348	31	faith	faith	NN
40119	348	32	among	among	IN
40119	348	33	the	the	DT
40119	348	34	great	great	JJ
40119	348	35	majority	majority	NN
40119	348	36	of	of	IN
40119	348	37	intelligent	intelligent	JJ
40119	348	38	persons	person	NNS
40119	348	39	who	who	WP
40119	348	40	have	have	VBP
40119	348	41	not	not	RB
40119	348	42	paid	pay	VBN
40119	348	43	any	any	DT
40119	348	44	special	special	JJ
40119	348	45	attention	attention	NN
40119	348	46	to	to	IN
40119	348	47	science	science	NN
40119	348	48	.	.	.
40119	349	1	But	but	CC
40119	349	2	it	-PRON-	PRP
40119	349	3	is	be	VBZ
40119	349	4	not	not	RB
40119	349	5	true	true	JJ
40119	349	6	.	.	.
40119	350	1	A	a	DT
40119	350	2	fatal	fatal	JJ
40119	350	3	objection	objection	NN
40119	350	4	to	to	IN
40119	350	5	it	-PRON-	PRP
40119	350	6	is	be	VBZ
40119	350	7	the	the	DT
40119	350	8	well	well	RB
40119	350	9	-	-	HYPH
40119	350	10	ascertained	ascertain	VBN
40119	350	11	fact	fact	NN
40119	350	12	that	that	IN
40119	350	13	no	no	DT
40119	350	14	combination	combination	NN
40119	350	15	of	of	IN
40119	350	16	red	red	JJ
40119	350	17	,	,	,
40119	350	18	yellow	yellow	JJ
40119	350	19	,	,	,
40119	350	20	and	and	CC
40119	350	21	blue	blue	JJ
40119	350	22	,	,	,
40119	350	23	or	or	CC
40119	350	24	of	of	IN
40119	350	25	any	any	DT
40119	350	26	two	two	CD
40119	350	27	of	of	IN
40119	350	28	them	-PRON-	PRP
40119	350	29	,	,	,
40119	350	30	such	such	JJ
40119	350	31	as	as	IN
40119	350	32	blue	blue	JJ
40119	350	33	and	and	CC
40119	350	34	yellow	yellow	JJ
40119	350	35	,	,	,
40119	350	36	for	for	IN
40119	350	37	example	example	NN
40119	350	38	,	,	,
40119	350	39	will	will	MD
40119	350	40	produce	produce	VB
40119	350	41	green	green	JJ
40119	350	42	.	.	.
40119	351	1	Yet	yet	CC
40119	351	2	every	every	DT
40119	351	3	painter	painter	NN
40119	351	4	knows	know	VBZ
40119	351	5	that	that	IN
40119	351	6	if	if	IN
40119	351	7	he	-PRON-	PRP
40119	351	8	mixes	mix	VBZ
40119	351	9	blue	blue	JJ
40119	351	10	and	and	CC
40119	351	11	yellow	yellow	JJ
40119	351	12	pigments	pigment	NNS
40119	351	13	together	together	RB
40119	351	14	he	-PRON-	PRP
40119	351	15	gets	get	VBZ
40119	351	16	green	green	JJ
40119	351	17	.	.	.
40119	352	1	That	that	DT
40119	352	2	is	be	VBZ
40119	352	3	one	one	CD
40119	352	4	of	of	IN
40119	352	5	the	the	DT
40119	352	6	first	first	JJ
40119	352	7	things	thing	NNS
40119	352	8	that	that	WDT
40119	352	9	a	a	DT
40119	352	10	child	child	NN
40119	352	11	learns	learn	VBZ
40119	352	12	when	when	WRB
40119	352	13	he	-PRON-	PRP
40119	352	14	is	be	VBZ
40119	352	15	allowed	allow	VBN
40119	352	16	to	to	TO
40119	352	17	play	play	VB
40119	352	18	with	with	IN
40119	352	19	a	a	DT
40119	352	20	box	box	NN
40119	352	21	of	of	IN
40119	352	22	water	water	NN
40119	352	23	-	-	HYPH
40119	352	24	colours	colour	NNS
40119	352	25	,	,	,
40119	352	26	and	and	CC
40119	352	27	no	no	RB
40119	352	28	doubt	doubt	RB
40119	352	29	Brewster	Brewster	NNP
40119	352	30	was	be	VBD
40119	352	31	misled	mislead	VBN
40119	352	32	by	by	IN
40119	352	33	the	the	DT
40119	352	34	fact	fact	NN
40119	352	35	.	.	.
40119	353	1	The	the	DT
40119	353	2	truth	truth	NN
40119	353	3	is	be	VBZ
40119	353	4	,	,	,
40119	353	5	that	that	IN
40119	353	6	the	the	DT
40119	353	7	colours	colour	NNS
40119	353	8	of	of	IN
40119	353	9	all	all	DT
40119	353	10	,	,	,
40119	353	11	or	or	CC
40119	353	12	almost	almost	RB
40119	353	13	all	all	DT
40119	353	14	,	,	,
40119	353	15	known	know	VBN
40119	353	16	blue	blue	JJ
40119	353	17	and	and	CC
40119	353	18	yellow	yellow	JJ
40119	353	19	pigments	pigment	NNS
40119	353	20	happen	happen	VBP
40119	353	21	to	to	TO
40119	353	22	be	be	VB
40119	353	23	composite	composite	JJ
40119	353	24	.	.	.
40119	354	1	An	an	DT
40119	354	2	ordinary	ordinary	JJ
40119	354	3	blue	blue	JJ
40119	354	4	paint	paint	NN
40119	354	5	reflects	reflect	VBZ
40119	354	6	not	not	RB
40119	354	7	only	only	RB
40119	354	8	blue	blue	JJ
40119	354	9	light	light	NN
40119	354	10	,	,	,
40119	354	11	but	but	CC
40119	354	12	a	a	DT
40119	354	13	large	large	JJ
40119	354	14	quantity	quantity	NN
40119	354	15	of	of	IN
40119	354	16	green	green	JJ
40119	354	17	as	as	RB
40119	354	18	well	well	RB
40119	354	19	;	;	:
40119	354	20	while	while	IN
40119	354	21	an	an	DT
40119	354	22	ordinary	ordinary	JJ
40119	354	23	yellow	yellow	JJ
40119	354	24	paint	paint	NN
40119	354	25	reflects	reflect	VBZ
40119	354	26	a	a	DT
40119	354	27	large	large	JJ
40119	354	28	quantity	quantity	NN
40119	354	29	of	of	IN
40119	354	30	green	green	JJ
40119	354	31	light	light	NN
40119	354	32	in	in	IN
40119	354	33	addition	addition	NN
40119	354	34	to	to	IN
40119	354	35	yellow	yellow	NN
40119	354	36	.	.	.
40119	355	1	When	when	WRB
40119	355	2	such	such	JJ
40119	355	3	paints	paint	NNS
40119	355	4	are	be	VBP
40119	355	5	mixed	mix	VBN
40119	355	6	together	together	RB
40119	355	7	,	,	,
40119	355	8	the	the	DT
40119	355	9	blue	blue	JJ
40119	355	10	and	and	CC
40119	355	11	yellow	yellow	JJ
40119	355	12	hues	hue	NNS
40119	355	13	neutralise	neutralise	VBP
40119	355	14	one	one	CD
40119	355	15	another	another	DT
40119	355	16	,	,	,
40119	355	17	and	and	CC
40119	355	18	only	only	RB
40119	355	19	the	the	DT
40119	355	20	green	green	NN
40119	355	21	,	,	,
40119	355	22	which	which	WDT
40119	355	23	is	be	VBZ
40119	355	24	common	common	JJ
40119	355	25	to	to	IN
40119	355	26	both	both	DT
40119	355	27	,	,	,
40119	355	28	remains	remain	VBZ
40119	355	29	.	.	.
40119	356	1	The	the	DT
40119	356	2	spectrum	spectrum	NN
40119	356	3	apparatus	apparatus	NN
40119	356	4	will	will	MD
40119	356	5	make	make	VB
40119	356	6	this	this	DT
40119	356	7	clearer	clear	JJR
40119	356	8	.	.	.
40119	357	1	Hold	hold	VB
40119	357	2	a	a	DT
40119	357	3	piece	piece	NN
40119	357	4	of	of	IN
40119	357	5	bright	bright	JJ
40119	357	6	blue	blue	JJ
40119	357	7	glass	glass	NN
40119	357	8	before	before	IN
40119	357	9	the	the	DT
40119	357	10	slit	slit	NN
40119	357	11	;	;	:
40119	357	12	the	the	DT
40119	357	13	light	light	NN
40119	357	14	passing	pass	VBG
40119	357	15	through	through	IN
40119	357	16	the	the	DT
40119	357	17	glass	glass	NN
40119	357	18	will	will	MD
40119	357	19	be	be	VB
40119	357	20	analysed	analyse	VBN
40119	357	21	by	by	IN
40119	357	22	the	the	DT
40119	357	23	prism	prism	NN
40119	357	24	,	,	,
40119	357	25	and	and	CC
40119	357	26	you	-PRON-	PRP
40119	357	27	will	will	MD
40119	357	28	see	see	VB
40119	357	29	that	that	IN
40119	357	30	it	-PRON-	PRP
40119	357	31	really	really	RB
40119	357	32	contains	contain	VBZ
40119	357	33	almost	almost	RB
40119	357	34	as	as	RB
40119	357	35	much	much	JJ
40119	357	36	green	green	JJ
40119	357	37	as	as	IN
40119	357	38	blue	blue	JJ
40119	357	39	.	.	.
40119	358	1	If	if	IN
40119	358	2	a	a	DT
40119	358	3	yellow	yellow	JJ
40119	358	4	glass	glass	NN
40119	358	5	is	be	VBZ
40119	358	6	substituted	substitute	VBN
40119	358	7	,	,	,
40119	358	8	not	not	RB
40119	358	9	only	only	RB
40119	358	10	will	will	MD
40119	358	11	yellow	yellow	VB
40119	358	12	light	light	NN
40119	358	13	be	be	VB
40119	358	14	transmitted	transmit	VBN
40119	358	15	,	,	,
40119	358	16	but	but	CC
40119	358	17	,	,	,
40119	358	18	as	as	IN
40119	358	19	before	before	RB
40119	358	20	,	,	,
40119	358	21	a	a	DT
40119	358	22	considerable	considerable	JJ
40119	358	23	quantity	quantity	NN
40119	358	24	of	of	IN
40119	358	25	green	green	NN
40119	358	26	.	.	.
40119	359	1	If	if	IN
40119	359	2	now	now	RB
40119	359	3	both	both	DT
40119	359	4	glasses	glass	NNS
40119	359	5	be	be	VB
40119	359	6	placed	place	VBN
40119	359	7	together	together	RB
40119	359	8	before	before	IN
40119	359	9	the	the	DT
40119	359	10	slit	slit	NN
40119	359	11	,	,	,
40119	359	12	what	what	WP
40119	359	13	will	will	MD
40119	359	14	happen	happen	VB
40119	359	15	?	?	.
40119	360	1	The	the	DT
40119	360	2	yellow	yellow	JJ
40119	360	3	glass	glass	NN
40119	360	4	will	will	MD
40119	360	5	stop	stop	VB
40119	360	6	the	the	DT
40119	360	7	blue	blue	JJ
40119	360	8	light	light	NN
40119	360	9	transmitted	transmit	VBN
40119	360	10	by	by	IN
40119	360	11	the	the	DT
40119	360	12	blue	blue	JJ
40119	360	13	glass	glass	NN
40119	360	14	,	,	,
40119	360	15	the	the	DT
40119	360	16	blue	blue	JJ
40119	360	17	glass	glass	NN
40119	360	18	will	will	MD
40119	360	19	stop	stop	VB
40119	360	20	the	the	DT
40119	360	21	yellow	yellow	JJ
40119	360	22	light	light	NN
40119	360	23	transmitted	transmit	VBN
40119	360	24	by	by	IN
40119	360	25	the	the	DT
40119	360	26	yellow	yellow	JJ
40119	360	27	glass	glass	NN
40119	360	28	,	,	,
40119	360	29	and	and	CC
40119	360	30	only	only	RB
40119	360	31	the	the	DT
40119	360	32	green	green	JJ
40119	360	33	light	light	NN
40119	360	34	which	which	WDT
40119	360	35	both	both	DT
40119	360	36	glasses	glass	NNS
40119	360	37	have	have	VBP
40119	360	38	the	the	DT
40119	360	39	power	power	NN
40119	360	40	of	of	IN
40119	360	41	transmitting	transmitting	NN
40119	360	42	will	will	MD
40119	360	43	pass	pass	VB
40119	360	44	through	through	IN
40119	360	45	unimpeded	unimpeded	JJ
40119	360	46	,	,	,
40119	360	47	forming	form	VBG
40119	360	48	a	a	DT
40119	360	49	band	band	NN
40119	360	50	of	of	IN
40119	360	51	pure	pure	JJ
40119	360	52	green	green	JJ
40119	360	53	colour	colour	NN
40119	360	54	upon	upon	IN
40119	360	55	the	the	DT
40119	360	56	screen	screen	NN
40119	360	57	.	.	.
40119	361	1	The	the	DT
40119	361	2	combination	combination	NN
40119	361	3	of	of	IN
40119	361	4	simple	simple	JJ
40119	361	5	blue	blue	JJ
40119	361	6	and	and	CC
40119	361	7	yellow	yellow	JJ
40119	361	8	lights	light	NNS
40119	361	9	of	of	IN
40119	361	10	suitable	suitable	JJ
40119	361	11	relative	relative	JJ
40119	361	12	luminosities	luminosity	NNS
40119	361	13	results	result	NNS
40119	361	14	in	in	IN
40119	361	15	the	the	DT
40119	361	16	formation	formation	NN
40119	361	17	of	of	IN
40119	361	18	white	white	JJ
40119	361	19	or	or	CC
40119	361	20	neutral	neutral	JJ
40119	361	21	light	light	NN
40119	361	22	.	.	.
40119	362	1	If	if	IN
40119	362	2	the	the	DT
40119	362	3	blue	blue	NN
40119	362	4	is	be	VBZ
40119	362	5	a	a	DT
40119	362	6	little	little	JJ
40119	362	7	in	in	IN
40119	362	8	excess	excess	NN
40119	362	9	,	,	,
40119	362	10	the	the	DT
40119	362	11	combined	combine	VBN
40119	362	12	light	light	NN
40119	362	13	will	will	MD
40119	362	14	be	be	VB
40119	362	15	of	of	IN
40119	362	16	a	a	DT
40119	362	17	bluish	bluish	JJ
40119	362	18	tint	tint	NN
40119	362	19	;	;	:
40119	362	20	if	if	IN
40119	362	21	the	the	DT
40119	362	22	yellow	yellow	NN
40119	362	23	is	be	VBZ
40119	362	24	in	in	IN
40119	362	25	excess	excess	NN
40119	362	26	,	,	,
40119	362	27	the	the	DT
40119	362	28	combination	combination	NN
40119	362	29	will	will	MD
40119	362	30	have	have	VB
40119	362	31	a	a	DT
40119	362	32	yellowish	yellowish	JJ
40119	362	33	tint	tint	NN
40119	362	34	.	.	.
40119	363	1	It	-PRON-	PRP
40119	363	2	will	will	MD
40119	363	3	never	never	RB
40119	363	4	contain	contain	VB
40119	363	5	any	any	DT
40119	363	6	trace	trace	NN
40119	363	7	of	of	IN
40119	363	8	green	green	JJ
40119	363	9	.	.	.
40119	364	1	The	the	DT
40119	364	2	combination	combination	NN
40119	364	3	of	of	IN
40119	364	4	simple	simple	JJ
40119	364	5	spectral	spectral	JJ
40119	364	6	blue	blue	JJ
40119	364	7	and	and	CC
40119	364	8	yellow	yellow	JJ
40119	364	9	is	be	VBZ
40119	364	10	easily	easily	RB
40119	364	11	effected	effect	VBN
40119	364	12	by	by	IN
40119	364	13	the	the	DT
40119	364	14	colour	colour	NN
40119	364	15	-	-	HYPH
40119	364	16	patch	patch	NN
40119	364	17	apparatus	apparatus	NN
40119	364	18	,	,	,
40119	364	19	and	and	CC
40119	364	20	the	the	DT
40119	364	21	result	result	NN
40119	364	22	will	will	MD
40119	364	23	be	be	VB
40119	364	24	found	find	VBN
40119	364	25	to	to	TO
40119	364	26	bear	bear	VB
40119	364	27	out	out	RP
40119	364	28	what	what	WP
40119	364	29	has	have	VBZ
40119	364	30	been	be	VBN
40119	364	31	said	say	VBN
40119	364	32	.	.	.
40119	365	1	Since	since	IN
40119	365	2	,	,	,
40119	365	3	then	then	RB
40119	365	4	,	,	,
40119	365	5	no	no	DT
40119	365	6	mixture	mixture	NN
40119	365	7	of	of	IN
40119	365	8	red	red	JJ
40119	365	9	,	,	,
40119	365	10	yellow	yellow	JJ
40119	365	11	,	,	,
40119	365	12	and	and	CC
40119	365	13	blue	blue	JJ
40119	365	14	,	,	,
40119	365	15	or	or	CC
40119	365	16	of	of	IN
40119	365	17	any	any	DT
40119	365	18	two	two	CD
40119	365	19	of	of	IN
40119	365	20	them	-PRON-	PRP
40119	365	21	,	,	,
40119	365	22	will	will	MD
40119	365	23	produce	produce	VB
40119	365	24	green	green	JJ
40119	365	25	,	,	,
40119	365	26	we	-PRON-	PRP
40119	365	27	can	can	MD
40119	365	28	not	not	RB
40119	365	29	regard	regard	VB
40119	365	30	these	these	DT
40119	365	31	colours	colour	NNS
40119	365	32	as	as	IN
40119	365	33	being	be	VBG
40119	365	34	,	,	,
40119	365	35	in	in	IN
40119	365	36	Brewster	Brewster	NNP
40119	365	37	's	's	POS
40119	365	38	sense	sense	NN
40119	365	39	of	of	IN
40119	365	40	the	the	DT
40119	365	41	term	term	NN
40119	365	42	,	,	,
40119	365	43	primary	primary	JJ
40119	365	44	ones	one	NNS
40119	365	45	.	.	.
40119	366	1	But	but	CC
40119	366	2	it	-PRON-	PRP
40119	366	3	is	be	VBZ
40119	366	4	quite	quite	RB
40119	366	5	possible	possible	JJ
40119	366	6	to	to	TO
40119	366	7	find	find	VB
40119	366	8	a	a	DT
40119	366	9	group	group	NN
40119	366	10	of	of	IN
40119	366	11	three	three	CD
40119	366	12	different	different	JJ
40119	366	13	hues	hue	NNS
40119	366	14	--	--	:
40119	366	15	and	and	CC
40119	366	16	indeed	indeed	RB
40119	366	17	many	many	JJ
40119	366	18	such	such	JJ
40119	366	19	groups	group	NNS
40119	366	20	--	--	:
40119	366	21	which	which	WDT
40119	366	22	when	when	WRB
40119	366	23	made	make	VBN
40119	366	24	to	to	TO
40119	366	25	act	act	VB
40119	366	26	upon	upon	IN
40119	366	27	the	the	DT
40119	366	28	eye	eye	NN
40119	366	29	simultaneously	simultaneously	RB
40119	366	30	and	and	CC
40119	366	31	in	in	IN
40119	366	32	the	the	DT
40119	366	33	right	right	JJ
40119	366	34	proportions	proportion	NNS
40119	366	35	can	can	MD
40119	366	36	give	give	VB
40119	366	37	rise	rise	NN
40119	366	38	to	to	IN
40119	366	39	the	the	DT
40119	366	40	sensation	sensation	NN
40119	366	41	of	of	IN
40119	366	42	any	any	DT
40119	366	43	colour	colour	NN
40119	366	44	whatever	whatever	WDT
40119	366	45	.	.	.
40119	367	1	Now	now	RB
40119	367	2	this	this	DT
40119	367	3	experimental	experimental	JJ
40119	367	4	fact	fact	NN
40119	367	5	is	be	VBZ
40119	367	6	obviously	obviously	RB
40119	367	7	suggestive	suggestive	JJ
40119	367	8	of	of	IN
40119	367	9	a	a	DT
40119	367	10	possible	possible	JJ
40119	367	11	converse	converse	NN
40119	367	12	,	,	,
40119	367	13	namely	namely	RB
40119	367	14	,	,	,
40119	367	15	that	that	IN
40119	367	16	almost	almost	RB
40119	367	17	every	every	DT
40119	367	18	colour	colour	NN
40119	367	19	sensation	sensation	NN
40119	367	20	may	may	MD
40119	367	21	in	in	IN
40119	367	22	reality	reality	NN
40119	367	23	be	be	VB
40119	367	24	a	a	DT
40119	367	25	compound	compound	NN
40119	367	26	one	one	CD
40119	367	27	,	,	,
40119	367	28	the	the	DT
40119	367	29	resultant	resultant	NN
40119	367	30	of	of	IN
40119	367	31	not	not	RB
40119	367	32	more	more	JJR
40119	367	33	than	than	IN
40119	367	34	three	three	CD
40119	367	35	simple	simple	JJ
40119	367	36	sensations	sensation	NNS
40119	367	37	.	.	.
40119	368	1	Assuming	assume	VBG
40119	368	2	this	this	DT
40119	368	3	to	to	TO
40119	368	4	be	be	VB
40119	368	5	so	so	RB
40119	368	6	,	,	,
40119	368	7	it	-PRON-	PRP
40119	368	8	is	be	VBZ
40119	368	9	evident	evident	JJ
40119	368	10	that	that	IN
40119	368	11	if	if	IN
40119	368	12	each	each	DT
40119	368	13	elementary	elementary	JJ
40119	368	14	area	area	NN
40119	368	15	of	of	IN
40119	368	16	the	the	DT
40119	368	17	retina	retina	NNP
40119	368	18	were	be	VBD
40119	368	19	provided	provide	VBN
40119	368	20	with	with	IN
40119	368	21	only	only	RB
40119	368	22	three	three	CD
40119	368	23	suitable	suitable	JJ
40119	368	24	colour	colour	NN
40119	368	25	organs	organ	NNS
40119	368	26	,	,	,
40119	368	27	nothing	nothing	NN
40119	368	28	more	more	JJR
40119	368	29	would	would	MD
40119	368	30	be	be	VB
40119	368	31	requisite	requisite	JJ
40119	368	32	for	for	IN
40119	368	33	the	the	DT
40119	368	34	perception	perception	NN
40119	368	35	of	of	IN
40119	368	36	an	an	DT
40119	368	37	indefinite	indefinite	JJ
40119	368	38	number	number	NN
40119	368	39	of	of	IN
40119	368	40	distinct	distinct	JJ
40119	368	41	colours	colour	NNS
40119	368	42	.	.	.
40119	369	1	Such	such	PDT
40119	369	2	a	a	DT
40119	369	3	hypothesis	hypothesis	NN
40119	369	4	was	be	VBD
40119	369	5	first	first	RB
40119	369	6	proposed	propose	VBN
40119	369	7	by	by	IN
40119	369	8	Thomas	Thomas	NNP
40119	369	9	Young	Young	NNP
40119	369	10	at	at	IN
40119	369	11	the	the	DT
40119	369	12	beginning	beginning	NN
40119	369	13	of	of	IN
40119	369	14	the	the	DT
40119	369	15	present	present	JJ
40119	369	16	century	century	NN
40119	369	17	;	;	:
40119	369	18	but	but	CC
40119	369	19	it	-PRON-	PRP
40119	369	20	came	come	VBD
40119	369	21	before	before	IN
40119	369	22	its	-PRON-	PRP$
40119	369	23	time	time	NN
40119	369	24	and	and	CC
40119	369	25	met	meet	VBD
40119	369	26	with	with	IN
40119	369	27	no	no	DT
40119	369	28	attention	attention	NN
40119	369	29	until	until	IN
40119	369	30	fifty	fifty	CD
40119	369	31	years	year	NNS
40119	369	32	later	later	RB
40119	369	33	,	,	,
40119	369	34	when	when	WRB
40119	369	35	it	-PRON-	PRP
40119	369	36	was	be	VBD
40119	369	37	unearthed	unearth	VBN
40119	369	38	by	by	IN
40119	369	39	the	the	DT
40119	369	40	distinguished	distinguished	JJ
40119	369	41	physicist	physicist	NN
40119	369	42	and	and	CC
40119	369	43	physiologist	physiologist	NN
40119	369	44	,	,	,
40119	369	45	Helmholtz	Helmholtz	NNP
40119	369	46	,	,	,
40119	369	47	who	who	WP
40119	369	48	accorded	accord	VBD
40119	369	49	to	to	IN
40119	369	50	it	-PRON-	PRP
40119	369	51	his	-PRON-	PRP$
40119	369	52	powerful	powerful	JJ
40119	369	53	support	support	NN
40119	369	54	and	and	CC
40119	369	55	modified	modify	VBD
40119	369	56	it	-PRON-	PRP
40119	369	57	in	in	IN
40119	369	58	one	one	CD
40119	369	59	or	or	CC
40119	369	60	two	two	CD
40119	369	61	important	important	JJ
40119	369	62	details	detail	NNS
40119	369	63	.	.	.
40119	370	1	[	[	-LRB-
40119	370	2	Illustration	illustration	NN
40119	370	3	:	:	:
40119	370	4	_	_	NNP
40119	370	5	Fig	Fig	NNP
40119	370	6	.	.	.
40119	371	1	6.--Helmholtz	6.--Helmholtz	NNP
40119	371	2	's	's	POS
40119	371	3	Curves	curve	NNS
40119	371	4	of	of	IN
40119	371	5	Colour	Colour	NNP
40119	371	6	Perception	Perception	NNP
40119	371	7	.	.	.
40119	371	8	_	_	NNP
40119	371	9	]	]	-RRB-
40119	371	10	According	accord	VBG
40119	371	11	to	to	IN
40119	371	12	the	the	DT
40119	371	13	Young	Young	NNP
40119	371	14	-	-	HYPH
40119	371	15	Helmholtz	Helmholtz	NNP
40119	371	16	theory	theory	NN
40119	371	17	,	,	,
40119	371	18	as	as	IN
40119	371	19	it	-PRON-	PRP
40119	371	20	is	be	VBZ
40119	371	21	now	now	RB
40119	371	22	called	call	VBN
40119	371	23	,	,	,
40119	371	24	there	there	EX
40119	371	25	are	be	VBP
40119	371	26	three	three	CD
40119	371	27	different	different	JJ
40119	371	28	kinds	kind	NNS
40119	371	29	of	of	IN
40119	371	30	nerve	nerve	NN
40119	371	31	-	-	HYPH
40119	371	32	fibres	fibre	NNS
40119	371	33	distributed	distribute	VBN
40119	371	34	over	over	IN
40119	371	35	the	the	DT
40119	371	36	retina	retina	NNP
40119	371	37	.	.	.
40119	372	1	The	the	DT
40119	372	2	first	first	JJ
40119	372	3	,	,	,
40119	372	4	when	when	WRB
40119	372	5	separately	separately	RB
40119	372	6	stimulated	stimulate	VBD
40119	372	7	,	,	,
40119	372	8	produce	produce	VBP
40119	372	9	the	the	DT
40119	372	10	sensation	sensation	NN
40119	372	11	of	of	IN
40119	372	12	red	red	NN
40119	372	13	,	,	,
40119	372	14	the	the	DT
40119	372	15	second	second	JJ
40119	372	16	that	that	DT
40119	372	17	of	of	IN
40119	372	18	green	green	JJ
40119	372	19	,	,	,
40119	372	20	and	and	CC
40119	372	21	the	the	DT
40119	372	22	third	third	JJ
40119	372	23	that	that	DT
40119	372	24	of	of	IN
40119	372	25	violet	violet	NN
40119	372	26	.	.	.
40119	373	1	Light	light	NN
40119	373	2	having	have	VBG
40119	373	3	the	the	DT
40119	373	4	same	same	JJ
40119	373	5	wave	wave	NN
40119	373	6	-	-	HYPH
40119	373	7	length	length	NN
40119	373	8	as	as	IN
40119	373	9	the	the	DT
40119	373	10	extreme	extreme	JJ
40119	373	11	red	red	JJ
40119	373	12	rays	ray	NNS
40119	373	13	of	of	IN
40119	373	14	the	the	DT
40119	373	15	spectrum	spectrum	NN
40119	373	16	stimulates	stimulate	VBZ
40119	373	17	the	the	DT
40119	373	18	red	red	JJ
40119	373	19	nerve	nerve	NN
40119	373	20	-	-	HYPH
40119	373	21	fibres	fibre	NNS
40119	373	22	only	only	RB
40119	373	23	;	;	:
40119	373	24	that	that	IN
40119	373	25	having	have	VBG
40119	373	26	the	the	DT
40119	373	27	same	same	JJ
40119	373	28	wave	wave	NN
40119	373	29	-	-	HYPH
40119	373	30	length	length	NN
40119	373	31	as	as	IN
40119	373	32	the	the	DT
40119	373	33	extreme	extreme	JJ
40119	373	34	violet	violet	NN
40119	373	35	rays	ray	NNS
40119	373	36	stimulates	stimulate	VBZ
40119	373	37	the	the	DT
40119	373	38	violet	violet	NN
40119	373	39	nerve	nerve	NN
40119	373	40	-	-	HYPH
40119	373	41	fibres	fibre	NNS
40119	373	42	only	only	RB
40119	373	43	.	.	.
40119	374	1	Light	light	NN
40119	374	2	of	of	IN
40119	374	3	all	all	DT
40119	374	4	intermediate	intermediate	JJ
40119	374	5	wave	wave	NN
40119	374	6	-	-	HYPH
40119	374	7	lengths	length	NNS
40119	374	8	,	,	,
40119	374	9	corresponding	correspond	VBG
40119	374	10	to	to	IN
40119	374	11	the	the	DT
40119	374	12	orange	orange	JJ
40119	374	13	,	,	,
40119	374	14	yellow	yellow	JJ
40119	374	15	,	,	,
40119	374	16	green	green	JJ
40119	374	17	,	,	,
40119	374	18	and	and	CC
40119	374	19	blue	blue	JJ
40119	374	20	of	of	IN
40119	374	21	the	the	DT
40119	374	22	spectrum	spectrum	NN
40119	374	23	,	,	,
40119	374	24	stimulates	stimulate	VBZ
40119	374	25	all	all	DT
40119	374	26	three	three	CD
40119	374	27	sets	set	NNS
40119	374	28	of	of	IN
40119	374	29	nerve	nerve	NN
40119	374	30	-	-	HYPH
40119	374	31	fibres	fibre	NNS
40119	374	32	at	at	IN
40119	374	33	once	once	RB
40119	374	34	,	,	,
40119	374	35	but	but	CC
40119	374	36	in	in	IN
40119	374	37	different	different	JJ
40119	374	38	degrees	degree	NNS
40119	374	39	.	.	.
40119	375	1	The	the	DT
40119	375	2	proportionate	proportionate	NN
40119	375	3	stimulation	stimulation	NN
40119	375	4	of	of	IN
40119	375	5	the	the	DT
40119	375	6	red	red	JJ
40119	375	7	,	,	,
40119	375	8	green	green	JJ
40119	375	9	,	,	,
40119	375	10	and	and	CC
40119	375	11	violet	violet	NN
40119	375	12	nerves	nerve	NNS
40119	375	13	throughout	throughout	IN
40119	375	14	the	the	DT
40119	375	15	spectrum	spectrum	NN
40119	375	16	is	be	VBZ
40119	375	17	indicated	indicate	VBN
40119	375	18	in	in	IN
40119	375	19	Fig	Fig	NNP
40119	375	20	.	.	.
40119	376	1	6	6	CD
40119	376	2	,	,	,
40119	376	3	which	which	WDT
40119	376	4	is	be	VBZ
40119	376	5	derived	derive	VBN
40119	376	6	from	from	IN
40119	376	7	the	the	DT
40119	376	8	rough	rough	JJ
40119	376	9	sketch	sketch	NN
40119	376	10	first	first	RB
40119	376	11	given	give	VBN
40119	376	12	by	by	IN
40119	376	13	Helmholtz	Helmholtz	NNP
40119	376	14	.	.	.
40119	377	1	The	the	DT
40119	377	2	yellow	yellow	JJ
40119	377	3	rays	ray	NNS
40119	377	4	of	of	IN
40119	377	5	the	the	DT
40119	377	6	spectrum	spectrum	NN
40119	377	7	,	,	,
40119	377	8	it	-PRON-	PRP
40119	377	9	will	will	MD
40119	377	10	be	be	VB
40119	377	11	seen	see	VBN
40119	377	12	,	,	,
40119	377	13	excite	excite	VB
40119	377	14	the	the	DT
40119	377	15	red	red	JJ
40119	377	16	and	and	CC
40119	377	17	green	green	JJ
40119	377	18	nerves	nerve	NNS
40119	377	19	strongly	strongly	RB
40119	377	20	,	,	,
40119	377	21	and	and	CC
40119	377	22	the	the	DT
40119	377	23	violet	violet	NN
40119	377	24	feebly	feebly	RB
40119	377	25	;	;	:
40119	377	26	green	green	JJ
40119	377	27	light	light	NN
40119	377	28	excites	excite	VBZ
40119	377	29	the	the	DT
40119	377	30	green	green	JJ
40119	377	31	nerves	nerve	NNS
40119	377	32	strongly	strongly	RB
40119	377	33	,	,	,
40119	377	34	and	and	CC
40119	377	35	the	the	DT
40119	377	36	red	red	JJ
40119	377	37	and	and	CC
40119	377	38	violet	violet	NN
40119	377	39	moderately	moderately	RB
40119	377	40	;	;	:
40119	377	41	while	while	IN
40119	377	42	blue	blue	JJ
40119	377	43	light	light	NN
40119	377	44	excites	excite	VBZ
40119	377	45	the	the	DT
40119	377	46	green	green	JJ
40119	377	47	and	and	CC
40119	377	48	violet	violet	NN
40119	377	49	nerves	nerve	NNS
40119	377	50	strongly	strongly	RB
40119	377	51	,	,	,
40119	377	52	and	and	CC
40119	377	53	the	the	DT
40119	377	54	red	red	NNP
40119	377	55	feebly	feebly	NNP
40119	377	56	.	.	.
40119	378	1	[	[	-LRB-
40119	378	2	Illustration	illustration	NN
40119	378	3	:	:	:
40119	378	4	_	_	NNP
40119	378	5	Fig	Fig	NNP
40119	378	6	.	.	.
40119	379	1	7.--König	7.--König	NNP
40119	379	2	's	's	POS
40119	379	3	Curves	Curves	NNP
40119	379	4	.	.	.
40119	379	5	_	_	NNP
40119	379	6	]	]	-RRB-
40119	379	7	Fig	Fig	NNP
40119	379	8	.	.	.
40119	380	1	7	7	CD
40119	380	2	shows	show	VBZ
40119	380	3	another	another	DT
40119	380	4	set	set	NN
40119	380	5	of	of	IN
40119	380	6	curves	curve	NNS
40119	380	7	given	give	VBN
40119	380	8	more	more	RBR
40119	380	9	recently	recently	RB
40119	380	10	by	by	IN
40119	380	11	Dr.	Dr.	NNP
40119	380	12	König	König	NNP
40119	380	13	as	as	IN
40119	380	14	the	the	DT
40119	380	15	result	result	NN
40119	380	16	of	of	IN
40119	380	17	many	many	JJ
40119	380	18	thousands	thousand	NNS
40119	380	19	of	of	IN
40119	380	20	experiments	experiment	NNS
40119	380	21	made	make	VBN
40119	380	22	,	,	,
40119	380	23	not	not	RB
40119	380	24	only	only	RB
40119	380	25	upon	upon	IN
40119	380	26	persons	person	NNS
40119	380	27	whose	whose	WP$
40119	380	28	vision	vision	NN
40119	380	29	was	be	VBD
40119	380	30	normal	normal	JJ
40119	380	31	,	,	,
40119	380	32	but	but	CC
40119	380	33	also	also	RB
40119	380	34	upon	upon	IN
40119	380	35	some	some	DT
40119	380	36	who	who	WP
40119	380	37	were	be	VBD
40119	380	38	colour	colour	NN
40119	380	39	-	-	HYPH
40119	380	40	blind	blind	JJ
40119	380	41	.	.	.
40119	381	1	König	König	NNP
40119	381	2	found	find	VBD
40119	381	3	that	that	IN
40119	381	4	the	the	DT
40119	381	5	equations	equation	NNS
40119	381	6	he	-PRON-	PRP
40119	381	7	obtained	obtain	VBD
40119	381	8	were	be	VBD
40119	381	9	best	good	JJS
40119	381	10	satisfied	satisfied	JJ
40119	381	11	by	by	IN
40119	381	12	assuming	assume	VBG
40119	381	13	as	as	IN
40119	381	14	the	the	DT
40119	381	15	normal	normal	JJ
40119	381	16	fundamental	fundamental	JJ
40119	381	17	sensations	sensation	NNS
40119	381	18	a	a	DT
40119	381	19	purplish	purplish	JJ
40119	381	20	red	red	NN
40119	381	21	(	(	-LRB-
40119	381	22	not	not	RB
40119	381	23	to	to	TO
40119	381	24	be	be	VB
40119	381	25	found	find	VBN
40119	381	26	in	in	IN
40119	381	27	the	the	DT
40119	381	28	spectrum	spectrum	NN
40119	381	29	)	)	-RRB-
40119	381	30	,	,	,
40119	381	31	a	a	DT
40119	381	32	green	green	NN
40119	381	33	like	like	IN
40119	381	34	that	that	DT
40119	381	35	of	of	IN
40119	381	36	wave	wave	NN
40119	381	37	-	-	HYPH
40119	381	38	length	length	NN
40119	381	39	5050	5050	CD
40119	381	40	,	,	,
40119	381	41	and	and	CC
40119	381	42	a	a	DT
40119	381	43	blue	blue	NN
40119	381	44	like	like	IN
40119	381	45	that	that	DT
40119	381	46	of	of	IN
40119	381	47	wave	wave	NN
40119	381	48	-	-	HYPH
40119	381	49	length	length	NN
40119	381	50	4700	4700	CD
40119	381	51	approximately	approximately	RB
40119	381	52	,	,	,
40119	381	53	the	the	DT
40119	381	54	two	two	CD
40119	381	55	latter	latter	JJ
40119	381	56	,	,	,
40119	381	57	however	however	RB
40119	381	58	,	,	,
40119	381	59	being	be	VBG
40119	381	60	purer	purer	NN
40119	381	61	or	or	CC
40119	381	62	more	more	RBR
40119	381	63	saturated	saturate	VBN
40119	381	64	than	than	IN
40119	381	65	any	any	DT
40119	381	66	actual	actual	JJ
40119	381	67	spectrum	spectrum	NN
40119	381	68	colour	colour	NN
40119	381	69	.	.	.
40119	382	1	But	but	CC
40119	382	2	König	König	NNP
40119	382	3	's	's	POS
40119	382	4	curves	curve	NNS
40119	382	5	are	be	VBP
40119	382	6	not	not	RB
40119	382	7	consistent	consistent	JJ
40119	382	8	with	with	IN
40119	382	9	every	every	DT
40119	382	10	class	class	NN
40119	382	11	of	of	IN
40119	382	12	vision	vision	NN
40119	382	13	which	which	WDT
40119	382	14	he	-PRON-	PRP
40119	382	15	examined	examine	VBD
40119	382	16	,	,	,
40119	382	17	and	and	CC
40119	382	18	the	the	DT
40119	382	19	question	question	NN
40119	382	20	as	as	IN
40119	382	21	to	to	IN
40119	382	22	what	what	WP
40119	382	23	are	be	VBP
40119	382	24	the	the	DT
40119	382	25	true	true	JJ
40119	382	26	fundamental	fundamental	JJ
40119	382	27	colour	colour	NN
40119	382	28	-	-	HYPH
40119	382	29	sensations	sensation	NNS
40119	382	30	,	,	,
40119	382	31	if	if	IN
40119	382	32	such	such	JJ
40119	382	33	really	really	RB
40119	382	34	exist	exist	VBP
40119	382	35	at	at	RB
40119	382	36	all	all	RB
40119	382	37	,	,	,
40119	382	38	can	can	MD
40119	382	39	not	not	RB
40119	382	40	yet	yet	RB
40119	382	41	be	be	VB
40119	382	42	regarded	regard	VBN
40119	382	43	as	as	IN
40119	382	44	finally	finally	RB
40119	382	45	settled	settle	VBN
40119	382	46	.	.	.
40119	383	1	[	[	-LRB-
40119	383	2	6	6	CD
40119	383	3	]	]	-RRB-
40119	383	4	The	the	DT
40119	383	5	Young	Young	NNP
40119	383	6	-	-	HYPH
40119	383	7	Helmholtz	Helmholtz	NNP
40119	383	8	theory	theory	NN
40119	383	9	of	of	IN
40119	383	10	colour	colour	NN
40119	383	11	-	-	HYPH
40119	383	12	vision	vision	NN
40119	383	13	,	,	,
40119	383	14	whether	whether	IN
40119	383	15	or	or	CC
40119	383	16	not	not	RB
40119	383	17	it	-PRON-	PRP
40119	383	18	is	be	VBZ
40119	383	19	destined	destine	VBN
40119	383	20	in	in	IN
40119	383	21	the	the	DT
40119	383	22	future	future	NN
40119	383	23	to	to	TO
40119	383	24	be	be	VB
40119	383	25	superseded	supersede	VBN
40119	383	26	by	by	IN
40119	383	27	some	some	DT
40119	383	28	other	other	JJ
40119	383	29	,	,	,
40119	383	30	has	have	VBZ
40119	383	31	at	at	RB
40119	383	32	all	all	DT
40119	383	33	events	event	NNS
40119	383	34	proved	prove	VBD
40119	383	35	an	an	DT
40119	383	36	invaluable	invaluable	JJ
40119	383	37	guide	guide	NN
40119	383	38	in	in	IN
40119	383	39	experimental	experimental	JJ
40119	383	40	work	work	NN
40119	383	41	,	,	,
40119	383	42	and	and	CC
40119	383	43	there	there	EX
40119	383	44	are	be	VBP
40119	383	45	very	very	RB
40119	383	46	few	few	JJ
40119	383	47	colour	colour	NN
40119	383	48	phenomena	phenomenon	NNS
40119	383	49	of	of	IN
40119	383	50	which	which	WDT
40119	383	51	it	-PRON-	PRP
40119	383	52	is	be	VBZ
40119	383	53	not	not	RB
40119	383	54	competent	competent	JJ
40119	383	55	to	to	TO
40119	383	56	offer	offer	VB
40119	383	57	a	a	DT
40119	383	58	satisfactory	satisfactory	JJ
40119	383	59	explanation	explanation	NN
40119	383	60	.	.	.
40119	384	1	It	-PRON-	PRP
40119	384	2	has	have	VBZ
40119	384	3	at	at	IN
40119	384	4	present	present	JJ
40119	384	5	only	only	RB
40119	384	6	one	one	CD
40119	384	7	serious	serious	JJ
40119	384	8	rival	rival	NN
40119	384	9	--	--	:
40119	384	10	the	the	DT
40119	384	11	theory	theory	NN
40119	384	12	of	of	IN
40119	384	13	Hering	Hering	NNP
40119	384	14	,	,	,
40119	384	15	which	which	WDT
40119	384	16	,	,	,
40119	384	17	although	although	IN
40119	384	18	it	-PRON-	PRP
40119	384	19	seems	seem	VBZ
40119	384	20	to	to	TO
40119	384	21	be	be	VB
40119	384	22	curiously	curiously	RB
40119	384	23	attractive	attractive	JJ
40119	384	24	to	to	IN
40119	384	25	many	many	JJ
40119	384	26	physiologists	physiologist	NNS
40119	384	27	,	,	,
40119	384	28	can	can	MD
40119	384	29	hardly	hardly	RB
40119	384	30	be	be	VB
40119	384	31	said	say	VBN
40119	384	32	to	to	TO
40119	384	33	present	present	VB
40119	384	34	less	less	RBR
40119	384	35	serious	serious	JJ
40119	384	36	difficulties	difficulty	NNS
40119	384	37	than	than	IN
40119	384	38	that	that	DT
40119	384	39	which	which	WDT
40119	384	40	it	-PRON-	PRP
40119	384	41	seeks	seek	VBZ
40119	384	42	to	to	TO
40119	384	43	displace	displace	VB
40119	384	44	.	.	.
40119	385	1	Neither	neither	DT
40119	385	2	of	of	IN
40119	385	3	these	these	DT
40119	385	4	competing	compete	VBG
40119	385	5	theories	theory	NNS
40119	385	6	has	have	VBZ
40119	385	7	yet	yet	RB
40119	385	8	had	have	VBN
40119	385	9	its	-PRON-	PRP$
40119	385	10	fundamental	fundamental	JJ
40119	385	11	assumptions	assumption	NNS
40119	385	12	confirmed	confirm	VBN
40119	385	13	by	by	IN
40119	385	14	any	any	DT
40119	385	15	direct	direct	JJ
40119	385	16	evidence	evidence	NN
40119	385	17	,	,	,
40119	385	18	and	and	CC
40119	385	19	the	the	DT
40119	385	20	advantage	advantage	NN
40119	385	21	must	must	MD
40119	385	22	rest	rest	VB
40119	385	23	with	with	IN
40119	385	24	the	the	DT
40119	385	25	one	one	NN
40119	385	26	which	which	WDT
40119	385	27	best	good	JJS
40119	385	28	accords	accord	NNS
40119	385	29	with	with	IN
40119	385	30	the	the	DT
40119	385	31	facts	fact	NNS
40119	385	32	of	of	IN
40119	385	33	colour	colour	NN
40119	385	34	vision	vision	NN
40119	385	35	.	.	.
40119	386	1	In	in	IN
40119	386	2	my	-PRON-	PRP$
40119	386	3	judgment	judgment	NN
40119	386	4	the	the	DT
40119	386	5	older	old	JJR
40119	386	6	of	of	IN
40119	386	7	the	the	DT
40119	386	8	two	two	CD
40119	386	9	is	be	VBZ
40119	386	10	to	to	TO
40119	386	11	be	be	VB
40119	386	12	greatly	greatly	RB
40119	386	13	preferred	prefer	VBN
40119	386	14	as	as	IN
40119	386	15	a	a	DT
40119	386	16	useful	useful	JJ
40119	386	17	working	working	NN
40119	386	18	hypothesis	hypothesis	NN
40119	386	19	.	.	.
40119	387	1	Certain	certain	JJ
40119	387	2	curiosities	curiosity	NNS
40119	387	3	of	of	IN
40119	387	4	vision	vision	NN
40119	387	5	with	with	IN
40119	387	6	which	which	WDT
40119	387	7	I	-PRON-	PRP
40119	387	8	propose	propose	VBP
40119	387	9	to	to	TO
40119	387	10	deal	deal	VB
40119	387	11	in	in	IN
40119	387	12	a	a	DT
40119	387	13	future	future	JJ
40119	387	14	chapter	chapter	NN
40119	387	15	depend	depend	VB
40119	387	16	upon	upon	IN
40119	387	17	the	the	DT
40119	387	18	properties	property	NNS
40119	387	19	of	of	IN
40119	387	20	what	what	WP
40119	387	21	are	be	VBP
40119	387	22	known	know	VBN
40119	387	23	as	as	IN
40119	387	24	complementary	complementary	JJ
40119	387	25	colours	colour	NNS
40119	387	26	.	.	.
40119	388	1	Two	two	CD
40119	388	2	colours	colour	NNS
40119	388	3	are	be	VBP
40119	388	4	said	say	VBN
40119	388	5	to	to	TO
40119	388	6	be	be	VB
40119	388	7	complementary	complementary	JJ
40119	388	8	to	to	IN
40119	388	9	each	each	DT
40119	388	10	other	other	JJ
40119	388	11	when	when	WRB
40119	388	12	their	-PRON-	PRP$
40119	388	13	combination	combination	NN
40119	388	14	in	in	IN
40119	388	15	proper	proper	JJ
40119	388	16	proportions	proportion	NNS
40119	388	17	results	result	NNS
40119	388	18	in	in	IN
40119	388	19	the	the	DT
40119	388	20	formation	formation	NN
40119	388	21	of	of	IN
40119	388	22	white	white	NN
40119	388	23	.	.	.
40119	389	1	[	[	-LRB-
40119	389	2	Illustration	illustration	NN
40119	389	3	:	:	:
40119	389	4	_	_	NNP
40119	389	5	Fig	Fig	NNP
40119	389	6	.	.	.
40119	390	1	8.--Stencil	8.--stencil	CD
40119	390	2	Card	card	NN
40119	390	3	for	for	IN
40119	390	4	Complementary	Complementary	NNP
40119	390	5	Colours	Colours	NNP
40119	390	6	.	.	.
40119	390	7	_	_	NNP
40119	390	8	]	]	-RRB-
40119	390	9	If	if	IN
40119	390	10	we	-PRON-	PRP
40119	390	11	produce	produce	VBP
40119	390	12	a	a	DT
40119	390	13	compound	compound	NN
40119	390	14	hue	hue	NN
40119	390	15	by	by	IN
40119	390	16	mixing	mix	VBG
40119	390	17	together	together	RB
40119	390	18	the	the	DT
40119	390	19	colours	colour	NNS
40119	390	20	of	of	IN
40119	390	21	any	any	DT
40119	390	22	portion	portion	NN
40119	390	23	of	of	IN
40119	390	24	the	the	DT
40119	390	25	spectrum	spectrum	NN
40119	390	26	,	,	,
40119	390	27	and	and	CC
40119	390	28	a	a	DT
40119	390	29	second	second	JJ
40119	390	30	compound	compound	NN
40119	390	31	hue	hue	NN
40119	390	32	by	by	IN
40119	390	33	mixing	mix	VBG
40119	390	34	the	the	DT
40119	390	35	remainder	remainder	NN
40119	390	36	of	of	IN
40119	390	37	the	the	DT
40119	390	38	spectrum	spectrum	NN
40119	390	39	,	,	,
40119	390	40	it	-PRON-	PRP
40119	390	41	must	must	MD
40119	390	42	be	be	VB
40119	390	43	evident	evident	JJ
40119	390	44	that	that	IN
40119	390	45	these	these	DT
40119	390	46	two	two	CD
40119	390	47	hues	hue	NNS
40119	390	48	are	be	VBP
40119	390	49	necessarily	necessarily	RB
40119	390	50	complementary	complementary	JJ
40119	390	51	,	,	,
40119	390	52	for	for	IN
40119	390	53	when	when	WRB
40119	390	54	they	-PRON-	PRP
40119	390	55	are	be	VBP
40119	390	56	united	united	JJ
40119	390	57	they	-PRON-	PRP
40119	390	58	contain	contain	VBP
40119	390	59	together	together	RB
40119	390	60	all	all	PDT
40119	390	61	the	the	DT
40119	390	62	elements	element	NNS
40119	390	63	of	of	IN
40119	390	64	the	the	DT
40119	390	65	entire	entire	JJ
40119	390	66	spectrum	spectrum	NN
40119	390	67	,	,	,
40119	390	68	and	and	CC
40119	390	69	therefore	therefore	RB
40119	390	70	appear	appear	VBP
40119	390	71	as	as	IN
40119	390	72	white	white	JJ
40119	390	73	.	.	.
40119	391	1	This	this	DT
40119	391	2	may	may	MD
40119	391	3	be	be	VB
40119	391	4	illustrated	illustrate	VBN
40119	391	5	with	with	IN
40119	391	6	the	the	DT
40119	391	7	aid	aid	NN
40119	391	8	of	of	IN
40119	391	9	the	the	DT
40119	391	10	colour	colour	NN
40119	391	11	-	-	HYPH
40119	391	12	patch	patch	NN
40119	391	13	apparatus	apparatus	NN
40119	391	14	.	.	.
40119	392	1	Place	place	NN
40119	392	2	at	at	IN
40119	392	3	H	h	NN
40119	392	4	(	(	-LRB-
40119	392	5	Fig	fig	NN
40119	392	6	.	.	.
40119	393	1	3	3	LS
40119	393	2	)	)	-RRB-
40119	393	3	a	a	DT
40119	393	4	cardboard	cardboard	NN
40119	393	5	stencil	stencil	NN
40119	393	6	of	of	IN
40119	393	7	the	the	DT
40119	393	8	form	form	NN
40119	393	9	shown	show	VBN
40119	393	10	in	in	IN
40119	393	11	Fig	Fig	NNP
40119	393	12	.	.	.
40119	394	1	8	8	CD
40119	394	2	,	,	,
40119	394	3	and	and	CC
40119	394	4	focus	focus	VB
40119	394	5	upon	upon	IN
40119	394	6	it	-PRON-	PRP
40119	394	7	a	a	DT
40119	394	8	little	little	JJ
40119	394	9	spectrum	spectrum	NN
40119	394	10	,	,	,
40119	394	11	the	the	DT
40119	394	12	principal	principal	JJ
40119	394	13	hues	hue	NNS
40119	394	14	of	of	IN
40119	394	15	which	which	WDT
40119	394	16	are	be	VBP
40119	394	17	indicated	indicate	VBN
40119	394	18	by	by	IN
40119	394	19	the	the	DT
40119	394	20	letters	letter	NNS
40119	394	21	R	r	NN
40119	394	22	O	o	NN
40119	394	23	Y	y	NN
40119	394	24	G	g	NN
40119	394	25	B	b	NN
40119	394	26	V	v	NN
40119	394	27	(	(	-LRB-
40119	394	28	red	red	JJ
40119	394	29	,	,	,
40119	394	30	orange	orange	JJ
40119	394	31	,	,	,
40119	394	32	yellow	yellow	JJ
40119	394	33	,	,	,
40119	394	34	green	green	JJ
40119	394	35	,	,	,
40119	394	36	blue	blue	JJ
40119	394	37	,	,	,
40119	394	38	violet	violet	NN
40119	394	39	)	)	-RRB-
40119	394	40	.	.	.
40119	395	1	The	the	DT
40119	395	2	two	two	CD
40119	395	3	oblong	oblong	JJ
40119	395	4	apertures	aperture	NNS
40119	395	5	in	in	IN
40119	395	6	the	the	DT
40119	395	7	card	card	NN
40119	395	8	should	should	MD
40119	395	9	be	be	VB
40119	395	10	of	of	IN
40119	395	11	exactly	exactly	RB
40119	395	12	the	the	DT
40119	395	13	same	same	JJ
40119	395	14	height	height	NN
40119	395	15	,	,	,
40119	395	16	and	and	CC
40119	395	17	the	the	DT
40119	395	18	card	card	NN
40119	395	19	so	so	RB
40119	395	20	placed	place	VBD
40119	395	21	that	that	IN
40119	395	22	one	one	CD
40119	395	23	aperture	aperture	NN
40119	395	24	may	may	MD
40119	395	25	admit	admit	VB
40119	395	26	rays	ray	NNS
40119	395	27	extending	extend	VBG
40119	395	28	from	from	IN
40119	395	29	the	the	DT
40119	395	30	red	red	JJ
40119	395	31	end	end	NN
40119	395	32	of	of	IN
40119	395	33	the	the	DT
40119	395	34	spectrum	spectrum	NN
40119	395	35	to	to	IN
40119	395	36	about	about	IN
40119	395	37	the	the	DT
40119	395	38	middle	middle	NN
40119	395	39	of	of	IN
40119	395	40	the	the	DT
40119	395	41	green	green	NN
40119	395	42	,	,	,
40119	395	43	while	while	IN
40119	395	44	the	the	DT
40119	395	45	other	other	JJ
40119	395	46	admits	admit	VBZ
40119	395	47	rays	ray	NNS
40119	395	48	from	from	IN
40119	395	49	the	the	DT
40119	395	50	remainder	remainder	NN
40119	395	51	of	of	IN
40119	395	52	the	the	DT
40119	395	53	spectrum	spectrum	NN
40119	395	54	.	.	.
40119	396	1	If	if	IN
40119	396	2	now	now	RB
40119	396	3	the	the	DT
40119	396	4	lower	low	JJR
40119	396	5	aperture	aperture	NN
40119	396	6	be	be	VB
40119	396	7	covered	cover	VBN
40119	396	8	,	,	,
40119	396	9	only	only	RB
40119	396	10	the	the	DT
40119	396	11	red	red	JJ
40119	396	12	,	,	,
40119	396	13	orange	orange	JJ
40119	396	14	,	,	,
40119	396	15	yellow	yellow	JJ
40119	396	16	,	,	,
40119	396	17	and	and	CC
40119	396	18	part	part	NN
40119	396	19	of	of	IN
40119	396	20	the	the	DT
40119	396	21	green	green	JJ
40119	396	22	rays	ray	NNS
40119	396	23	will	will	MD
40119	396	24	pass	pass	VB
40119	396	25	through	through	IN
40119	396	26	the	the	DT
40119	396	27	stencil	stencil	NN
40119	396	28	,	,	,
40119	396	29	and	and	CC
40119	396	30	these	these	DT
40119	396	31	being	be	VBG
40119	396	32	combined	combine	VBN
40119	396	33	by	by	IN
40119	396	34	the	the	DT
40119	396	35	lens	lens	NN
40119	396	36	K	K	NNP
40119	396	37	(	(	-LRB-
40119	396	38	Fig	fig	NN
40119	396	39	.	.	.
40119	397	1	3	3	LS
40119	397	2	)	)	-RRB-
40119	397	3	will	will	MD
40119	397	4	form	form	VB
40119	397	5	upon	upon	IN
40119	397	6	the	the	DT
40119	397	7	screen	screen	NN
40119	397	8	a	a	DT
40119	397	9	bright	bright	JJ
40119	397	10	patch	patch	NN
40119	397	11	,	,	,
40119	397	12	the	the	DT
40119	397	13	colour	colour	NN
40119	397	14	of	of	IN
40119	397	15	which	which	WDT
40119	397	16	will	will	MD
40119	397	17	be	be	VB
40119	397	18	yellow	yellow	JJ
40119	397	19	.	.	.
40119	398	1	If	if	IN
40119	398	2	the	the	DT
40119	398	3	upper	upper	JJ
40119	398	4	aperture	aperture	NN
40119	398	5	be	be	VB
40119	398	6	covered	cover	VBN
40119	398	7	,	,	,
40119	398	8	and	and	CC
40119	398	9	the	the	DT
40119	398	10	rest	rest	NN
40119	398	11	of	of	IN
40119	398	12	the	the	DT
40119	398	13	green	green	NN
40119	398	14	,	,	,
40119	398	15	together	together	RB
40119	398	16	with	with	IN
40119	398	17	the	the	DT
40119	398	18	blue	blue	JJ
40119	398	19	and	and	CC
40119	398	20	violet	violet	NN
40119	398	21	rays	ray	NNS
40119	398	22	,	,	,
40119	398	23	allowed	allow	VBN
40119	398	24	to	to	TO
40119	398	25	pass	pass	VB
40119	398	26	through	through	RP
40119	398	27	the	the	DT
40119	398	28	other	other	JJ
40119	398	29	,	,	,
40119	398	30	the	the	DT
40119	398	31	colour	colour	NN
40119	398	32	of	of	IN
40119	398	33	the	the	DT
40119	398	34	patch	patch	NN
40119	398	35	will	will	MD
40119	398	36	become	become	VB
40119	398	37	blue	blue	JJ
40119	398	38	;	;	:
40119	398	39	and	and	CC
40119	398	40	if	if	IN
40119	398	41	both	both	DT
40119	398	42	apertures	aperture	NNS
40119	398	43	be	be	VB
40119	398	44	uncovered	uncover	VBN
40119	398	45	at	at	IN
40119	398	46	the	the	DT
40119	398	47	same	same	JJ
40119	398	48	time	time	NN
40119	398	49	,	,	,
40119	398	50	rays	ray	NNS
40119	398	51	from	from	IN
40119	398	52	the	the	DT
40119	398	53	whole	whole	JJ
40119	398	54	length	length	NN
40119	398	55	of	of	IN
40119	398	56	the	the	DT
40119	398	57	spectrum	spectrum	NN
40119	398	58	will	will	MD
40119	398	59	pass	pass	VB
40119	398	60	through	through	IN
40119	398	61	the	the	DT
40119	398	62	stencil	stencil	NN
40119	398	63	,	,	,
40119	398	64	and	and	CC
40119	398	65	the	the	DT
40119	398	66	patch	patch	NN
40119	398	67	will	will	MD
40119	398	68	,	,	,
40119	398	69	of	of	IN
40119	398	70	course	course	NN
40119	398	71	,	,	,
40119	398	72	turn	turn	VB
40119	398	73	white	white	JJ
40119	398	74	.	.	.
40119	399	1	The	the	DT
40119	399	2	yellow	yellow	NN
40119	399	3	and	and	CC
40119	399	4	the	the	DT
40119	399	5	blue	blue	JJ
40119	399	6	which	which	WDT
40119	399	7	were	be	VBD
40119	399	8	compounded	compound	VBN
40119	399	9	from	from	IN
40119	399	10	the	the	DT
40119	399	11	two	two	CD
40119	399	12	portions	portion	NNS
40119	399	13	of	of	IN
40119	399	14	the	the	DT
40119	399	15	spectrum	spectrum	NN
40119	399	16	are	be	VBP
40119	399	17	,	,	,
40119	399	18	therefore	therefore	RB
40119	399	19	,	,	,
40119	399	20	in	in	IN
40119	399	21	accordance	accordance	NN
40119	399	22	with	with	IN
40119	399	23	the	the	DT
40119	399	24	definition	definition	NN
40119	399	25	,	,	,
40119	399	26	complementary	complementary	JJ
40119	399	27	colours	colour	NNS
40119	399	28	.	.	.
40119	400	1	In	in	IN
40119	400	2	a	a	DT
40119	400	3	similar	similar	JJ
40119	400	4	manner	manner	NN
40119	400	5	by	by	IN
40119	400	6	dividing	divide	VBG
40119	400	7	the	the	DT
40119	400	8	spectrum	spectrum	NN
40119	400	9	into	into	IN
40119	400	10	any	any	DT
40119	400	11	two	two	CD
40119	400	12	portions	portion	NNS
40119	400	13	whatever	whatever	WDT
40119	400	14	--	--	:
40119	400	15	as	as	IN
40119	400	16	,	,	,
40119	400	17	for	for	IN
40119	400	18	example	example	NN
40119	400	19	,	,	,
40119	400	20	by	by	IN
40119	400	21	the	the	DT
40119	400	22	complicated	complicated	JJ
40119	400	23	stencil	stencil	NN
40119	400	24	shown	show	VBN
40119	400	25	in	in	IN
40119	400	26	Fig	Fig	NNP
40119	400	27	.	.	.
40119	401	1	9	9	CD
40119	401	2	-	-	HYPH
40119	401	3	-we	-we	:
40119	401	4	can	can	MD
40119	401	5	obtain	obtain	VB
40119	401	6	an	an	DT
40119	401	7	indefinite	indefinite	JJ
40119	401	8	number	number	NN
40119	401	9	of	of	IN
40119	401	10	pairs	pair	NNS
40119	401	11	of	of	IN
40119	401	12	complementary	complementary	JJ
40119	401	13	colours	colour	NNS
40119	401	14	.	.	.
40119	402	1	[	[	-LRB-
40119	402	2	Illustration	illustration	NN
40119	402	3	:	:	:
40119	402	4	_	_	NNP
40119	402	5	Fig	Fig	NNP
40119	402	6	.	.	.
40119	403	1	9.--Stencil	9.--stencil	CD
40119	403	2	Card	Card	NNP
40119	403	3	for	for	IN
40119	403	4	Complementary	Complementary	NNP
40119	403	5	Colours	Colours	NNP
40119	403	6	.	.	.
40119	403	7	_	_	NNP
40119	403	8	]	]	-RRB-
40119	403	9	But	but	CC
40119	403	10	it	-PRON-	PRP
40119	403	11	is	be	VBZ
40119	403	12	by	by	IN
40119	403	13	no	no	DT
40119	403	14	means	means	NN
40119	403	15	indispensable	indispensable	JJ
40119	403	16	that	that	IN
40119	403	17	both	both	DT
40119	403	18	or	or	CC
40119	403	19	either	either	DT
40119	403	20	of	of	IN
40119	403	21	a	a	DT
40119	403	22	pair	pair	NN
40119	403	23	of	of	IN
40119	403	24	complementary	complementary	JJ
40119	403	25	colours	colour	NNS
40119	403	26	should	should	MD
40119	403	27	be	be	VB
40119	403	28	compound	compound	VBN
40119	403	29	.	.	.
40119	404	1	To	to	TO
40119	404	2	prove	prove	VB
40119	404	3	this	this	DT
40119	404	4	,	,	,
40119	404	5	two	two	CD
40119	404	6	strips	strip	NNS
40119	404	7	of	of	IN
40119	404	8	card	card	NN
40119	404	9	with	with	IN
40119	404	10	narrow	narrow	JJ
40119	404	11	vertical	vertical	JJ
40119	404	12	openings	opening	NNS
40119	404	13	A	a	NN
40119	404	14	and	and	CC
40119	404	15	B	b	NN
40119	404	16	are	be	VBP
40119	404	17	prepared	prepare	VBN
40119	404	18	as	as	IN
40119	404	19	shown	show	VBN
40119	404	20	in	in	IN
40119	404	21	Fig	Fig	NNP
40119	404	22	.	.	.
40119	405	1	10	10	CD
40119	405	2	.	.	.
40119	406	1	The	the	DT
40119	406	2	cards	card	NNS
40119	406	3	are	be	VBP
40119	406	4	placed	place	VBN
40119	406	5	one	one	CD
40119	406	6	above	above	IN
40119	406	7	the	the	DT
40119	406	8	other	other	JJ
40119	406	9	and	and	CC
40119	406	10	can	can	MD
40119	406	11	be	be	VB
40119	406	12	slipped	slip	VBN
40119	406	13	in	in	IN
40119	406	14	a	a	DT
40119	406	15	horizontal	horizontal	JJ
40119	406	16	direction	direction	NN
40119	406	17	,	,	,
40119	406	18	so	so	IN
40119	406	19	that	that	IN
40119	406	20	the	the	DT
40119	406	21	narrow	narrow	JJ
40119	406	22	openings	opening	NNS
40119	406	23	can	can	MD
40119	406	24	be	be	VB
40119	406	25	brought	bring	VBN
40119	406	26	into	into	IN
40119	406	27	any	any	DT
40119	406	28	desired	desire	VBN
40119	406	29	part	part	NN
40119	406	30	of	of	IN
40119	406	31	the	the	DT
40119	406	32	spectrum	spectrum	NN
40119	406	33	which	which	WDT
40119	406	34	is	be	VBZ
40119	406	35	indicated	indicate	VBN
40119	406	36	in	in	IN
40119	406	37	outline	outline	NN
40119	406	38	by	by	IN
40119	406	39	the	the	DT
40119	406	40	dotted	dot	VBN
40119	406	41	oblong	oblong	NN
40119	406	42	.	.	.
40119	407	1	[	[	-LRB-
40119	407	2	Illustration	illustration	NN
40119	407	3	:	:	:
40119	407	4	_	_	NNP
40119	407	5	Fig	Fig	NNP
40119	407	6	.	.	.
40119	408	1	10.--Slide	10.--slide	CD
40119	408	2	for	for	IN
40119	408	3	mixing	mix	VBG
40119	408	4	any	any	DT
40119	408	5	two	two	CD
40119	408	6	Spectral	Spectral	NNP
40119	408	7	Colours	Colours	NNPS
40119	408	8	.	.	.
40119	408	9	_	_	NNP
40119	408	10	]	]	-RRB-
40119	408	11	Bring	bring	VB
40119	408	12	the	the	DT
40119	408	13	opening	opening	NN
40119	408	14	A	a	NN
40119	408	15	of	of	IN
40119	408	16	the	the	DT
40119	408	17	upper	upper	JJ
40119	408	18	card	card	NN
40119	408	19	into	into	IN
40119	408	20	the	the	DT
40119	408	21	yellow	yellow	NN
40119	408	22	of	of	IN
40119	408	23	the	the	DT
40119	408	24	spectrum	spectrum	NN
40119	408	25	and	and	CC
40119	408	26	the	the	DT
40119	408	27	opening	opening	NN
40119	408	28	B	b	NN
40119	408	29	of	of	IN
40119	408	30	the	the	DT
40119	408	31	lower	low	JJR
40119	408	32	card	card	NN
40119	408	33	into	into	IN
40119	408	34	the	the	DT
40119	408	35	blue	blue	NN
40119	408	36	.	.	.
40119	409	1	The	the	DT
40119	409	2	bright	bright	JJ
40119	409	3	patch	patch	NN
40119	409	4	formed	form	VBN
40119	409	5	upon	upon	IN
40119	409	6	the	the	DT
40119	409	7	screen	screen	NN
40119	409	8	will	will	MD
40119	409	9	then	then	RB
40119	409	10	be	be	VB
40119	409	11	illuminated	illuminate	VBN
40119	409	12	by	by	IN
40119	409	13	simple	simple	JJ
40119	409	14	blue	blue	JJ
40119	409	15	and	and	CC
40119	409	16	yellow	yellow	JJ
40119	409	17	rays	ray	NNS
40119	409	18	;	;	:
40119	409	19	yet	yet	CC
40119	409	20	it	-PRON-	PRP
40119	409	21	will	will	MD
40119	409	22	be	be	VB
40119	409	23	white	white	JJ
40119	409	24	--	--	:
40119	409	25	not	not	RB
40119	409	26	green	green	JJ
40119	409	27	,	,	,
40119	409	28	as	as	IN
40119	409	29	it	-PRON-	PRP
40119	409	30	would	would	MD
40119	409	31	be	be	VB
40119	409	32	if	if	IN
40119	409	33	Brewster	Brewster	NNP
40119	409	34	's	's	POS
40119	409	35	theory	theory	NN
40119	409	36	were	be	VBD
40119	409	37	correct	correct	JJ
40119	409	38	.	.	.
40119	410	1	If	if	IN
40119	410	2	upon	upon	IN
40119	410	3	the	the	DT
40119	410	4	first	first	JJ
40119	410	5	trial	trial	NN
40119	410	6	the	the	DT
40119	410	7	white	white	NNP
40119	410	8	should	should	MD
40119	410	9	not	not	RB
40119	410	10	be	be	VB
40119	410	11	absolutely	absolutely	RB
40119	410	12	pure	pure	JJ
40119	410	13	,	,	,
40119	410	14	it	-PRON-	PRP
40119	410	15	can	can	MD
40119	410	16	easily	easily	RB
40119	410	17	be	be	VB
40119	410	18	made	make	VBN
40119	410	19	so	so	RB
40119	410	20	by	by	IN
40119	410	21	partially	partially	RB
40119	410	22	covering	cover	VBG
40119	410	23	either	either	CC
40119	410	24	A	a	NN
40119	410	25	or	or	CC
40119	410	26	B	b	NN
40119	410	27	--	--	:
40119	410	28	the	the	DT
40119	410	29	first	first	JJ
40119	410	30	if	if	IN
40119	410	31	the	the	DT
40119	410	32	white	white	NNP
40119	410	33	is	be	VBZ
40119	410	34	yellowish	yellowish	JJ
40119	410	35	,	,	,
40119	410	36	the	the	DT
40119	410	37	second	second	JJ
40119	410	38	if	if	IN
40119	410	39	it	-PRON-	PRP
40119	410	40	is	be	VBZ
40119	410	41	bluish	bluish	JJ
40119	410	42	.	.	.
40119	411	1	Simple	simple	JJ
40119	411	2	spectral	spectral	JJ
40119	411	3	blue	blue	JJ
40119	411	4	and	and	CC
40119	411	5	yellow	yellow	NN
40119	411	6	are	be	VBP
40119	411	7	therefore	therefore	RB
40119	411	8	no	no	RB
40119	411	9	less	less	RBR
40119	411	10	truly	truly	RB
40119	411	11	complementary	complementary	JJ
40119	411	12	colours	colour	NNS
40119	411	13	than	than	IN
40119	411	14	are	be	VBP
40119	411	15	the	the	DT
40119	411	16	compound	compound	NN
40119	411	17	hues	hue	NNS
40119	411	18	formed	form	VBN
40119	411	19	when	when	WRB
40119	411	20	the	the	DT
40119	411	21	spectrum	spectrum	NN
40119	411	22	is	be	VBZ
40119	411	23	divided	divide	VBN
40119	411	24	into	into	IN
40119	411	25	two	two	CD
40119	411	26	parts	part	NNS
40119	411	27	.	.	.
40119	412	1	It	-PRON-	PRP
40119	412	2	is	be	VBZ
40119	412	3	noticeable	noticeable	JJ
40119	412	4	,	,	,
40119	412	5	however	however	RB
40119	412	6	,	,	,
40119	412	7	that	that	IN
40119	412	8	the	the	DT
40119	412	9	white	white	JJ
40119	412	10	light	light	NN
40119	412	11	resulting	result	VBG
40119	412	12	from	from	IN
40119	412	13	the	the	DT
40119	412	14	combination	combination	NN
40119	412	15	of	of	IN
40119	412	16	blue	blue	JJ
40119	412	17	and	and	CC
40119	412	18	yellow	yellow	JJ
40119	412	19	,	,	,
40119	412	20	though	though	IN
40119	412	21	it	-PRON-	PRP
40119	412	22	can	can	MD
40119	412	23	not	not	RB
40119	412	24	be	be	VB
40119	412	25	distinguished	distinguish	VBN
40119	412	26	by	by	IN
40119	412	27	the	the	DT
40119	412	28	eye	eye	NN
40119	412	29	from	from	IN
40119	412	30	ordinary	ordinary	JJ
40119	412	31	white	white	JJ
40119	412	32	light	light	NN
40119	412	33	,	,	,
40119	412	34	is	be	VBZ
40119	412	35	yet	yet	RB
40119	412	36	possessed	possess	VBN
40119	412	37	of	of	IN
40119	412	38	very	very	RB
40119	412	39	different	different	JJ
40119	412	40	properties	property	NNS
40119	412	41	.	.	.
40119	413	1	Most	Most	JJS
40119	413	2	coloured	colour	VBN
40119	413	3	objects	object	NNS
40119	413	4	when	when	WRB
40119	413	5	illuminated	illuminate	VBN
40119	413	6	by	by	IN
40119	413	7	it	-PRON-	PRP
40119	413	8	have	have	VBP
40119	413	9	their	-PRON-	PRP$
40119	413	10	hues	hue	NNS
40119	413	11	greatly	greatly	RB
40119	413	12	altered	alter	VBN
40119	413	13	;	;	:
40119	413	14	a	a	DT
40119	413	15	piece	piece	NN
40119	413	16	of	of	IN
40119	413	17	ribbon	ribbon	NN
40119	413	18	,	,	,
40119	413	19	for	for	IN
40119	413	20	example	example	NN
40119	413	21	,	,	,
40119	413	22	which	which	WDT
40119	413	23	in	in	IN
40119	413	24	common	common	JJ
40119	413	25	light	light	NN
40119	413	26	is	be	VBZ
40119	413	27	bright	bright	JJ
40119	413	28	red	red	JJ
40119	413	29	,	,	,
40119	413	30	will	will	MD
40119	413	31	appear	appear	VB
40119	413	32	when	when	WRB
40119	413	33	held	hold	VBN
40119	413	34	in	in	IN
40119	413	35	the	the	DT
40119	413	36	blue	blue	JJ
40119	413	37	-	-	HYPH
40119	413	38	yellow	yellow	JJ
40119	413	39	light	light	NN
40119	413	40	to	to	TO
40119	413	41	be	be	VB
40119	413	42	of	of	IN
40119	413	43	a	a	DT
40119	413	44	dark	dark	JJ
40119	413	45	slate	slate	NN
40119	413	46	colour	colour	NN
40119	413	47	,	,	,
40119	413	48	almost	almost	RB
40119	413	49	black	black	JJ
40119	413	50	.	.	.
40119	414	1	If	if	IN
40119	414	2	the	the	DT
40119	414	3	opening	opening	NN
40119	414	4	A	A	NNP
40119	414	5	is	be	VBZ
40119	414	6	placed	place	VBN
40119	414	7	in	in	IN
40119	414	8	any	any	DT
40119	414	9	part	part	NN
40119	414	10	whatever	whatever	WDT
40119	414	11	of	of	IN
40119	414	12	the	the	DT
40119	414	13	spectrum	spectrum	NN
40119	414	14	except	except	IN
40119	414	15	the	the	DT
40119	414	16	green	green	NN
40119	414	17	,	,	,
40119	414	18	it	-PRON-	PRP
40119	414	19	will	will	MD
40119	414	20	always	always	RB
40119	414	21	be	be	VB
40119	414	22	possible	possible	JJ
40119	414	23	,	,	,
40119	414	24	by	by	IN
40119	414	25	moving	move	VBG
40119	414	26	B	b	NN
40119	414	27	backwards	backwards	RB
40119	414	28	or	or	CC
40119	414	29	forwards	forwards	RB
40119	414	30	,	,	,
40119	414	31	to	to	TO
40119	414	32	find	find	VB
40119	414	33	some	some	DT
40119	414	34	other	other	JJ
40119	414	35	part	part	NN
40119	414	36	where	where	WRB
40119	414	37	the	the	DT
40119	414	38	colour	colour	NN
40119	414	39	is	be	VBZ
40119	414	40	complementary	complementary	JJ
40119	414	41	to	to	IN
40119	414	42	that	that	DT
40119	414	43	at	at	IN
40119	414	44	A.	a.	NN
40119	415	1	To	to	TO
40119	415	2	green	green	JJ
40119	415	3	there	there	EX
40119	415	4	is	be	VBZ
40119	415	5	no	no	DT
40119	415	6	simple	simple	JJ
40119	415	7	complementary	complementary	NN
40119	415	8	;	;	:
40119	415	9	a	a	DT
40119	415	10	purple	purple	NN
40119	415	11	is	be	VBZ
40119	415	12	required	require	VBN
40119	415	13	,	,	,
40119	415	14	which	which	WDT
40119	415	15	is	be	VBZ
40119	415	16	not	not	RB
40119	415	17	found	find	VBN
40119	415	18	in	in	IN
40119	415	19	the	the	DT
40119	415	20	spectrum	spectrum	NN
40119	415	21	,	,	,
40119	415	22	but	but	CC
40119	415	23	may	may	MD
40119	415	24	be	be	VB
40119	415	25	formed	form	VBN
40119	415	26	by	by	IN
40119	415	27	combining	combine	VBG
40119	415	28	small	small	JJ
40119	415	29	portions	portion	NNS
40119	415	30	of	of	IN
40119	415	31	spectral	spectral	JJ
40119	415	32	blue	blue	JJ
40119	415	33	and	and	CC
40119	415	34	red	red	JJ
40119	415	35	.	.	.
40119	416	1	For	for	IN
40119	416	2	studying	study	VBG
40119	416	3	mixtures	mixture	NNS
40119	416	4	of	of	IN
40119	416	5	three	three	CD
40119	416	6	simple	simple	JJ
40119	416	7	colours	colour	NNS
40119	416	8	,	,	,
40119	416	9	a	a	DT
40119	416	10	third	third	JJ
40119	416	11	slide	slide	NN
40119	416	12	may	may	MD
40119	416	13	be	be	VB
40119	416	14	added	add	VBN
40119	416	15	to	to	IN
40119	416	16	the	the	DT
40119	416	17	two	two	CD
40119	416	18	shown	show	VBN
40119	416	19	in	in	IN
40119	416	20	Fig	Fig	NNP
40119	416	21	.	.	.
40119	417	1	10	10	CD
40119	417	2	.	.	.
40119	418	1	The	the	DT
40119	418	2	following	follow	VBG
40119	418	3	little	little	JJ
40119	418	4	table	table	NN
40119	418	5	gives	give	VBZ
40119	418	6	the	the	DT
40119	418	7	principal	principal	JJ
40119	418	8	pairs	pair	NNS
40119	418	9	of	of	IN
40119	418	10	complementary	complementary	JJ
40119	418	11	colours	colour	NNS
40119	418	12	.	.	.
40119	419	1	TABLE	TABLE	NNS
40119	419	2	OF	of	IN
40119	419	3	COMPLEMENTARY	COMPLEMENTARY	NNP
40119	419	4	COLOURS	colour	NNS
40119	419	5	.	.	.
40119	420	1	Red	Red	NNP
40119	420	2	Greenish	Greenish	NNP
40119	420	3	-	-	HYPH
40119	420	4	blue	blue	JJ
40119	420	5	Orange	Orange	NNP
40119	420	6	Sky	Sky	NNP
40119	420	7	-	-	HYPH
40119	420	8	blue	blue	JJ
40119	420	9	Yellow	Yellow	NNP
40119	420	10	Blue	Blue	NNP
40119	420	11	Greenish	greenish	JJ
40119	420	12	-	-	HYPH
40119	420	13	yellow	yellow	JJ
40119	420	14	Violet	Violet	NNP
40119	420	15	Green	Green	NNP
40119	420	16	Purple	Purple	NNP
40119	420	17	CHAPTER	CHAPTER	NNP
40119	420	18	III	III	NNP
40119	420	19	.	.	.
40119	421	1	SOME	some	DT
40119	421	2	OPTICAL	optical	NN
40119	421	3	DEFECTS	DEFECTS	NNP
40119	421	4	OF	of	IN
40119	421	5	THE	the	DT
40119	421	6	EYE	EYE	NNP
40119	421	7	.	.	.
40119	422	1	More	More	JJR
40119	422	2	than	than	IN
40119	422	3	one	one	CD
40119	422	4	reference	reference	NN
40119	422	5	has	have	VBZ
40119	422	6	been	be	VBN
40119	422	7	made	make	VBN
40119	422	8	to	to	IN
40119	422	9	the	the	DT
40119	422	10	fact	fact	NN
40119	422	11	that	that	IN
40119	422	12	the	the	DT
40119	422	13	sense	sense	NN
40119	422	14	of	of	IN
40119	422	15	sight	sight	NN
40119	422	16	,	,	,
40119	422	17	even	even	RB
40119	422	18	in	in	IN
40119	422	19	its	-PRON-	PRP$
40119	422	20	best	good	JJS
40119	422	21	normal	normal	JJ
40119	422	22	condition	condition	NN
40119	422	23	,	,	,
40119	422	24	is	be	VBZ
40119	422	25	characterised	characterise	VBN
40119	422	26	by	by	IN
40119	422	27	certain	certain	JJ
40119	422	28	defects	defect	NNS
40119	422	29	and	and	CC
40119	422	30	anomalies	anomaly	NNS
40119	422	31	.	.	.
40119	423	1	Some	some	DT
40119	423	2	of	of	IN
40119	423	3	these	these	DT
40119	423	4	arise	arise	VBP
40119	423	5	directly	directly	RB
40119	423	6	from	from	IN
40119	423	7	causes	cause	NNS
40119	423	8	inherent	inherent	JJ
40119	423	9	in	in	IN
40119	423	10	the	the	DT
40119	423	11	design	design	NN
40119	423	12	or	or	CC
40119	423	13	structure	structure	NN
40119	423	14	of	of	IN
40119	423	15	the	the	DT
40119	423	16	eye	eye	NN
40119	423	17	itself	-PRON-	PRP
40119	423	18	,	,	,
40119	423	19	and	and	CC
40119	423	20	may	may	MD
40119	423	21	be	be	VB
40119	423	22	broadly	broadly	RB
40119	423	23	classified	classify	VBN
40119	423	24	as	as	IN
40119	423	25	physical	physical	JJ
40119	423	26	;	;	:
40119	423	27	others	other	NNS
40119	423	28	are	be	VBP
40119	423	29	of	of	IN
40119	423	30	psychological	psychological	JJ
40119	423	31	origin	origin	NN
40119	423	32	,	,	,
40119	423	33	and	and	CC
40119	423	34	result	result	VB
40119	423	35	from	from	IN
40119	423	36	the	the	DT
40119	423	37	erroneous	erroneous	JJ
40119	423	38	interpretations	interpretation	NNS
40119	423	39	placed	place	VBN
40119	423	40	by	by	IN
40119	423	41	the	the	DT
40119	423	42	mind	mind	NN
40119	423	43	upon	upon	IN
40119	423	44	the	the	DT
40119	423	45	phenomena	phenomenon	NNS
40119	423	46	presented	present	VBN
40119	423	47	to	to	IN
40119	423	48	it	-PRON-	PRP
40119	423	49	through	through	IN
40119	423	50	the	the	DT
40119	423	51	medium	medium	NN
40119	423	52	of	of	IN
40119	423	53	the	the	DT
40119	423	54	optic	optic	JJ
40119	423	55	nerve	nerve	NN
40119	423	56	and	and	CC
40119	423	57	the	the	DT
40119	423	58	brain	brain	NN
40119	423	59	.	.	.
40119	424	1	Among	among	IN
40119	424	2	the	the	DT
40119	424	3	numerous	numerous	JJ
40119	424	4	physical	physical	JJ
40119	424	5	defects	defect	NNS
40119	424	6	of	of	IN
40119	424	7	the	the	DT
40119	424	8	eye	eye	NN
40119	424	9	none	none	NN
40119	424	10	is	be	VBZ
40119	424	11	more	more	RBR
40119	424	12	remarkable	remarkable	JJ
40119	424	13	than	than	IN
40119	424	14	the	the	DT
40119	424	15	absence	absence	NN
40119	424	16	of	of	IN
40119	424	17	means	mean	NNS
40119	424	18	for	for	IN
40119	424	19	properly	properly	RB
40119	424	20	correcting	correct	VBG
40119	424	21	chromatic	chromatic	JJ
40119	424	22	aberration	aberration	NN
40119	424	23	.	.	.
40119	425	1	This	this	DT
40119	425	2	defect	defect	NN
40119	425	3	is	be	VBZ
40119	425	4	remarkable	remarkable	JJ
40119	425	5	because	because	IN
40119	425	6	it	-PRON-	PRP
40119	425	7	appears	appear	VBZ
40119	425	8	--	--	:
40119	425	9	at	at	IN
40119	425	10	least	least	JJS
40119	425	11	to	to	IN
40119	425	12	those	those	DT
40119	425	13	who	who	WP
40119	425	14	are	be	VBP
40119	425	15	without	without	IN
40119	425	16	actual	actual	JJ
40119	425	17	experience	experience	NN
40119	425	18	in	in	IN
40119	425	19	the	the	DT
40119	425	20	manufacture	manufacture	NN
40119	425	21	of	of	IN
40119	425	22	eyes	eye	NNS
40119	425	23	--	--	:
40119	425	24	to	to	TO
40119	425	25	be	be	VB
40119	425	26	one	one	CD
40119	425	27	which	which	WDT
40119	425	28	might	may	MD
40119	425	29	very	very	RB
40119	425	30	easily	easily	RB
40119	425	31	have	have	VB
40119	425	32	been	be	VBN
40119	425	33	avoided	avoid	VBN
40119	425	34	.	.	.
40119	426	1	So	so	RB
40119	426	2	far	far	RB
40119	426	3	as	as	IN
40119	426	4	a	a	DT
40119	426	5	mere	mere	JJ
40119	426	6	theorist	theorist	NN
40119	426	7	can	can	MD
40119	426	8	judge	judge	VB
40119	426	9	,	,	,
40119	426	10	an	an	DT
40119	426	11	achromatic	achromatic	JJ
40119	426	12	arrangement	arrangement	NN
40119	426	13	of	of	IN
40119	426	14	lenses	lense	NNS
40119	426	15	would	would	MD
40119	426	16	have	have	VB
40119	426	17	been	be	VBN
40119	426	18	just	just	RB
40119	426	19	as	as	RB
40119	426	20	simple	simple	JJ
40119	426	21	and	and	CC
40119	426	22	just	just	RB
40119	426	23	as	as	RB
40119	426	24	cheap	cheap	JJ
40119	426	25	(	(	-LRB-
40119	426	26	if	if	IN
40119	426	27	I	-PRON-	PRP
40119	426	28	may	may	MD
40119	426	29	use	use	VB
40119	426	30	the	the	DT
40119	426	31	term	term	NN
40119	426	32	)	)	-RRB-
40119	426	33	as	as	IN
40119	426	34	the	the	DT
40119	426	35	arrangement	arrangement	NN
40119	426	36	with	with	IN
40119	426	37	which	which	WDT
40119	426	38	we	-PRON-	PRP
40119	426	39	find	find	VBP
40119	426	40	ourselves	-PRON-	PRP
40119	426	41	provided	provide	VBN
40119	426	42	.	.	.
40119	427	1	It	-PRON-	PRP
40119	427	2	is	be	VBZ
40119	427	3	true	true	JJ
40119	427	4	that	that	IN
40119	427	5	we	-PRON-	PRP
40119	427	6	manage	manage	VBP
40119	427	7	to	to	TO
40119	427	8	go	go	VB
40119	427	9	through	through	IN
40119	427	10	life	life	NN
40119	427	11	very	very	RB
40119	427	12	well	well	RB
40119	427	13	with	with	IN
40119	427	14	our	-PRON-	PRP$
40119	427	15	uncorrected	uncorrected	JJ
40119	427	16	lenses	lense	NNS
40119	427	17	,	,	,
40119	427	18	and	and	CC
40119	427	19	indeed	indeed	RB
40119	427	20	it	-PRON-	PRP
40119	427	21	is	be	VBZ
40119	427	22	hardly	hardly	RB
40119	427	23	possible	possible	JJ
40119	427	24	by	by	IN
40119	427	25	ordinary	ordinary	JJ
40119	427	26	observation	observation	NN
40119	427	27	to	to	TO
40119	427	28	detect	detect	VB
40119	427	29	any	any	DT
40119	427	30	evidence	evidence	NN
40119	427	31	of	of	IN
40119	427	32	the	the	DT
40119	427	33	imperfection	imperfection	NN
40119	427	34	.	.	.
40119	428	1	Yet	yet	CC
40119	428	2	its	-PRON-	PRP$
40119	428	3	existence	existence	NN
40119	428	4	in	in	IN
40119	428	5	a	a	DT
40119	428	6	glaring	glaring	JJ
40119	428	7	degree	degree	NN
40119	428	8	is	be	VBZ
40119	428	9	undoubted	undoubted	JJ
40119	428	10	,	,	,
40119	428	11	and	and	CC
40119	428	12	can	can	MD
40119	428	13	be	be	VB
40119	428	14	readily	readily	RB
40119	428	15	demonstrated	demonstrate	VBN
40119	428	16	by	by	IN
40119	428	17	a	a	DT
40119	428	18	great	great	JJ
40119	428	19	variety	variety	NN
40119	428	20	of	of	IN
40119	428	21	methods	method	NNS
40119	428	22	.	.	.
40119	429	1	The	the	DT
40119	429	2	conclusion	conclusion	NN
40119	429	3	is	be	VBZ
40119	429	4	inevitable	inevitable	JJ
40119	429	5	that	that	IN
40119	429	6	with	with	IN
40119	429	7	achromatic	achromatic	JJ
40119	429	8	eyes	eye	NNS
40119	429	9	our	-PRON-	PRP$
40119	429	10	vision	vision	NN
40119	429	11	would	would	MD
40119	429	12	be	be	VB
40119	429	13	improved	improve	VBN
40119	429	14	,	,	,
40119	429	15	but	but	CC
40119	429	16	whether	whether	IN
40119	429	17	there	there	EX
40119	429	18	may	may	MD
40119	429	19	not	not	RB
40119	429	20	possibly	possibly	RB
40119	429	21	exist	exist	VB
40119	429	22	reasons	reason	NNS
40119	429	23	why	why	WRB
40119	429	24	such	such	PDT
40119	429	25	an	an	DT
40119	429	26	improvement	improvement	NN
40119	429	27	could	could	MD
40119	429	28	only	only	RB
40119	429	29	be	be	VB
40119	429	30	achieved	achieve	VBN
40119	429	31	at	at	IN
40119	429	32	a	a	DT
40119	429	33	disproportionately	disproportionately	RB
40119	429	34	high	high	JJ
40119	429	35	cost	cost	NN
40119	429	36	is	be	VBZ
40119	429	37	a	a	DT
40119	429	38	question	question	NN
40119	429	39	which	which	WDT
40119	429	40	can	can	MD
40119	429	41	not	not	RB
40119	429	42	at	at	IN
40119	429	43	present	present	JJ
40119	429	44	be	be	VB
40119	429	45	answered	answer	VBN
40119	429	46	.	.	.
40119	430	1	Without	without	IN
40119	430	2	going	go	VBG
40119	430	3	into	into	IN
40119	430	4	matters	matter	NNS
40119	430	5	which	which	WDT
40119	430	6	are	be	VBP
40119	430	7	dealt	deal	VBN
40119	430	8	with	with	IN
40119	430	9	in	in	IN
40119	430	10	every	every	DT
40119	430	11	elementary	elementary	JJ
40119	430	12	text	text	NN
40119	430	13	book	book	NN
40119	430	14	of	of	IN
40119	430	15	optics	optic	NNS
40119	430	16	or	or	CC
40119	430	17	general	general	JJ
40119	430	18	physics	physics	NN
40119	430	19	,	,	,
40119	430	20	it	-PRON-	PRP
40119	430	21	may	may	MD
40119	430	22	be	be	VB
40119	430	23	desirable	desirable	JJ
40119	430	24	to	to	TO
40119	430	25	explain	explain	VB
40119	430	26	shortly	shortly	RB
40119	430	27	what	what	WP
40119	430	28	is	be	VBZ
40119	430	29	meant	mean	VBN
40119	430	30	by	by	IN
40119	430	31	the	the	DT
40119	430	32	terms	term	NNS
40119	430	33	chromatic	chromatic	JJ
40119	430	34	aberration	aberration	NN
40119	430	35	,	,	,
40119	430	36	and	and	CC
40119	430	37	achromatism	achromatism	NN
40119	430	38	.	.	.
40119	431	1	[	[	-LRB-
40119	431	2	Illustration	illustration	NN
40119	431	3	:	:	:
40119	431	4	_	_	NNP
40119	431	5	Fig	Fig	NNP
40119	431	6	.	.	.
40119	432	1	11.--Refraction	11.--refraction	CD
40119	432	2	of	of	IN
40119	432	3	monochromatic	monochromatic	JJ
40119	432	4	Light	Light	NNP
40119	432	5	by	by	IN
40119	432	6	a	a	DT
40119	432	7	lens	lens	NN
40119	432	8	.	.	.
40119	432	9	_	_	NNP
40119	432	10	]	]	-RRB-
40119	432	11	Let	Let	NNP
40119	432	12	L	L	NNP
40119	432	13	L	l	NN
40119	432	14	,	,	,
40119	432	15	Fig	Fig	NNP
40119	432	16	.	.	.
40119	433	1	11	11	CD
40119	433	2	,	,	,
40119	433	3	represent	represent	VBP
40119	433	4	in	in	IN
40119	433	5	section	section	NN
40119	433	6	a	a	DT
40119	433	7	circular	circular	JJ
40119	433	8	convex	convex	NNS
40119	433	9	lens	lens	NN
40119	433	10	,	,	,
40119	433	11	and	and	CC
40119	433	12	P	p	NN
40119	433	13	a	a	DT
40119	433	14	luminous	luminous	JJ
40119	433	15	point	point	NN
40119	433	16	,	,	,
40119	433	17	which	which	WDT
40119	433	18	is	be	VBZ
40119	433	19	most	most	RBS
40119	433	20	conveniently	conveniently	RB
40119	433	21	supposed	suppose	VBN
40119	433	22	to	to	TO
40119	433	23	be	be	VB
40119	433	24	situated	situate	VBN
40119	433	25	on	on	IN
40119	433	26	the	the	DT
40119	433	27	axis	axis	NN
40119	433	28	of	of	IN
40119	433	29	the	the	DT
40119	433	30	lens	lens	NN
40119	433	31	.	.	.
40119	434	1	Imagine	imagine	VB
40119	434	2	P	p	NN
40119	434	3	to	to	TO
40119	434	4	be	be	VB
40119	434	5	surrounded	surround	VBN
40119	434	6	in	in	IN
40119	434	7	the	the	DT
40119	434	8	first	first	JJ
40119	434	9	instance	instance	NN
40119	434	10	by	by	IN
40119	434	11	a	a	DT
40119	434	12	glass	glass	NN
40119	434	13	shade	shade	NN
40119	434	14	which	which	WDT
40119	434	15	transmits	transmit	VBZ
40119	434	16	only	only	RB
40119	434	17	monochromatic	monochromatic	JJ
40119	434	18	red	red	JJ
40119	434	19	light	light	NN
40119	434	20	.	.	.
40119	435	1	So	so	RB
40119	435	2	much	much	JJ
40119	435	3	of	of	IN
40119	435	4	the	the	DT
40119	435	5	light	light	NN
40119	435	6	from	from	IN
40119	435	7	P	P	NNP
40119	435	8	as	as	IN
40119	435	9	falls	fall	VBZ
40119	435	10	upon	upon	IN
40119	435	11	the	the	DT
40119	435	12	lens	lens	NN
40119	435	13	will	will	MD
40119	435	14	be	be	VB
40119	435	15	refracted	refract	VBN
40119	435	16	to	to	IN
40119	435	17	a	a	DT
40119	435	18	point	point	NN
40119	435	19	at	at	IN
40119	435	20	the	the	DT
40119	435	21	conjugate	conjugate	NN
40119	435	22	focus	focus	NN
40119	435	23	F	F	NNP
40119	435	24	,	,	,
40119	435	25	and	and	CC
40119	435	26	after	after	IN
40119	435	27	passing	pass	VBG
40119	435	28	this	this	DT
40119	435	29	point	point	NN
40119	435	30	will	will	MD
40119	435	31	diverge	diverge	VB
40119	435	32	again	again	RB
40119	435	33	;	;	:
40119	435	34	the	the	DT
40119	435	35	refracted	refract	VBN
40119	435	36	light	light	JJ
40119	435	37	rays	ray	NNS
40119	435	38	will	will	MD
40119	435	39	,	,	,
40119	435	40	in	in	IN
40119	435	41	fact	fact	NN
40119	435	42	,	,	,
40119	435	43	form	form	VB
40119	435	44	a	a	DT
40119	435	45	double	double	JJ
40119	435	46	cone	cone	NN
40119	435	47	,	,	,
40119	435	48	of	of	IN
40119	435	49	which	which	WDT
40119	435	50	F	F	NNP
40119	435	51	is	be	VBZ
40119	435	52	the	the	DT
40119	435	53	apex	apex	NN
40119	435	54	.	.	.
40119	436	1	If	if	IN
40119	436	2	a	a	DT
40119	436	3	white	white	JJ
40119	436	4	screen	screen	NN
40119	436	5	be	be	VB
40119	436	6	held	hold	VBN
40119	436	7	at	at	IN
40119	436	8	F	F	NNP
40119	436	9	,	,	,
40119	436	10	there	there	EX
40119	436	11	will	will	MD
40119	436	12	be	be	VB
40119	436	13	focussed	focusse	VBN
40119	436	14	upon	upon	IN
40119	436	15	it	-PRON-	PRP
40119	436	16	a	a	DT
40119	436	17	small	small	JJ
40119	436	18	clearly	clearly	RB
40119	436	19	-	-	HYPH
40119	436	20	defined	define	VBN
40119	436	21	image	image	NN
40119	436	22	of	of	IN
40119	436	23	the	the	DT
40119	436	24	luminous	luminous	JJ
40119	436	25	point	point	NN
40119	436	26	.	.	.
40119	437	1	If	if	IN
40119	437	2	,	,	,
40119	437	3	however	however	RB
40119	437	4	,	,	,
40119	437	5	the	the	DT
40119	437	6	screen	screen	NN
40119	437	7	be	be	VB
40119	437	8	moved	move	VBN
40119	437	9	nearer	nearer	RB
40119	437	10	to	to	IN
40119	437	11	or	or	CC
40119	437	12	further	further	RB
40119	437	13	from	from	IN
40119	437	14	the	the	DT
40119	437	15	lens	lens	NN
40119	437	16	,	,	,
40119	437	17	it	-PRON-	PRP
40119	437	18	will	will	MD
40119	437	19	cut	cut	VB
40119	437	20	the	the	DT
40119	437	21	cone	cone	NN
40119	437	22	of	of	IN
40119	437	23	light	light	NN
40119	437	24	,	,	,
40119	437	25	and	and	CC
40119	437	26	the	the	DT
40119	437	27	image	image	NN
40119	437	28	will	will	MD
40119	437	29	then	then	RB
40119	437	30	no	no	RB
40119	437	31	longer	longer	RB
40119	437	32	appear	appear	VB
40119	437	33	as	as	IN
40119	437	34	a	a	DT
40119	437	35	point	point	NN
40119	437	36	,	,	,
40119	437	37	but	but	CC
40119	437	38	as	as	IN
40119	437	39	a	a	DT
40119	437	40	circular	circular	JJ
40119	437	41	red	red	JJ
40119	437	42	disk	disk	NN
40119	437	43	,	,	,
40119	437	44	which	which	WDT
40119	437	45	will	will	MD
40119	437	46	be	be	VB
40119	437	47	larger	large	JJR
40119	437	48	the	the	DT
40119	437	49	greater	great	JJR
40119	437	50	the	the	DT
40119	437	51	distance	distance	NN
40119	437	52	of	of	IN
40119	437	53	the	the	DT
40119	437	54	screen	screen	NN
40119	437	55	from	from	IN
40119	437	56	F.	F.	NNP
40119	437	57	Such	such	PDT
40119	437	58	a	a	DT
40119	437	59	disk	disk	NN
40119	437	60	is	be	VBZ
40119	437	61	known	know	VBN
40119	437	62	as	as	IN
40119	437	63	a	a	DT
40119	437	64	"	"	``
40119	437	65	diffusion	diffusion	NN
40119	437	66	circle	circle	NN
40119	437	67	.	.	.
40119	437	68	"	"	''
40119	438	1	Suppose	suppose	VB
40119	438	2	now	now	RB
40119	438	3	that	that	IN
40119	438	4	we	-PRON-	PRP
40119	438	5	substitute	substitute	VBP
40119	438	6	for	for	IN
40119	438	7	the	the	DT
40119	438	8	red	red	JJ
40119	438	9	glass	glass	NN
40119	438	10	,	,	,
40119	438	11	surrounding	surround	VBG
40119	438	12	the	the	DT
40119	438	13	source	source	NN
40119	438	14	of	of	IN
40119	438	15	light	light	NN
40119	438	16	,	,	,
40119	438	17	a	a	DT
40119	438	18	purple	purple	JJ
40119	438	19	one	one	CD
40119	438	20	capable	capable	JJ
40119	438	21	of	of	IN
40119	438	22	transmitting	transmit	VBG
40119	438	23	not	not	RB
40119	438	24	only	only	RB
40119	438	25	red	red	JJ
40119	438	26	rays	ray	NNS
40119	438	27	but	but	CC
40119	438	28	violet	violet	NN
40119	438	29	as	as	RB
40119	438	30	well	well	RB
40119	438	31	.	.	.
40119	439	1	The	the	DT
40119	439	2	lens	lens	NN
40119	439	3	will	will	MD
40119	439	4	cause	cause	VB
40119	439	5	both	both	CC
40119	439	6	the	the	DT
40119	439	7	red	red	NN
40119	439	8	and	and	CC
40119	439	9	the	the	DT
40119	439	10	violet	violet	NN
40119	439	11	rays	ray	NNS
40119	439	12	which	which	WDT
40119	439	13	pass	pass	VBP
40119	439	14	through	through	IN
40119	439	15	it	-PRON-	PRP
40119	439	16	to	to	TO
40119	439	17	converge	converge	VB
40119	439	18	;	;	:
40119	439	19	but	but	CC
40119	439	20	since	since	IN
40119	439	21	the	the	DT
40119	439	22	violet	violet	NN
40119	439	23	rays	ray	NNS
40119	439	24	are	be	VBP
40119	439	25	more	more	RBR
40119	439	26	refrangible	refrangible	JJ
40119	439	27	--	--	:
40119	439	28	more	more	RBR
40119	439	29	easily	easily	RB
40119	439	30	refracted	refract	VBN
40119	439	31	or	or	CC
40119	439	32	bent	bent	JJ
40119	439	33	aside	aside	RB
40119	439	34	out	out	IN
40119	439	35	of	of	IN
40119	439	36	their	-PRON-	PRP$
40119	439	37	straight	straight	JJ
40119	439	38	course	course	NN
40119	439	39	--	--	:
40119	439	40	than	than	IN
40119	439	41	the	the	DT
40119	439	42	red	red	NN
40119	439	43	,	,	,
40119	439	44	there	there	EX
40119	439	45	will	will	MD
40119	439	46	now	now	RB
40119	439	47	be	be	VB
40119	439	48	two	two	CD
40119	439	49	double	double	JJ
40119	439	50	cones	cone	NNS
40119	439	51	,	,	,
40119	439	52	as	as	IN
40119	439	53	shown	show	VBN
40119	439	54	in	in	IN
40119	439	55	Fig	Fig	NNP
40119	439	56	.	.	.
40119	440	1	12	12	CD
40119	440	2	,	,	,
40119	440	3	where	where	WRB
40119	440	4	the	the	DT
40119	440	5	contours	contour	NNS
40119	440	6	of	of	IN
40119	440	7	the	the	DT
40119	440	8	red	red	JJ
40119	440	9	cones	cone	NNS
40119	440	10	are	be	VBP
40119	440	11	represented	represent	VBN
40119	440	12	by	by	IN
40119	440	13	solid	solid	JJ
40119	440	14	lines	line	NNS
40119	440	15	and	and	CC
40119	440	16	those	those	DT
40119	440	17	of	of	IN
40119	440	18	the	the	DT
40119	440	19	violet	violet	NN
40119	440	20	by	by	IN
40119	440	21	dots	dot	NNS
40119	440	22	.	.	.
40119	441	1	[	[	-LRB-
40119	441	2	Illustration	illustration	NN
40119	441	3	:	:	:
40119	441	4	_	_	NNP
40119	441	5	Fig	Fig	NNP
40119	441	6	.	.	.
40119	442	1	12.--Refraction	12.--refraction	CD
40119	442	2	of	of	IN
40119	442	3	dichromatic	dichromatic	JJ
40119	442	4	Light	Light	NNP
40119	442	5	.	.	.
40119	442	6	_	_	NNP
40119	442	7	]	]	-RRB-
40119	442	8	The	the	DT
40119	442	9	focus	focus	NN
40119	442	10	of	of	IN
40119	442	11	the	the	DT
40119	442	12	red	red	JJ
40119	442	13	rays	ray	NNS
40119	442	14	will	will	MD
40119	442	15	as	as	IN
40119	442	16	before	before	RB
40119	442	17	be	be	VB
40119	442	18	at	at	IN
40119	442	19	F	F	NNP
40119	442	20	,	,	,
40119	442	21	but	but	CC
40119	442	22	that	that	DT
40119	442	23	of	of	IN
40119	442	24	the	the	DT
40119	442	25	violet	violet	NN
40119	442	26	will	will	MD
40119	442	27	be	be	VB
40119	442	28	nearer	nearer	IN
40119	442	29	to	to	IN
40119	442	30	the	the	DT
40119	442	31	lens	lens	NN
40119	442	32	,	,	,
40119	442	33	as	as	IN
40119	442	34	at	at	IN
40119	442	35	H	h	NN
40119	442	36	,	,	,
40119	442	37	and	and	CC
40119	442	38	this	this	DT
40119	442	39	being	be	VBG
40119	442	40	so	so	RB
40119	442	41	,	,	,
40119	442	42	it	-PRON-	PRP
40119	442	43	is	be	VBZ
40119	442	44	evident	evident	JJ
40119	442	45	that	that	IN
40119	442	46	a	a	DT
40119	442	47	well	well	RB
40119	442	48	defined	define	VBN
40119	442	49	image	image	NN
40119	442	50	of	of	IN
40119	442	51	the	the	DT
40119	442	52	purple	purple	JJ
40119	442	53	source	source	NN
40119	442	54	of	of	IN
40119	442	55	light	light	NN
40119	442	56	can	can	MD
40119	442	57	not	not	RB
40119	442	58	possibly	possibly	RB
40119	442	59	be	be	VB
40119	442	60	formed	form	VBN
40119	442	61	upon	upon	IN
40119	442	62	a	a	DT
40119	442	63	screen	screen	NN
40119	442	64	placed	place	VBN
40119	442	65	anywhere	anywhere	RB
40119	442	66	behind	behind	IN
40119	442	67	the	the	DT
40119	442	68	lens	lens	NN
40119	442	69	.	.	.
40119	443	1	Held	hold	VBN
40119	443	2	in	in	IN
40119	443	3	the	the	DT
40119	443	4	position	position	NN
40119	443	5	indicated	indicate	VBN
40119	443	6	by	by	IN
40119	443	7	the	the	DT
40119	443	8	line	line	NN
40119	443	9	C	C	NNP
40119	443	10	C	C	NNP
40119	443	11	,	,	,
40119	443	12	where	where	WRB
40119	443	13	it	-PRON-	PRP
40119	443	14	passes	pass	VBZ
40119	443	15	through	through	IN
40119	443	16	the	the	DT
40119	443	17	focus	focus	NN
40119	443	18	of	of	IN
40119	443	19	the	the	DT
40119	443	20	red	red	JJ
40119	443	21	rays	ray	NNS
40119	443	22	,	,	,
40119	443	23	the	the	DT
40119	443	24	screen	screen	NN
40119	443	25	cuts	cut	VBZ
40119	443	26	one	one	CD
40119	443	27	of	of	IN
40119	443	28	the	the	DT
40119	443	29	cones	cone	NNS
40119	443	30	of	of	IN
40119	443	31	violet	violet	NN
40119	443	32	light	light	NN
40119	443	33	,	,	,
40119	443	34	and	and	CC
40119	443	35	the	the	DT
40119	443	36	image	image	NN
40119	443	37	at	at	IN
40119	443	38	F	F	NNP
40119	443	39	will	will	MD
40119	443	40	appear	appear	VB
40119	443	41	to	to	TO
40119	443	42	be	be	VB
40119	443	43	surrounded	surround	VBN
40119	443	44	by	by	IN
40119	443	45	a	a	DT
40119	443	46	violet	violet	NN
40119	443	47	halo	halo	NN
40119	443	48	.	.	.
40119	444	1	Held	hold	VBN
40119	444	2	at	at	IN
40119	444	3	A	A	NNP
40119	444	4	A	A	NNP
40119	444	5	,	,	,
40119	444	6	the	the	DT
40119	444	7	screen	screen	NN
40119	444	8	evidently	evidently	RB
40119	444	9	receives	receive	VBZ
40119	444	10	an	an	DT
40119	444	11	image	image	NN
40119	444	12	with	with	IN
40119	444	13	a	a	DT
40119	444	14	red	red	JJ
40119	444	15	halo	halo	NN
40119	444	16	round	round	IN
40119	444	17	it	-PRON-	PRP
40119	444	18	.	.	.
40119	445	1	Only	only	RB
40119	445	2	at	at	IN
40119	445	3	B	b	NN
40119	445	4	B	B	NNP
40119	445	5	,	,	,
40119	445	6	in	in	IN
40119	445	7	the	the	DT
40119	445	8	plane	plane	NN
40119	445	9	where	where	WRB
40119	445	10	the	the	DT
40119	445	11	surfaces	surface	NNS
40119	445	12	of	of	IN
40119	445	13	the	the	DT
40119	445	14	red	red	NNP
40119	445	15	and	and	CC
40119	445	16	violet	violet	NNP
40119	445	17	cones	cone	NNS
40119	445	18	cut	cut	VBD
40119	445	19	one	one	CD
40119	445	20	another	another	DT
40119	445	21	,	,	,
40119	445	22	will	will	MD
40119	445	23	it	-PRON-	PRP
40119	445	24	be	be	VB
40119	445	25	possible	possible	JJ
40119	445	26	to	to	TO
40119	445	27	obtain	obtain	VB
40119	445	28	an	an	DT
40119	445	29	image	image	NN
40119	445	30	without	without	IN
40119	445	31	a	a	DT
40119	445	32	coloured	coloured	JJ
40119	445	33	border	border	NN
40119	445	34	;	;	:
40119	445	35	but	but	CC
40119	445	36	here	here	RB
40119	445	37	good	good	JJ
40119	445	38	definition	definition	NN
40119	445	39	is	be	VBZ
40119	445	40	unattainable	unattainable	JJ
40119	445	41	,	,	,
40119	445	42	for	for	IN
40119	445	43	neither	neither	CC
40119	445	44	the	the	DT
40119	445	45	red	red	JJ
40119	445	46	nor	nor	CC
40119	445	47	the	the	DT
40119	445	48	violet	violet	NN
40119	445	49	rays	ray	NNS
40119	445	50	are	be	VBP
40119	445	51	in	in	IN
40119	445	52	focus	focus	NN
40119	445	53	,	,	,
40119	445	54	and	and	CC
40119	445	55	the	the	DT
40119	445	56	luminous	luminous	JJ
40119	445	57	point	point	NN
40119	445	58	is	be	VBZ
40119	445	59	represented	represent	VBN
40119	445	60	by	by	IN
40119	445	61	a	a	DT
40119	445	62	purple	purple	JJ
40119	445	63	disk	disk	NN
40119	445	64	or	or	CC
40119	445	65	diffusion	diffusion	NN
40119	445	66	circle	circle	NN
40119	445	67	of	of	IN
40119	445	68	sensible	sensible	JJ
40119	445	69	diameter	diameter	NN
40119	445	70	.	.	.
40119	446	1	If	if	IN
40119	446	2	rays	ray	NNS
40119	446	3	of	of	IN
40119	446	4	every	every	DT
40119	446	5	possible	possible	JJ
40119	446	6	refrangibility	refrangibility	NN
40119	446	7	are	be	VBP
40119	446	8	allowed	allow	VBN
40119	446	9	to	to	TO
40119	446	10	fall	fall	VB
40119	446	11	upon	upon	IN
40119	446	12	the	the	DT
40119	446	13	lens	lens	NN
40119	446	14	,	,	,
40119	446	15	as	as	IN
40119	446	16	is	be	VBZ
40119	446	17	the	the	DT
40119	446	18	case	case	NN
40119	446	19	when	when	WRB
40119	446	20	the	the	DT
40119	446	21	source	source	NN
40119	446	22	of	of	IN
40119	446	23	light	light	NN
40119	446	24	is	be	VBZ
40119	446	25	not	not	RB
40119	446	26	shielded	shield	VBN
40119	446	27	by	by	IN
40119	446	28	any	any	DT
40119	446	29	coloured	coloured	JJ
40119	446	30	glass	glass	NN
40119	446	31	,	,	,
40119	446	32	there	there	EX
40119	446	33	will	will	MD
40119	446	34	be	be	VB
40119	446	35	formed	form	VBN
40119	446	36	an	an	DT
40119	446	37	indefinite	indefinite	JJ
40119	446	38	number	number	NN
40119	446	39	of	of	IN
40119	446	40	pairs	pair	NNS
40119	446	41	of	of	IN
40119	446	42	cones	cone	NNS
40119	446	43	,	,	,
40119	446	44	the	the	DT
40119	446	45	apices	apex	NNS
40119	446	46	of	of	IN
40119	446	47	which	which	WDT
40119	446	48	will	will	MD
40119	446	49	lie	lie	VB
40119	446	50	along	along	IN
40119	446	51	the	the	DT
40119	446	52	straight	straight	JJ
40119	446	53	line	line	NN
40119	446	54	joining	join	VBG
40119	446	55	H	h	NN
40119	446	56	and	and	CC
40119	446	57	F.	F.	NNP
40119	446	58	It	-PRON-	PRP
40119	446	59	is	be	VBZ
40119	446	60	clear	clear	JJ
40119	446	61	that	that	IN
40119	446	62	all	all	PDT
40119	446	63	these	these	DT
40119	446	64	cones	cone	NNS
40119	446	65	can	can	MD
40119	446	66	not	not	RB
40119	446	67	possibly	possibly	RB
40119	446	68	intersect	intersect	VB
40119	446	69	in	in	IN
40119	446	70	a	a	DT
40119	446	71	single	single	JJ
40119	446	72	plane	plane	NN
40119	446	73	,	,	,
40119	446	74	and	and	CC
40119	446	75	consequently	consequently	RB
40119	446	76	no	no	DT
40119	446	77	position	position	NN
40119	446	78	can	can	MD
40119	446	79	be	be	VB
40119	446	80	found	find	VBN
40119	446	81	where	where	WRB
40119	446	82	the	the	DT
40119	446	83	edge	edge	NN
40119	446	84	of	of	IN
40119	446	85	the	the	DT
40119	446	86	projected	project	VBN
40119	446	87	image	image	NN
40119	446	88	is	be	VBZ
40119	446	89	perfectly	perfectly	RB
40119	446	90	free	free	JJ
40119	446	91	from	from	IN
40119	446	92	colour	colour	NN
40119	446	93	,	,	,
40119	446	94	though	though	IN
40119	446	95	at	at	IN
40119	446	96	a	a	DT
40119	446	97	certain	certain	JJ
40119	446	98	distance	distance	NN
40119	446	99	from	from	IN
40119	446	100	the	the	DT
40119	446	101	lens	lens	NN
40119	446	102	,	,	,
40119	446	103	where	where	WRB
40119	446	104	the	the	DT
40119	446	105	brightest	bright	JJS
40119	446	106	constituents	constituent	NNS
40119	446	107	of	of	IN
40119	446	108	the	the	DT
40119	446	109	light	light	NN
40119	446	110	--	--	:
40119	446	111	namely	namely	RB
40119	446	112	,	,	,
40119	446	113	the	the	DT
40119	446	114	yellow	yellow	JJ
40119	446	115	and	and	CC
40119	446	116	green	green	JJ
40119	446	117	--	--	:
40119	446	118	are	be	VBP
40119	446	119	approximately	approximately	RB
40119	446	120	focussed	focusse	VBN
40119	446	121	,	,	,
40119	446	122	the	the	DT
40119	446	123	coloured	coloured	JJ
40119	446	124	border	border	NN
40119	446	125	is	be	VBZ
40119	446	126	least	least	RBS
40119	446	127	conspicuous	conspicuous	JJ
40119	446	128	,	,	,
40119	446	129	and	and	CC
40119	446	130	is	be	VBZ
40119	446	131	of	of	IN
40119	446	132	a	a	DT
40119	446	133	purple	purple	JJ
40119	446	134	tint	tint	NN
40119	446	135	,	,	,
40119	446	136	due	due	IN
40119	446	137	to	to	IN
40119	446	138	the	the	DT
40119	446	139	mixture	mixture	NN
40119	446	140	of	of	IN
40119	446	141	the	the	DT
40119	446	142	red	red	JJ
40119	446	143	and	and	CC
40119	446	144	violet	violet	NN
40119	446	145	rays	ray	NNS
40119	446	146	.	.	.
40119	447	1	For	for	IN
40119	447	2	these	these	DT
40119	447	3	reasons	reason	NNS
40119	447	4	a	a	DT
40119	447	5	single	single	JJ
40119	447	6	glass	glass	NN
40119	447	7	lens	lens	NN
40119	447	8	can	can	MD
40119	447	9	not	not	RB
40119	447	10	,	,	,
40119	447	11	except	except	IN
40119	447	12	with	with	IN
40119	447	13	homogeneous	homogeneous	JJ
40119	447	14	light	light	NN
40119	447	15	,	,	,
40119	447	16	be	be	VB
40119	447	17	made	make	VBN
40119	447	18	to	to	TO
40119	447	19	give	give	VB
40119	447	20	a	a	DT
40119	447	21	perfectly	perfectly	RB
40119	447	22	distinct	distinct	JJ
40119	447	23	image	image	NN
40119	447	24	of	of	IN
40119	447	25	a	a	DT
40119	447	26	luminous	luminous	JJ
40119	447	27	point	point	NN
40119	447	28	,	,	,
40119	447	29	nor	nor	CC
40119	447	30	of	of	IN
40119	447	31	an	an	DT
40119	447	32	illuminated	illuminate	VBN
40119	447	33	object	object	NN
40119	447	34	,	,	,
40119	447	35	the	the	DT
40119	447	36	surface	surface	NN
40119	447	37	of	of	IN
40119	447	38	which	which	WDT
40119	447	39	may	may	MD
40119	447	40	be	be	VB
40119	447	41	regarded	regard	VBN
40119	447	42	as	as	IN
40119	447	43	an	an	DT
40119	447	44	assemblage	assemblage	NN
40119	447	45	of	of	IN
40119	447	46	points	point	NNS
40119	447	47	.	.	.
40119	448	1	Such	such	PDT
40119	448	2	a	a	DT
40119	448	3	lens	lens	NN
40119	448	4	,	,	,
40119	448	5	therefore	therefore	RB
40119	448	6	,	,	,
40119	448	7	is	be	VBZ
40119	448	8	never	never	RB
40119	448	9	employed	employ	VBN
40119	448	10	when	when	WRB
40119	448	11	good	good	JJ
40119	448	12	definition	definition	NN
40119	448	13	is	be	VBZ
40119	448	14	required	require	VBN
40119	448	15	.	.	.
40119	449	1	The	the	DT
40119	449	2	confusion	confusion	NN
40119	449	3	resulting	result	VBG
40119	449	4	from	from	IN
40119	449	5	the	the	DT
40119	449	6	unequal	unequal	JJ
40119	449	7	refrangibility	refrangibility	NN
40119	449	8	of	of	IN
40119	449	9	the	the	DT
40119	449	10	differently	differently	RB
40119	449	11	coloured	coloured	JJ
40119	449	12	rays	ray	NNS
40119	449	13	is	be	VBZ
40119	449	14	said	say	VBN
40119	449	15	to	to	TO
40119	449	16	be	be	VB
40119	449	17	due	due	IN
40119	449	18	to	to	IN
40119	449	19	the	the	DT
40119	449	20	chromatic	chromatic	JJ
40119	449	21	aberration	aberration	NN
40119	449	22	of	of	IN
40119	449	23	the	the	DT
40119	449	24	lens	lens	NN
40119	449	25	.	.	.
40119	450	1	In	in	IN
40119	450	2	connection	connection	NN
40119	450	3	with	with	IN
40119	450	4	this	this	DT
40119	450	5	matter	matter	NN
40119	450	6	,	,	,
40119	450	7	the	the	DT
40119	450	8	history	history	NN
40119	450	9	of	of	IN
40119	450	10	physical	physical	JJ
40119	450	11	optics	optic	NNS
40119	450	12	contains	contain	VBZ
40119	450	13	an	an	DT
40119	450	14	interesting	interesting	JJ
40119	450	15	little	little	JJ
40119	450	16	episode	episode	NN
40119	450	17	.	.	.
40119	451	1	It	-PRON-	PRP
40119	451	2	occurred	occur	VBD
40119	451	3	to	to	IN
40119	451	4	Sir	Sir	NNP
40119	451	5	Isaac	Isaac	NNP
40119	451	6	Newton	Newton	NNP
40119	451	7	that	that	IN
40119	451	8	although	although	IN
40119	451	9	a	a	DT
40119	451	10	single	single	JJ
40119	451	11	lens	lens	NN
40119	451	12	could	could	MD
40119	451	13	never	never	RB
40119	451	14	be	be	VB
40119	451	15	free	free	JJ
40119	451	16	from	from	IN
40119	451	17	chromatic	chromatic	JJ
40119	451	18	aberration	aberration	NN
40119	451	19	,	,	,
40119	451	20	yet	yet	CC
40119	451	21	it	-PRON-	PRP
40119	451	22	might	may	MD
40119	451	23	be	be	VB
40119	451	24	possible	possible	JJ
40119	451	25	to	to	TO
40119	451	26	arrange	arrange	VB
40119	451	27	a	a	DT
40119	451	28	so	so	RB
40119	451	29	-	-	HYPH
40119	451	30	called	call	VBN
40119	451	31	achromatic	achromatic	JJ
40119	451	32	combination	combination	NN
40119	451	33	of	of	IN
40119	451	34	lenses	lense	NNS
40119	451	35	in	in	IN
40119	451	36	such	such	PDT
40119	451	37	a	a	DT
40119	451	38	manner	manner	NN
40119	451	39	as	as	IN
40119	451	40	to	to	TO
40119	451	41	overcome	overcome	VB
40119	451	42	the	the	DT
40119	451	43	defect	defect	NN
40119	451	44	and	and	CC
40119	451	45	bring	bring	VB
40119	451	46	all	all	PDT
40119	451	47	the	the	DT
40119	451	48	rays	ray	NNS
40119	451	49	issuing	issue	VBG
40119	451	50	from	from	IN
40119	451	51	a	a	DT
40119	451	52	point	point	NN
40119	451	53	,	,	,
40119	451	54	whatever	whatever	WDT
40119	451	55	their	-PRON-	PRP$
40119	451	56	refrangibility	refrangibility	NN
40119	451	57	,	,	,
40119	451	58	to	to	IN
40119	451	59	one	one	CD
40119	451	60	focus	focus	NN
40119	451	61	.	.	.
40119	452	1	Experiments	experiment	NNS
40119	452	2	which	which	WDT
40119	452	3	he	-PRON-	PRP
40119	452	4	undertook	undertake	VBD
40119	452	5	for	for	IN
40119	452	6	the	the	DT
40119	452	7	purpose	purpose	NN
40119	452	8	of	of	IN
40119	452	9	testing	test	VBG
40119	452	10	the	the	DT
40119	452	11	matter	matter	NN
40119	452	12	led	lead	VBD
40119	452	13	him	-PRON-	PRP
40119	452	14	to	to	TO
40119	452	15	form	form	VB
40119	452	16	the	the	DT
40119	452	17	conclusion	conclusion	NN
40119	452	18	that	that	IN
40119	452	19	such	such	PDT
40119	452	20	a	a	DT
40119	452	21	result	result	NN
40119	452	22	could	could	MD
40119	452	23	never	never	RB
40119	452	24	be	be	VB
40119	452	25	attained	attain	VBN
40119	452	26	,	,	,
40119	452	27	the	the	DT
40119	452	28	amount	amount	NN
40119	452	29	of	of	IN
40119	452	30	colour	colour	NN
40119	452	31	dispersion	dispersion	NN
40119	452	32	in	in	IN
40119	452	33	all	all	DT
40119	452	34	substances	substance	NNS
40119	452	35	being	be	VBG
40119	452	36	,	,	,
40119	452	37	as	as	IN
40119	452	38	he	-PRON-	PRP
40119	452	39	stated	state	VBD
40119	452	40	,	,	,
40119	452	41	always	always	RB
40119	452	42	exactly	exactly	RB
40119	452	43	proportional	proportional	JJ
40119	452	44	to	to	IN
40119	452	45	that	that	DT
40119	452	46	of	of	IN
40119	452	47	refraction	refraction	NN
40119	452	48	.	.	.
40119	453	1	For	for	IN
40119	453	2	this	this	DT
40119	453	3	reason	reason	NN
40119	453	4	he	-PRON-	PRP
40119	453	5	confidently	confidently	RB
40119	453	6	announced	announce	VBD
40119	453	7	that	that	IN
40119	453	8	it	-PRON-	PRP
40119	453	9	was	be	VBD
40119	453	10	useless	useless	JJ
40119	453	11	to	to	TO
40119	453	12	attempt	attempt	VB
40119	453	13	the	the	DT
40119	453	14	construction	construction	NN
40119	453	15	of	of	IN
40119	453	16	a	a	DT
40119	453	17	really	really	RB
40119	453	18	good	good	JJ
40119	453	19	refracting	refracting	NN
40119	453	20	telescope	telescope	NN
40119	453	21	,	,	,
40119	453	22	and	and	CC
40119	453	23	so	so	RB
40119	453	24	great	great	JJ
40119	453	25	was	be	VBD
40119	453	26	the	the	DT
40119	453	27	authority	authority	NN
40119	453	28	attaching	attach	VBG
40119	453	29	to	to	IN
40119	453	30	his	-PRON-	PRP$
40119	453	31	name	name	NN
40119	453	32	that	that	IN
40119	453	33	for	for	IN
40119	453	34	many	many	JJ
40119	453	35	years	year	NNS
40119	453	36	all	all	DT
40119	453	37	efforts	effort	NNS
40119	453	38	in	in	IN
40119	453	39	that	that	DT
40119	453	40	direction	direction	NN
40119	453	41	were	be	VBD
40119	453	42	abandoned	abandon	VBN
40119	453	43	.	.	.
40119	454	1	Nevertheless	nevertheless	RB
40119	454	2	from	from	IN
40119	454	3	time	time	NN
40119	454	4	to	to	IN
40119	454	5	time	time	NN
40119	454	6	certain	certain	JJ
40119	454	7	philosophers	philosopher	NNS
40119	454	8	ventured	venture	VBD
40119	454	9	to	to	TO
40119	454	10	surmise	surmise	VB
40119	454	11	that	that	IN
40119	454	12	Newton	Newton	NNP
40119	454	13	might	may	MD
40119	454	14	perhaps	perhaps	RB
40119	454	15	have	have	VB
40119	454	16	been	be	VBN
40119	454	17	mistaken	mistaken	JJ
40119	454	18	,	,	,
40119	454	19	and	and	CC
40119	454	20	the	the	DT
40119	454	21	curious	curious	JJ
40119	454	22	thing	thing	NN
40119	454	23	is	be	VBZ
40119	454	24	that	that	IN
40119	454	25	they	-PRON-	PRP
40119	454	26	all	all	DT
40119	454	27	based	base	VBD
40119	454	28	their	-PRON-	PRP$
40119	454	29	scepticism	scepticism	NN
40119	454	30	upon	upon	IN
40119	454	31	what	what	WP
40119	454	32	they	-PRON-	PRP
40119	454	33	considered	consider	VBD
40119	454	34	the	the	DT
40119	454	35	self	self	NN
40119	454	36	-	-	HYPH
40119	454	37	evident	evident	JJ
40119	454	38	fact	fact	NN
40119	454	39	of	of	IN
40119	454	40	the	the	DT
40119	454	41	achromatism	achromatism	NN
40119	454	42	of	of	IN
40119	454	43	the	the	DT
40119	454	44	eye	eye	NN
40119	454	45	.	.	.
40119	455	1	The	the	DT
40119	455	2	system	system	NN
40119	455	3	of	of	IN
40119	455	4	lenses	lense	NNS
40119	455	5	in	in	IN
40119	455	6	the	the	DT
40119	455	7	eye	eye	NN
40119	455	8	,	,	,
40119	455	9	they	-PRON-	PRP
40119	455	10	argued	argue	VBD
40119	455	11	,	,	,
40119	455	12	being	be	VBG
40119	455	13	unquestionably	unquestionably	RB
40119	455	14	achromatic	achromatic	JJ
40119	455	15	,	,	,
40119	455	16	why	why	WRB
40119	455	17	should	should	MD
40119	455	18	not	not	RB
40119	455	19	an	an	DT
40119	455	20	equally	equally	RB
40119	455	21	effective	effective	JJ
40119	455	22	combination	combination	NN
40119	455	23	be	be	VB
40119	455	24	constructed	construct	VBN
40119	455	25	artificially	artificially	RB
40119	455	26	?	?	.
40119	456	1	At	at	IN
40119	456	2	length	length	NN
40119	456	3	,	,	,
40119	456	4	more	more	JJR
40119	456	5	than	than	IN
40119	456	6	eighty	eighty	CD
40119	456	7	years	year	NNS
40119	456	8	after	after	IN
40119	456	9	Newton	Newton	NNP
40119	456	10	had	have	VBD
40119	456	11	made	make	VBN
40119	456	12	and	and	CC
40119	456	13	published	publish	VBN
40119	456	14	his	-PRON-	PRP$
40119	456	15	fundamental	fundamental	JJ
40119	456	16	experiments	experiment	NNS
40119	456	17	,	,	,
40119	456	18	it	-PRON-	PRP
40119	456	19	occurred	occur	VBD
40119	456	20	to	to	IN
40119	456	21	a	a	DT
40119	456	22	working	work	VBG
40119	456	23	optician	optician	NN
40119	456	24	,	,	,
40119	456	25	John	John	NNP
40119	456	26	Dollond	Dollond	NNP
40119	456	27	,	,	,
40119	456	28	that	that	IN
40119	456	29	it	-PRON-	PRP
40119	456	30	might	may	MD
40119	456	31	be	be	VB
40119	456	32	worth	worth	JJ
40119	456	33	while	while	IN
40119	456	34	to	to	TO
40119	456	35	repeat	repeat	VB
40119	456	36	them	-PRON-	PRP
40119	456	37	,	,	,
40119	456	38	and	and	CC
40119	456	39	upon	upon	IN
40119	456	40	doing	do	VBG
40119	456	41	so	so	RB
40119	456	42	he	-PRON-	PRP
40119	456	43	at	at	IN
40119	456	44	once	once	RB
40119	456	45	found	find	VBD
40119	456	46	that	that	IN
40119	456	47	Newton	Newton	NNP
40119	456	48	was	be	VBD
40119	456	49	wrong	wrong	JJ
40119	456	50	in	in	IN
40119	456	51	his	-PRON-	PRP$
40119	456	52	facts	fact	NNS
40119	456	53	,	,	,
40119	456	54	the	the	DT
40119	456	55	results	result	NNS
40119	456	56	as	as	IN
40119	456	57	recorded	record	VBN
40119	456	58	by	by	IN
40119	456	59	him	-PRON-	PRP
40119	456	60	being	be	VBG
40119	456	61	in	in	IN
40119	456	62	direct	direct	JJ
40119	456	63	opposition	opposition	NN
40119	456	64	to	to	IN
40119	456	65	the	the	DT
40119	456	66	truth	truth	NN
40119	456	67	.	.	.
40119	457	1	With	with	IN
40119	457	2	proper	proper	JJ
40119	457	3	respect	respect	NN
40119	457	4	for	for	IN
40119	457	5	the	the	DT
40119	457	6	memory	memory	NN
40119	457	7	of	of	IN
40119	457	8	a	a	DT
40119	457	9	great	great	JJ
40119	457	10	man	man	NN
40119	457	11	it	-PRON-	PRP
40119	457	12	is	be	VBZ
40119	457	13	usual	usual	JJ
40119	457	14	to	to	TO
40119	457	15	speak	speak	VB
40119	457	16	of	of	IN
40119	457	17	Newton	Newton	NNP
40119	457	18	's	's	POS
40119	457	19	observation	observation	NN
40119	457	20	as	as	IN
40119	457	21	a	a	DT
40119	457	22	"	"	``
40119	457	23	hasty	hasty	JJ
40119	457	24	"	"	''
40119	457	25	one	one	CD
40119	457	26	,	,	,
40119	457	27	but	but	CC
40119	457	28	if	if	IN
40119	457	29	in	in	IN
40119	457	30	these	these	DT
40119	457	31	days	day	NNS
40119	457	32	a	a	DT
40119	457	33	junior	junior	JJ
40119	457	34	science	science	NN
40119	457	35	student	student	NN
40119	457	36	were	be	VBD
40119	457	37	to	to	TO
40119	457	38	be	be	VB
40119	457	39	guilty	guilty	JJ
40119	457	40	of	of	IN
40119	457	41	a	a	DT
40119	457	42	similar	similar	JJ
40119	457	43	lapse	lapse	NN
40119	457	44	,	,	,
40119	457	45	his	-PRON-	PRP$
40119	457	46	conduct	conduct	NN
40119	457	47	would	would	MD
40119	457	48	not	not	RB
40119	457	49	impossibly	impossibly	RB
40119	457	50	be	be	VB
40119	457	51	stigmatised	stigmatise	VBN
40119	457	52	as	as	IN
40119	457	53	grossly	grossly	RB
40119	457	54	careless	careless	JJ
40119	457	55	.	.	.
40119	458	1	Having	have	VBG
40119	458	2	established	establish	VBN
40119	458	3	Newton	Newton	NNP
40119	458	4	's	's	POS
40119	458	5	error	error	NN
40119	458	6	,	,	,
40119	458	7	Dollond	Dollond	NNP
40119	458	8	found	find	VBD
40119	458	9	little	little	JJ
40119	458	10	difficulty	difficulty	NN
40119	458	11	in	in	IN
40119	458	12	constructing	construct	VBG
40119	458	13	achromatic	achromatic	JJ
40119	458	14	lenses	lense	NNS
40119	458	15	of	of	IN
40119	458	16	very	very	RB
40119	458	17	satisfactory	satisfactory	JJ
40119	458	18	quality	quality	NN
40119	458	19	;	;	:
40119	458	20	telescopes	telescope	NNS
40119	458	21	of	of	IN
40119	458	22	his	-PRON-	PRP$
40119	458	23	manufacture	manufacture	NN
40119	458	24	long	long	RB
40119	458	25	enjoyed	enjoy	VBD
40119	458	26	the	the	DT
40119	458	27	highest	high	JJS
40119	458	28	reputation	reputation	NN
40119	458	29	,	,	,
40119	458	30	and	and	CC
40119	458	31	the	the	DT
40119	458	32	best	good	JJS
40119	458	33	optical	optical	JJ
40119	458	34	instruments	instrument	NNS
40119	458	35	of	of	IN
40119	458	36	the	the	DT
40119	458	37	present	present	JJ
40119	458	38	day	day	NN
40119	458	39	are	be	VBP
40119	458	40	the	the	DT
40119	458	41	direct	direct	JJ
40119	458	42	offspring	offspring	NN
40119	458	43	of	of	IN
40119	458	44	his	-PRON-	PRP$
40119	458	45	invention	invention	NN
40119	458	46	.	.	.
40119	459	1	Those	those	DT
40119	459	2	who	who	WP
40119	459	3	entertained	entertain	VBD
40119	459	4	the	the	DT
40119	459	5	opinion	opinion	NN
40119	459	6	that	that	IN
40119	459	7	Newton	Newton	NNP
40119	459	8	's	's	POS
40119	459	9	conclusion	conclusion	NN
40119	459	10	was	be	VBD
40119	459	11	erroneous	erroneous	JJ
40119	459	12	were	be	VBD
40119	459	13	therefore	therefore	RB
40119	459	14	in	in	IN
40119	459	15	the	the	DT
40119	459	16	right	right	NN
40119	459	17	,	,	,
40119	459	18	but	but	CC
40119	459	19	it	-PRON-	PRP
40119	459	20	is	be	VBZ
40119	459	21	remarkable	remarkable	JJ
40119	459	22	that	that	IN
40119	459	23	the	the	DT
40119	459	24	reason	reason	NN
40119	459	25	upon	upon	IN
40119	459	26	which	which	WDT
40119	459	27	that	that	DT
40119	459	28	opinion	opinion	NN
40119	459	29	rested	rest	VBD
40119	459	30	was	be	VBD
40119	459	31	altogether	altogether	RB
40119	459	32	invalid	invalid	JJ
40119	459	33	,	,	,
40119	459	34	for	for	IN
40119	459	35	,	,	,
40119	459	36	as	as	IN
40119	459	37	I	-PRON-	PRP
40119	459	38	have	have	VBP
40119	459	39	said	say	VBD
40119	459	40	,	,	,
40119	459	41	the	the	DT
40119	459	42	lenses	lense	NNS
40119	459	43	of	of	IN
40119	459	44	the	the	DT
40119	459	45	eye	eye	NN
40119	459	46	are	be	VBP
40119	459	47	by	by	IN
40119	459	48	no	no	DT
40119	459	49	means	means	NN
40119	459	50	achromatic	achromatic	JJ
40119	459	51	.	.	.
40119	460	1	Of	of	IN
40119	460	2	the	the	DT
40119	460	3	many	many	JJ
40119	460	4	ways	way	NNS
40119	460	5	in	in	IN
40119	460	6	which	which	WDT
40119	460	7	this	this	DT
40119	460	8	can	can	MD
40119	460	9	be	be	VB
40119	460	10	demonstrated	demonstrate	VBN
40119	460	11	,	,	,
40119	460	12	the	the	DT
40119	460	13	following	follow	VBG
40119	460	14	is	be	VBZ
40119	460	15	one	one	CD
40119	460	16	of	of	IN
40119	460	17	the	the	DT
40119	460	18	most	most	RBS
40119	460	19	impressive	impressive	JJ
40119	460	20	.	.	.
40119	461	1	Let	let	VB
40119	461	2	a	a	DT
40119	461	3	long	long	JJ
40119	461	4	and	and	CC
40119	461	5	narrow	narrow	JJ
40119	461	6	spectrum	spectrum	NN
40119	461	7	of	of	IN
40119	461	8	the	the	DT
40119	461	9	electric	electric	JJ
40119	461	10	light	light	NN
40119	461	11	be	be	VB
40119	461	12	projected	project	VBN
40119	461	13	upon	upon	IN
40119	461	14	a	a	DT
40119	461	15	white	white	JJ
40119	461	16	screen	screen	NN
40119	461	17	,	,	,
40119	461	18	the	the	DT
40119	461	19	prisms	prism	NNS
40119	461	20	and	and	CC
40119	461	21	lenses	lense	NNS
40119	461	22	being	be	VBG
40119	461	23	carefully	carefully	RB
40119	461	24	arranged	arrange	VBN
40119	461	25	in	in	IN
40119	461	26	such	such	PDT
40119	461	27	a	a	DT
40119	461	28	manner	manner	NN
40119	461	29	as	as	IN
40119	461	30	to	to	TO
40119	461	31	ensure	ensure	VB
40119	461	32	that	that	IN
40119	461	33	the	the	DT
40119	461	34	upper	upper	JJ
40119	461	35	and	and	CC
40119	461	36	lower	low	JJR
40119	461	37	edges	edge	NNS
40119	461	38	of	of	IN
40119	461	39	the	the	DT
40119	461	40	spectrum	spectrum	NN
40119	461	41	are	be	VBP
40119	461	42	clearly	clearly	RB
40119	461	43	defined	define	VBN
40119	461	44	and	and	CC
40119	461	45	strictly	strictly	RB
40119	461	46	parallel	parallel	JJ
40119	461	47	.	.	.
40119	462	1	To	to	IN
40119	462	2	an	an	DT
40119	462	3	observer	observer	NN
40119	462	4	standing	stand	VBG
40119	462	5	close	close	RB
40119	462	6	to	to	IN
40119	462	7	the	the	DT
40119	462	8	screen	screen	NN
40119	462	9	,	,	,
40119	462	10	the	the	DT
40119	462	11	spectrum	spectrum	NN
40119	462	12	will	will	MD
40119	462	13	present	present	VB
40119	462	14	the	the	DT
40119	462	15	appearance	appearance	NN
40119	462	16	of	of	IN
40119	462	17	a	a	DT
40119	462	18	bright	bright	JJ
40119	462	19	parti	parti	NN
40119	462	20	-	-	HYPH
40119	462	21	coloured	colour	VBN
40119	462	22	rectangle	rectangle	NN
40119	462	23	.	.	.
40119	463	1	But	but	CC
40119	463	2	viewed	view	VBN
40119	463	3	from	from	IN
40119	463	4	a	a	DT
40119	463	5	distance	distance	NN
40119	463	6	of	of	IN
40119	463	7	a	a	DT
40119	463	8	few	few	JJ
40119	463	9	feet	foot	NNS
40119	463	10	the	the	DT
40119	463	11	spectrum	spectrum	NN
40119	463	12	will	will	MD
40119	463	13	not	not	RB
40119	463	14	seem	seem	VB
40119	463	15	to	to	TO
40119	463	16	be	be	VB
40119	463	17	rectangular	rectangular	JJ
40119	463	18	,	,	,
40119	463	19	its	-PRON-	PRP$
40119	463	20	upper	upper	JJ
40119	463	21	and	and	CC
40119	463	22	lower	low	JJR
40119	463	23	edges	edge	NNS
40119	463	24	no	no	RB
40119	463	25	longer	long	RBR
40119	463	26	appearing	appear	VBG
40119	463	27	to	to	TO
40119	463	28	be	be	VB
40119	463	29	parallel	parallel	JJ
40119	463	30	,	,	,
40119	463	31	but	but	CC
40119	463	32	to	to	TO
40119	463	33	diverge	diverge	VB
40119	463	34	,	,	,
40119	463	35	fan	fan	NN
40119	463	36	-	-	HYPH
40119	463	37	like	like	JJ
40119	463	38	,	,	,
40119	463	39	towards	towards	IN
40119	463	40	the	the	DT
40119	463	41	blue	blue	JJ
40119	463	42	and	and	CC
40119	463	43	violet	violet	NN
40119	463	44	,	,	,
40119	463	45	as	as	IN
40119	463	46	shown	show	VBN
40119	463	47	in	in	IN
40119	463	48	Fig	Fig	NNP
40119	463	49	.	.	.
40119	464	1	13	13	CD
40119	464	2	.	.	.
40119	465	1	This	this	DT
40119	465	2	is	be	VBZ
40119	465	3	because	because	IN
40119	465	4	the	the	DT
40119	465	5	violet	violet	NN
40119	465	6	and	and	CC
40119	465	7	some	some	DT
40119	465	8	of	of	IN
40119	465	9	the	the	DT
40119	465	10	blue	blue	JJ
40119	465	11	rays	ray	NNS
40119	465	12	proceeding	proceed	VBG
40119	465	13	from	from	IN
40119	465	14	an	an	DT
40119	465	15	object	object	NN
40119	465	16	at	at	IN
40119	465	17	a	a	DT
40119	465	18	little	little	JJ
40119	465	19	distance	distance	NN
40119	465	20	can	can	MD
40119	465	21	not	not	RB
40119	465	22	by	by	IN
40119	465	23	any	any	DT
40119	465	24	effort	effort	NN
40119	465	25	be	be	VB
40119	465	26	focussed	focusse	VBN
40119	465	27	upon	upon	IN
40119	465	28	the	the	DT
40119	465	29	retina	retina	NNP
40119	465	30	.	.	.
40119	466	1	They	-PRON-	PRP
40119	466	2	are	be	VBP
40119	466	3	too	too	RB
40119	466	4	much	much	RB
40119	466	5	refracted	refract	VBN
40119	466	6	,	,	,
40119	466	7	and	and	CC
40119	466	8	the	the	DT
40119	466	9	mechanism	mechanism	NN
40119	466	10	by	by	IN
40119	466	11	which	which	WDT
40119	466	12	the	the	DT
40119	466	13	eye	eye	NN
40119	466	14	is	be	VBZ
40119	466	15	adjusted	adjust	VBN
40119	466	16	is	be	VBZ
40119	466	17	incompetent	incompetent	JJ
40119	466	18	to	to	TO
40119	466	19	diminish	diminish	VB
40119	466	20	the	the	DT
40119	466	21	convexity	convexity	NN
40119	466	22	of	of	IN
40119	466	23	the	the	DT
40119	466	24	lenses	lense	NNS
40119	466	25	sufficiently	sufficiently	RB
40119	466	26	to	to	TO
40119	466	27	enable	enable	VB
40119	466	28	them	-PRON-	PRP
40119	466	29	to	to	TO
40119	466	30	project	project	VB
40119	466	31	a	a	DT
40119	466	32	clear	clear	JJ
40119	466	33	image	image	NN
40119	466	34	.	.	.
40119	467	1	Every	every	DT
40119	467	2	point	point	NN
40119	467	3	is	be	VBZ
40119	467	4	expanded	expand	VBN
40119	467	5	into	into	IN
40119	467	6	a	a	DT
40119	467	7	luminous	luminous	JJ
40119	467	8	circle	circle	NN
40119	467	9	,	,	,
40119	467	10	which	which	WDT
40119	467	11	is	be	VBZ
40119	467	12	the	the	DT
40119	467	13	larger	large	JJR
40119	467	14	the	the	DT
40119	467	15	more	more	RBR
40119	467	16	refrangible	refrangible	JJ
40119	467	17	the	the	DT
40119	467	18	rays	ray	NNS
40119	467	19	,	,	,
40119	467	20	and	and	CC
40119	467	21	it	-PRON-	PRP
40119	467	22	is	be	VBZ
40119	467	23	the	the	DT
40119	467	24	extension	extension	NN
40119	467	25	of	of	IN
40119	467	26	these	these	DT
40119	467	27	diffusion	diffusion	NN
40119	467	28	circles	circle	NNS
40119	467	29	beyond	beyond	IN
40119	467	30	the	the	DT
40119	467	31	proper	proper	JJ
40119	467	32	boundaries	boundary	NNS
40119	467	33	of	of	IN
40119	467	34	the	the	DT
40119	467	35	image	image	NN
40119	467	36	that	that	WDT
40119	467	37	gives	give	VBZ
40119	467	38	the	the	DT
40119	467	39	appearance	appearance	NN
40119	467	40	of	of	IN
40119	467	41	increased	increase	VBN
40119	467	42	breadth	breadth	NN
40119	467	43	.	.	.
40119	468	1	It	-PRON-	PRP
40119	468	2	is	be	VBZ
40119	468	3	a	a	DT
40119	468	4	simple	simple	JJ
40119	468	5	matter	matter	NN
40119	468	6	to	to	TO
40119	468	7	counteract	counteract	VB
40119	468	8	the	the	DT
40119	468	9	effects	effect	NNS
40119	468	10	of	of	IN
40119	468	11	undue	undue	JJ
40119	468	12	convexity	convexity	NN
40119	468	13	by	by	IN
40119	468	14	means	mean	NNS
40119	468	15	of	of	IN
40119	468	16	a	a	DT
40119	468	17	concave	concave	NNP
40119	468	18	lens	lens	NN
40119	468	19	.	.	.
40119	469	1	If	if	IN
40119	469	2	a	a	DT
40119	469	3	normal	normal	JJ
40119	469	4	-	-	HYPH
40119	469	5	eyed	eyed	JJ
40119	469	6	person	person	NN
40119	469	7	,	,	,
40119	469	8	to	to	TO
40119	469	9	whom	whom	WP
40119	469	10	the	the	DT
40119	469	11	violet	violet	NN
40119	469	12	end	end	NN
40119	469	13	of	of	IN
40119	469	14	the	the	DT
40119	469	15	spectrum	spectrum	NN
40119	469	16	when	when	WRB
40119	469	17	seen	see	VBN
40119	469	18	from	from	IN
40119	469	19	a	a	DT
40119	469	20	distance	distance	NN
40119	469	21	appears	appear	VBZ
40119	469	22	blurred	blur	VBN
40119	469	23	and	and	CC
40119	469	24	widened	widen	VBN
40119	469	25	,	,	,
40119	469	26	will	will	MD
40119	469	27	look	look	VB
40119	469	28	at	at	IN
40119	469	29	it	-PRON-	PRP
40119	469	30	through	through	IN
40119	469	31	suitable	suitable	JJ
40119	469	32	glasses	glass	NNS
40119	469	33	adapted	adapt	VBN
40119	469	34	for	for	IN
40119	469	35	short	short	JJ
40119	469	36	sight	sight	NN
40119	469	37	,	,	,
40119	469	38	he	-PRON-	PRP
40119	469	39	will	will	MD
40119	469	40	at	at	IN
40119	469	41	once	once	RB
40119	469	42	see	see	VB
40119	469	43	it	-PRON-	PRP
40119	469	44	clearly	clearly	RB
40119	469	45	defined	define	VBN
40119	469	46	and	and	CC
40119	469	47	of	of	IN
40119	469	48	its	-PRON-	PRP$
40119	469	49	proper	proper	JJ
40119	469	50	width	width	NN
40119	469	51	.	.	.
40119	470	1	[	[	-LRB-
40119	470	2	Illustration	illustration	NN
40119	470	3	:	:	:
40119	470	4	_	_	NNP
40119	470	5	Fig	Fig	NNP
40119	470	6	.	.	.
40119	471	1	13.--Narrow	13.--narrow	CD
40119	471	2	Spectrum	Spectrum	NNP
40119	471	3	as	as	IN
40119	471	4	seen	see	VBN
40119	471	5	from	from	IN
40119	471	6	a	a	DT
40119	471	7	distance	distance	NN
40119	471	8	.	.	.
40119	471	9	_	_	NNP
40119	471	10	]	]	-RRB-
40119	471	11	Let	let	VB
40119	471	12	a	a	DT
40119	471	13	rectangular	rectangular	JJ
40119	471	14	patch	patch	NN
40119	471	15	of	of	IN
40119	471	16	white	white	JJ
40119	471	17	light	light	NN
40119	471	18	having	have	VBG
40119	471	19	about	about	IN
40119	471	20	the	the	DT
40119	471	21	same	same	JJ
40119	471	22	dimensions	dimension	NNS
40119	471	23	as	as	IN
40119	471	24	the	the	DT
40119	471	25	rectangular	rectangular	JJ
40119	471	26	spectrum	spectrum	NN
40119	471	27	be	be	VB
40119	471	28	now	now	RB
40119	471	29	thrown	throw	VBN
40119	471	30	upon	upon	IN
40119	471	31	the	the	DT
40119	471	32	screen	screen	NN
40119	471	33	.	.	.
40119	472	1	The	the	DT
40119	472	2	light	light	NN
40119	472	3	reflected	reflect	VBD
40119	472	4	from	from	IN
40119	472	5	the	the	DT
40119	472	6	patch	patch	NN
40119	472	7	will	will	MD
40119	472	8	contain	contain	VB
40119	472	9	,	,	,
40119	472	10	as	as	IN
40119	472	11	before	before	RB
40119	472	12	,	,	,
40119	472	13	all	all	PDT
40119	472	14	the	the	DT
40119	472	15	various	various	JJ
40119	472	16	spectral	spectral	JJ
40119	472	17	colours	colour	NNS
40119	472	18	,	,	,
40119	472	19	but	but	CC
40119	472	20	they	-PRON-	PRP
40119	472	21	will	will	MD
40119	472	22	be	be	VB
40119	472	23	mixed	mix	VBN
40119	472	24	or	or	CC
40119	472	25	superposed	superpose	VBN
40119	472	26	,	,	,
40119	472	27	instead	instead	RB
40119	472	28	of	of	IN
40119	472	29	being	be	VBG
40119	472	30	spread	spread	VBN
40119	472	31	out	out	RP
40119	472	32	side	side	NN
40119	472	33	by	by	IN
40119	472	34	side	side	NN
40119	472	35	.	.	.
40119	473	1	The	the	DT
40119	473	2	patch	patch	NN
40119	473	3	will	will	MD
40119	473	4	send	send	VB
40119	473	5	forth	forth	RB
40119	473	6	,	,	,
40119	473	7	among	among	IN
40119	473	8	others	other	NNS
40119	473	9	,	,	,
40119	473	10	can	can	MD
40119	473	11	yellow	yellow	VB
40119	473	12	and	and	CC
40119	473	13	green	green	JJ
40119	473	14	rays	ray	NNS
40119	473	15	,	,	,
40119	473	16	which	which	WDT
40119	473	17	the	the	DT
40119	473	18	eye	eye	NN
40119	473	19	easily	easily	RB
40119	473	20	focus	focus	VBP
40119	473	21	;	;	:
40119	473	22	it	-PRON-	PRP
40119	473	23	will	will	MD
40119	473	24	also	also	RB
40119	473	25	send	send	VB
40119	473	26	out	out	RP
40119	473	27	violet	violet	NN
40119	473	28	rays	ray	NNS
40119	473	29	,	,	,
40119	473	30	which	which	WDT
40119	473	31	,	,	,
40119	473	32	as	as	IN
40119	473	33	we	-PRON-	PRP
40119	473	34	have	have	VBP
40119	473	35	shown	show	VBN
40119	473	36	,	,	,
40119	473	37	can	can	MD
40119	473	38	not	not	RB
40119	473	39	be	be	VB
40119	473	40	focussed	focusse	VBN
40119	473	41	by	by	IN
40119	473	42	the	the	DT
40119	473	43	unassisted	unassisted	JJ
40119	473	44	eye	eye	NN
40119	473	45	.	.	.
40119	474	1	Owing	owe	VBG
40119	474	2	to	to	IN
40119	474	3	the	the	DT
40119	474	4	existence	existence	NN
40119	474	5	of	of	IN
40119	474	6	diffusion	diffusion	NN
40119	474	7	circles	circle	NNS
40119	474	8	there	there	EX
40119	474	9	must	must	MD
40119	474	10	necessarily	necessarily	RB
40119	474	11	be	be	VB
40119	474	12	formed	form	VBN
40119	474	13	upon	upon	IN
40119	474	14	the	the	DT
40119	474	15	retina	retina	NNP
40119	474	16	a	a	DT
40119	474	17	violet	violet	NN
40119	474	18	image	image	NN
40119	474	19	larger	large	JJR
40119	474	20	than	than	IN
40119	474	21	the	the	DT
40119	474	22	approximately	approximately	RB
40119	474	23	superposed	superpose	VBN
40119	474	24	images	image	NNS
40119	474	25	due	due	JJ
40119	474	26	to	to	IN
40119	474	27	rays	ray	NNS
40119	474	28	of	of	IN
40119	474	29	brighter	bright	JJR
40119	474	30	colours	colour	NNS
40119	474	31	.	.	.
40119	475	1	Viewed	view	VBN
40119	475	2	from	from	IN
40119	475	3	a	a	DT
40119	475	4	distance	distance	NN
40119	475	5	therefore	therefore	RB
40119	475	6	the	the	DT
40119	475	7	white	white	JJ
40119	475	8	patch	patch	NN
40119	475	9	might	may	MD
40119	475	10	be	be	VB
40119	475	11	expected	expect	VBN
40119	475	12	to	to	TO
40119	475	13	exhibit	exhibit	VB
40119	475	14	a	a	DT
40119	475	15	violet	violet	NN
40119	475	16	border	border	NN
40119	475	17	.	.	.
40119	476	1	Yet	yet	CC
40119	476	2	it	-PRON-	PRP
40119	476	3	may	may	MD
40119	476	4	be	be	VB
40119	476	5	confidently	confidently	RB
40119	476	6	asserted	assert	VBN
40119	476	7	that	that	IN
40119	476	8	the	the	DT
40119	476	9	observer	observer	NN
40119	476	10	will	will	MD
40119	476	11	not	not	RB
40119	476	12	be	be	VB
40119	476	13	conscious	conscious	JJ
40119	476	14	of	of	IN
40119	476	15	seeing	see	VBG
40119	476	16	any	any	DT
40119	476	17	such	such	JJ
40119	476	18	border	border	NN
40119	476	19	,	,	,
40119	476	20	for	for	IN
40119	476	21	though	though	IN
40119	476	22	one	one	CD
40119	476	23	actually	actually	RB
40119	476	24	exists	exist	VBZ
40119	476	25	,	,	,
40119	476	26	it	-PRON-	PRP
40119	476	27	is	be	VBZ
40119	476	28	possessed	possess	VBN
40119	476	29	of	of	IN
40119	476	30	such	such	PDT
40119	476	31	comparatively	comparatively	RB
40119	476	32	feeble	feeble	JJ
40119	476	33	luminosity	luminosity	NN
40119	476	34	that	that	IN
40119	476	35	it	-PRON-	PRP
40119	476	36	is	be	VBZ
40119	476	37	lost	lose	VBN
40119	476	38	in	in	IN
40119	476	39	the	the	DT
40119	476	40	glare	glare	NN
40119	476	41	produced	produce	VBN
40119	476	42	by	by	IN
40119	476	43	the	the	DT
40119	476	44	brighter	bright	JJR
40119	476	45	rays	ray	NNS
40119	476	46	.	.	.
40119	477	1	It	-PRON-	PRP
40119	477	2	is	be	VBZ
40119	477	3	,	,	,
40119	477	4	however	however	RB
40119	477	5	,	,	,
40119	477	6	possible	possible	JJ
40119	477	7	to	to	TO
40119	477	8	cut	cut	VB
40119	477	9	off	off	RP
40119	477	10	these	these	DT
40119	477	11	brighter	bright	JJR
40119	477	12	rays	ray	NNS
40119	477	13	by	by	IN
40119	477	14	interposing	interpose	VBG
40119	477	15	between	between	IN
40119	477	16	the	the	DT
40119	477	17	projection	projection	NN
40119	477	18	lantern	lantern	NN
40119	477	19	and	and	CC
40119	477	20	the	the	DT
40119	477	21	screen	screen	NN
40119	477	22	a	a	DT
40119	477	23	combination	combination	NN
40119	477	24	of	of	IN
40119	477	25	glasses	glass	NNS
40119	477	26	which	which	WDT
40119	477	27	has	have	VBZ
40119	477	28	been	be	VBN
40119	477	29	found	find	VBN
40119	477	30	by	by	IN
40119	477	31	trial	trial	NN
40119	477	32	with	with	IN
40119	477	33	a	a	DT
40119	477	34	spectroscope	spectroscope	NN
40119	477	35	to	to	TO
40119	477	36	transmit	transmit	VB
40119	477	37	only	only	JJ
40119	477	38	dark	dark	JJ
40119	477	39	blue	blue	NN
40119	477	40	and	and	CC
40119	477	41	violet	violet	NN
40119	477	42	light	light	NN
40119	477	43	.	.	.
40119	478	1	The	the	DT
40119	478	2	rectangle	rectangle	NN
40119	478	3	will	will	MD
40119	478	4	then	then	RB
40119	478	5	be	be	VB
40119	478	6	of	of	IN
40119	478	7	a	a	DT
40119	478	8	blue	blue	JJ
40119	478	9	-	-	HYPH
40119	478	10	violet	violet	NN
40119	478	11	colour	colour	NN
40119	478	12	,	,	,
40119	478	13	and	and	CC
40119	478	14	when	when	WRB
40119	478	15	looked	look	VBD
40119	478	16	at	at	IN
40119	478	17	closely	closely	RB
40119	478	18	,	,	,
40119	478	19	will	will	MD
40119	478	20	still	still	RB
40119	478	21	be	be	VB
40119	478	22	quite	quite	RB
40119	478	23	clear	clear	JJ
40119	478	24	and	and	CC
40119	478	25	sharply	sharply	RB
40119	478	26	defined	define	VBN
40119	478	27	,	,	,
40119	478	28	but	but	CC
40119	478	29	viewed	view	VBD
40119	478	30	from	from	IN
40119	478	31	a	a	DT
40119	478	32	little	little	JJ
40119	478	33	distance	distance	NN
40119	478	34	it	-PRON-	PRP
40119	478	35	will	will	MD
40119	478	36	appear	appear	VB
40119	478	37	blurred	blur	VBN
40119	478	38	and	and	CC
40119	478	39	of	of	IN
40119	478	40	an	an	DT
40119	478	41	exaggerated	exaggerated	JJ
40119	478	42	size	size	NN
40119	478	43	.	.	.
40119	479	1	Another	another	DT
40119	479	2	and	and	CC
40119	479	3	perhaps	perhaps	RB
40119	479	4	even	even	RB
40119	479	5	better	well	JJR
40119	479	6	way	way	NN
40119	479	7	of	of	IN
40119	479	8	demonstrating	demonstrate	VBG
40119	479	9	this	this	DT
40119	479	10	last	last	JJ
40119	479	11	effect	effect	NN
40119	479	12	is	be	VBZ
40119	479	13	to	to	TO
40119	479	14	enclose	enclose	VB
40119	479	15	the	the	DT
40119	479	16	source	source	NN
40119	479	17	of	of	IN
40119	479	18	light	light	NN
40119	479	19	(	(	-LRB-
40119	479	20	which	which	WDT
40119	479	21	should	should	MD
40119	479	22	be	be	VB
40119	479	23	a	a	DT
40119	479	24	powerful	powerful	JJ
40119	479	25	one	one	NN
40119	479	26	,	,	,
40119	479	27	such	such	JJ
40119	479	28	as	as	IN
40119	479	29	an	an	DT
40119	479	30	arc	arc	NNP
40119	479	31	lamp	lamp	NN
40119	479	32	or	or	CC
40119	479	33	limelight	limelight	NN
40119	479	34	)	)	-RRB-
40119	479	35	inside	inside	IN
40119	479	36	a	a	DT
40119	479	37	box	box	NN
40119	479	38	having	have	VBG
40119	479	39	a	a	DT
40119	479	40	ground	ground	NN
40119	479	41	-	-	HYPH
40119	479	42	glass	glass	NN
40119	479	43	window	window	NN
40119	479	44	in	in	IN
40119	479	45	one	one	CD
40119	479	46	side	side	NN
40119	479	47	.	.	.
40119	480	1	When	when	WRB
40119	480	2	the	the	DT
40119	480	3	window	window	NN
40119	480	4	is	be	VBZ
40119	480	5	covered	cover	VBN
40119	480	6	by	by	IN
40119	480	7	the	the	DT
40119	480	8	coloured	coloured	JJ
40119	480	9	glasses	glass	NNS
40119	480	10	its	-PRON-	PRP$
40119	480	11	outline	outline	NN
40119	480	12	can	can	MD
40119	480	13	not	not	RB
40119	480	14	be	be	VB
40119	480	15	clearly	clearly	RB
40119	480	16	distinguished	distinguish	VBN
40119	480	17	unless	unless	IN
40119	480	18	the	the	DT
40119	480	19	observer	observer	NN
40119	480	20	is	be	VBZ
40119	480	21	near	near	JJ
40119	480	22	,	,	,
40119	480	23	but	but	CC
40119	480	24	if	if	IN
40119	480	25	he	-PRON-	PRP
40119	480	26	uses	use	VBZ
40119	480	27	suitable	suitable	JJ
40119	480	28	concave	concave	NNP
40119	480	29	spectacles	spectacle	NNS
40119	480	30	,	,	,
40119	480	31	he	-PRON-	PRP
40119	480	32	will	will	MD
40119	480	33	be	be	VB
40119	480	34	able	able	JJ
40119	480	35	to	to	TO
40119	480	36	see	see	VB
40119	480	37	it	-PRON-	PRP
40119	480	38	quite	quite	RB
40119	480	39	distinctly	distinctly	RB
40119	480	40	,	,	,
40119	480	41	even	even	RB
40119	480	42	from	from	IN
40119	480	43	a	a	DT
40119	480	44	considerable	considerable	JJ
40119	480	45	distance	distance	NN
40119	480	46	.	.	.
40119	481	1	It	-PRON-	PRP
40119	481	2	is	be	VBZ
40119	481	3	well	well	RB
40119	481	4	known	know	VBN
40119	481	5	that	that	IN
40119	481	6	ideas	idea	NNS
40119	481	7	of	of	IN
40119	481	8	distance	distance	NN
40119	481	9	are	be	VBP
40119	481	10	associated	associate	VBN
40119	481	11	with	with	IN
40119	481	12	certain	certain	JJ
40119	481	13	colours	colour	NNS
40119	481	14	.	.	.
40119	482	1	A	a	DT
40119	482	2	room	room	NN
40119	482	3	gives	give	VBZ
40119	482	4	one	one	PRP
40119	482	5	the	the	DT
40119	482	6	impression	impression	NN
40119	482	7	of	of	IN
40119	482	8	being	be	VBG
40119	482	9	larger	large	JJR
40119	482	10	when	when	WRB
40119	482	11	it	-PRON-	PRP
40119	482	12	is	be	VBZ
40119	482	13	papered	paper	VBN
40119	482	14	or	or	CC
40119	482	15	painted	paint	VBN
40119	482	16	a	a	DT
40119	482	17	blue	blue	JJ
40119	482	18	-	-	HYPH
40119	482	19	violet	violet	NN
40119	482	20	colour	colour	NN
40119	482	21	than	than	IN
40119	482	22	when	when	WRB
40119	482	23	its	-PRON-	PRP$
40119	482	24	colouring	colouring	NN
40119	482	25	is	be	VBZ
40119	482	26	red	red	JJ
40119	482	27	.	.	.
40119	483	1	In	in	IN
40119	483	2	the	the	DT
40119	483	3	former	former	JJ
40119	483	4	case	case	NN
40119	483	5	the	the	DT
40119	483	6	walls	wall	NNS
40119	483	7	seem	seem	VBP
40119	483	8	to	to	TO
40119	483	9	retire	retire	VB
40119	483	10	from	from	IN
40119	483	11	the	the	DT
40119	483	12	spectator	spectator	NN
40119	483	13	,	,	,
40119	483	14	in	in	IN
40119	483	15	the	the	DT
40119	483	16	latter	latter	JJ
40119	483	17	to	to	TO
40119	483	18	approach	approach	VB
40119	483	19	him	-PRON-	PRP
40119	483	20	.	.	.
40119	484	1	So	so	RB
40119	484	2	too	too	RB
40119	484	3	a	a	DT
40119	484	4	red	red	JJ
40119	484	5	spot	spot	NN
40119	484	6	upon	upon	IN
40119	484	7	a	a	DT
40119	484	8	violet	violet	NN
40119	484	9	ground	ground	NN
40119	484	10	appears	appear	VBZ
40119	484	11	to	to	TO
40119	484	12	be	be	VB
40119	484	13	distinctly	distinctly	RB
40119	484	14	raised	raise	VBN
40119	484	15	above	above	IN
40119	484	16	the	the	DT
40119	484	17	surface	surface	NN
40119	484	18	,	,	,
40119	484	19	while	while	IN
40119	484	20	a	a	DT
40119	484	21	violet	violet	NN
40119	484	22	spot	spot	NN
40119	484	23	upon	upon	IN
40119	484	24	a	a	DT
40119	484	25	red	red	JJ
40119	484	26	ground	ground	NN
40119	484	27	appears	appear	VBZ
40119	484	28	to	to	TO
40119	484	29	be	be	VB
40119	484	30	depressed	depressed	JJ
40119	484	31	.	.	.
40119	485	1	These	these	DT
40119	485	2	phenomena	phenomenon	NNS
40119	485	3	are	be	VBP
40119	485	4	fully	fully	RB
40119	485	5	explained	explain	VBN
40119	485	6	by	by	IN
40119	485	7	the	the	DT
40119	485	8	imperfect	imperfect	JJ
40119	485	9	achromatism	achromatism	NN
40119	485	10	of	of	IN
40119	485	11	the	the	DT
40119	485	12	eye	eye	NN
40119	485	13	.	.	.
40119	486	1	When	when	WRB
40119	486	2	we	-PRON-	PRP
40119	486	3	look	look	VBP
40119	486	4	at	at	IN
40119	486	5	a	a	DT
40119	486	6	red	red	JJ
40119	486	7	object	object	NN
40119	486	8	,	,	,
40119	486	9	we	-PRON-	PRP
40119	486	10	have	have	VBP
40119	486	11	to	to	TO
40119	486	12	adjust	adjust	VB
40119	486	13	the	the	DT
40119	486	14	crystalline	crystalline	JJ
40119	486	15	lens	lens	NN
40119	486	16	by	by	IN
40119	486	17	means	mean	NNS
40119	486	18	of	of	IN
40119	486	19	the	the	DT
40119	486	20	ciliary	ciliary	JJ
40119	486	21	muscle	muscle	NN
40119	486	22	in	in	IN
40119	486	23	exactly	exactly	RB
40119	486	24	the	the	DT
40119	486	25	same	same	JJ
40119	486	26	way	way	NN
40119	486	27	as	as	IN
40119	486	28	when	when	WRB
40119	486	29	we	-PRON-	PRP
40119	486	30	look	look	VBP
40119	486	31	at	at	IN
40119	486	32	a	a	DT
40119	486	33	near	near	JJ
40119	486	34	object	object	NN
40119	486	35	;	;	:
40119	486	36	in	in	IN
40119	486	37	both	both	DT
40119	486	38	cases	case	NNS
40119	486	39	it	-PRON-	PRP
40119	486	40	is	be	VBZ
40119	486	41	necessary	necessary	JJ
40119	486	42	to	to	TO
40119	486	43	increase	increase	VB
40119	486	44	the	the	DT
40119	486	45	convexity	convexity	NN
40119	486	46	of	of	IN
40119	486	47	the	the	DT
40119	486	48	lens	lens	NN
40119	486	49	,	,	,
40119	486	50	and	and	CC
40119	486	51	so	so	RB
40119	486	52	diminish	diminish	VB
40119	486	53	its	-PRON-	PRP$
40119	486	54	focal	focal	JJ
40119	486	55	length	length	NN
40119	486	56	,	,	,
40119	486	57	in	in	IN
40119	486	58	order	order	NN
40119	486	59	to	to	TO
40119	486	60	obtain	obtain	VB
40119	486	61	a	a	DT
40119	486	62	clear	clear	JJ
40119	486	63	image	image	NN
40119	486	64	upon	upon	IN
40119	486	65	the	the	DT
40119	486	66	retina	retina	NNP
40119	486	67	.	.	.
40119	487	1	And	and	CC
40119	487	2	again	again	RB
40119	487	3	,	,	,
40119	487	4	when	when	WRB
40119	487	5	we	-PRON-	PRP
40119	487	6	wish	wish	VBP
40119	487	7	to	to	TO
40119	487	8	see	see	VB
40119	487	9	a	a	DT
40119	487	10	blue	blue	JJ
40119	487	11	or	or	CC
40119	487	12	violet	violet	NN
40119	487	13	thing	thing	NN
40119	487	14	distinctly	distinctly	RB
40119	487	15	,	,	,
40119	487	16	the	the	DT
40119	487	17	ciliary	ciliary	JJ
40119	487	18	muscle	muscle	NN
40119	487	19	must	must	MD
40119	487	20	be	be	VB
40119	487	21	relaxed	relax	VBN
40119	487	22	and	and	CC
40119	487	23	the	the	DT
40119	487	24	convexity	convexity	NN
40119	487	25	of	of	IN
40119	487	26	the	the	DT
40119	487	27	lens	lens	NN
40119	487	28	as	as	RB
40119	487	29	far	far	RB
40119	487	30	as	as	IN
40119	487	31	possible	possible	JJ
40119	487	32	diminished	diminished	JJ
40119	487	33	,	,	,
40119	487	34	just	just	RB
40119	487	35	as	as	IN
40119	487	36	if	if	IN
40119	487	37	the	the	DT
40119	487	38	gaze	gaze	NN
40119	487	39	were	be	VBD
40119	487	40	directed	direct	VBN
40119	487	41	to	to	IN
40119	487	42	the	the	DT
40119	487	43	horizon	horizon	NN
40119	487	44	.	.	.
40119	488	1	We	-PRON-	PRP
40119	488	2	are	be	VBP
40119	488	3	accustomed	accustomed	JJ
40119	488	4	to	to	TO
40119	488	5	estimate	estimate	VB
40119	488	6	the	the	DT
40119	488	7	distances	distance	NNS
40119	488	8	of	of	IN
40119	488	9	things	thing	NNS
40119	488	10	largely	largely	RB
40119	488	11	by	by	IN
40119	488	12	the	the	DT
40119	488	13	muscular	muscular	JJ
40119	488	14	effort	effort	NN
40119	488	15	required	require	VBN
40119	488	16	to	to	TO
40119	488	17	focus	focus	VB
40119	488	18	their	-PRON-	PRP$
40119	488	19	images	image	NNS
40119	488	20	,	,	,
40119	488	21	and	and	CC
40119	488	22	thus	thus	RB
40119	488	23	it	-PRON-	PRP
40119	488	24	happens	happen	VBZ
40119	488	25	that	that	IN
40119	488	26	the	the	DT
40119	488	27	colour	colour	NN
40119	488	28	red	red	NN
40119	488	29	comes	come	VBZ
40119	488	30	to	to	TO
40119	488	31	be	be	VB
40119	488	32	associated	associate	VBN
40119	488	33	in	in	IN
40119	488	34	our	-PRON-	PRP$
40119	488	35	minds	mind	NNS
40119	488	36	with	with	IN
40119	488	37	nearness	nearness	JJ
40119	488	38	,	,	,
40119	488	39	and	and	CC
40119	488	40	violet	violet	NN
40119	488	41	with	with	IN
40119	488	42	remoteness	remoteness	NN
40119	488	43	.	.	.
40119	489	1	These	these	DT
40119	489	2	psychological	psychological	JJ
40119	489	3	effects	effect	NNS
40119	489	4	are	be	VBP
40119	489	5	perfectly	perfectly	RB
40119	489	6	well	well	RB
40119	489	7	marked	mark	VBN
40119	489	8	even	even	RB
40119	489	9	with	with	IN
40119	489	10	the	the	DT
40119	489	11	impure	impure	NN
40119	489	12	colours	colour	NNS
40119	489	13	met	meet	VBD
40119	489	14	with	with	IN
40119	489	15	in	in	IN
40119	489	16	ordinary	ordinary	JJ
40119	489	17	life	life	NN
40119	489	18	,	,	,
40119	489	19	but	but	CC
40119	489	20	they	-PRON-	PRP
40119	489	21	are	be	VBP
40119	489	22	naturally	naturally	RB
40119	489	23	more	more	RBR
40119	489	24	evident	evident	JJ
40119	489	25	when	when	WRB
40119	489	26	the	the	DT
40119	489	27	colours	colour	NNS
40119	489	28	observed	observe	VBN
40119	489	29	are	be	VBP
40119	489	30	pure	pure	JJ
40119	489	31	,	,	,
40119	489	32	like	like	IN
40119	489	33	those	those	DT
40119	489	34	of	of	IN
40119	489	35	the	the	DT
40119	489	36	spectrum	spectrum	NN
40119	489	37	.	.	.
40119	490	1	A	a	DT
40119	490	2	beautiful	beautiful	JJ
40119	490	3	example	example	NN
40119	490	4	is	be	VBZ
40119	490	5	that	that	IN
40119	490	6	presented	present	VBN
40119	490	7	by	by	IN
40119	490	8	the	the	DT
40119	490	9	pair	pair	NN
40119	490	10	of	of	IN
40119	490	11	short	short	JJ
40119	490	12	bright	bright	JJ
40119	490	13	spectra	spectra	NN
40119	490	14	formed	form	VBN
40119	490	15	upon	upon	IN
40119	490	16	the	the	DT
40119	490	17	screen	screen	NN
40119	490	18	when	when	WRB
40119	490	19	a	a	DT
40119	490	20	double	double	JJ
40119	490	21	slit	slit	NN
40119	490	22	is	be	VBZ
40119	490	23	used	use	VBN
40119	490	24	shaped	shape	VBN
40119	490	25	like	like	IN
40119	490	26	the	the	DT
40119	490	27	letter	letter	NN
40119	490	28	V.	V.	NNP
40119	490	29	The	the	DT
40119	490	30	gorgeously	gorgeously	RB
40119	490	31	coloured	colour	VBN
40119	490	32	V	v	NN
40119	490	33	seems	seem	VBZ
40119	490	34	to	to	TO
40119	490	35	stand	stand	VB
40119	490	36	out	out	RP
40119	490	37	in	in	IN
40119	490	38	strong	strong	JJ
40119	490	39	relief	relief	NN
40119	490	40	like	like	IN
40119	490	41	a	a	DT
40119	490	42	pair	pair	NN
40119	490	43	of	of	IN
40119	490	44	inclined	inclined	JJ
40119	490	45	boards	board	NNS
40119	490	46	,	,	,
40119	490	47	the	the	DT
40119	490	48	nearer	nearer	NN
40119	490	49	edges	edge	VBZ
40119	490	50	being	be	VBG
40119	490	51	red	red	JJ
40119	490	52	,	,	,
40119	490	53	the	the	DT
40119	490	54	farther	farther	JJ
40119	490	55	ones	one	VBZ
40119	490	56	violet	violet	NN
40119	490	57	.	.	.
40119	491	1	(	(	-LRB-
40119	491	2	See	see	VB
40119	491	3	Fig	fig	NN
40119	491	4	.	.	.
40119	492	1	14	14	CD
40119	492	2	.	.	.
40119	492	3	)	)	-RRB-
40119	493	1	[	[	-LRB-
40119	493	2	Illustration	illustration	NN
40119	493	3	:	:	:
40119	493	4	_	_	NNP
40119	493	5	Fig	Fig	NNP
40119	493	6	.	.	.
40119	494	1	14.--Spectrum	14.--spectrum	CD
40119	494	2	formed	form	VBN
40119	494	3	with	with	IN
40119	494	4	V	V	NNP
40119	494	5	-	-	HYPH
40119	494	6	shaped	shaped	JJ
40119	494	7	Slit	Slit	NNP
40119	494	8	.	.	.
40119	494	9	_	_	NNP
40119	494	10	]	]	-RRB-
40119	494	11	In	in	IN
40119	494	12	many	many	JJ
40119	494	13	other	other	JJ
40119	494	14	ways	way	NNS
40119	494	15	,	,	,
40119	494	16	and	and	CC
40119	494	17	with	with	IN
40119	494	18	little	little	JJ
40119	494	19	or	or	CC
40119	494	20	no	no	DT
40119	494	21	apparatus	apparatus	NN
40119	494	22	,	,	,
40119	494	23	any	any	DT
40119	494	24	one	one	NN
40119	494	25	may	may	MD
40119	494	26	easily	easily	RB
40119	494	27	convince	convince	VB
40119	494	28	himself	-PRON-	PRP
40119	494	29	that	that	IN
40119	494	30	the	the	DT
40119	494	31	different	different	JJ
40119	494	32	constituents	constituent	NNS
40119	494	33	of	of	IN
40119	494	34	white	white	JJ
40119	494	35	light	light	NN
40119	494	36	are	be	VBP
40119	494	37	not	not	RB
40119	494	38	equally	equally	RB
40119	494	39	refracted	refract	VBN
40119	494	40	by	by	IN
40119	494	41	the	the	DT
40119	494	42	lenses	lense	NNS
40119	494	43	of	of	IN
40119	494	44	the	the	DT
40119	494	45	eye	eye	NN
40119	494	46	.	.	.
40119	495	1	Look	look	VB
40119	495	2	,	,	,
40119	495	3	for	for	IN
40119	495	4	instance	instance	NN
40119	495	5	,	,	,
40119	495	6	at	at	IN
40119	495	7	the	the	DT
40119	495	8	incandescent	incandescent	JJ
40119	495	9	filament	filament	NN
40119	495	10	of	of	IN
40119	495	11	an	an	DT
40119	495	12	electric	electric	JJ
40119	495	13	lamp	lamp	NN
40119	495	14	through	through	IN
40119	495	15	a	a	DT
40119	495	16	piece[7	piece[7	NNP
40119	495	17	]	]	-RRB-
40119	495	18	of	of	IN
40119	495	19	common	common	JJ
40119	495	20	dark	dark	JJ
40119	495	21	blue	blue	JJ
40119	495	22	cobalt	cobalt	NN
40119	495	23	glass	glass	NN
40119	495	24	,	,	,
40119	495	25	which	which	WDT
40119	495	26	has	have	VBZ
40119	495	27	the	the	DT
40119	495	28	property	property	NN
40119	495	29	of	of	IN
40119	495	30	obstructing	obstruct	VBG
40119	495	31	the	the	DT
40119	495	32	coloured	coloured	JJ
40119	495	33	rays	ray	NNS
40119	495	34	corresponding	correspond	VBG
40119	495	35	to	to	IN
40119	495	36	the	the	DT
40119	495	37	middle	middle	NN
40119	495	38	of	of	IN
40119	495	39	the	the	DT
40119	495	40	spectrum	spectrum	NN
40119	495	41	,	,	,
40119	495	42	while	while	IN
40119	495	43	transmitting	transmit	VBG
40119	495	44	the	the	DT
40119	495	45	red	red	NN
40119	495	46	and	and	CC
40119	495	47	the	the	DT
40119	495	48	blue	blue	NN
40119	495	49	.	.	.
40119	496	1	Seen	see	VBN
40119	496	2	from	from	IN
40119	496	3	a	a	DT
40119	496	4	distance	distance	NN
40119	496	5	of	of	IN
40119	496	6	only	only	RB
40119	496	7	a	a	DT
40119	496	8	few	few	JJ
40119	496	9	inches	inch	NNS
40119	496	10	,	,	,
40119	496	11	the	the	DT
40119	496	12	filament	filament	NN
40119	496	13	appears	appear	VBZ
40119	496	14	to	to	TO
40119	496	15	be	be	VB
40119	496	16	pale	pale	JJ
40119	496	17	blue	blue	JJ
40119	496	18	with	with	IN
40119	496	19	a	a	DT
40119	496	20	bright	bright	JJ
40119	496	21	red	red	JJ
40119	496	22	border	border	NN
40119	496	23	,	,	,
40119	496	24	the	the	DT
40119	496	25	blue	blue	JJ
40119	496	26	rays	ray	NNS
40119	496	27	being	be	VBG
40119	496	28	perfectly	perfectly	RB
40119	496	29	focussed	focusse	VBN
40119	496	30	,	,	,
40119	496	31	while	while	IN
40119	496	32	the	the	DT
40119	496	33	red	red	JJ
40119	496	34	form	form	NN
40119	496	35	diffusion	diffusion	NN
40119	496	36	circles	circle	NNS
40119	496	37	.	.	.
40119	497	1	Move	move	VB
40119	497	2	some	some	DT
40119	497	3	six	six	CD
40119	497	4	or	or	CC
40119	497	5	eight	eight	CD
40119	497	6	feet	foot	NNS
40119	497	7	away	away	RB
40119	497	8	and	and	CC
40119	497	9	look	look	VB
40119	497	10	again	again	RB
40119	497	11	;	;	:
40119	497	12	the	the	DT
40119	497	13	colours	colour	NNS
40119	497	14	will	will	MD
40119	497	15	now	now	RB
40119	497	16	be	be	VB
40119	497	17	reversed	reverse	VBN
40119	497	18	,	,	,
40119	497	19	the	the	DT
40119	497	20	filament	filament	NN
40119	497	21	appearing	appear	VBG
40119	497	22	red	red	NN
40119	497	23	and	and	CC
40119	497	24	the	the	DT
40119	497	25	border	border	NN
40119	497	26	blue	blue	JJ
40119	497	27	-	-	HYPH
40119	497	28	violet	violet	NN
40119	497	29	.	.	.
40119	498	1	From	from	IN
40119	498	2	a	a	DT
40119	498	3	still	still	RB
40119	498	4	greater	great	JJR
40119	498	5	distance	distance	NN
40119	498	6	--	--	:
40119	498	7	about	about	RB
40119	498	8	fifteen	fifteen	CD
40119	498	9	or	or	CC
40119	498	10	twenty	twenty	CD
40119	498	11	feet	foot	NNS
40119	498	12	--	--	:
40119	498	13	the	the	DT
40119	498	14	whole	whole	JJ
40119	498	15	lamp	lamp	NN
40119	498	16	-	-	HYPH
40119	498	17	bulb	bulb	NN
40119	498	18	will	will	MD
40119	498	19	seem	seem	VB
40119	498	20	to	to	TO
40119	498	21	be	be	VB
40119	498	22	filled	fill	VBN
40119	498	23	with	with	IN
40119	498	24	a	a	DT
40119	498	25	blue	blue	JJ
40119	498	26	-	-	HYPH
40119	498	27	violet	violet	NN
40119	498	28	glow	glow	NN
40119	498	29	,	,	,
40119	498	30	due	due	IN
40119	498	31	to	to	IN
40119	498	32	large	large	JJ
40119	498	33	diffusion	diffusion	NN
40119	498	34	circles	circle	NNS
40119	498	35	,	,	,
40119	498	36	while	while	IN
40119	498	37	the	the	DT
40119	498	38	red	red	JJ
40119	498	39	image	image	NN
40119	498	40	of	of	IN
40119	498	41	the	the	DT
40119	498	42	filament	filament	NN
40119	498	43	may	may	MD
40119	498	44	be	be	VB
40119	498	45	even	even	RB
40119	498	46	more	more	RBR
40119	498	47	clearly	clearly	RB
40119	498	48	defined	define	VBN
40119	498	49	than	than	IN
40119	498	50	before	before	RB
40119	498	51	.	.	.
40119	499	1	No	no	RB
40119	499	2	doubt	doubt	RB
40119	499	3	it	-PRON-	PRP
40119	499	4	is	be	VBZ
40119	499	5	partly	partly	RB
40119	499	6	owing	owe	VBG
40119	499	7	to	to	IN
40119	499	8	the	the	DT
40119	499	9	non	non	NN
40119	499	10	-	-	NN
40119	499	11	achromatism	achromatism	NN
40119	499	12	of	of	IN
40119	499	13	the	the	DT
40119	499	14	eye	eye	NN
40119	499	15	that	that	WDT
40119	499	16	distant	distant	JJ
40119	499	17	arc	arc	NN
40119	499	18	lights	light	NNS
40119	499	19	always	always	RB
40119	499	20	appear	appear	VBP
40119	499	21	to	to	TO
40119	499	22	have	have	VB
40119	499	23	a	a	DT
40119	499	24	yellowish	yellowish	JJ
40119	499	25	hue	hue	NN
40119	499	26	,	,	,
40119	499	27	even	even	RB
40119	499	28	when	when	WRB
40119	499	29	the	the	DT
40119	499	30	air	air	NN
40119	499	31	is	be	VBZ
40119	499	32	quite	quite	RB
40119	499	33	clear	clear	JJ
40119	499	34	;	;	:
40119	499	35	a	a	DT
40119	499	36	considerable	considerable	JJ
40119	499	37	proportion	proportion	NN
40119	499	38	of	of	IN
40119	499	39	their	-PRON-	PRP$
40119	499	40	blue	blue	JJ
40119	499	41	and	and	CC
40119	499	42	violet	violet	NN
40119	499	43	components	component	NNS
40119	499	44	must	must	MD
40119	499	45	necessarily	necessarily	RB
40119	499	46	be	be	VB
40119	499	47	lost	lose	VBN
40119	499	48	by	by	IN
40119	499	49	extensive	extensive	JJ
40119	499	50	diffusion	diffusion	NN
40119	499	51	.	.	.
40119	500	1	[	[	-LRB-
40119	500	2	8	8	CD
40119	500	3	]	]	-RRB-
40119	500	4	Again	again	RB
40119	500	5	,	,	,
40119	500	6	look	look	VB
40119	500	7	at	at	IN
40119	500	8	a	a	DT
40119	500	9	sunlit	sunlit	NN
40119	500	10	landscape	landscape	NN
40119	500	11	or	or	CC
40119	500	12	a	a	DT
40119	500	13	printed	print	VBN
40119	500	14	wall	wall	NN
40119	500	15	poster	poster	NN
40119	500	16	through	through	IN
40119	500	17	a	a	DT
40119	500	18	combination	combination	NN
40119	500	19	of	of	IN
40119	500	20	coloured	coloured	JJ
40119	500	21	glasses	glass	NNS
40119	500	22	which	which	WDT
40119	500	23	will	will	MD
40119	500	24	transmit	transmit	VB
40119	500	25	only	only	RB
40119	500	26	the	the	DT
40119	500	27	violet	violet	NN
40119	500	28	end	end	NN
40119	500	29	of	of	IN
40119	500	30	the	the	DT
40119	500	31	spectrum	spectrum	NN
40119	500	32	.	.	.
40119	501	1	You	-PRON-	PRP
40119	501	2	will	will	MD
40119	501	3	find	find	VB
40119	501	4	yourself	-PRON-	PRP
40119	501	5	for	for	IN
40119	501	6	the	the	DT
40119	501	7	time	time	NN
40119	501	8	terribly	terribly	RB
40119	501	9	short	short	JJ
40119	501	10	-	-	HYPH
40119	501	11	sighted	sighted	JJ
40119	501	12	,	,	,
40119	501	13	everything	everything	NN
40119	501	14	appearing	appear	VBG
40119	501	15	blurred	blurred	JJ
40119	501	16	and	and	CC
40119	501	17	indistinct	indistinct	JJ
40119	501	18	.	.	.
40119	502	1	But	but	CC
40119	502	2	if	if	IN
40119	502	3	you	-PRON-	PRP
40119	502	4	resort	resort	VBP
40119	502	5	to	to	IN
40119	502	6	the	the	DT
40119	502	7	usual	usual	JJ
40119	502	8	corrective	corrective	NN
40119	502	9	for	for	IN
40119	502	10	myopia	myopia	NN
40119	502	11	,	,	,
40119	502	12	and	and	CC
40119	502	13	put	put	VBD
40119	502	14	on	on	RP
40119	502	15	a	a	DT
40119	502	16	pair	pair	NN
40119	502	17	of	of	IN
40119	502	18	concave	concave	NNP
40119	502	19	spectacles	spectacle	NNS
40119	502	20	,	,	,
40119	502	21	your	-PRON-	PRP$
40119	502	22	normal	normal	JJ
40119	502	23	vision	vision	NN
40119	502	24	will	will	MD
40119	502	25	be	be	VB
40119	502	26	restored	restore	VBN
40119	502	27	;	;	:
40119	502	28	trees	tree	NNS
40119	502	29	and	and	CC
40119	502	30	houses	house	NNS
40119	502	31	will	will	MD
40119	502	32	be	be	VB
40119	502	33	seen	see	VBN
40119	502	34	as	as	RB
40119	502	35	clearly	clearly	RB
40119	502	36	as	as	IN
40119	502	37	the	the	DT
40119	502	38	feebleness	feebleness	NN
40119	502	39	of	of	IN
40119	502	40	the	the	DT
40119	502	41	light	light	NN
40119	502	42	transmitted	transmit	VBN
40119	502	43	by	by	IN
40119	502	44	the	the	DT
40119	502	45	coloured	colour	VBN
40119	502	46	glasses	glass	NNS
40119	502	47	will	will	MD
40119	502	48	permit	permit	VB
40119	502	49	,	,	,
40119	502	50	and	and	CC
40119	502	51	the	the	DT
40119	502	52	letters	letter	NNS
40119	502	53	of	of	IN
40119	502	54	the	the	DT
40119	502	55	poster	poster	NN
40119	502	56	will	will	MD
40119	502	57	become	become	VB
40119	502	58	easily	easily	RB
40119	502	59	legible	legible	JJ
40119	502	60	.	.	.
40119	503	1	Now	now	RB
40119	503	2	,	,	,
40119	503	3	of	of	IN
40119	503	4	course	course	NN
40119	503	5	,	,	,
40119	503	6	the	the	DT
40119	503	7	interposition	interposition	NN
40119	503	8	of	of	IN
40119	503	9	coloured	coloured	JJ
40119	503	10	glasses	glass	NNS
40119	503	11	does	do	VBZ
40119	503	12	not	not	RB
40119	503	13	actually	actually	RB
40119	503	14	give	give	VB
40119	503	15	rise	rise	NN
40119	503	16	to	to	IN
40119	503	17	these	these	DT
40119	503	18	blurred	blur	VBN
40119	503	19	images	image	NNS
40119	503	20	;	;	:
40119	503	21	it	-PRON-	PRP
40119	503	22	merely	merely	RB
40119	503	23	enables	enable	VBZ
40119	503	24	one	one	PRP
40119	503	25	to	to	TO
40119	503	26	detect	detect	VB
40119	503	27	their	-PRON-	PRP$
40119	503	28	existence	existence	NN
40119	503	29	.	.	.
40119	504	1	Under	under	IN
40119	504	2	ordinary	ordinary	JJ
40119	504	3	conditions	condition	NNS
40119	504	4	they	-PRON-	PRP
40119	504	5	always	always	RB
40119	504	6	accompany	accompany	VBP
40119	504	7	the	the	DT
40119	504	8	clearer	clear	JJR
40119	504	9	images	image	NNS
40119	504	10	produced	produce	VBN
40119	504	11	by	by	IN
40119	504	12	the	the	DT
40119	504	13	more	more	RBR
40119	504	14	luminous	luminous	JJ
40119	504	15	rays	ray	NNS
40119	504	16	,	,	,
40119	504	17	and	and	CC
40119	504	18	their	-PRON-	PRP$
40119	504	19	presence	presence	NN
40119	504	20	can	can	MD
40119	504	21	not	not	RB
40119	504	22	fail	fail	VB
40119	504	23	to	to	TO
40119	504	24	exert	exert	VB
40119	504	25	a	a	DT
40119	504	26	detrimental	detrimental	JJ
40119	504	27	effect	effect	NN
40119	504	28	upon	upon	IN
40119	504	29	the	the	DT
40119	504	30	general	general	JJ
40119	504	31	definition	definition	NN
40119	504	32	.	.	.
40119	505	1	Such	such	JJ
40119	505	2	blurs	blur	NNS
40119	505	3	must	must	MD
40119	505	4	at	at	IN
40119	505	5	least	least	JJS
40119	505	6	tend	tend	VB
40119	505	7	to	to	TO
40119	505	8	fog	fog	VB
40119	505	9	the	the	DT
40119	505	10	darker	dark	JJR
40119	505	11	portions	portion	NNS
40119	505	12	of	of	IN
40119	505	13	the	the	DT
40119	505	14	focussed	focussed	JJ
40119	505	15	picture	picture	NN
40119	505	16	,	,	,
40119	505	17	and	and	CC
40119	505	18	though	though	IN
40119	505	19	we	-PRON-	PRP
40119	505	20	are	be	VBP
40119	505	21	not	not	RB
40119	505	22	distinctly	distinctly	RB
40119	505	23	conscious	conscious	JJ
40119	505	24	of	of	IN
40119	505	25	their	-PRON-	PRP$
40119	505	26	existence	existence	NN
40119	505	27	,	,	,
40119	505	28	it	-PRON-	PRP
40119	505	29	is	be	VBZ
40119	505	30	certain	certain	JJ
40119	505	31	that	that	IN
40119	505	32	if	if	IN
40119	505	33	they	-PRON-	PRP
40119	505	34	were	be	VBD
40119	505	35	annulled	annul	VBN
40119	505	36	the	the	DT
40119	505	37	acuteness	acuteness	NN
40119	505	38	of	of	IN
40119	505	39	our	-PRON-	PRP$
40119	505	40	vision	vision	NN
40119	505	41	would	would	MD
40119	505	42	be	be	VB
40119	505	43	improved	improve	VBN
40119	505	44	.	.	.
40119	506	1	The	the	DT
40119	506	2	diffusion	diffusion	NN
40119	506	3	circles	circle	NNS
40119	506	4	produced	produce	VBN
40119	506	5	by	by	IN
40119	506	6	the	the	DT
40119	506	7	red	red	JJ
40119	506	8	rays	ray	NNS
40119	506	9	,	,	,
40119	506	10	when	when	WRB
40119	506	11	the	the	DT
40119	506	12	eye	eye	NN
40119	506	13	is	be	VBZ
40119	506	14	accommodated	accommodate	VBN
40119	506	15	(	(	-LRB-
40119	506	16	as	as	IN
40119	506	17	it	-PRON-	PRP
40119	506	18	commonly	commonly	RB
40119	506	19	is	be	VBZ
40119	506	20	)	)	-RRB-
40119	506	21	for	for	IN
40119	506	22	the	the	DT
40119	506	23	yellow	yellow	JJ
40119	506	24	and	and	CC
40119	506	25	green	green	JJ
40119	506	26	,	,	,
40119	506	27	are	be	VBP
40119	506	28	less	less	RBR
40119	506	29	conspicuous	conspicuous	JJ
40119	506	30	than	than	IN
40119	506	31	those	those	DT
40119	506	32	due	due	IN
40119	506	33	to	to	IN
40119	506	34	the	the	DT
40119	506	35	most	most	RBS
40119	506	36	refrangible	refrangible	JJ
40119	506	37	rays	ray	NNS
40119	506	38	.	.	.
40119	507	1	Yet	yet	CC
40119	507	2	I	-PRON-	PRP
40119	507	3	find	find	VBP
40119	507	4	it	-PRON-	PRP
40119	507	5	impossible	impossible	JJ
40119	507	6	to	to	TO
40119	507	7	focus	focus	VB
40119	507	8	a	a	DT
40119	507	9	red	red	JJ
40119	507	10	object	object	NN
40119	507	11	,	,	,
40119	507	12	such	such	JJ
40119	507	13	as	as	IN
40119	507	14	the	the	DT
40119	507	15	filament	filament	NN
40119	507	16	of	of	IN
40119	507	17	an	an	DT
40119	507	18	electric	electric	JJ
40119	507	19	lamp	lamp	NN
40119	507	20	screened	screen	VBN
40119	507	21	by	by	IN
40119	507	22	a	a	DT
40119	507	23	properly	properly	RB
40119	507	24	selected	select	VBN
40119	507	25	deep	deep	JJ
40119	507	26	red	red	JJ
40119	507	27	glass	glass	NN
40119	507	28	,	,	,
40119	507	29	when	when	WRB
40119	507	30	placed	place	VBN
40119	507	31	at	at	IN
40119	507	32	the	the	DT
40119	507	33	ordinary	ordinary	JJ
40119	507	34	distance	distance	NN
40119	507	35	of	of	IN
40119	507	36	distinct	distinct	JJ
40119	507	37	vision	vision	NN
40119	507	38	--	--	:
40119	507	39	some	some	DT
40119	507	40	nine	nine	CD
40119	507	41	or	or	CC
40119	507	42	ten	ten	CD
40119	507	43	inches	inch	NNS
40119	507	44	from	from	IN
40119	507	45	the	the	DT
40119	507	46	eye	eye	NN
40119	507	47	--	--	:
40119	507	48	without	without	IN
40119	507	49	the	the	DT
40119	507	50	aid	aid	NN
40119	507	51	of	of	IN
40119	507	52	a	a	DT
40119	507	53	convex	convex	NNP
40119	507	54	lens	lens	NN
40119	507	55	.	.	.
40119	508	1	In	in	IN
40119	508	2	this	this	DT
40119	508	3	case	case	NN
40119	508	4	one	one	CD
40119	508	5	is	be	VBZ
40119	508	6	not	not	RB
40119	508	7	too	too	RB
40119	508	8	short	short	JJ
40119	508	9	-	-	HYPH
40119	508	10	sighted	sighted	JJ
40119	508	11	but	but	CC
40119	508	12	too	too	RB
40119	508	13	long	long	RB
40119	508	14	-	-	HYPH
40119	508	15	sighted	sighted	JJ
40119	508	16	to	to	TO
40119	508	17	see	see	VB
40119	508	18	the	the	DT
40119	508	19	object	object	NN
40119	508	20	distinctly	distinctly	RB
40119	508	21	;	;	:
40119	508	22	in	in	IN
40119	508	23	other	other	JJ
40119	508	24	words	word	NNS
40119	508	25	,	,	,
40119	508	26	the	the	DT
40119	508	27	lenses	lense	NNS
40119	508	28	of	of	IN
40119	508	29	the	the	DT
40119	508	30	eye	eye	NN
40119	508	31	can	can	MD
40119	508	32	not	not	RB
40119	508	33	refract	refract	VB
40119	508	34	the	the	DT
40119	508	35	red	red	JJ
40119	508	36	rays	ray	NNS
40119	508	37	sufficiently	sufficiently	RB
40119	508	38	to	to	TO
40119	508	39	produce	produce	VB
40119	508	40	well	well	RB
40119	508	41	-	-	HYPH
40119	508	42	defined	define	VBN
40119	508	43	images	image	NNS
40119	508	44	upon	upon	IN
40119	508	45	the	the	DT
40119	508	46	retina	retina	NNP
40119	508	47	,	,	,
40119	508	48	and	and	CC
40119	508	49	the	the	DT
40119	508	50	refraction	refraction	NN
40119	508	51	has	have	VBZ
40119	508	52	to	to	TO
40119	508	53	be	be	VB
40119	508	54	increased	increase	VBN
40119	508	55	by	by	IN
40119	508	56	artificial	artificial	JJ
40119	508	57	means	mean	NNS
40119	508	58	.	.	.
40119	509	1	Though	though	RB
40119	509	2	,	,	,
40119	509	3	as	as	IN
40119	509	4	I	-PRON-	PRP
40119	509	5	have	have	VBP
40119	509	6	said	say	VBD
40119	509	7	,	,	,
40119	509	8	it	-PRON-	PRP
40119	509	9	is	be	VBZ
40119	509	10	difficult	difficult	JJ
40119	509	11	,	,	,
40119	509	12	or	or	CC
40119	509	13	even	even	RB
40119	509	14	impossible	impossible	JJ
40119	509	15	to	to	TO
40119	509	16	detect	detect	VB
40119	509	17	any	any	DT
40119	509	18	trace	trace	NN
40119	509	19	of	of	IN
40119	509	20	a	a	DT
40119	509	21	coloured	coloured	JJ
40119	509	22	border	border	NN
40119	509	23	when	when	WRB
40119	509	24	looking	look	VBG
40119	509	25	at	at	IN
40119	509	26	a	a	DT
40119	509	27	bright	bright	JJ
40119	509	28	object	object	NN
40119	509	29	for	for	IN
40119	509	30	which	which	WDT
40119	509	31	the	the	DT
40119	509	32	eye	eye	NN
40119	509	33	is	be	VBZ
40119	509	34	accommodated	accommodate	VBN
40119	509	35	,	,	,
40119	509	36	it	-PRON-	PRP
40119	509	37	is	be	VBZ
40119	509	38	quite	quite	RB
40119	509	39	easy	easy	JJ
40119	509	40	to	to	TO
40119	509	41	bring	bring	VB
40119	509	42	such	such	JJ
40119	509	43	borders	border	NNS
40119	509	44	into	into	IN
40119	509	45	prominence	prominence	NN
40119	509	46	if	if	IN
40119	509	47	the	the	DT
40119	509	48	object	object	NN
40119	509	49	is	be	VBZ
40119	509	50	at	at	IN
40119	509	51	a	a	DT
40119	509	52	distance	distance	NN
40119	509	53	a	a	DT
40119	509	54	little	little	RB
40119	509	55	too	too	RB
40119	509	56	great	great	JJ
40119	509	57	or	or	CC
40119	509	58	too	too	RB
40119	509	59	small	small	JJ
40119	509	60	for	for	IN
40119	509	61	distinct	distinct	JJ
40119	509	62	vision	vision	NN
40119	509	63	.	.	.
40119	510	1	A	a	DT
40119	510	2	very	very	RB
40119	510	3	remarkable	remarkable	JJ
40119	510	4	device	device	NN
40119	510	5	for	for	IN
40119	510	6	the	the	DT
40119	510	7	purpose	purpose	NN
40119	510	8	is	be	VBZ
40119	510	9	one	one	CD
40119	510	10	due	due	JJ
40119	510	11	to	to	IN
40119	510	12	von	von	NNP
40119	510	13	Bezold	Bezold	NNP
40119	510	14	.	.	.
40119	511	1	This	this	DT
40119	511	2	may	may	MD
40119	511	3	be	be	VB
40119	511	4	illustrated	illustrate	VBN
40119	511	5	by	by	IN
40119	511	6	using	use	VBG
40119	511	7	a	a	DT
40119	511	8	non	non	JJ
40119	511	9	-	-	JJ
40119	511	10	achromatic	achromatic	JJ
40119	511	11	glass	glass	NN
40119	511	12	lens	lens	NN
40119	511	13	,	,	,
40119	511	14	such	such	JJ
40119	511	15	as	as	IN
40119	511	16	a	a	DT
40119	511	17	common	common	JJ
40119	511	18	magnifying	magnifying	NN
40119	511	19	glass	glass	NN
40119	511	20	,	,	,
40119	511	21	to	to	TO
40119	511	22	project	project	VB
40119	511	23	a	a	DT
40119	511	24	transparency	transparency	NN
40119	511	25	or	or	CC
40119	511	26	lantern	lantern	NN
40119	511	27	-	-	HYPH
40119	511	28	slide	slide	NN
40119	511	29	upon	upon	IN
40119	511	30	which	which	WDT
40119	511	31	is	be	VBZ
40119	511	32	painted	paint	VBN
40119	511	33	a	a	DT
40119	511	34	target	target	NN
40119	511	35	-	-	HYPH
40119	511	36	like	like	JJ
40119	511	37	design	design	NN
40119	511	38	,	,	,
40119	511	39	consisting	consist	VBG
40119	511	40	of	of	IN
40119	511	41	a	a	DT
40119	511	42	series	series	NN
40119	511	43	of	of	IN
40119	511	44	circular	circular	JJ
40119	511	45	black	black	JJ
40119	511	46	bands	band	NNS
40119	511	47	surrounding	surround	VBG
40119	511	48	a	a	DT
40119	511	49	circular	circular	JJ
40119	511	50	black	black	JJ
40119	511	51	spot	spot	NN
40119	511	52	.	.	.
40119	512	1	[	[	-LRB-
40119	512	2	9	9	CD
40119	512	3	]	]	-RRB-
40119	512	4	(	(	-LRB-
40119	512	5	See	see	VB
40119	512	6	Fig	fig	NN
40119	512	7	.	.	.
40119	513	1	15	15	CD
40119	513	2	.	.	.
40119	513	3	)	)	-RRB-
40119	514	1	[	[	-LRB-
40119	514	2	Illustration	illustration	NN
40119	514	3	:	:	:
40119	514	4	_	_	NNP
40119	514	5	Fig	Fig	NNP
40119	514	6	.	.	.
40119	515	1	15.--Bezold	15.--Bezold	NNP
40119	515	2	's	's	POS
40119	515	3	Diagram	Diagram	NNP
40119	515	4	.	.	.
40119	515	5	_	_	NNP
40119	515	6	]	]	-RRB-
40119	515	7	Suppose	suppose	VB
40119	515	8	the	the	DT
40119	515	9	glass	glass	NN
40119	515	10	lens	lens	NN
40119	515	11	to	to	TO
40119	515	12	represent	represent	VB
40119	515	13	the	the	DT
40119	515	14	lenses	lense	NNS
40119	515	15	of	of	IN
40119	515	16	a	a	DT
40119	515	17	gigantic	gigantic	JJ
40119	515	18	eye	eye	NN
40119	515	19	(	(	-LRB-
40119	515	20	in	in	IN
40119	515	21	a	a	DT
40119	515	22	definite	definite	JJ
40119	515	23	condition	condition	NN
40119	515	24	of	of	IN
40119	515	25	accommodation	accommodation	NN
40119	515	26	)	)	-RRB-
40119	515	27	and	and	CC
40119	515	28	the	the	DT
40119	515	29	screen	screen	NN
40119	515	30	the	the	DT
40119	515	31	retina	retina	NNP
40119	515	32	.	.	.
40119	516	1	The	the	DT
40119	516	2	imaginary	imaginary	JJ
40119	516	3	eye	eye	NN
40119	516	4	is	be	VBZ
40119	516	5	looking	look	VBG
40119	516	6	at	at	IN
40119	516	7	the	the	DT
40119	516	8	design	design	NN
40119	516	9	on	on	IN
40119	516	10	the	the	DT
40119	516	11	lantern	lantern	NN
40119	516	12	-	-	HYPH
40119	516	13	slide	slide	NN
40119	516	14	,	,	,
40119	516	15	and	and	CC
40119	516	16	when	when	WRB
40119	516	17	this	this	DT
40119	516	18	is	be	VBZ
40119	516	19	at	at	IN
40119	516	20	the	the	DT
40119	516	21	distance	distance	NN
40119	516	22	of	of	IN
40119	516	23	most	most	JJS
40119	516	24	distinct	distinct	JJ
40119	516	25	vision	vision	NN
40119	516	26	a	a	DT
40119	516	27	fairly	fairly	RB
40119	516	28	well	well	RB
40119	516	29	defined	define	VBN
40119	516	30	image	image	NN
40119	516	31	of	of	IN
40119	516	32	the	the	DT
40119	516	33	target	target	NN
40119	516	34	is	be	VBZ
40119	516	35	formed	form	VBN
40119	516	36	upon	upon	IN
40119	516	37	the	the	DT
40119	516	38	retinal	retinal	JJ
40119	516	39	screen	screen	NN
40119	516	40	.	.	.
40119	517	1	Now	now	RB
40119	517	2	gradually	gradually	RB
40119	517	3	move	move	VB
40119	517	4	the	the	DT
40119	517	5	lantern	lantern	JJ
40119	517	6	slide	slide	NN
40119	517	7	towards	towards	IN
40119	517	8	the	the	DT
40119	517	9	lens	lens	NN
40119	517	10	(	(	-LRB-
40119	517	11	or	or	CC
40119	517	12	the	the	DT
40119	517	13	lens	lens	NN
40119	517	14	towards	towards	IN
40119	517	15	the	the	DT
40119	517	16	slide	slide	NN
40119	517	17	)	)	-RRB-
40119	517	18	,	,	,
40119	517	19	thus	thus	RB
40119	517	20	bringing	bring	VBG
40119	517	21	it	-PRON-	PRP
40119	517	22	too	too	RB
40119	517	23	near	near	RB
40119	517	24	for	for	IN
40119	517	25	distinct	distinct	JJ
40119	517	26	vision	vision	NN
40119	517	27	.	.	.
40119	518	1	This	this	DT
40119	518	2	has	have	VBZ
40119	518	3	the	the	DT
40119	518	4	effect	effect	NN
40119	518	5	of	of	IN
40119	518	6	enlarging	enlarge	VBG
40119	518	7	the	the	DT
40119	518	8	diffusion	diffusion	NN
40119	518	9	circles	circle	NNS
40119	518	10	formed	form	VBN
40119	518	11	by	by	IN
40119	518	12	the	the	DT
40119	518	13	less	less	JJR
40119	518	14	refrangible	refrangible	JJ
40119	518	15	rays	ray	NNS
40119	518	16	corresponding	correspond	VBG
40119	518	17	to	to	IN
40119	518	18	the	the	DT
40119	518	19	red	red	JJ
40119	518	20	end	end	NN
40119	518	21	of	of	IN
40119	518	22	the	the	DT
40119	518	23	spectrum	spectrum	NN
40119	518	24	,	,	,
40119	518	25	and	and	CC
40119	518	26	at	at	IN
40119	518	27	the	the	DT
40119	518	28	same	same	JJ
40119	518	29	time	time	NN
40119	518	30	of	of	IN
40119	518	31	diminishing	diminish	VBG
40119	518	32	those	those	DT
40119	518	33	formed	form	VBN
40119	518	34	by	by	IN
40119	518	35	the	the	DT
40119	518	36	more	more	JJR
40119	518	37	refrangible	refrangible	JJ
40119	518	38	rays	ray	NNS
40119	518	39	corresponding	correspond	VBG
40119	518	40	to	to	IN
40119	518	41	the	the	DT
40119	518	42	violet	violet	NN
40119	518	43	end	end	NN
40119	518	44	.	.	.
40119	519	1	The	the	DT
40119	519	2	first	first	JJ
40119	519	3	result	result	NN
40119	519	4	is	be	VBZ
40119	519	5	that	that	IN
40119	519	6	the	the	DT
40119	519	7	circular	circular	JJ
40119	519	8	dark	dark	JJ
40119	519	9	bands	band	NNS
40119	519	10	become	become	VBP
40119	519	11	reddish	reddish	JJ
40119	519	12	brown	brown	JJ
40119	519	13	,	,	,
40119	519	14	and	and	CC
40119	519	15	the	the	DT
40119	519	16	spaces	space	NNS
40119	519	17	between	between	IN
40119	519	18	them	-PRON-	PRP
40119	519	19	bluish	bluish	NNP
40119	519	20	.	.	.
40119	520	1	As	as	IN
40119	520	2	the	the	DT
40119	520	3	distance	distance	NN
40119	520	4	between	between	IN
40119	520	5	the	the	DT
40119	520	6	lens	lens	NN
40119	520	7	and	and	CC
40119	520	8	the	the	DT
40119	520	9	slide	slide	NN
40119	520	10	is	be	VBZ
40119	520	11	still	still	RB
40119	520	12	further	far	RBR
40119	520	13	diminished	diminish	VBN
40119	520	14	,	,	,
40119	520	15	the	the	DT
40119	520	16	tints	tint	NNS
40119	520	17	become	become	VBP
40119	520	18	more	more	RBR
40119	520	19	varied	varied	JJ
40119	520	20	and	and	CC
40119	520	21	brilliant	brilliant	JJ
40119	520	22	,	,	,
40119	520	23	until	until	IN
40119	520	24	at	at	IN
40119	520	25	last	last	JJ
40119	520	26	there	there	EX
40119	520	27	appears	appear	VBZ
40119	520	28	a	a	DT
40119	520	29	beautiful	beautiful	JJ
40119	520	30	series	series	NN
40119	520	31	of	of	IN
40119	520	32	coloured	coloured	JJ
40119	520	33	rings	ring	NNS
40119	520	34	around	around	IN
40119	520	35	a	a	DT
40119	520	36	bright	bright	JJ
40119	520	37	red	red	JJ
40119	520	38	central	central	JJ
40119	520	39	spot	spot	NN
40119	520	40	.	.	.
40119	521	1	These	these	DT
40119	521	2	effects	effect	NNS
40119	521	3	are	be	VBP
40119	521	4	not	not	RB
40119	521	5	produced	produce	VBN
40119	521	6	when	when	WRB
40119	521	7	the	the	DT
40119	521	8	lens	lens	NN
40119	521	9	employed	employ	VBN
40119	521	10	is	be	VBZ
40119	521	11	an	an	DT
40119	521	12	achromatic	achromatic	JJ
40119	521	13	one	one	NN
40119	521	14	;	;	:
40119	521	15	with	with	IN
40119	521	16	such	such	PDT
40119	521	17	a	a	DT
40119	521	18	lens	lens	NN
40119	521	19	the	the	DT
40119	521	20	diffusion	diffusion	NN
40119	521	21	circles	circle	NNS
40119	521	22	are	be	VBP
40119	521	23	all	all	RB
40119	521	24	enlarged	enlarge	VBN
40119	521	25	or	or	CC
40119	521	26	diminished	diminish	VBN
40119	521	27	together	together	RB
40119	521	28	,	,	,
40119	521	29	and	and	CC
40119	521	30	a	a	DT
40119	521	31	to	to	IN
40119	521	32	-	-	HYPH
40119	521	33	and	and	CC
40119	521	34	-	-	HYPH
40119	521	35	fro	fro	JJ
40119	521	36	movement	movement	NN
40119	521	37	of	of	IN
40119	521	38	the	the	DT
40119	521	39	lantern	lantern	JJ
40119	521	40	slide	slide	NN
40119	521	41	(	(	-LRB-
40119	521	42	or	or	CC
40119	521	43	of	of	IN
40119	521	44	the	the	DT
40119	521	45	lens	lens	NN
40119	521	46	)	)	-RRB-
40119	521	47	merely	merely	RB
40119	521	48	affects	affect	VBZ
40119	521	49	the	the	DT
40119	521	50	definition	definition	NN
40119	521	51	of	of	IN
40119	521	52	the	the	DT
40119	521	53	image	image	NN
40119	521	54	without	without	IN
40119	521	55	causing	cause	VBG
40119	521	56	any	any	DT
40119	521	57	perceptible	perceptible	JJ
40119	521	58	dispersion	dispersion	NN
40119	521	59	of	of	IN
40119	521	60	colour	colour	NN
40119	521	61	.	.	.
40119	522	1	Now	now	RB
40119	522	2	it	-PRON-	PRP
40119	522	3	is	be	VBZ
40119	522	4	noteworthy	noteworthy	JJ
40119	522	5	that	that	IN
40119	522	6	the	the	DT
40119	522	7	chromatic	chromatic	JJ
40119	522	8	phenomena	phenomenon	NNS
40119	522	9	exhibited	exhibit	VBN
40119	522	10	with	with	IN
40119	522	11	the	the	DT
40119	522	12	uncorrected	uncorrected	JJ
40119	522	13	glass	glass	NN
40119	522	14	lens	lens	NN
40119	522	15	are	be	VBP
40119	522	16	quite	quite	RB
40119	522	17	well	well	RB
40119	522	18	shown	show	VBN
40119	522	19	by	by	IN
40119	522	20	the	the	DT
40119	522	21	lenses	lense	NNS
40119	522	22	of	of	IN
40119	522	23	the	the	DT
40119	522	24	eye	eye	NN
40119	522	25	.	.	.
40119	523	1	It	-PRON-	PRP
40119	523	2	is	be	VBZ
40119	523	3	only	only	RB
40119	523	4	necessary	necessary	JJ
40119	523	5	to	to	TO
40119	523	6	hold	hold	VB
40119	523	7	the	the	DT
40119	523	8	lantern	lantern	NN
40119	523	9	-	-	HYPH
40119	523	10	slide	slide	NN
40119	523	11	before	before	IN
40119	523	12	a	a	DT
40119	523	13	bright	bright	JJ
40119	523	14	background	background	NN
40119	523	15	and	and	CC
40119	523	16	gradually	gradually	RB
40119	523	17	bring	bring	VB
40119	523	18	it	-PRON-	PRP
40119	523	19	so	so	RB
40119	523	20	close	close	RB
40119	523	21	to	to	IN
40119	523	22	the	the	DT
40119	523	23	eye	eye	NN
40119	523	24	that	that	IN
40119	523	25	the	the	DT
40119	523	26	design	design	NN
40119	523	27	can	can	MD
40119	523	28	not	not	RB
40119	523	29	be	be	VB
40119	523	30	seen	see	VBN
40119	523	31	distinctly	distinctly	RB
40119	523	32	.	.	.
40119	524	1	The	the	DT
40119	524	2	black	black	JJ
40119	524	3	bands	band	NNS
40119	524	4	will	will	MD
40119	524	5	then	then	RB
40119	524	6	appear	appear	VB
40119	524	7	to	to	TO
40119	524	8	turn	turn	VB
40119	524	9	brown	brown	RB
40119	524	10	,	,	,
40119	524	11	the	the	DT
40119	524	12	white	white	JJ
40119	524	13	ones	one	NNS
40119	524	14	blue	blue	JJ
40119	524	15	,	,	,
40119	524	16	and	and	CC
40119	524	17	the	the	DT
40119	524	18	central	central	JJ
40119	524	19	spot	spot	NN
40119	524	20	bright	bright	JJ
40119	524	21	red	red	JJ
40119	524	22	.	.	.
40119	525	1	The	the	DT
40119	525	2	printed	print	VBN
40119	525	3	diagram	diagram	NN
40119	525	4	(	(	-LRB-
40119	525	5	Fig	fig	NN
40119	525	6	.	.	.
40119	526	1	15	15	LS
40119	526	2	)	)	-RRB-
40119	526	3	will	will	MD
40119	526	4	itself	-PRON-	PRP
40119	526	5	show	show	VB
40119	526	6	the	the	DT
40119	526	7	colours	colour	NNS
40119	526	8	if	if	IN
40119	526	9	it	-PRON-	PRP
40119	526	10	is	be	VBZ
40119	526	11	held	hold	VBN
40119	526	12	at	at	IN
40119	526	13	a	a	DT
40119	526	14	distance	distance	NN
40119	526	15	of	of	IN
40119	526	16	four	four	CD
40119	526	17	to	to	TO
40119	526	18	five	five	CD
40119	526	19	inches	inch	NNS
40119	526	20	from	from	IN
40119	526	21	one	one	CD
40119	526	22	eye	eye	NN
40119	526	23	in	in	IN
40119	526	24	a	a	DT
40119	526	25	good	good	JJ
40119	526	26	light	light	NN
40119	526	27	.	.	.
40119	527	1	One	one	CD
40119	527	2	more	more	JJR
40119	527	3	experiment	experiment	NN
40119	527	4	may	may	MD
40119	527	5	be	be	VB
40119	527	6	referred	refer	VBN
40119	527	7	to	to	IN
40119	527	8	.	.	.
40119	528	1	Look	look	VB
40119	528	2	with	with	IN
40119	528	3	one	one	CD
40119	528	4	eye	eye	NN
40119	528	5	at	at	IN
40119	528	6	a	a	DT
40119	528	7	well	well	RB
40119	528	8	-	-	HYPH
40119	528	9	lighted	light	VBN
40119	528	10	page	page	NN
40119	528	11	of	of	IN
40119	528	12	print	print	NN
40119	528	13	,	,	,
40119	528	14	and	and	CC
40119	528	15	with	with	IN
40119	528	16	a	a	DT
40119	528	17	strip	strip	NN
40119	528	18	of	of	IN
40119	528	19	brown	brown	JJ
40119	528	20	paper	paper	NN
40119	528	21	,	,	,
40119	528	22	held	hold	VBD
40119	528	23	quite	quite	RB
40119	528	24	near	near	IN
40119	528	25	the	the	DT
40119	528	26	eye	eye	NN
40119	528	27	,	,	,
40119	528	28	cover	cover	VB
40119	528	29	about	about	IN
40119	528	30	half	half	PDT
40119	528	31	the	the	DT
40119	528	32	pupil	pupil	NN
40119	528	33	.	.	.
40119	529	1	The	the	DT
40119	529	2	black	black	JJ
40119	529	3	letters	letter	NNS
40119	529	4	will	will	MD
40119	529	5	now	now	RB
40119	529	6	appear	appear	VB
40119	529	7	to	to	TO
40119	529	8	be	be	VB
40119	529	9	bordered	border	VBN
40119	529	10	with	with	IN
40119	529	11	colour	colour	NN
40119	529	12	--	--	:
40119	529	13	blue	blue	JJ
40119	529	14	towards	towards	IN
40119	529	15	the	the	DT
40119	529	16	apparent	apparent	JJ
40119	529	17	edge	edge	NN
40119	529	18	of	of	IN
40119	529	19	the	the	DT
40119	529	20	brown	brown	JJ
40119	529	21	paper	paper	NN
40119	529	22	,	,	,
40119	529	23	orange	orange	NN
40119	529	24	on	on	IN
40119	529	25	the	the	DT
40119	529	26	opposite	opposite	JJ
40119	529	27	side	side	NN
40119	529	28	.	.	.
40119	530	1	If	if	IN
40119	530	2	the	the	DT
40119	530	3	letters	letter	NNS
40119	530	4	are	be	VBP
40119	530	5	white	white	JJ
40119	530	6	on	on	IN
40119	530	7	a	a	DT
40119	530	8	black	black	JJ
40119	530	9	ground	ground	NN
40119	530	10	,	,	,
40119	530	11	as	as	IN
40119	530	12	sometimes	sometimes	RB
40119	530	13	happens	happen	VBZ
40119	530	14	in	in	IN
40119	530	15	the	the	DT
40119	530	16	case	case	NN
40119	530	17	of	of	IN
40119	530	18	advertisements	advertisement	NNS
40119	530	19	,	,	,
40119	530	20	the	the	DT
40119	530	21	colours	colour	NNS
40119	530	22	will	will	MD
40119	530	23	be	be	VB
40119	530	24	interchanged	interchange	VBN
40119	530	25	.	.	.
40119	531	1	The	the	DT
40119	531	2	cause	cause	NN
40119	531	3	of	of	IN
40119	531	4	the	the	DT
40119	531	5	coloured	coloured	JJ
40119	531	6	borders	border	NNS
40119	531	7	will	will	MD
40119	531	8	be	be	VB
40119	531	9	readily	readily	RB
40119	531	10	understood	understand	VBN
40119	531	11	from	from	IN
40119	531	12	an	an	DT
40119	531	13	inspection	inspection	NN
40119	531	14	of	of	IN
40119	531	15	the	the	DT
40119	531	16	diagram	diagram	NN
40119	531	17	Fig	Fig	NNP
40119	531	18	.	.	.
40119	532	1	12	12	CD
40119	532	2	;	;	:
40119	532	3	but	but	CC
40119	532	4	it	-PRON-	PRP
40119	532	5	must	must	MD
40119	532	6	be	be	VB
40119	532	7	remembered	remember	VBN
40119	532	8	that	that	IN
40119	532	9	the	the	DT
40119	532	10	images	image	NNS
40119	532	11	on	on	IN
40119	532	12	the	the	DT
40119	532	13	retina	retina	NNP
40119	532	14	are	be	VBP
40119	532	15	inverted	invert	VBN
40119	532	16	.	.	.
40119	533	1	Thus	thus	RB
40119	533	2	it	-PRON-	PRP
40119	533	3	is	be	VBZ
40119	533	4	proved	prove	VBN
40119	533	5	beyond	beyond	IN
40119	533	6	all	all	DT
40119	533	7	question	question	NN
40119	533	8	that	that	IN
40119	533	9	the	the	DT
40119	533	10	lenses	lense	NNS
40119	533	11	of	of	IN
40119	533	12	the	the	DT
40119	533	13	eye	eye	NN
40119	533	14	do	do	VBP
40119	533	15	not	not	RB
40119	533	16	form	form	VB
40119	533	17	an	an	DT
40119	533	18	achromatic	achromatic	JJ
40119	533	19	combination	combination	NN
40119	533	20	.	.	.
40119	534	1	Another	another	DT
40119	534	2	peculiarity	peculiarity	NN
40119	534	3	by	by	IN
40119	534	4	which	which	WDT
40119	534	5	the	the	DT
40119	534	6	eye	eye	NN
40119	534	7	is	be	VBZ
40119	534	8	affected	affect	VBN
40119	534	9	,	,	,
40119	534	10	and	and	CC
40119	534	11	which	which	WDT
40119	534	12	does	do	VBZ
40119	534	13	not	not	RB
40119	534	14	occur	occur	VB
40119	534	15	in	in	IN
40119	534	16	optical	optical	JJ
40119	534	17	instruments	instrument	NNS
40119	534	18	,	,	,
40119	534	19	is	be	VBZ
40119	534	20	that	that	DT
40119	534	21	known	know	VBN
40119	534	22	as	as	IN
40119	534	23	_	_	NNP
40119	534	24	astigmatism	astigmatism	NN
40119	534	25	_	_	NNP
40119	534	26	.	.	.
40119	535	1	The	the	DT
40119	535	2	surface	surface	NN
40119	535	3	of	of	IN
40119	535	4	the	the	DT
40119	535	5	cornea	cornea	NN
40119	535	6	,	,	,
40119	535	7	which	which	WDT
40119	535	8	,	,	,
40119	535	9	with	with	IN
40119	535	10	the	the	DT
40119	535	11	aqueous	aqueous	JJ
40119	535	12	humour	humour	NN
40119	535	13	,	,	,
40119	535	14	forms	form	VBZ
40119	535	15	the	the	DT
40119	535	16	outer	outer	JJ
40119	535	17	lens	lens	NN
40119	535	18	,	,	,
40119	535	19	is	be	VBZ
40119	535	20	not	not	RB
40119	535	21	often	often	RB
40119	535	22	perfectly	perfectly	RB
40119	535	23	spherical	spherical	JJ
40119	535	24	;	;	:
40119	535	25	generally	generally	RB
40119	535	26	it	-PRON-	PRP
40119	535	27	is	be	VBZ
40119	535	28	shaped	shape	VBN
40119	535	29	something	something	NN
40119	535	30	like	like	IN
40119	535	31	the	the	DT
40119	535	32	bowl	bowl	NN
40119	535	33	of	of	IN
40119	535	34	a	a	DT
40119	535	35	spoon	spoon	NN
40119	535	36	,	,	,
40119	535	37	the	the	DT
40119	535	38	curvature	curvature	NN
40119	535	39	being	be	VBG
40119	535	40	greater	greater	RBR
40119	535	41	vertically	vertically	RB
40119	535	42	than	than	IN
40119	535	43	horizontally	horizontally	RB
40119	535	44	.	.	.
40119	536	1	Rays	ray	NNS
40119	536	2	issuing	issue	VBG
40119	536	3	from	from	IN
40119	536	4	a	a	DT
40119	536	5	luminous	luminous	JJ
40119	536	6	point	point	NN
40119	536	7	do	do	VBP
40119	536	8	not	not	RB
40119	536	9	,	,	,
40119	536	10	after	after	IN
40119	536	11	refraction	refraction	NN
40119	536	12	by	by	IN
40119	536	13	such	such	PDT
40119	536	14	a	a	DT
40119	536	15	lens	lens	NN
40119	536	16	,	,	,
40119	536	17	cross	cross	NN
40119	536	18	at	at	IN
40119	536	19	a	a	DT
40119	536	20	single	single	JJ
40119	536	21	focus	focus	NN
40119	536	22	,	,	,
40119	536	23	but	but	CC
40119	536	24	along	along	IN
40119	536	25	two	two	CD
40119	536	26	short	short	JJ
40119	536	27	straight	straight	JJ
40119	536	28	lines	line	NNS
40119	536	29	,	,	,
40119	536	30	the	the	DT
40119	536	31	one	one	CD
40119	536	32	horizontal	horizontal	NN
40119	536	33	the	the	DT
40119	536	34	other	other	JJ
40119	536	35	vertical	vertical	JJ
40119	536	36	,	,	,
40119	536	37	which	which	WDT
40119	536	38	are	be	VBP
40119	536	39	at	at	IN
40119	536	40	different	different	JJ
40119	536	41	distances	distance	NNS
40119	536	42	from	from	IN
40119	536	43	the	the	DT
40119	536	44	lens	lens	NN
40119	536	45	;	;	:
40119	536	46	thus	thus	RB
40119	536	47	a	a	DT
40119	536	48	distinct	distinct	JJ
40119	536	49	image	image	NN
40119	536	50	of	of	IN
40119	536	51	a	a	DT
40119	536	52	small	small	JJ
40119	536	53	point	point	NN
40119	536	54	can	can	MD
40119	536	55	not	not	RB
40119	536	56	anywhere	anywhere	RB
40119	536	57	be	be	VB
40119	536	58	produced	produce	VBN
40119	536	59	.	.	.
40119	537	1	[	[	-LRB-
40119	537	2	Illustration	illustration	NN
40119	537	3	:	:	:
40119	537	4	_	_	NNP
40119	537	5	Fig	Fig	NNP
40119	537	6	.	.	.
40119	538	1	16.--Effect	16.--effect	CD
40119	538	2	of	of	IN
40119	538	3	Astigmatism	Astigmatism	NNP
40119	538	4	.	.	.
40119	538	5	_	_	NNP
40119	538	6	]	]	-RRB-
40119	538	7	A	a	DT
40119	538	8	very	very	RB
40119	538	9	curious	curious	JJ
40119	538	10	result	result	NN
40119	538	11	follows	follow	VBZ
40119	538	12	from	from	IN
40119	538	13	this	this	DT
40119	538	14	deformity	deformity	NN
40119	538	15	.	.	.
40119	539	1	If	if	IN
40119	539	2	two	two	CD
40119	539	3	straight	straight	JJ
40119	539	4	lines	line	NNS
40119	539	5	are	be	VBP
40119	539	6	drawn	draw	VBN
40119	539	7	at	at	IN
40119	539	8	right	right	JJ
40119	539	9	angles	angle	NNS
40119	539	10	to	to	IN
40119	539	11	each	each	DT
40119	539	12	other	other	JJ
40119	539	13	,	,	,
40119	539	14	as	as	IN
40119	539	15	in	in	IN
40119	539	16	Fig	Fig	NNP
40119	539	17	.	.	.
40119	540	1	16	16	CD
40119	540	2	,	,	,
40119	540	3	it	-PRON-	PRP
40119	540	4	is	be	VBZ
40119	540	5	impossible	impossible	JJ
40119	540	6	to	to	TO
40119	540	7	see	see	VB
40119	540	8	both	both	DT
40119	540	9	of	of	IN
40119	540	10	them	-PRON-	PRP
40119	540	11	quite	quite	RB
40119	540	12	clearly	clearly	RB
40119	540	13	at	at	IN
40119	540	14	the	the	DT
40119	540	15	same	same	JJ
40119	540	16	time	time	NN
40119	540	17	.	.	.
40119	541	1	When	when	WRB
40119	541	2	the	the	DT
40119	541	3	paper	paper	NN
40119	541	4	is	be	VBZ
40119	541	5	held	hold	VBN
40119	541	6	at	at	IN
40119	541	7	a	a	DT
40119	541	8	certain	certain	JJ
40119	541	9	short	short	JJ
40119	541	10	distance	distance	NN
40119	541	11	from	from	IN
40119	541	12	the	the	DT
40119	541	13	eye	eye	NN
40119	541	14	--	--	:
40119	541	15	about	about	RB
40119	541	16	eight	eight	CD
40119	541	17	or	or	CC
40119	541	18	nine	nine	CD
40119	541	19	inches	inch	NNS
40119	541	20	--	--	:
40119	541	21	the	the	DT
40119	541	22	horizontal	horizontal	JJ
40119	541	23	line	line	NN
40119	541	24	appears	appear	VBZ
40119	541	25	black	black	JJ
40119	541	26	and	and	CC
40119	541	27	well	well	RB
40119	541	28	defined	define	VBN
40119	541	29	,	,	,
40119	541	30	while	while	IN
40119	541	31	the	the	DT
40119	541	32	other	other	JJ
40119	541	33	is	be	VBZ
40119	541	34	rather	rather	RB
40119	541	35	grey	grey	JJ
40119	541	36	and	and	CC
40119	541	37	indistinct	indistinct	NNP
40119	541	38	;	;	:
40119	541	39	at	at	IN
40119	541	40	a	a	DT
40119	541	41	greater	great	JJR
40119	541	42	distance	distance	NN
40119	541	43	the	the	DT
40119	541	44	upright	upright	JJ
40119	541	45	line	line	NN
40119	541	46	seems	seem	VBZ
40119	541	47	to	to	TO
40119	541	48	be	be	VB
40119	541	49	the	the	DT
40119	541	50	blacker	blacker	NN
40119	541	51	.	.	.
40119	542	1	The	the	DT
40119	542	2	effect	effect	NN
40119	542	3	is	be	VBZ
40119	542	4	very	very	RB
40119	542	5	well	well	RB
40119	542	6	shown	show	VBN
40119	542	7	by	by	IN
40119	542	8	the	the	DT
40119	542	9	diagram	diagram	NN
40119	542	10	,	,	,
40119	542	11	Fig	Fig	NNP
40119	542	12	.	.	.
40119	543	1	17	17	CD
40119	543	2	.	.	.
40119	544	1	To	to	IN
40119	544	2	most	most	JJS
40119	544	3	persons	person	NNS
40119	544	4	the	the	DT
40119	544	5	lines	line	NNS
40119	544	6	occupying	occupy	VBG
40119	544	7	the	the	DT
40119	544	8	middle	middle	JJ
40119	544	9	portion	portion	NN
40119	544	10	will	will	MD
40119	544	11	appear	appear	VB
40119	544	12	either	either	CC
40119	544	13	much	much	JJ
40119	544	14	blacker	blacker	NN
40119	544	15	or	or	CC
40119	544	16	much	much	RB
40119	544	17	lighter	light	JJR
40119	544	18	than	than	IN
40119	544	19	those	those	DT
40119	544	20	at	at	IN
40119	544	21	the	the	DT
40119	544	22	two	two	CD
40119	544	23	ends	end	NNS
40119	544	24	,	,	,
40119	544	25	though	though	IN
40119	544	26	in	in	IN
40119	544	27	fact	fact	NN
40119	544	28	they	-PRON-	PRP
40119	544	29	are	be	VBP
40119	544	30	exactly	exactly	RB
40119	544	31	alike	alike	JJ
40119	544	32	.	.	.
40119	545	1	When	when	WRB
40119	545	2	this	this	DT
40119	545	3	form	form	NN
40119	545	4	of	of	IN
40119	545	5	astigmatism	astigmatism	NN
40119	545	6	is	be	VBZ
40119	545	7	excessive	excessive	JJ
40119	545	8	,	,	,
40119	545	9	it	-PRON-	PRP
40119	545	10	may	may	MD
40119	545	11	be	be	VB
40119	545	12	corrected	correct	VBN
40119	545	13	by	by	IN
40119	545	14	the	the	DT
40119	545	15	use	use	NN
40119	545	16	of	of	IN
40119	545	17	spectacles	spectacle	NNS
40119	545	18	fitted	fit	VBN
40119	545	19	with	with	IN
40119	545	20	cylindrical	cylindrical	JJ
40119	545	21	lenses	lense	NNS
40119	545	22	.	.	.
40119	546	1	[	[	-LRB-
40119	546	2	Illustration	illustration	NN
40119	546	3	:	:	:
40119	546	4	_	_	NNP
40119	546	5	Fig	Fig	NNP
40119	546	6	.	.	.
40119	547	1	17.--Effect	17.--effect	CD
40119	547	2	of	of	IN
40119	547	3	Astigmatism	Astigmatism	NNP
40119	547	4	.	.	.
40119	547	5	_	_	NNP
40119	547	6	]	]	-RRB-
40119	547	7	But	but	CC
40119	547	8	there	there	EX
40119	547	9	is	be	VBZ
40119	547	10	a	a	DT
40119	547	11	different	different	JJ
40119	547	12	kind	kind	NN
40119	547	13	of	of	IN
40119	547	14	astigmatism	astigmatism	NN
40119	547	15	--	--	:
40119	547	16	irregular	irregular	JJ
40119	547	17	astigmatism	astigmatism	NN
40119	547	18	it	-PRON-	PRP
40119	547	19	is	be	VBZ
40119	547	20	called	call	VBN
40119	547	21	--	--	:
40119	547	22	to	to	TO
40119	547	23	which	which	WDT
40119	547	24	every	every	DT
40119	547	25	one	one	NN
40119	547	26	is	be	VBZ
40119	547	27	more	more	RBR
40119	547	28	or	or	CC
40119	547	29	less	less	RBR
40119	547	30	a	a	DT
40119	547	31	victim	victim	NN
40119	547	32	,	,	,
40119	547	33	and	and	CC
40119	547	34	which	which	WDT
40119	547	35	can	can	MD
40119	547	36	not	not	RB
40119	547	37	be	be	VB
40119	547	38	relieved	relieve	VBN
40119	547	39	by	by	IN
40119	547	40	any	any	DT
40119	547	41	artificial	artificial	JJ
40119	547	42	appliances	appliance	NNS
40119	547	43	.	.	.
40119	548	1	Fortunately	fortunately	RB
40119	548	2	it	-PRON-	PRP
40119	548	3	does	do	VBZ
40119	548	4	not	not	RB
40119	548	5	often	often	RB
40119	548	6	cause	cause	VB
40119	548	7	much	much	JJ
40119	548	8	practical	practical	JJ
40119	548	9	inconvenience	inconvenience	NN
40119	548	10	.	.	.
40119	549	1	Irregular	irregular	JJ
40119	549	2	astigmatism	astigmatism	NN
40119	549	3	is	be	VBZ
40119	549	4	commonly	commonly	RB
40119	549	5	demonstrated	demonstrate	VBN
40119	549	6	in	in	IN
40119	549	7	the	the	DT
40119	549	8	following	follow	VBG
40119	549	9	manner	manner	NN
40119	549	10	.	.	.
40119	550	1	With	with	IN
40119	550	2	the	the	DT
40119	550	3	point	point	NN
40119	550	4	of	of	IN
40119	550	5	a	a	DT
40119	550	6	fine	fine	JJ
40119	550	7	needle	needle	NN
40119	550	8	,	,	,
40119	550	9	prick	prick	VB
40119	550	10	a	a	DT
40119	550	11	very	very	RB
40119	550	12	small	small	JJ
40119	550	13	hole	hole	NN
40119	550	14	in	in	IN
40119	550	15	a	a	DT
40119	550	16	sheet	sheet	NN
40119	550	17	of	of	IN
40119	550	18	tinfoil	tinfoil	NN
40119	550	19	.	.	.
40119	551	1	Hold	hold	VB
40119	551	2	up	up	RP
40119	551	3	the	the	DT
40119	551	4	tinfoil	tinfoil	NN
40119	551	5	to	to	IN
40119	551	6	the	the	DT
40119	551	7	light	light	NN
40119	551	8	and	and	CC
40119	551	9	look	look	VB
40119	551	10	at	at	IN
40119	551	11	the	the	DT
40119	551	12	hole	hole	NN
40119	551	13	with	with	IN
40119	551	14	one	one	CD
40119	551	15	eye	eye	NN
40119	551	16	,	,	,
40119	551	17	the	the	DT
40119	551	18	other	other	JJ
40119	551	19	being	be	VBG
40119	551	20	closed	close	VBN
40119	551	21	.	.	.
40119	552	1	Even	even	RB
40119	552	2	at	at	IN
40119	552	3	the	the	DT
40119	552	4	distance	distance	NN
40119	552	5	of	of	IN
40119	552	6	most	most	JJS
40119	552	7	distinct	distinct	JJ
40119	552	8	vision	vision	NN
40119	552	9	--	--	:
40119	552	10	ten	ten	CD
40119	552	11	inches	inch	NNS
40119	552	12	or	or	CC
40119	552	13	thereabouts,--there	thereabouts,--there	NNP
40119	552	14	will	will	MD
40119	552	15	probably	probably	RB
40119	552	16	be	be	VB
40119	552	17	a	a	DT
40119	552	18	ragged	ragged	JJ
40119	552	19	appearance	appearance	NN
40119	552	20	about	about	IN
40119	552	21	the	the	DT
40119	552	22	hole	hole	NN
40119	552	23	,	,	,
40119	552	24	as	as	IN
40119	552	25	if	if	IN
40119	552	26	it	-PRON-	PRP
40119	552	27	were	be	VBD
40119	552	28	not	not	RB
40119	552	29	perfectly	perfectly	RB
40119	552	30	round	round	JJ
40119	552	31	.	.	.
40119	553	1	But	but	CC
40119	553	2	if	if	IN
40119	553	3	you	-PRON-	PRP
40119	553	4	bring	bring	VBP
40119	553	5	the	the	DT
40119	553	6	tinfoil	tinfoil	NN
40119	553	7	an	an	DT
40119	553	8	inch	inch	NN
40119	553	9	or	or	CC
40119	553	10	two	two	CD
40119	553	11	nearer	nearer	NNS
40119	553	12	to	to	IN
40119	553	13	the	the	DT
40119	553	14	eye	eye	NN
40119	553	15	,	,	,
40119	553	16	the	the	DT
40119	553	17	hole	hole	NN
40119	553	18	will	will	MD
40119	553	19	not	not	RB
40119	553	20	seem	seem	VB
40119	553	21	to	to	TO
40119	553	22	be	be	VB
40119	553	23	even	even	RB
40119	553	24	approximately	approximately	RB
40119	553	25	circular	circular	JJ
40119	553	26	;	;	:
40119	553	27	it	-PRON-	PRP
40119	553	28	will	will	MD
40119	553	29	assume	assume	VB
40119	553	30	the	the	DT
40119	553	31	form	form	NN
40119	553	32	of	of	IN
40119	553	33	a	a	DT
40119	553	34	little	little	JJ
40119	553	35	star	star	NN
40119	553	36	with	with	IN
40119	553	37	five	five	CD
40119	553	38	or	or	CC
40119	553	39	more	more	JJR
40119	553	40	distinct	distinct	JJ
40119	553	41	rays	ray	NNS
40119	553	42	.	.	.
40119	554	1	The	the	DT
40119	554	2	configuration	configuration	NN
40119	554	3	of	of	IN
40119	554	4	the	the	DT
40119	554	5	star	star	NN
40119	554	6	is	be	VBZ
40119	554	7	not	not	RB
40119	554	8	generally	generally	RB
40119	554	9	the	the	DT
40119	554	10	same	same	JJ
40119	554	11	for	for	IN
40119	554	12	the	the	DT
40119	554	13	right	right	JJ
40119	554	14	eye	eye	NN
40119	554	15	as	as	IN
40119	554	16	for	for	IN
40119	554	17	the	the	DT
40119	554	18	left	left	NN
40119	554	19	;	;	:
40119	554	20	the	the	DT
40119	554	21	rays	ray	NNS
40119	554	22	may	may	MD
40119	554	23	differ	differ	VB
40119	554	24	in	in	IN
40119	554	25	number	number	NN
40119	554	26	and	and	CC
40119	554	27	in	in	IN
40119	554	28	relative	relative	JJ
40119	554	29	magnitude	magnitude	NN
40119	554	30	,	,	,
40119	554	31	and	and	CC
40119	554	32	may	may	MD
40119	554	33	be	be	VB
40119	554	34	inclined	incline	VBN
40119	554	35	at	at	IN
40119	554	36	different	different	JJ
40119	554	37	angles	angle	NNS
40119	554	38	to	to	IN
40119	554	39	the	the	DT
40119	554	40	vertical	vertical	NN
40119	554	41	.	.	.
40119	555	1	Fig	fig	NN
40119	555	2	.	.	.
40119	556	1	18	18	CD
40119	556	2	shows	show	VBZ
40119	556	3	the	the	DT
40119	556	4	stars	star	NNS
40119	556	5	as	as	IN
40119	556	6	they	-PRON-	PRP
40119	556	7	appear	appear	VBP
40119	556	8	to	to	IN
40119	556	9	my	-PRON-	PRP$
40119	556	10	two	two	CD
40119	556	11	eyes	eye	NNS
40119	556	12	,	,	,
40119	556	13	when	when	WRB
40119	556	14	the	the	DT
40119	556	15	illumination	illumination	NN
40119	556	16	is	be	VBZ
40119	556	17	rather	rather	RB
40119	556	18	strong	strong	JJ
40119	556	19	.	.	.
40119	557	1	[	[	-LRB-
40119	557	2	Illustration	illustration	NN
40119	557	3	:	:	:
40119	557	4	_	_	NNP
40119	557	5	Fig	Fig	NNP
40119	557	6	.	.	.
40119	558	1	18.--Star	18.--star	LS
40119	558	2	-	-	:
40119	558	3	like	like	JJ
40119	558	4	Images	image	NNS
40119	558	5	of	of	IN
40119	558	6	luminous	luminous	JJ
40119	558	7	Point	Point	NNP
40119	558	8	.	.	.
40119	558	9	_	_	NNP
40119	558	10	]	]	-RRB-
40119	558	11	If	if	IN
40119	558	12	several	several	JJ
40119	558	13	holes	hole	NNS
40119	558	14	are	be	VBP
40119	558	15	pricked	prick	VBN
40119	558	16	in	in	IN
40119	558	17	the	the	DT
40119	558	18	tinfoil	tinfoil	NN
40119	558	19	,	,	,
40119	558	20	each	each	DT
40119	558	21	will	will	MD
40119	558	22	of	of	IN
40119	558	23	course	course	NN
40119	558	24	originate	originate	VB
40119	558	25	a	a	DT
40119	558	26	separate	separate	JJ
40119	558	27	star	star	NN
40119	558	28	,	,	,
40119	558	29	and	and	CC
40119	558	30	all	all	PDT
40119	558	31	the	the	DT
40119	558	32	stars	star	NNS
40119	558	33	as	as	IN
40119	558	34	seen	see	VBN
40119	558	35	by	by	IN
40119	558	36	the	the	DT
40119	558	37	same	same	JJ
40119	558	38	eye	eye	NN
40119	558	39	will	will	MD
40119	558	40	appear	appear	VB
40119	558	41	to	to	TO
40119	558	42	be	be	VB
40119	558	43	figured	figure	VBN
40119	558	44	upon	upon	IN
40119	558	45	the	the	DT
40119	558	46	same	same	JJ
40119	558	47	model	model	NN
40119	558	48	,	,	,
40119	558	49	though	though	IN
40119	558	50	some	some	DT
40119	558	51	may	may	MD
40119	558	52	be	be	VB
40119	558	53	larger	large	JJR
40119	558	54	or	or	CC
40119	558	55	brighter	bright	JJR
40119	558	56	than	than	IN
40119	558	57	others	other	NNS
40119	558	58	.	.	.
40119	559	1	[	[	-LRB-
40119	559	2	Illustration	illustration	NN
40119	559	3	:	:	:
40119	559	4	_	_	NNP
40119	559	5	Fig	Fig	NNP
40119	559	6	.	.	.
40119	560	1	19.--Sutures	19.--sutures	CD
40119	560	2	of	of	IN
40119	560	3	crystalline	crystalline	NN
40119	560	4	Lens	Lens	NNP
40119	560	5	.	.	.
40119	560	6	_	_	NNP
40119	560	7	]	]	-RRB-
40119	560	8	There	there	EX
40119	560	9	can	can	MD
40119	560	10	be	be	VB
40119	560	11	no	no	DT
40119	560	12	doubt	doubt	NN
40119	560	13	that	that	IN
40119	560	14	the	the	DT
40119	560	15	stellate	stellate	JJ
40119	560	16	form	form	NN
40119	560	17	observed	observe	VBN
40119	560	18	in	in	IN
40119	560	19	these	these	DT
40119	560	20	experiments	experiment	NNS
40119	560	21	,	,	,
40119	560	22	as	as	RB
40119	560	23	well	well	RB
40119	560	24	as	as	IN
40119	560	25	that	that	DT
40119	560	26	of	of	IN
40119	560	27	the	the	DT
40119	560	28	stars	star	NNS
40119	560	29	of	of	IN
40119	560	30	heaven	heaven	NN
40119	560	31	themselves	-PRON-	PRP
40119	560	32	(	(	-LRB-
40119	560	33	which	which	WDT
40119	560	34	with	with	IN
40119	560	35	perfect	perfect	JJ
40119	560	36	vision	vision	NN
40119	560	37	would	would	MD
40119	560	38	be	be	VB
40119	560	39	seen	see	VBN
40119	560	40	simply	simply	RB
40119	560	41	as	as	IN
40119	560	42	luminous	luminous	JJ
40119	560	43	points	point	NNS
40119	560	44	)	)	-RRB-
40119	560	45	,	,	,
40119	560	46	is	be	VBZ
40119	560	47	a	a	DT
40119	560	48	consequence	consequence	NN
40119	560	49	of	of	IN
40119	560	50	the	the	DT
40119	560	51	singular	singular	JJ
40119	560	52	structure	structure	NN
40119	560	53	of	of	IN
40119	560	54	the	the	DT
40119	560	55	crystalline	crystalline	JJ
40119	560	56	lens	lens	NN
40119	560	57	of	of	IN
40119	560	58	the	the	DT
40119	560	59	eye	eye	NN
40119	560	60	.	.	.
40119	561	1	This	this	DT
40119	561	2	does	do	VBZ
40119	561	3	not	not	RB
40119	561	4	consist	consist	VB
40119	561	5	of	of	IN
40119	561	6	one	one	CD
40119	561	7	uniform	uniform	JJ
40119	561	8	homogeneous	homogeneous	JJ
40119	561	9	mass	mass	NN
40119	561	10	like	like	IN
40119	561	11	a	a	DT
40119	561	12	glass	glass	NN
40119	561	13	lens	lens	NN
40119	561	14	,	,	,
40119	561	15	but	but	CC
40119	561	16	of	of	IN
40119	561	17	a	a	DT
40119	561	18	number	number	NN
40119	561	19	of	of	IN
40119	561	20	separate	separate	JJ
40119	561	21	portions	portion	NNS
40119	561	22	pieced	piece	VBN
40119	561	23	together	together	RB
40119	561	24	radially	radially	NNP
40119	561	25	,	,	,
40119	561	26	as	as	IN
40119	561	27	indicated	indicate	VBN
40119	561	28	diagrammatically	diagrammatically	RB
40119	561	29	in	in	IN
40119	561	30	Fig	Fig	NNP
40119	561	31	.	.	.
40119	562	1	19	19	CD
40119	562	2	.	.	.
40119	563	1	In	in	IN
40119	563	2	the	the	DT
40119	563	3	eye	eye	NN
40119	563	4	of	of	IN
40119	563	5	a	a	DT
40119	563	6	newly	newly	RB
40119	563	7	-	-	HYPH
40119	563	8	born	bear	VBN
40119	563	9	child	child	NN
40119	563	10	there	there	EX
40119	563	11	are	be	VBP
40119	563	12	three	three	CD
40119	563	13	such	such	JJ
40119	563	14	portions	portion	NNS
40119	563	15	,	,	,
40119	563	16	and	and	CC
40119	563	17	the	the	DT
40119	563	18	radial	radial	JJ
40119	563	19	junctions	junction	NNS
40119	563	20	on	on	IN
40119	563	21	one	one	CD
40119	563	22	side	side	NN
40119	563	23	of	of	IN
40119	563	24	the	the	DT
40119	563	25	lens	lens	NN
40119	563	26	are	be	VBP
40119	563	27	not	not	RB
40119	563	28	opposite	opposite	JJ
40119	563	29	to	to	IN
40119	563	30	those	those	DT
40119	563	31	on	on	IN
40119	563	32	the	the	DT
40119	563	33	other	other	JJ
40119	563	34	,	,	,
40119	563	35	but	but	CC
40119	563	36	are	be	VBP
40119	563	37	intermediate	intermediate	JJ
40119	563	38	.	.	.
40119	564	1	In	in	IN
40119	564	2	the	the	DT
40119	564	3	figure	figure	NN
40119	564	4	the	the	DT
40119	564	5	junctions	junction	NNS
40119	564	6	at	at	IN
40119	564	7	the	the	DT
40119	564	8	front	front	NN
40119	564	9	of	of	IN
40119	564	10	the	the	DT
40119	564	11	lens	lens	NN
40119	564	12	are	be	VBP
40119	564	13	represented	represent	VBN
40119	564	14	by	by	IN
40119	564	15	continuous	continuous	JJ
40119	564	16	lines	line	NNS
40119	564	17	and	and	CC
40119	564	18	those	those	DT
40119	564	19	at	at	IN
40119	564	20	the	the	DT
40119	564	21	back	back	NN
40119	564	22	by	by	IN
40119	564	23	dots	dot	NNS
40119	564	24	.	.	.
40119	565	1	The	the	DT
40119	565	2	number	number	NN
40119	565	3	of	of	IN
40119	565	4	sutures	suture	NNS
40119	565	5	found	find	VBN
40119	565	6	in	in	IN
40119	565	7	the	the	DT
40119	565	8	adult	adult	NN
40119	565	9	lens	lens	NN
40119	565	10	is	be	VBZ
40119	565	11	generally	generally	RB
40119	565	12	greater	great	JJR
40119	565	13	than	than	IN
40119	565	14	six	six	CD
40119	565	15	.	.	.
40119	566	1	But	but	CC
40119	566	2	while	while	IN
40119	566	3	it	-PRON-	PRP
40119	566	4	is	be	VBZ
40119	566	5	certain	certain	JJ
40119	566	6	that	that	IN
40119	566	7	these	these	DT
40119	566	8	radial	radial	JJ
40119	566	9	sutures	suture	NNS
40119	566	10	are	be	VBP
40119	566	11	in	in	IN
40119	566	12	some	some	DT
40119	566	13	way	way	NN
40119	566	14	closely	closely	RB
40119	566	15	connected	connect	VBN
40119	566	16	with	with	IN
40119	566	17	the	the	DT
40119	566	18	luminous	luminous	JJ
40119	566	19	rays	ray	NNS
40119	566	20	which	which	WDT
40119	566	21	appear	appear	VBP
40119	566	22	to	to	TO
40119	566	23	proceed	proceed	VB
40119	566	24	from	from	IN
40119	566	25	a	a	DT
40119	566	26	bright	bright	JJ
40119	566	27	point	point	NN
40119	566	28	,	,	,
40119	566	29	it	-PRON-	PRP
40119	566	30	must	must	MD
40119	566	31	be	be	VB
40119	566	32	confessed	confess	VBN
40119	566	33	that	that	IN
40119	566	34	no	no	DT
40119	566	35	adequate	adequate	JJ
40119	566	36	explanation	explanation	NN
40119	566	37	has	have	VBZ
40119	566	38	yet	yet	RB
40119	566	39	been	be	VBN
40119	566	40	given	give	VBN
40119	566	41	of	of	IN
40119	566	42	the	the	DT
40119	566	43	precise	precise	JJ
40119	566	44	manner	manner	NN
40119	566	45	in	in	IN
40119	566	46	which	which	WDT
40119	566	47	the	the	DT
40119	566	48	phenomenon	phenomenon	NN
40119	566	49	is	be	VBZ
40119	566	50	brought	bring	VBN
40119	566	51	about	about	RP
40119	566	52	.	.	.
40119	567	1	Ophthalmologists	ophthalmologist	NNS
40119	567	2	seem	seem	VBP
40119	567	3	to	to	TO
40119	567	4	have	have	VB
40119	567	5	been	be	VBN
40119	567	6	contented	content	VBN
40119	567	7	with	with	IN
40119	567	8	vague	vague	JJ
40119	567	9	statements	statement	NNS
40119	567	10	about	about	IN
40119	567	11	irregular	irregular	JJ
40119	567	12	refraction	refraction	NN
40119	567	13	,	,	,
40119	567	14	but	but	CC
40119	567	15	what	what	WDT
40119	567	16	kind	kind	NN
40119	567	17	of	of	IN
40119	567	18	irregularity	irregularity	NN
40119	567	19	would	would	MD
40119	567	20	sufficiently	sufficiently	RB
40119	567	21	account	account	VB
40119	567	22	for	for	IN
40119	567	23	all	all	PDT
40119	567	24	the	the	DT
40119	567	25	facts	fact	NNS
40119	567	26	of	of	IN
40119	567	27	observation	observation	NN
40119	567	28	has	have	VBZ
40119	567	29	never	never	RB
40119	567	30	,	,	,
40119	567	31	so	so	RB
40119	567	32	far	far	RB
40119	567	33	as	as	IN
40119	567	34	I	-PRON-	PRP
40119	567	35	know	know	VBP
40119	567	36	,	,	,
40119	567	37	been	be	VBN
40119	567	38	exactly	exactly	RB
40119	567	39	determined	determine	VBN
40119	567	40	.	.	.
40119	568	1	The	the	DT
40119	568	2	problem	problem	NN
40119	568	3	can	can	MD
40119	568	4	hardly	hardly	RB
40119	568	5	be	be	VB
40119	568	6	very	very	RB
40119	568	7	difficult	difficult	JJ
40119	568	8	of	of	IN
40119	568	9	solution	solution	NN
40119	568	10	,	,	,
40119	568	11	and	and	CC
40119	568	12	would	would	MD
40119	568	13	,	,	,
40119	568	14	no	no	RB
40119	568	15	doubt	doubt	RB
40119	568	16	,	,	,
40119	568	17	readily	readily	RB
40119	568	18	yield	yield	VBP
40119	568	19	to	to	IN
40119	568	20	the	the	DT
40119	568	21	joint	joint	JJ
40119	568	22	efforts	effort	NNS
40119	568	23	of	of	IN
40119	568	24	a	a	DT
40119	568	25	physicist	physicist	NN
40119	568	26	and	and	CC
40119	568	27	a	a	DT
40119	568	28	physiologist	physiologist	NN
40119	568	29	.	.	.
40119	569	1	The	the	DT
40119	569	2	phenomena	phenomenon	NNS
40119	569	3	of	of	IN
40119	569	4	irregular	irregular	JJ
40119	569	5	astigmatism	astigmatism	NN
40119	569	6	as	as	IN
40119	569	7	exhibited	exhibit	VBN
40119	569	8	by	by	IN
40119	569	9	a	a	DT
40119	569	10	normal	normal	JJ
40119	569	11	eye	eye	NN
40119	569	12	are	be	VBP
40119	569	13	exceedingly	exceedingly	RB
40119	569	14	curious	curious	JJ
40119	569	15	,	,	,
40119	569	16	and	and	CC
40119	569	17	perhaps	perhaps	RB
40119	569	18	I	-PRON-	PRP
40119	569	19	may	may	MD
40119	569	20	be	be	VB
40119	569	21	allowed	allow	VBN
40119	569	22	to	to	TO
40119	569	23	refer	refer	VB
40119	569	24	briefly	briefly	RB
40119	569	25	to	to	IN
40119	569	26	one	one	CD
40119	569	27	or	or	CC
40119	569	28	two	two	CD
40119	569	29	experiments	experiment	NNS
40119	569	30	which	which	WDT
40119	569	31	I	-PRON-	PRP
40119	569	32	have	have	VBP
40119	569	33	myself	-PRON-	PRP
40119	569	34	made	make	VBN
40119	569	35	on	on	IN
40119	569	36	the	the	DT
40119	569	37	subject	subject	NN
40119	569	38	.	.	.
40119	570	1	[	[	-LRB-
40119	570	2	10	10	CD
40119	570	3	]	]	-RRB-
40119	570	4	[	[	-LRB-
40119	570	5	Illustration	illustration	NN
40119	570	6	:	:	:
40119	570	7	_	_	NNP
40119	570	8	Fig	Fig	NNP
40119	570	9	.	.	.
40119	571	1	20.--Multiple	20.--multiple	CD
40119	571	2	Images	image	NNS
40119	571	3	of	of	IN
40119	571	4	a	a	DT
40119	571	5	luminous	luminous	JJ
40119	571	6	Point	Point	NNP
40119	571	7	.	.	.
40119	571	8	_	_	NNP
40119	571	9	]	]	-RRB-
40119	571	10	Light	light	NN
40119	571	11	from	from	IN
40119	571	12	an	an	DT
40119	571	13	enclosed	enclose	VBN
40119	571	14	electric	electric	JJ
40119	571	15	lamp	lamp	NN
40119	571	16	of	of	IN
40119	571	17	twenty	twenty	CD
40119	571	18	-	-	HYPH
40119	571	19	five	five	CD
40119	571	20	candle	candle	NN
40119	571	21	power	power	NN
40119	571	22	was	be	VBD
40119	571	23	admitted	admit	VBN
40119	571	24	through	through	IN
40119	571	25	a	a	DT
40119	571	26	circular	circular	JJ
40119	571	27	aperture	aperture	NN
40119	571	28	about	about	IN
40119	571	29	1/12-inch	1/12-inch	NNS
40119	571	30	(	(	-LRB-
40119	571	31	2	2	CD
40119	571	32	mm	mm	CD
40119	571	33	.	.	.
40119	571	34	)	)	-RRB-
40119	572	1	in	in	IN
40119	572	2	diameter	diameter	NN
40119	572	3	perforated	perforate	VBN
40119	572	4	in	in	IN
40119	572	5	a	a	DT
40119	572	6	brass	brass	NN
40119	572	7	plate	plate	NN
40119	572	8	;	;	:
40119	572	9	a	a	DT
40119	572	10	sheet	sheet	NN
40119	572	11	of	of	IN
40119	572	12	ground	ground	NN
40119	572	13	glass	glass	NN
40119	572	14	and	and	CC
40119	572	15	another	another	DT
40119	572	16	of	of	IN
40119	572	17	ruby	ruby	NNP
40119	572	18	-	-	HYPH
40119	572	19	red	red	JJ
40119	572	20	glass	glass	NN
40119	572	21	were	be	VBD
40119	572	22	placed	place	VBN
40119	572	23	behind	behind	IN
40119	572	24	the	the	DT
40119	572	25	aperture	aperture	NN
40119	572	26	.	.	.
40119	573	1	When	when	WRB
40119	573	2	the	the	DT
40119	573	3	little	little	JJ
40119	573	4	disk	disk	NN
40119	573	5	of	of	IN
40119	573	6	monochromatic	monochromatic	JJ
40119	573	7	light	light	NN
40119	573	8	thus	thus	RB
40119	573	9	formed	form	VBN
40119	573	10	was	be	VBD
40119	573	11	looked	look	VBN
40119	573	12	at	at	IN
40119	573	13	through	through	IN
40119	573	14	a	a	DT
40119	573	15	concave	concave	NNP
40119	573	16	lens	lens	NN
40119	573	17	of	of	IN
40119	573	18	eleven	eleven	CD
40119	573	19	inches	inch	NNS
40119	573	20	focal	focal	JJ
40119	573	21	length	length	NN
40119	573	22	from	from	IN
40119	573	23	a	a	DT
40119	573	24	suitable	suitable	JJ
40119	573	25	distance	distance	NN
40119	573	26	--	--	:
40119	573	27	nearly	nearly	RB
40119	573	28	two	two	CD
40119	573	29	feet	foot	NNS
40119	573	30	in	in	IN
40119	573	31	my	-PRON-	PRP$
40119	573	32	own	own	JJ
40119	573	33	case	case	NN
40119	573	34	--	--	:
40119	573	35	it	-PRON-	PRP
40119	573	36	appeared	appear	VBD
40119	573	37	as	as	IN
40119	573	38	seven	seven	CD
40119	573	39	bright	bright	JJ
40119	573	40	round	round	JJ
40119	573	41	spots	spot	NNS
40119	573	42	upon	upon	IN
40119	573	43	a	a	DT
40119	573	44	less	less	RBR
40119	573	45	luminous	luminous	JJ
40119	573	46	ground	ground	NN
40119	573	47	.	.	.
40119	574	1	The	the	DT
40119	574	2	appearance	appearance	NN
40119	574	3	is	be	VBZ
40119	574	4	represented	represent	VBN
40119	574	5	in	in	IN
40119	574	6	a	a	DT
40119	574	7	somewhat	somewhat	RB
40119	574	8	idealised	idealised	JJ
40119	574	9	form	form	NN
40119	574	10	in	in	IN
40119	574	11	Fig	Fig	NNP
40119	574	12	.	.	.
40119	575	1	20	20	CD
40119	575	2	;	;	:
40119	575	3	but	but	CC
40119	575	4	the	the	DT
40119	575	5	spots	spot	NNS
40119	575	6	were	be	VBD
40119	575	7	not	not	RB
40119	575	8	quite	quite	RB
40119	575	9	so	so	RB
40119	575	10	distinct	distinct	JJ
40119	575	11	nor	nor	CC
40119	575	12	so	so	RB
40119	575	13	regularly	regularly	RB
40119	575	14	disposed	disposed	JJ
40119	575	15	as	as	IN
40119	575	16	there	there	EX
40119	575	17	shown	show	VBN
40119	575	18	,	,	,
40119	575	19	neither	neither	CC
40119	575	20	was	be	VBD
40119	575	21	their	-PRON-	PRP$
40119	575	22	configuration	configuration	NN
40119	575	23	exactly	exactly	RB
40119	575	24	the	the	DT
40119	575	25	same	same	JJ
40119	575	26	for	for	IN
40119	575	27	the	the	DT
40119	575	28	right	right	JJ
40119	575	29	eye	eye	NN
40119	575	30	as	as	IN
40119	575	31	for	for	IN
40119	575	32	the	the	DT
40119	575	33	left	left	NN
40119	575	34	.	.	.
40119	576	1	On	on	IN
40119	576	2	gradually	gradually	RB
40119	576	3	increasing	increase	VBG
40119	576	4	the	the	DT
40119	576	5	distance	distance	NN
40119	576	6	each	each	DT
40119	576	7	circumferential	circumferential	JJ
40119	576	8	spot	spot	NN
40119	576	9	became	become	VBD
40119	576	10	at	at	IN
40119	576	11	first	first	RB
40119	576	12	elongated	elongate	VBN
40119	576	13	radially	radially	NN
40119	576	14	and	and	CC
40119	576	15	afterwards	afterwards	RB
40119	576	16	split	split	VBN
40119	576	17	up	up	RP
40119	576	18	into	into	IN
40119	576	19	two	two	CD
40119	576	20	circular	circular	JJ
40119	576	21	ones	one	NNS
40119	576	22	;	;	:
40119	576	23	at	at	IN
40119	576	24	the	the	DT
40119	576	25	same	same	JJ
40119	576	26	time	time	NN
40119	576	27	new	new	JJ
40119	576	28	spots	spot	NNS
40119	576	29	were	be	VBD
40119	576	30	developed	develop	VBN
40119	576	31	upon	upon	IN
40119	576	32	the	the	DT
40119	576	33	luminous	luminous	JJ
40119	576	34	ground	ground	NN
40119	576	35	,	,	,
40119	576	36	the	the	DT
40119	576	37	approximate	approximate	JJ
40119	576	38	symmetry	symmetry	NN
40119	576	39	of	of	IN
40119	576	40	the	the	DT
40119	576	41	figure	figure	NN
40119	576	42	being	be	VBG
40119	576	43	still	still	RB
40119	576	44	retained	retain	VBN
40119	576	45	.	.	.
40119	577	1	Fig	fig	NN
40119	577	2	.	.	.
40119	578	1	21	21	CD
40119	578	2	represents	represent	VBZ
40119	578	3	a	a	DT
40119	578	4	certain	certain	JJ
40119	578	5	stage	stage	NN
40119	578	6	in	in	IN
40119	578	7	this	this	DT
40119	578	8	process	process	NN
40119	578	9	of	of	IN
40119	578	10	expansion	expansion	NN
40119	578	11	.	.	.
40119	579	1	The	the	DT
40119	579	2	appearance	appearance	NN
40119	579	3	was	be	VBD
40119	579	4	happily	happily	RB
40119	579	5	likened	liken	VBN
40119	579	6	by	by	IN
40119	579	7	an	an	DT
40119	579	8	observer	observer	NN
40119	579	9	who	who	WP
40119	579	10	repeated	repeat	VBD
40119	579	11	the	the	DT
40119	579	12	experiment	experiment	NN
40119	579	13	to	to	IN
40119	579	14	that	that	DT
40119	579	15	of	of	IN
40119	579	16	a	a	DT
40119	579	17	large	large	JJ
40119	579	18	unripe	unripe	JJ
40119	579	19	blackberry	blackberry	NN
40119	579	20	.	.	.
40119	580	1	As	as	IN
40119	580	2	the	the	DT
40119	580	3	distance	distance	NN
40119	580	4	was	be	VBD
40119	580	5	still	still	RB
40119	580	6	further	far	RBR
40119	580	7	increased	increase	VBN
40119	580	8	,	,	,
40119	580	9	the	the	DT
40119	580	10	spots	spot	NNS
40119	580	11	continued	continue	VBD
40119	580	12	to	to	TO
40119	580	13	multiply	multiply	VB
40119	580	14	,	,	,
40119	580	15	ultimately	ultimately	RB
40119	580	16	becoming	become	VBG
40119	580	17	very	very	RB
40119	580	18	numerous	numerous	JJ
40119	580	19	;	;	:
40119	580	20	their	-PRON-	PRP$
40119	580	21	arrangement	arrangement	NN
40119	580	22	however	however	RB
40119	580	23	soon	soon	RB
40119	580	24	became	become	VBD
40119	580	25	much	much	RB
40119	580	26	less	less	RBR
40119	580	27	regular	regular	JJ
40119	580	28	,	,	,
40119	580	29	and	and	CC
40119	580	30	the	the	DT
40119	580	31	definition	definition	NN
40119	580	32	of	of	IN
40119	580	33	most	most	JJS
40119	580	34	of	of	IN
40119	580	35	them	-PRON-	PRP
40119	580	36	less	less	RBR
40119	580	37	distinct	distinct	JJ
40119	580	38	.	.	.
40119	581	1	At	at	IN
40119	581	2	about	about	RB
40119	581	3	twenty	twenty	CD
40119	581	4	feet	foot	NNS
40119	581	5	there	there	EX
40119	581	6	was	be	VBD
40119	581	7	seen	see	VBN
40119	581	8	a	a	DT
40119	581	9	luminous	luminous	JJ
40119	581	10	patch	patch	NN
40119	581	11	,	,	,
40119	581	12	roughly	roughly	RB
40119	581	13	circular	circular	JJ
40119	581	14	in	in	IN
40119	581	15	outline	outline	NN
40119	581	16	,	,	,
40119	581	17	and	and	CC
40119	581	18	covered	cover	VBN
40119	581	19	with	with	IN
40119	581	20	irregular	irregular	JJ
40119	581	21	speckles	speckle	NNS
40119	581	22	;	;	,
40119	581	23	superposed	superpose	VBN
40119	581	24	upon	upon	IN
40119	581	25	this	this	DT
40119	581	26	were	be	VBD
40119	581	27	strings	string	NNS
40119	581	28	of	of	IN
40119	581	29	bright	bright	JJ
40119	581	30	,	,	,
40119	581	31	partially	partially	RB
40119	581	32	overlapping	overlap	VBG
40119	581	33	spots	spot	NNS
40119	581	34	,	,	,
40119	581	35	corresponding	correspond	VBG
40119	581	36	apparently	apparently	RB
40119	581	37	to	to	IN
40119	581	38	the	the	DT
40119	581	39	sutures	suture	NNS
40119	581	40	of	of	IN
40119	581	41	the	the	DT
40119	581	42	crystalline	crystalline	NN
40119	581	43	lens	lens	NN
40119	581	44	.	.	.
40119	582	1	[	[	-LRB-
40119	582	2	Illustration	illustration	NN
40119	582	3	:	:	:
40119	582	4	_	_	NNP
40119	582	5	Fig	Fig	NNP
40119	582	6	.	.	.
40119	583	1	21.--Increased	21.--increased	CD
40119	583	2	number	number	NN
40119	583	3	of	of	IN
40119	583	4	Images	Images	NNP
40119	583	5	.	.	.
40119	583	6	_	_	NNP
40119	583	7	]	]	-RRB-
40119	583	8	When	when	WRB
40119	583	9	the	the	DT
40119	583	10	hole	hole	NN
40119	583	11	was	be	VBD
40119	583	12	looked	look	VBN
40119	583	13	at	at	IN
40119	583	14	from	from	IN
40119	583	15	a	a	DT
40119	583	16	moderate	moderate	JJ
40119	583	17	distance	distance	NN
40119	583	18	through	through	IN
40119	583	19	a	a	DT
40119	583	20	narrow	narrow	JJ
40119	583	21	slit	slit	NN
40119	583	22	(	(	-LRB-
40119	583	23	about	about	RB
40119	583	24	1/30	1/30	CD
40119	583	25	inch	inch	NN
40119	583	26	wide	wide	JJ
40119	583	27	)	)	-RRB-
40119	583	28	interposed	interpose	VBN
40119	583	29	between	between	IN
40119	583	30	the	the	DT
40119	583	31	eye	eye	NN
40119	583	32	and	and	CC
40119	583	33	the	the	DT
40119	583	34	lens	lens	NN
40119	583	35	,	,	,
40119	583	36	there	there	EX
40119	583	37	was	be	VBD
40119	583	38	seen	see	VBN
40119	583	39	only	only	RB
40119	583	40	a	a	DT
40119	583	41	single	single	JJ
40119	583	42	row	row	NN
40119	583	43	of	of	IN
40119	583	44	circular	circular	JJ
40119	583	45	spots	spot	NNS
40119	583	46	,	,	,
40119	583	47	which	which	WDT
40119	583	48	were	be	VBD
40119	583	49	arranged	arrange	VBN
40119	583	50	sinuously	sinuously	RB
40119	583	51	,	,	,
40119	583	52	as	as	IN
40119	583	53	shown	show	VBN
40119	583	54	in	in	IN
40119	583	55	Fig	Fig	NNP
40119	583	56	.	.	.
40119	584	1	22	22	CD
40119	584	2	.	.	.
40119	585	1	A	a	DT
40119	585	2	slight	slight	JJ
40119	585	3	movement	movement	NN
40119	585	4	of	of	IN
40119	585	5	the	the	DT
40119	585	6	slit	slit	NN
40119	585	7	in	in	IN
40119	585	8	the	the	DT
40119	585	9	direction	direction	NN
40119	585	10	perpendicular	perpendicular	JJ
40119	585	11	to	to	IN
40119	585	12	its	-PRON-	PRP$
40119	585	13	length	length	NN
40119	585	14	produced	produce	VBD
40119	585	15	a	a	DT
40119	585	16	wave	wave	NN
40119	585	17	-	-	HYPH
40119	585	18	like	like	JJ
40119	585	19	motion	motion	NN
40119	585	20	of	of	IN
40119	585	21	the	the	DT
40119	585	22	circles	circle	NNS
40119	585	23	,	,	,
40119	585	24	suggestive	suggestive	JJ
40119	585	25	,	,	,
40119	585	26	as	as	IN
40119	585	27	pointed	point	VBN
40119	585	28	out	out	RP
40119	585	29	by	by	IN
40119	585	30	the	the	DT
40119	585	31	excellent	excellent	JJ
40119	585	32	observer	observer	NN
40119	585	33	before	before	IN
40119	585	34	referred	refer	VBN
40119	585	35	to	to	IN
40119	585	36	of	of	IN
40119	585	37	the	the	DT
40119	585	38	wriggling	wriggling	NN
40119	585	39	of	of	IN
40119	585	40	a	a	DT
40119	585	41	caterpillar	caterpillar	NN
40119	585	42	.	.	.
40119	586	1	[	[	-LRB-
40119	586	2	Illustration	illustration	NN
40119	586	3	:	:	:
40119	586	4	_	_	NNP
40119	586	5	Fig	Fig	NNP
40119	586	6	.	.	.
40119	587	1	22.--Multiple	22.--multiple	CD
40119	587	2	Images	image	NNS
40119	587	3	seen	see	VBN
40119	587	4	through	through	IN
40119	587	5	a	a	DT
40119	587	6	Slit	Slit	NNP
40119	587	7	.	.	.
40119	587	8	_	_	NNP
40119	587	9	]	]	-RRB-
40119	587	10	By	by	IN
40119	587	11	sufficiently	sufficiently	RB
40119	587	12	increasing	increase	VBG
40119	587	13	the	the	DT
40119	587	14	distance	distance	NN
40119	587	15	between	between	IN
40119	587	16	the	the	DT
40119	587	17	source	source	NN
40119	587	18	of	of	IN
40119	587	19	light	light	NN
40119	587	20	and	and	CC
40119	587	21	the	the	DT
40119	587	22	eye	eye	NN
40119	587	23	,	,	,
40119	587	24	as	as	RB
40119	587	25	many	many	JJ
40119	587	26	as	as	IN
40119	587	27	twenty	twenty	CD
40119	587	28	-	-	HYPH
40119	587	29	four	four	CD
40119	587	30	or	or	CC
40119	587	31	twenty	twenty	CD
40119	587	32	-	-	HYPH
40119	587	33	five	five	CD
40119	587	34	bright	bright	JJ
40119	587	35	spots	spot	NNS
40119	587	36	might	may	MD
40119	587	37	be	be	VB
40119	587	38	made	make	VBN
40119	587	39	to	to	TO
40119	587	40	appear	appear	VB
40119	587	41	in	in	IN
40119	587	42	the	the	DT
40119	587	43	row	row	NN
40119	587	44	,	,	,
40119	587	45	but	but	CC
40119	587	46	they	-PRON-	PRP
40119	587	47	could	could	MD
40119	587	48	not	not	RB
40119	587	49	be	be	VB
40119	587	50	counted	count	VBN
40119	587	51	with	with	IN
40119	587	52	any	any	DT
40119	587	53	great	great	JJ
40119	587	54	certainty	certainty	NN
40119	587	55	.	.	.
40119	588	1	At	at	IN
40119	588	2	a	a	DT
40119	588	3	still	still	RB
40119	588	4	longer	long	JJR
40119	588	5	distance	distance	NN
40119	588	6	or	or	CC
40119	588	7	with	with	IN
40119	588	8	a	a	DT
40119	588	9	lens	lens	NN
40119	588	10	of	of	IN
40119	588	11	shorter	short	JJR
40119	588	12	focus	focus	NN
40119	588	13	(	(	-LRB-
40119	588	14	convex	convex	NNP
40119	588	15	or	or	CC
40119	588	16	concave	concave	NNP
40119	588	17	)	)	-RRB-
40119	588	18	they	-PRON-	PRP
40119	588	19	became	become	VBD
40119	588	20	less	less	RBR
40119	588	21	distinct	distinct	JJ
40119	588	22	,	,	,
40119	588	23	and	and	CC
40119	588	24	finally	finally	RB
40119	588	25	seemed	seem	VBD
40119	588	26	to	to	TO
40119	588	27	be	be	VB
40119	588	28	resolved	resolve	VBN
40119	588	29	into	into	IN
40119	588	30	a	a	DT
40119	588	31	multitude	multitude	NN
40119	588	32	of	of	IN
40119	588	33	small	small	JJ
40119	588	34	blurred	blur	VBN
40119	588	35	images	image	NNS
40119	588	36	--	--	:
40119	588	37	probably	probably	RB
40119	588	38	several	several	JJ
40119	588	39	hundreds	hundred	NNS
40119	588	40	--	--	:
40119	588	41	which	which	WDT
40119	588	42	were	be	VBD
40119	588	43	separated	separate	VBN
40119	588	44	from	from	IN
40119	588	45	one	one	CD
40119	588	46	another	another	DT
40119	588	47	by	by	IN
40119	588	48	hazy	hazy	JJ
40119	588	49	dark	dark	JJ
40119	588	50	lines	line	NNS
40119	588	51	.	.	.
40119	589	1	[	[	-LRB-
40119	589	2	Illustration	illustration	NN
40119	589	3	:	:	:
40119	589	4	_	_	NNP
40119	589	5	Fig	Fig	NNP
40119	589	6	.	.	.
40119	590	1	23.--Images	23.--images	CD
40119	590	2	of	of	IN
40119	590	3	an	an	DT
40119	590	4	electric	electric	JJ
40119	590	5	lamp	lamp	NN
40119	590	6	Filament	Filament	NNP
40119	590	7	.	.	.
40119	590	8	_	_	NNP
40119	590	9	]	]	-RRB-
40119	590	10	I	-PRON-	PRP
40119	590	11	thought	think	VBD
40119	590	12	that	that	IN
40119	590	13	the	the	DT
40119	590	14	observations	observation	NNS
40119	590	15	might	may	MD
40119	590	16	be	be	VB
40119	590	17	rendered	render	VBN
40119	590	18	easier	easy	JJR
40119	590	19	if	if	IN
40119	590	20	the	the	DT
40119	590	21	source	source	NN
40119	590	22	of	of	IN
40119	590	23	light	light	NN
40119	590	24	had	have	VBD
40119	590	25	a	a	DT
40119	590	26	more	more	RBR
40119	590	27	distinctive	distinctive	JJ
40119	590	28	and	and	CC
40119	590	29	conspicuous	conspicuous	JJ
40119	590	30	form	form	NN
40119	590	31	than	than	IN
40119	590	32	that	that	DT
40119	590	33	of	of	IN
40119	590	34	a	a	DT
40119	590	35	simple	simple	JJ
40119	590	36	circle	circle	NN
40119	590	37	.	.	.
40119	591	1	Some	some	DT
40119	591	2	experiments	experiment	NNS
40119	591	3	were	be	VBD
40119	591	4	therefore	therefore	RB
40119	591	5	made	make	VBN
40119	591	6	with	with	IN
40119	591	7	semi	semi	JJ
40119	591	8	-	-	JJ
40119	591	9	circular	circular	JJ
40119	591	10	and	and	CC
40119	591	11	triangular	triangular	JJ
40119	591	12	holes	hole	NNS
40119	591	13	,	,	,
40119	591	14	and	and	CC
40119	591	15	these	these	DT
40119	591	16	were	be	VBD
40119	591	17	in	in	IN
40119	591	18	some	some	DT
40119	591	19	respects	respect	NNS
40119	591	20	preferable	preferable	JJ
40119	591	21	;	;	:
40119	591	22	but	but	CC
40119	591	23	far	far	RB
40119	591	24	better	well	JJR
40119	591	25	results	result	NNS
40119	591	26	were	be	VBD
40119	591	27	afterwards	afterwards	RB
40119	591	28	obtained	obtain	VBN
40119	591	29	by	by	IN
40119	591	30	using	use	VBG
40119	591	31	as	as	IN
40119	591	32	a	a	DT
40119	591	33	source	source	NN
40119	591	34	of	of	IN
40119	591	35	light	light	JJ
40119	591	36	the	the	DT
40119	591	37	horse	horse	NN
40119	591	38	-	-	HYPH
40119	591	39	shoe	shoe	NN
40119	591	40	shaped	shape	VBN
40119	591	41	filament	filament	NN
40119	591	42	of	of	IN
40119	591	43	an	an	DT
40119	591	44	electric	electric	JJ
40119	591	45	lamp	lamp	NN
40119	591	46	,	,	,
40119	591	47	screened	screen	VBN
40119	591	48	by	by	IN
40119	591	49	a	a	DT
40119	591	50	coloured	coloured	JJ
40119	591	51	glass	glass	NN
40119	591	52	.	.	.
40119	592	1	When	when	WRB
40119	592	2	such	such	PDT
40119	592	3	a	a	DT
40119	592	4	lamp	lamp	NN
40119	592	5	was	be	VBD
40119	592	6	looked	look	VBN
40119	592	7	at	at	IN
40119	592	8	through	through	IN
40119	592	9	a	a	DT
40119	592	10	lens	lens	NN
40119	592	11	,	,	,
40119	592	12	concave	concave	NNP
40119	592	13	or	or	CC
40119	592	14	convex	convex	NNP
40119	592	15	,	,	,
40119	592	16	of	of	IN
40119	592	17	about	about	RB
40119	592	18	six	six	CD
40119	592	19	inches	inch	NNS
40119	592	20	focus	focus	VBP
40119	592	21	,	,	,
40119	592	22	from	from	IN
40119	592	23	a	a	DT
40119	592	24	distance	distance	NN
40119	592	25	of	of	IN
40119	592	26	a	a	DT
40119	592	27	few	few	JJ
40119	592	28	feet	foot	NNS
40119	592	29	,	,	,
40119	592	30	the	the	DT
40119	592	31	roughly	roughly	RB
40119	592	32	oval	oval	JJ
40119	592	33	patch	patch	NN
40119	592	34	of	of	IN
40119	592	35	luminosity	luminosity	NN
40119	592	36	formed	form	VBN
40119	592	37	upon	upon	IN
40119	592	38	the	the	DT
40119	592	39	retina	retina	NNP
40119	592	40	,	,	,
40119	592	41	instead	instead	RB
40119	592	42	of	of	IN
40119	592	43	being	be	VBG
40119	592	44	a	a	DT
40119	592	45	mere	mere	JJ
40119	592	46	ill	ill	RB
40119	592	47	-	-	HYPH
40119	592	48	defined	define	VBN
40119	592	49	blur	blur	NN
40119	592	50	,	,	,
40119	592	51	such	such	JJ
40119	592	52	as	as	IN
40119	592	53	would	would	MD
40119	592	54	be	be	VB
40119	592	55	produced	produce	VBN
40119	592	56	if	if	IN
40119	592	57	the	the	DT
40119	592	58	transparent	transparent	JJ
40119	592	59	media	medium	NNS
40119	592	60	of	of	IN
40119	592	61	the	the	DT
40119	592	62	eye	eye	NN
40119	592	63	were	be	VBD
40119	592	64	composed	compose	VBN
40119	592	65	of	of	IN
40119	592	66	homogeneous	homogeneous	JJ
40119	592	67	substances	substance	NNS
40119	592	68	like	like	IN
40119	592	69	glass	glass	NN
40119	592	70	or	or	CC
40119	592	71	water	water	NN
40119	592	72	,	,	,
40119	592	73	appeared	appear	VBD
40119	592	74	to	to	TO
40119	592	75	be	be	VB
40119	592	76	made	make	VBN
40119	592	77	up	up	RP
40119	592	78	of	of	IN
40119	592	79	a	a	DT
40119	592	80	crowd	crowd	NN
40119	592	81	of	of	IN
40119	592	82	separate	separate	JJ
40119	592	83	images	image	NNS
40119	592	84	of	of	IN
40119	592	85	the	the	DT
40119	592	86	filament	filament	NN
40119	592	87	,	,	,
40119	592	88	some	some	DT
40119	592	89	being	be	VBG
40119	592	90	brighter	bright	JJR
40119	592	91	than	than	IN
40119	592	92	others	other	NNS
40119	592	93	,	,	,
40119	592	94	as	as	IN
40119	592	95	is	be	VBZ
40119	592	96	shown	show	VBN
40119	592	97	in	in	IN
40119	592	98	the	the	DT
40119	592	99	diagram	diagram	NN
40119	592	100	Fig	Fig	NNP
40119	592	101	.	.	.
40119	593	1	23	23	CD
40119	593	2	.	.	.
40119	594	1	[	[	-LRB-
40119	594	2	Illustration	illustration	NN
40119	594	3	:	:	:
40119	594	4	_	_	NNP
40119	594	5	Fig	Fig	NNP
40119	594	6	.	.	.
40119	595	1	24A.--Images	24a.--images	CD
40119	595	2	with	with	IN
40119	595	3	horizontal	horizontal	JJ
40119	595	4	Slit	Slit	NNP
40119	595	5	.	.	.
40119	595	6	_	_	NNP
40119	595	7	]	]	-RRB-
40119	595	8	[	[	-LRB-
40119	595	9	Illustration	illustration	NN
40119	595	10	:	:	:
40119	595	11	_	_	NNP
40119	595	12	Fig	Fig	NNP
40119	595	13	.	.	.
40119	596	1	24B.--Images	24b.--images	CD
40119	596	2	with	with	IN
40119	596	3	vertical	vertical	JJ
40119	596	4	Slit	Slit	NNP
40119	596	5	.	.	.
40119	596	6	_	_	NNP
40119	596	7	]	]	-RRB-
40119	596	8	If	if	IN
40119	596	9	a	a	DT
40119	596	10	spectroscope	spectroscope	NN
40119	596	11	slit	slit	NN
40119	596	12	was	be	VBD
40119	596	13	interposed	interpose	VBN
40119	596	14	between	between	IN
40119	596	15	the	the	DT
40119	596	16	eye	eye	NN
40119	596	17	and	and	CC
40119	596	18	the	the	DT
40119	596	19	lens	lens	NN
40119	596	20	,	,	,
40119	596	21	and	and	CC
40119	596	22	its	-PRON-	PRP$
40119	596	23	width	width	NN
40119	596	24	suitably	suitably	RB
40119	596	25	adjusted	adjust	VBN
40119	596	26	,	,	,
40119	596	27	only	only	RB
40119	596	28	a	a	DT
40119	596	29	single	single	JJ
40119	596	30	row	row	NN
40119	596	31	of	of	IN
40119	596	32	filaments	filament	NNS
40119	596	33	was	be	VBD
40119	596	34	observed	observe	VBN
40119	596	35	,	,	,
40119	596	36	the	the	DT
40119	596	37	appearances	appearance	NNS
40119	596	38	with	with	IN
40119	596	39	the	the	DT
40119	596	40	slit	slit	NN
40119	596	41	in	in	IN
40119	596	42	horizontal	horizontal	JJ
40119	596	43	,	,	,
40119	596	44	vertical	vertical	JJ
40119	596	45	,	,	,
40119	596	46	and	and	CC
40119	596	47	intermediate	intermediate	JJ
40119	596	48	positions	position	NNS
40119	596	49	being	be	VBG
40119	596	50	as	as	RB
40119	596	51	represented	represent	VBN
40119	596	52	in	in	IN
40119	596	53	Fig	Fig	NNP
40119	596	54	.	.	.
40119	597	1	24	24	CD
40119	597	2	,	,	,
40119	597	3	A	a	NN
40119	597	4	,	,	,
40119	597	5	B	B	NNP
40119	597	6	,	,	,
40119	597	7	C.	C.	NNP
40119	597	8	As	as	IN
40119	597	9	before	before	RB
40119	597	10	,	,	,
40119	597	11	it	-PRON-	PRP
40119	597	12	was	be	VBD
40119	597	13	found	find	VBN
40119	597	14	possible	possible	JJ
40119	597	15	by	by	IN
40119	597	16	gradually	gradually	RB
40119	597	17	retiring	retire	VBG
40119	597	18	from	from	IN
40119	597	19	the	the	DT
40119	597	20	lamp	lamp	NN
40119	597	21	to	to	TO
40119	597	22	bring	bring	VB
40119	597	23	the	the	DT
40119	597	24	number	number	NN
40119	597	25	of	of	IN
40119	597	26	images	image	NNS
40119	597	27	up	up	IN
40119	597	28	to	to	IN
40119	597	29	about	about	RB
40119	597	30	twenty	twenty	CD
40119	597	31	-	-	HYPH
40119	597	32	five	five	CD
40119	597	33	,	,	,
40119	597	34	but	but	CC
40119	597	35	attentive	attentive	JJ
40119	597	36	examination	examination	NN
40119	597	37	showed	show	VBD
40119	597	38	that	that	IN
40119	597	39	most	most	JJS
40119	597	40	of	of	IN
40119	597	41	these	these	DT
40119	597	42	really	really	RB
40119	597	43	consisted	consist	VBD
40119	597	44	of	of	IN
40119	597	45	clusters	cluster	NNS
40119	597	46	,	,	,
40119	597	47	each	each	DT
40119	597	48	composed	compose	VBN
40119	597	49	of	of	IN
40119	597	50	perhaps	perhaps	RB
40119	597	51	fifteen	fifteen	CD
40119	597	52	or	or	CC
40119	597	53	twenty	twenty	CD
40119	597	54	confused	confused	JJ
40119	597	55	images	image	NNS
40119	597	56	of	of	IN
40119	597	57	the	the	DT
40119	597	58	filament	filament	NN
40119	597	59	.	.	.
40119	598	1	A	a	DT
40119	598	2	stronger	strong	JJR
40119	598	3	lens	lens	NN
40119	598	4	still	still	RB
40119	598	5	further	further	RB
40119	598	6	separated	separate	VBD
40119	598	7	the	the	DT
40119	598	8	constituents	constituent	NNS
40119	598	9	of	of	IN
40119	598	10	the	the	DT
40119	598	11	clusters	cluster	NNS
40119	598	12	,	,	,
40119	598	13	exhibiting	exhibit	VBG
40119	598	14	a	a	DT
40119	598	15	total	total	JJ
40119	598	16	number	number	NN
40119	598	17	of	of	IN
40119	598	18	indistinctly	indistinctly	RB
40119	598	19	seen	see	VBN
40119	598	20	images	image	NNS
40119	598	21	which	which	WDT
40119	598	22	was	be	VBD
40119	598	23	estimated	estimate	VBN
40119	598	24	to	to	TO
40119	598	25	amount	amount	VB
40119	598	26	to	to	IN
40119	598	27	nearly	nearly	RB
40119	598	28	five	five	CD
40119	598	29	hundred	hundred	CD
40119	598	30	.	.	.
40119	599	1	Assuming	assume	VBG
40119	599	2	the	the	DT
40119	599	3	diameter	diameter	NN
40119	599	4	of	of	IN
40119	599	5	the	the	DT
40119	599	6	pupil	pupil	NN
40119	599	7	of	of	IN
40119	599	8	the	the	DT
40119	599	9	eye	eye	NN
40119	599	10	to	to	TO
40119	599	11	be	be	VB
40119	599	12	one	one	CD
40119	599	13	-	-	HYPH
40119	599	14	fifth	fifth	NN
40119	599	15	of	of	IN
40119	599	16	an	an	DT
40119	599	17	inch	inch	NN
40119	599	18	,	,	,
40119	599	19	these	these	DT
40119	599	20	observations	observation	NNS
40119	599	21	seem	seem	VBP
40119	599	22	to	to	TO
40119	599	23	indicate	indicate	VB
40119	599	24	as	as	IN
40119	599	25	a	a	DT
40119	599	26	cause	cause	NN
40119	599	27	of	of	IN
40119	599	28	the	the	DT
40119	599	29	phenomenon	phenomenon	NN
40119	599	30	some	some	DT
40119	599	31	fairly	fairly	RB
40119	599	32	regular	regular	JJ
40119	599	33	anatomical	anatomical	JJ
40119	599	34	structure	structure	NN
40119	599	35	,	,	,
40119	599	36	situated	situate	VBN
40119	599	37	in	in	IN
40119	599	38	or	or	CC
40119	599	39	near	near	IN
40119	599	40	the	the	DT
40119	599	41	crystalline	crystalline	JJ
40119	599	42	lens	lens	NN
40119	599	43	and	and	CC
40119	599	44	composed	compose	VBN
40119	599	45	of	of	IN
40119	599	46	elements	element	NNS
40119	599	47	measuring	measure	VBG
40119	599	48	about	about	IN
40119	599	49	1/2000	1/2000	CD
40119	599	50	inch	inch	NN
40119	599	51	in	in	IN
40119	599	52	length	length	NN
40119	599	53	or	or	CC
40119	599	54	breadth	breadth	NN
40119	599	55	.	.	.
40119	600	1	Whether	whether	IN
40119	600	2	the	the	DT
40119	600	3	structure	structure	NN
40119	600	4	which	which	WDT
40119	600	5	gives	give	VBZ
40119	600	6	rise	rise	NN
40119	600	7	to	to	IN
40119	600	8	these	these	DT
40119	600	9	multiple	multiple	JJ
40119	600	10	images	image	NNS
40119	600	11	is	be	VBZ
40119	600	12	to	to	TO
40119	600	13	be	be	VB
40119	600	14	found	find	VBN
40119	600	15	in	in	IN
40119	600	16	the	the	DT
40119	600	17	fibres	fibre	NNS
40119	600	18	of	of	IN
40119	600	19	the	the	DT
40119	600	20	crystalline	crystalline	JJ
40119	600	21	lens	lens	NN
40119	600	22	itself	-PRON-	PRP
40119	600	23	,	,	,
40119	600	24	or	or	CC
40119	600	25	in	in	IN
40119	600	26	the	the	DT
40119	600	27	membranes	membrane	NNS
40119	600	28	which	which	WDT
40119	600	29	cover	cover	VBP
40119	600	30	it	-PRON-	PRP
40119	600	31	,	,	,
40119	600	32	is	be	VBZ
40119	600	33	a	a	DT
40119	600	34	question	question	NN
40119	600	35	upon	upon	IN
40119	600	36	which	which	WDT
40119	600	37	I	-PRON-	PRP
40119	600	38	will	will	MD
40119	600	39	not	not	RB
40119	600	40	venture	venture	VB
40119	600	41	an	an	DT
40119	600	42	opinion	opinion	NN
40119	600	43	.	.	.
40119	601	1	[	[	-LRB-
40119	601	2	Illustration	illustration	NN
40119	601	3	:	:	:
40119	601	4	_	_	NNP
40119	601	5	Fig	Fig	NNP
40119	601	6	.	.	.
40119	602	1	24C.--Images	24c.--images	CD
40119	602	2	with	with	IN
40119	602	3	oblique	oblique	JJ
40119	602	4	Slit	Slit	NNP
40119	602	5	.	.	.
40119	602	6	_	_	NNP
40119	602	7	]	]	-RRB-
40119	602	8	It	-PRON-	PRP
40119	602	9	is	be	VBZ
40119	602	10	indeed	indeed	RB
40119	602	11	wonderful	wonderful	JJ
40119	602	12	that	that	IN
40119	602	13	an	an	DT
40119	602	14	organ	organ	NN
40119	602	15	affected	affect	VBN
40119	602	16	by	by	IN
40119	602	17	peculiarities	peculiarity	NNS
40119	602	18	of	of	IN
40119	602	19	which	which	WDT
40119	602	20	those	those	DT
40119	602	21	that	that	WDT
40119	602	22	have	have	VBP
40119	602	23	been	be	VBN
40119	602	24	referred	refer	VBN
40119	602	25	to	to	TO
40119	602	26	are	be	VBP
40119	602	27	merely	merely	RB
40119	602	28	specimens	specimen	NNS
40119	602	29	,	,	,
40119	602	30	should	should	MD
40119	602	31	give	give	VB
40119	602	32	such	such	JJ
40119	602	33	well	well	RB
40119	602	34	-	-	HYPH
40119	602	35	defined	define	VBN
40119	602	36	pictures	picture	NNS
40119	602	37	as	as	IN
40119	602	38	it	-PRON-	PRP
40119	602	39	does	do	VBZ
40119	602	40	when	when	WRB
40119	602	41	accommodated	accommodate	VBN
40119	602	42	for	for	IN
40119	602	43	the	the	DT
40119	602	44	objects	object	NNS
40119	602	45	looked	look	VBD
40119	602	46	at	at	IN
40119	602	47	.	.	.
40119	603	1	CHAPTER	CHAPTER	NNP
40119	603	2	IV	IV	NNP
40119	603	3	.	.	.
40119	604	1	SOME	some	DT
40119	604	2	OPTICAL	optical	NN
40119	604	3	ILLUSIONS	illusion	NNS
40119	604	4	.	.	.
40119	605	1	Optical	optical	JJ
40119	605	2	illusions	illusion	NNS
40119	605	3	generally	generally	RB
40119	605	4	result	result	VBP
40119	605	5	from	from	IN
40119	605	6	the	the	DT
40119	605	7	mind	mind	NN
40119	605	8	's	's	POS
40119	605	9	faulty	faulty	JJ
40119	605	10	interpretation	interpretation	NN
40119	605	11	of	of	IN
40119	605	12	phenomena	phenomenon	NNS
40119	605	13	presented	present	VBN
40119	605	14	to	to	IN
40119	605	15	it	-PRON-	PRP
40119	605	16	through	through	IN
40119	605	17	the	the	DT
40119	605	18	medium	medium	NN
40119	605	19	of	of	IN
40119	605	20	the	the	DT
40119	605	21	visual	visual	JJ
40119	605	22	organs	organ	NNS
40119	605	23	.	.	.
40119	606	1	They	-PRON-	PRP
40119	606	2	are	be	VBP
40119	606	3	of	of	IN
40119	606	4	many	many	JJ
40119	606	5	different	different	JJ
40119	606	6	kinds	kind	NNS
40119	606	7	,	,	,
40119	606	8	but	but	CC
40119	606	9	a	a	DT
40119	606	10	large	large	JJ
40119	606	11	class	class	NN
40119	606	12	,	,	,
40119	606	13	which	which	WDT
40119	606	14	at	at	IN
40119	606	15	first	first	JJ
40119	606	16	sight	sight	NN
40119	606	17	may	may	MD
40119	606	18	seem	seem	VB
40119	606	19	to	to	TO
40119	606	20	have	have	VB
40119	606	21	little	little	JJ
40119	606	22	or	or	CC
40119	606	23	nothing	nothing	NN
40119	606	24	in	in	IN
40119	606	25	common	common	JJ
40119	606	26	,	,	,
40119	606	27	arise	arise	VB
40119	606	28	,	,	,
40119	606	29	I	-PRON-	PRP
40119	606	30	believe	believe	VBP
40119	606	31	,	,	,
40119	606	32	from	from	IN
40119	606	33	a	a	DT
40119	606	34	single	single	JJ
40119	606	35	cause	cause	NN
40119	606	36	,	,	,
40119	606	37	namely	namely	RB
40119	606	38	,	,	,
40119	606	39	the	the	DT
40119	606	40	inability	inability	NN
40119	606	41	of	of	IN
40119	606	42	the	the	DT
40119	606	43	mind	mind	NN
40119	606	44	to	to	TO
40119	606	45	form	form	VB
40119	606	46	and	and	CC
40119	606	47	adhere	adhere	VB
40119	606	48	to	to	IN
40119	606	49	a	a	DT
40119	606	50	definite	definite	JJ
40119	606	51	scale	scale	NN
40119	606	52	or	or	CC
40119	606	53	standard	standard	NN
40119	606	54	of	of	IN
40119	606	55	measurement	measurement	NN
40119	606	56	.	.	.
40119	607	1	In	in	IN
40119	607	2	specifying	specify	VBG
40119	607	3	quantities	quantity	NNS
40119	607	4	and	and	CC
40119	607	5	qualities	quality	NNS
40119	607	6	by	by	IN
40119	607	7	physical	physical	JJ
40119	607	8	methods	method	NNS
40119	607	9	,	,	,
40119	607	10	the	the	DT
40119	607	11	standards	standard	NNS
40119	607	12	of	of	IN
40119	607	13	reference	reference	NN
40119	607	14	that	that	WDT
40119	607	15	we	-PRON-	PRP
40119	607	16	employ	employ	VBP
40119	607	17	are	be	VBP
40119	607	18	invariable	invariable	JJ
40119	607	19	.	.	.
40119	608	1	We	-PRON-	PRP
40119	608	2	may	may	MD
40119	608	3	,	,	,
40119	608	4	for	for	IN
40119	608	5	example	example	NN
40119	608	6	,	,	,
40119	608	7	measure	measure	VB
40119	608	8	a	a	DT
40119	608	9	length	length	NN
40119	608	10	by	by	IN
40119	608	11	reference	reference	NN
40119	608	12	to	to	IN
40119	608	13	a	a	DT
40119	608	14	rule	rule	NN
40119	608	15	,	,	,
40119	608	16	an	an	DT
40119	608	17	interval	interval	NN
40119	608	18	of	of	IN
40119	608	19	time	time	NN
40119	608	20	by	by	IN
40119	608	21	a	a	DT
40119	608	22	clock	clock	NN
40119	608	23	,	,	,
40119	608	24	a	a	DT
40119	608	25	mass	mass	NN
40119	608	26	or	or	CC
40119	608	27	weight	weight	NN
40119	608	28	by	by	IN
40119	608	29	comparison	comparison	NN
40119	608	30	with	with	IN
40119	608	31	standardised	standardised	JJ
40119	608	32	lumps	lump	NNS
40119	608	33	of	of	IN
40119	608	34	metal	metal	NN
40119	608	35	,	,	,
40119	608	36	and	and	CC
40119	608	37	in	in	IN
40119	608	38	all	all	DT
40119	608	39	such	such	JJ
40119	608	40	cases	case	NNS
40119	608	41	--	--	:
40119	608	42	provided	provide	VBN
40119	608	43	that	that	IN
40119	608	44	our	-PRON-	PRP$
40119	608	45	instruments	instrument	NNS
40119	608	46	are	be	VBP
40119	608	47	good	good	JJ
40119	608	48	ones	one	NNS
40119	608	49	and	and	CC
40119	608	50	skilfully	skilfully	RB
40119	608	51	used	use	VBN
40119	608	52	--	--	:
40119	608	53	we	-PRON-	PRP
40119	608	54	have	have	VBP
40119	608	55	every	every	DT
40119	608	56	confidence	confidence	NN
40119	608	57	in	in	IN
40119	608	58	the	the	DT
40119	608	59	constancy	constancy	NN
40119	608	60	and	and	CC
40119	608	61	uniformity	uniformity	NN
40119	608	62	of	of	IN
40119	608	63	our	-PRON-	PRP$
40119	608	64	results	result	NNS
40119	608	65	.	.	.
40119	609	1	But	but	CC
40119	609	2	two	two	CD
40119	609	3	lengths	length	NNS
40119	609	4	,	,	,
40119	609	5	which	which	WDT
40119	609	6	when	when	WRB
40119	609	7	tested	test	VBN
40119	609	8	with	with	IN
40119	609	9	the	the	DT
40119	609	10	same	same	JJ
40119	609	11	foot	foot	NN
40119	609	12	rule	rule	NN
40119	609	13	are	be	VBP
40119	609	14	found	find	VBN
40119	609	15	to	to	TO
40119	609	16	be	be	VB
40119	609	17	exactly	exactly	RB
40119	609	18	equal	equal	JJ
40119	609	19	,	,	,
40119	609	20	are	be	VBP
40119	609	21	not	not	RB
40119	609	22	necessarily	necessarily	RB
40119	609	23	equal	equal	JJ
40119	609	24	in	in	IN
40119	609	25	the	the	DT
40119	609	26	estimate	estimate	NN
40119	609	27	formed	form	VBN
40119	609	28	of	of	IN
40119	609	29	them	-PRON-	PRP
40119	609	30	by	by	IN
40119	609	31	the	the	DT
40119	609	32	mind	mind	NN
40119	609	33	.	.	.
40119	610	1	Look	look	VB
40119	610	2	,	,	,
40119	610	3	for	for	IN
40119	610	4	instance	instance	NN
40119	610	5	,	,	,
40119	610	6	at	at	IN
40119	610	7	the	the	DT
40119	610	8	two	two	CD
40119	610	9	lines	line	NNS
40119	610	10	in	in	IN
40119	610	11	Fig	Fig	NNP
40119	610	12	.	.	.
40119	611	1	25	25	CD
40119	611	2	.	.	.
40119	612	1	According	accord	VBG
40119	612	2	to	to	IN
40119	612	3	the	the	DT
40119	612	4	foot	foot	NN
40119	612	5	rule	rule	VB
40119	612	6	each	each	DT
40119	612	7	of	of	IN
40119	612	8	them	-PRON-	PRP
40119	612	9	is	be	VBZ
40119	612	10	just	just	RB
40119	612	11	one	one	CD
40119	612	12	inch	inch	NN
40119	612	13	in	in	IN
40119	612	14	length	length	NN
40119	612	15	,	,	,
40119	612	16	but	but	CC
40119	612	17	the	the	DT
40119	612	18	mind	mind	NN
40119	612	19	unhesitatingly	unhesitatingly	RB
40119	612	20	pronounces	pronounce	VBZ
40119	612	21	the	the	DT
40119	612	22	upright	upright	JJ
40119	612	23	one	one	NN
40119	612	24	to	to	TO
40119	612	25	be	be	VB
40119	612	26	considerably	considerably	RB
40119	612	27	longer	long	JJR
40119	612	28	than	than	IN
40119	612	29	the	the	DT
40119	612	30	other	other	JJ
40119	612	31	;	;	:
40119	612	32	the	the	DT
40119	612	33	standard	standard	NN
40119	612	34	which	which	WDT
40119	612	35	it	-PRON-	PRP
40119	612	36	applies	apply	VBZ
40119	612	37	is	be	VBZ
40119	612	38	not	not	RB
40119	612	39	,	,	,
40119	612	40	like	like	IN
40119	612	41	a	a	DT
40119	612	42	physical	physical	JJ
40119	612	43	one	one	NN
40119	612	44	,	,	,
40119	612	45	identical	identical	JJ
40119	612	46	in	in	IN
40119	612	47	the	the	DT
40119	612	48	two	two	CD
40119	612	49	cases	case	NNS
40119	612	50	.	.	.
40119	613	1	Many	many	JJ
40119	613	2	other	other	JJ
40119	613	3	examples	example	NNS
40119	613	4	might	may	MD
40119	613	5	be	be	VB
40119	613	6	cited	cite	VBN
40119	613	7	illustrative	illustrative	JJ
40119	613	8	of	of	IN
40119	613	9	the	the	DT
40119	613	10	general	general	JJ
40119	613	11	uncertainty	uncertainty	NN
40119	613	12	of	of	IN
40119	613	13	mental	mental	JJ
40119	613	14	estimates	estimate	NNS
40119	613	15	.	.	.
40119	614	1	[	[	-LRB-
40119	614	2	Illustration	illustration	NN
40119	614	3	:	:	:
40119	614	4	_	_	NNP
40119	614	5	Fig	Fig	NNP
40119	614	6	.	.	.
40119	615	1	25.--Illusion	25.--illusion	CD
40119	615	2	of	of	IN
40119	615	3	Length	Length	NNP
40119	615	4	.	.	.
40119	615	5	_	_	NNP
40119	615	6	]	]	-RRB-
40119	615	7	The	the	DT
40119	615	8	variation	variation	NN
40119	615	9	of	of	IN
40119	615	10	the	the	DT
40119	615	11	vague	vague	JJ
40119	615	12	mental	mental	JJ
40119	615	13	standard	standard	NN
40119	615	14	which	which	WDT
40119	615	15	we	-PRON-	PRP
40119	615	16	unconsciously	unconsciously	RB
40119	615	17	employ	employ	VBP
40119	615	18	seems	seem	VBZ
40119	615	19	to	to	TO
40119	615	20	be	be	VB
40119	615	21	governed	govern	VBN
40119	615	22	by	by	IN
40119	615	23	a	a	DT
40119	615	24	law	law	NN
40119	615	25	of	of	IN
40119	615	26	very	very	RB
40119	615	27	wide	wide	JJ
40119	615	28	if	if	IN
40119	615	29	not	not	RB
40119	615	30	universal	universal	JJ
40119	615	31	application	application	NN
40119	615	32	.	.	.
40119	616	1	Though	though	IN
40119	616	2	this	this	DT
40119	616	3	law	law	NN
40119	616	4	is	be	VBZ
40119	616	5	in	in	IN
40119	616	6	itself	-PRON-	PRP
40119	616	7	simple	simple	JJ
40119	616	8	and	and	CC
40119	616	9	intelligible	intelligible	JJ
40119	616	10	enough	enough	RB
40119	616	11	,	,	,
40119	616	12	it	-PRON-	PRP
40119	616	13	can	can	MD
40119	616	14	not	not	RB
40119	616	15	easily	easily	RB
40119	616	16	be	be	VB
40119	616	17	formulated	formulate	VBN
40119	616	18	in	in	IN
40119	616	19	terms	term	NNS
40119	616	20	of	of	IN
40119	616	21	adequate	adequate	JJ
40119	616	22	generality	generality	NN
40119	616	23	.	.	.
40119	617	1	The	the	DT
40119	617	2	best	good	JJS
40119	617	3	result	result	NN
40119	617	4	of	of	IN
40119	617	5	my	-PRON-	PRP$
40119	617	6	efforts	effort	NNS
40119	617	7	is	be	VBZ
40119	617	8	the	the	DT
40119	617	9	following	follow	VBG
40119	617	10	unwieldy	unwieldy	JJ
40119	617	11	statement:--The	statement:--the	JJ
40119	617	12	mental	mental	JJ
40119	617	13	standard	standard	NN
40119	617	14	which	which	WDT
40119	617	15	is	be	VBZ
40119	617	16	applied	apply	VBN
40119	617	17	in	in	IN
40119	617	18	the	the	DT
40119	617	19	estimation	estimation	NN
40119	617	20	of	of	IN
40119	617	21	a	a	DT
40119	617	22	quality	quality	NN
40119	617	23	or	or	CC
40119	617	24	a	a	DT
40119	617	25	condition	condition	NN
40119	617	26	tends	tend	VBZ
40119	617	27	to	to	TO
40119	617	28	assimilate	assimilate	VB
40119	617	29	itself	-PRON-	PRP
40119	617	30	,	,	,
40119	617	31	as	as	IN
40119	617	32	regards	regard	VBZ
40119	617	33	the	the	DT
40119	617	34	quality	quality	NN
40119	617	35	or	or	CC
40119	617	36	condition	condition	NN
40119	617	37	in	in	IN
40119	617	38	question	question	NN
40119	617	39	,	,	,
40119	617	40	to	to	IN
40119	617	41	the	the	DT
40119	617	42	object	object	NN
40119	617	43	or	or	CC
40119	617	44	other	other	JJ
40119	617	45	entity	entity	NN
40119	617	46	under	under	IN
40119	617	47	comparison	comparison	NN
40119	617	48	of	of	IN
40119	617	49	which	which	WDT
40119	617	50	the	the	DT
40119	617	51	same	same	JJ
40119	617	52	(	(	-LRB-
40119	617	53	quality	quality	NN
40119	617	54	or	or	CC
40119	617	55	condition	condition	NN
40119	617	56	)	)	-RRB-
40119	617	57	is	be	VBZ
40119	617	58	an	an	DT
40119	617	59	attribute	attribute	NN
40119	617	60	.	.	.
40119	618	1	In	in	IN
40119	618	2	plainer	plainer	NN
40119	618	3	but	but	CC
40119	618	4	less	less	RBR
40119	618	5	precise	precise	JJ
40119	618	6	language	language	NN
40119	618	7	,	,	,
40119	618	8	there	there	EX
40119	618	9	is	be	VBZ
40119	618	10	a	a	DT
40119	618	11	disposition	disposition	NN
40119	618	12	to	to	TO
40119	618	13	minimise	minimise	VB
40119	618	14	extremes	extreme	NNS
40119	618	15	of	of	IN
40119	618	16	whatever	whatever	WDT
40119	618	17	kind	kind	NN
40119	618	18	;	;	:
40119	618	19	to	to	TO
40119	618	20	underestimate	underestimate	VB
40119	618	21	any	any	DT
40119	618	22	deviation	deviation	NN
40119	618	23	from	from	IN
40119	618	24	a	a	DT
40119	618	25	mean	mean	JJ
40119	618	26	or	or	CC
40119	618	27	average	average	JJ
40119	618	28	state	state	NN
40119	618	29	of	of	IN
40119	618	30	things	thing	NNS
40119	618	31	,	,	,
40119	618	32	and	and	CC
40119	618	33	consequently	consequently	RB
40119	618	34	to	to	TO
40119	618	35	vary	vary	VB
40119	618	36	our	-PRON-	PRP$
40119	618	37	conception	conception	NN
40119	618	38	of	of	IN
40119	618	39	the	the	DT
40119	618	40	mean	mean	JJ
40119	618	41	or	or	CC
40119	618	42	standard	standard	JJ
40119	618	43	condition	condition	NN
40119	618	44	in	in	IN
40119	618	45	such	such	PDT
40119	618	46	a	a	DT
40119	618	47	manner	manner	NN
40119	618	48	that	that	IN
40119	618	49	the	the	DT
40119	618	50	deviation	deviation	NN
40119	618	51	from	from	IN
40119	618	52	it	-PRON-	PRP
40119	618	53	which	which	WDT
40119	618	54	is	be	VBZ
40119	618	55	presented	present	VBN
40119	618	56	to	to	IN
40119	618	57	our	-PRON-	PRP$
40119	618	58	notice	notice	NN
40119	618	59	in	in	IN
40119	618	60	any	any	DT
40119	618	61	particular	particular	JJ
40119	618	62	instance	instance	NN
40119	618	63	may	may	MD
40119	618	64	seem	seem	VB
40119	618	65	to	to	TO
40119	618	66	be	be	VB
40119	618	67	small	small	JJ
40119	618	68	rather	rather	RB
40119	618	69	than	than	IN
40119	618	70	large	large	JJ
40119	618	71	.	.	.
40119	619	1	Thus	thus	RB
40119	619	2	,	,	,
40119	619	3	when	when	WRB
40119	619	4	we	-PRON-	PRP
40119	619	5	look	look	VBP
40119	619	6	at	at	IN
40119	619	7	a	a	DT
40119	619	8	thing	thing	NN
40119	619	9	which	which	WDT
40119	619	10	impresses	impress	VBZ
40119	619	11	us	-PRON-	PRP
40119	619	12	as	as	IN
40119	619	13	being	be	VBG
40119	619	14	long	long	JJ
40119	619	15	or	or	CC
40119	619	16	tall	tall	JJ
40119	619	17	,	,	,
40119	619	18	the	the	DT
40119	619	19	mental	mental	JJ
40119	619	20	standard	standard	NN
40119	619	21	of	of	IN
40119	619	22	length	length	NN
40119	619	23	is	be	VBZ
40119	619	24	at	at	IN
40119	619	25	once	once	RB
40119	619	26	increased	increase	VBN
40119	619	27	.	.	.
40119	620	1	It	-PRON-	PRP
40119	620	2	is	be	VBZ
40119	620	3	as	as	IN
40119	620	4	if	if	IN
40119	620	5	,	,	,
40119	620	6	in	in	IN
40119	620	7	making	make	VBG
40119	620	8	a	a	DT
40119	620	9	physical	physical	JJ
40119	620	10	measurement	measurement	NN
40119	620	11	,	,	,
40119	620	12	our	-PRON-	PRP$
40119	620	13	foot	foot	NN
40119	620	14	rule	rule	NN
40119	620	15	were	be	VBD
40119	620	16	automatically	automatically	RB
40119	620	17	to	to	TO
40119	620	18	add	add	VB
40119	620	19	some	some	DT
40119	620	20	inches	inch	NNS
40119	620	21	to	to	IN
40119	620	22	its	-PRON-	PRP$
40119	620	23	length	length	NN
40119	620	24	,	,	,
40119	620	25	while	while	IN
40119	620	26	still	still	RB
40119	620	27	supposed	suppose	VBN
40119	620	28	to	to	TO
40119	620	29	represent	represent	VB
40119	620	30	a	a	DT
40119	620	31	standard	standard	JJ
40119	620	32	foot	foot	NN
40119	620	33	:	:	:
40119	620	34	clearly	clearly	RB
40119	620	35	anything	anything	NN
40119	620	36	measured	measure	VBN
40119	620	37	by	by	IN
40119	620	38	means	mean	NNS
40119	620	39	of	of	IN
40119	620	40	the	the	DT
40119	620	41	augmented	augment	VBN
40119	620	42	rule	rule	NN
40119	620	43	would	would	MD
40119	620	44	seem	seem	VB
40119	620	45	to	to	TO
40119	620	46	contain	contain	VB
40119	620	47	a	a	DT
40119	620	48	fewer	few	JJR
40119	620	49	number	number	NN
40119	620	50	of	of	IN
40119	620	51	feet	foot	NNS
40119	620	52	,	,	,
40119	620	53	and	and	CC
40119	620	54	,	,	,
40119	620	55	therefore	therefore	RB
40119	620	56	,	,	,
40119	620	57	to	to	TO
40119	620	58	be	be	VB
40119	620	59	shorter	short	JJR
40119	620	60	than	than	IN
40119	620	61	if	if	IN
40119	620	62	the	the	DT
40119	620	63	rule	rule	NN
40119	620	64	had	have	VBD
40119	620	65	not	not	RB
40119	620	66	undergone	undergo	VBN
40119	620	67	a	a	DT
40119	620	68	change	change	NN
40119	620	69	.	.	.
40119	621	1	It	-PRON-	PRP
40119	621	2	is	be	VBZ
40119	621	3	not	not	RB
40119	621	4	an	an	DT
40119	621	5	uncommon	uncommon	JJ
40119	621	6	thing	thing	NN
40119	621	7	for	for	IN
40119	621	8	people	people	NNS
40119	621	9	visiting	visit	VBG
40119	621	10	Switzerland	Switzerland	NNP
40119	621	11	for	for	IN
40119	621	12	the	the	DT
40119	621	13	first	first	JJ
40119	621	14	time	time	NN
40119	621	15	to	to	TO
40119	621	16	express	express	VB
40119	621	17	disappointment	disappointment	NN
40119	621	18	at	at	IN
40119	621	19	the	the	DT
40119	621	20	apparently	apparently	RB
40119	621	21	small	small	JJ
40119	621	22	height	height	NN
40119	621	23	of	of	IN
40119	621	24	the	the	DT
40119	621	25	mountains	mountain	NNS
40119	621	26	.	.	.
40119	622	1	A	a	DT
40119	622	2	mountain	mountain	NN
40119	622	3	of	of	IN
40119	622	4	10,000	10,000	CD
40119	622	5	feet	foot	NNS
40119	622	6	certainly	certainly	RB
40119	622	7	does	do	VBZ
40119	622	8	not	not	RB
40119	622	9	seem	seem	VB
40119	622	10	to	to	TO
40119	622	11	be	be	VB
40119	622	12	twenty	twenty	CD
40119	622	13	times	time	NNS
40119	622	14	as	as	RB
40119	622	15	lofty	lofty	JJ
40119	622	16	as	as	IN
40119	622	17	a	a	DT
40119	622	18	hill	hill	NN
40119	622	19	of	of	IN
40119	622	20	500	500	CD
40119	622	21	.	.	.
40119	623	1	The	the	DT
40119	623	2	fact	fact	NN
40119	623	3	is	be	VBZ
40119	623	4	that	that	IN
40119	623	5	a	a	DT
40119	623	6	different	different	JJ
40119	623	7	scale	scale	NN
40119	623	8	of	of	IN
40119	623	9	measurement	measurement	NN
40119	623	10	is	be	VBZ
40119	623	11	applied	apply	VBN
40119	623	12	in	in	IN
40119	623	13	the	the	DT
40119	623	14	two	two	CD
40119	623	15	cases	case	NNS
40119	623	16	;	;	:
40119	623	17	though	though	IN
40119	623	18	the	the	DT
40119	623	19	observer	observer	NN
40119	623	20	is	be	VBZ
40119	623	21	unaware	unaware	JJ
40119	623	22	of	of	IN
40119	623	23	it	-PRON-	PRP
40119	623	24	,	,	,
40119	623	25	the	the	DT
40119	623	26	mountain	mountain	NN
40119	623	27	is	be	VBZ
40119	623	28	estimated	estimate	VBN
40119	623	29	in	in	IN
40119	623	30	terms	term	NNS
40119	623	31	of	of	IN
40119	623	32	a	a	DT
40119	623	33	larger	large	JJR
40119	623	34	unit	unit	NN
40119	623	35	than	than	IN
40119	623	36	the	the	DT
40119	623	37	hill	hill	NN
40119	623	38	.	.	.
40119	624	1	[	[	-LRB-
40119	624	2	Illustration	illustration	NN
40119	624	3	:	:	:
40119	624	4	_	_	NNP
40119	624	5	Fig	Fig	NNP
40119	624	6	.	.	.
40119	625	1	26.--Illusion	26.--illusion	CD
40119	625	2	of	of	IN
40119	625	3	Length	Length	NNP
40119	625	4	.	.	.
40119	625	5	_	_	NNP
40119	625	6	]	]	-RRB-
40119	625	7	If	if	IN
40119	625	8	we	-PRON-	PRP
40119	625	9	mentally	mentally	RB
40119	625	10	compare	compare	VBP
40119	625	11	two	two	CD
40119	625	12	adjacent	adjacent	JJ
40119	625	13	things	thing	NNS
40119	625	14	of	of	IN
40119	625	15	unequal	unequal	JJ
40119	625	16	length	length	NN
40119	625	17	,	,	,
40119	625	18	such	such	JJ
40119	625	19	as	as	IN
40119	625	20	the	the	DT
40119	625	21	two	two	CD
40119	625	22	straight	straight	JJ
40119	625	23	lines	line	NNS
40119	625	24	in	in	IN
40119	625	25	Fig	Fig	NNP
40119	625	26	.	.	.
40119	626	1	26	26	CD
40119	626	2	,	,	,
40119	626	3	there	there	EX
40119	626	4	is	be	VBZ
40119	626	5	a	a	DT
40119	626	6	tendency	tendency	NN
40119	626	7	to	to	TO
40119	626	8	regard	regard	VB
40119	626	9	the	the	DT
40119	626	10	shorter	short	JJR
40119	626	11	one	one	NN
40119	626	12	as	as	RB
40119	626	13	longer	long	JJR
40119	626	14	than	than	IN
40119	626	15	it	-PRON-	PRP
40119	626	16	would	would	MD
40119	626	17	appear	appear	VB
40119	626	18	if	if	IN
40119	626	19	seen	see	VBN
40119	626	20	alone	alone	RB
40119	626	21	,	,	,
40119	626	22	and	and	CC
40119	626	23	the	the	DT
40119	626	24	longer	long	JJR
40119	626	25	one	one	NN
40119	626	26	as	as	RB
40119	626	27	shorter	short	JJR
40119	626	28	.	.	.
40119	627	1	The	the	DT
40119	627	2	lower	low	JJR
40119	627	3	of	of	IN
40119	627	4	the	the	DT
40119	627	5	two	two	CD
40119	627	6	lines	line	NNS
40119	627	7	in	in	IN
40119	627	8	the	the	DT
40119	627	9	figure	figure	NN
40119	627	10	is	be	VBZ
40119	627	11	just	just	RB
40119	627	12	twice	twice	RB
40119	627	13	as	as	RB
40119	627	14	long	long	RB
40119	627	15	as	as	IN
40119	627	16	the	the	DT
40119	627	17	other	other	JJ
40119	627	18	,	,	,
40119	627	19	but	but	CC
40119	627	20	it	-PRON-	PRP
40119	627	21	does	do	VBZ
40119	627	22	not	not	RB
40119	627	23	look	look	VB
40119	627	24	so	so	RB
40119	627	25	;	;	:
40119	627	26	each	each	DT
40119	627	27	is	be	VBZ
40119	627	28	regarded	regard	VBN
40119	627	29	as	as	IN
40119	627	30	differing	differ	VBG
40119	627	31	less	less	JJR
40119	627	32	than	than	IN
40119	627	33	it	-PRON-	PRP
40119	627	34	really	really	RB
40119	627	35	does	do	VBZ
40119	627	36	from	from	IN
40119	627	37	an	an	DT
40119	627	38	imaginary	imaginary	JJ
40119	627	39	line	line	NN
40119	627	40	of	of	IN
40119	627	41	intermediate	intermediate	JJ
40119	627	42	length	length	NN
40119	627	43	.	.	.
40119	628	1	[	[	-LRB-
40119	628	2	Illustration	illustration	NN
40119	628	3	:	:	:
40119	628	4	_	_	NNP
40119	628	5	Fig	Fig	NNP
40119	628	6	.	.	.
40119	629	1	27.--Illusion	27.--illusion	CD
40119	629	2	of	of	IN
40119	629	3	Length	Length	NNP
40119	629	4	.	.	.
40119	629	5	_	_	NNP
40119	629	6	]	]	-RRB-
40119	629	7	Two	two	CD
40119	629	8	divergently	divergently	RB
40119	629	9	oblique	oblique	JJ
40119	629	10	lines	line	NNS
40119	629	11	attached	attach	VBN
40119	629	12	to	to	IN
40119	629	13	the	the	DT
40119	629	14	ends	end	NNS
40119	629	15	of	of	IN
40119	629	16	a	a	DT
40119	629	17	straight	straight	JJ
40119	629	18	line	line	NN
40119	629	19	as	as	IN
40119	629	20	at	at	IN
40119	629	21	A	A	NNP
40119	629	22	,	,	,
40119	629	23	Fig	Fig	NNP
40119	629	24	.	.	.
40119	630	1	27	27	CD
40119	630	2	,	,	,
40119	630	3	suggest	suggest	VBP
40119	630	4	to	to	IN
40119	630	5	the	the	DT
40119	630	6	mind	mind	NN
40119	630	7	the	the	DT
40119	630	8	idea	idea	NN
40119	630	9	of	of	IN
40119	630	10	lengths	length	NNS
40119	630	11	greater	great	JJR
40119	630	12	than	than	IN
40119	630	13	that	that	DT
40119	630	14	of	of	IN
40119	630	15	the	the	DT
40119	630	16	straight	straight	JJ
40119	630	17	line	line	NN
40119	630	18	itself	-PRON-	PRP
40119	630	19	;	;	:
40119	630	20	the	the	DT
40119	630	21	latter	latter	JJ
40119	630	22	,	,	,
40119	630	23	being	be	VBG
40119	630	24	thought	think	VBN
40119	630	25	of	of	IN
40119	630	26	as	as	IN
40119	630	27	comparatively	comparatively	RB
40119	630	28	small	small	JJ
40119	630	29	,	,	,
40119	630	30	is	be	VBZ
40119	630	31	therefore	therefore	RB
40119	630	32	estimated	estimate	VBN
40119	630	33	in	in	IN
40119	630	34	terms	term	NNS
40119	630	35	of	of	IN
40119	630	36	a	a	DT
40119	630	37	smaller	small	JJR
40119	630	38	unit	unit	NN
40119	630	39	than	than	IN
40119	630	40	would	would	MD
40119	630	41	be	be	VB
40119	630	42	employed	employ	VBN
40119	630	43	if	if	IN
40119	630	44	the	the	DT
40119	630	45	attachments	attachment	NNS
40119	630	46	were	be	VBD
40119	630	47	absent	absent	JJ
40119	630	48	,	,	,
40119	630	49	and	and	CC
40119	630	50	consequently	consequently	RB
40119	630	51	appears	appear	VBZ
40119	630	52	longer	long	RBR
40119	630	53	.	.	.
40119	631	1	If	if	IN
40119	631	2	,	,	,
40119	631	3	on	on	IN
40119	631	4	the	the	DT
40119	631	5	other	other	JJ
40119	631	6	hand	hand	NN
40119	631	7	,	,	,
40119	631	8	the	the	DT
40119	631	9	attachments	attachment	NNS
40119	631	10	are	be	VBP
40119	631	11	made	make	VBN
40119	631	12	convergent	convergent	NN
40119	631	13	,	,	,
40119	631	14	as	as	IN
40119	631	15	at	at	IN
40119	631	16	B	b	NN
40119	631	17	,	,	,
40119	631	18	shorter	short	JJR
40119	631	19	lengths	length	NNS
40119	631	20	are	be	VBP
40119	631	21	suggested	suggest	VBN
40119	631	22	;	;	:
40119	631	23	the	the	DT
40119	631	24	length	length	NN
40119	631	25	of	of	IN
40119	631	26	the	the	DT
40119	631	27	given	give	VBN
40119	631	28	line	line	NN
40119	631	29	is	be	VBZ
40119	631	30	regarded	regard	VBN
40119	631	31	as	as	IN
40119	631	32	exceeding	exceed	VBG
40119	631	33	an	an	DT
40119	631	34	average	average	NN
40119	631	35	or	or	CC
40119	631	36	mean	mean	VB
40119	631	37	;	;	:
40119	631	38	the	the	DT
40119	631	39	standard	standard	NN
40119	631	40	applied	apply	VBD
40119	631	41	in	in	IN
40119	631	42	estimating	estimate	VBG
40119	631	43	it	-PRON-	PRP
40119	631	44	is	be	VBZ
40119	631	45	accordingly	accordingly	RB
40119	631	46	increased	increase	VBN
40119	631	47	,	,	,
40119	631	48	and	and	CC
40119	631	49	the	the	DT
40119	631	50	line	line	NN
40119	631	51	is	be	VBZ
40119	631	52	made	make	VBN
40119	631	53	to	to	TO
40119	631	54	seem	seem	VB
40119	631	55	unduly	unduly	RB
40119	631	56	short	short	JJ
40119	631	57	.	.	.
40119	632	1	In	in	IN
40119	632	2	spite	spite	NN
40119	632	3	of	of	IN
40119	632	4	appearances	appearance	NNS
40119	632	5	to	to	IN
40119	632	6	the	the	DT
40119	632	7	contrary	contrary	NN
40119	632	8	,	,	,
40119	632	9	the	the	DT
40119	632	10	two	two	CD
40119	632	11	lines	line	NNS
40119	632	12	A	a	NN
40119	632	13	and	and	CC
40119	632	14	B	b	NN
40119	632	15	are	be	VBP
40119	632	16	actually	actually	RB
40119	632	17	of	of	IN
40119	632	18	the	the	DT
40119	632	19	same	same	JJ
40119	632	20	length	length	NN
40119	632	21	.	.	.
40119	633	1	By	by	IN
40119	633	2	duplicating	duplicate	VBG
40119	633	3	the	the	DT
40119	633	4	attached	attach	VBN
40119	633	5	lines	line	NNS
40119	633	6	,	,	,
40119	633	7	as	as	IN
40119	633	8	shown	show	VBN
40119	633	9	in	in	IN
40119	633	10	Fig	Fig	NNP
40119	633	11	.	.	.
40119	634	1	28	28	CD
40119	634	2	,	,	,
40119	634	3	their	-PRON-	PRP$
40119	634	4	misleading	misleading	JJ
40119	634	5	effect	effect	NN
40119	634	6	becomes	become	VBZ
40119	634	7	intensified	intensify	VBN
40119	634	8	.	.	.
40119	635	1	Here	here	RB
40119	635	2	we	-PRON-	PRP
40119	635	3	have	have	VBP
40119	635	4	a	a	DT
40119	635	5	well	well	RB
40119	635	6	-	-	HYPH
40119	635	7	known	know	VBN
40119	635	8	illusion	illusion	NN
40119	635	9	of	of	IN
40119	635	10	which	which	WDT
40119	635	11	several	several	JJ
40119	635	12	explanations	explanation	NNS
40119	635	13	have	have	VBP
40119	635	14	been	be	VBN
40119	635	15	proposed	propose	VBN
40119	635	16	.	.	.
40119	636	1	The	the	DT
40119	636	2	fallacy	fallacy	NN
40119	636	3	is	be	VBZ
40119	636	4	,	,	,
40119	636	5	I	-PRON-	PRP
40119	636	6	think	think	VBP
40119	636	7	,	,	,
40119	636	8	sufficiently	sufficiently	RB
40119	636	9	accounted	account	VBD
40119	636	10	for	for	IN
40119	636	11	by	by	IN
40119	636	12	variation	variation	NN
40119	636	13	of	of	IN
40119	636	14	the	the	DT
40119	636	15	mental	mental	JJ
40119	636	16	standard	standard	NN
40119	636	17	,	,	,
40119	636	18	in	in	IN
40119	636	19	accordance	accordance	NN
40119	636	20	with	with	IN
40119	636	21	the	the	DT
40119	636	22	law	law	NN
40119	636	23	to	to	TO
40119	636	24	which	which	WDT
40119	636	25	I	-PRON-	PRP
40119	636	26	have	have	VBP
40119	636	27	called	call	VBN
40119	636	28	attention	attention	NN
40119	636	29	.	.	.
40119	637	1	[	[	-LRB-
40119	637	2	Illustration	illustration	NN
40119	637	3	:	:	:
40119	637	4	_	_	NNP
40119	637	5	Fig	Fig	NNP
40119	637	6	.	.	.
40119	638	1	28.--Illusion	28.--illusion	CD
40119	638	2	of	of	IN
40119	638	3	Length	Length	NNP
40119	638	4	.	.	.
40119	638	5	_	_	NNP
40119	638	6	]	]	-RRB-
40119	638	7	A	a	DT
40119	638	8	number	number	NN
40119	638	9	of	of	IN
40119	638	10	other	other	JJ
40119	638	11	paradoxical	paradoxical	JJ
40119	638	12	effects	effect	NNS
40119	638	13	may	may	MD
40119	638	14	be	be	VB
40119	638	15	referred	refer	VBN
40119	638	16	to	to	IN
40119	638	17	the	the	DT
40119	638	18	operation	operation	NN
40119	638	19	of	of	IN
40119	638	20	the	the	DT
40119	638	21	same	same	JJ
40119	638	22	law	law	NN
40119	638	23	.	.	.
40119	639	1	Fig	fig	NN
40119	639	2	.	.	.
40119	640	1	29	29	CD
40119	640	2	shows	show	VBZ
40119	640	3	a	a	DT
40119	640	4	curious	curious	JJ
40119	640	5	specimen	speciman	NNS
40119	640	6	.	.	.
40119	641	1	At	at	IN
40119	641	2	each	each	DT
40119	641	3	end	end	NN
40119	641	4	of	of	IN
40119	641	5	the	the	DT
40119	641	6	diagram	diagram	NN
40119	641	7	is	be	VBZ
40119	641	8	a	a	DT
40119	641	9	short	short	JJ
40119	641	10	upright	upright	JJ
40119	641	11	line	line	NN
40119	641	12	;	;	:
40119	641	13	exactly	exactly	RB
40119	641	14	in	in	IN
40119	641	15	the	the	DT
40119	641	16	middle	middle	NN
40119	641	17	is	be	VBZ
40119	641	18	another	another	DT
40119	641	19	;	;	:
40119	641	20	between	between	IN
40119	641	21	the	the	DT
40119	641	22	middle	middle	NN
40119	641	23	and	and	CC
40119	641	24	the	the	DT
40119	641	25	left	left	JJ
40119	641	26	hand	hand	NN
40119	641	27	end	end	NN
40119	641	28	are	be	VBP
40119	641	29	inserted	insert	VBN
40119	641	30	several	several	JJ
40119	641	31	more	more	JJR
40119	641	32	lines	line	NNS
40119	641	33	,	,	,
40119	641	34	the	the	DT
40119	641	35	space	space	NN
40119	641	36	to	to	IN
40119	641	37	the	the	DT
40119	641	38	right	right	NN
40119	641	39	of	of	IN
40119	641	40	the	the	DT
40119	641	41	middle	middle	NN
40119	641	42	being	be	VBG
40119	641	43	left	leave	VBN
40119	641	44	blank	blank	RB
40119	641	45	.	.	.
40119	642	1	Any	any	DT
40119	642	2	one	one	NN
40119	642	3	looking	look	VBG
40119	642	4	casually	casually	RB
40119	642	5	at	at	IN
40119	642	6	the	the	DT
40119	642	7	diagram	diagram	NN
40119	642	8	would	would	MD
40119	642	9	be	be	VB
40119	642	10	inclined	incline	VBN
40119	642	11	to	to	TO
40119	642	12	suppose	suppose	VB
40119	642	13	that	that	IN
40119	642	14	it	-PRON-	PRP
40119	642	15	was	be	VBD
40119	642	16	not	not	RB
40119	642	17	equally	equally	RB
40119	642	18	divided	divide	VBN
40119	642	19	by	by	IN
40119	642	20	what	what	WP
40119	642	21	purports	purport	NNS
40119	642	22	to	to	TO
40119	642	23	be	be	VB
40119	642	24	the	the	DT
40119	642	25	middle	middle	JJ
40119	642	26	line	line	NN
40119	642	27	,	,	,
40119	642	28	the	the	DT
40119	642	29	left	left	JJ
40119	642	30	hand	hand	NN
40119	642	31	portion	portion	NN
40119	642	32	appearing	appear	VBG
40119	642	33	sensibly	sensibly	RB
40119	642	34	longer	long	RBR
40119	642	35	than	than	IN
40119	642	36	the	the	DT
40119	642	37	other	other	JJ
40119	642	38	.	.	.
40119	643	1	[	[	-LRB-
40119	643	2	Illustration	illustration	NN
40119	643	3	:	:	:
40119	643	4	_	_	NNP
40119	643	5	Fig	Fig	NNP
40119	643	6	.	.	.
40119	644	1	29.--Illusion	29.--illusion	CD
40119	644	2	of	of	IN
40119	644	3	Distance	Distance	NNP
40119	644	4	.	.	.
40119	644	5	_	_	NNP
40119	644	6	]	]	-RRB-
40119	644	7	It	-PRON-	PRP
40119	644	8	is	be	VBZ
40119	644	9	not	not	RB
40119	644	10	difficult	difficult	JJ
40119	644	11	to	to	TO
40119	644	12	indicate	indicate	VB
40119	644	13	the	the	DT
40119	644	14	source	source	NN
40119	644	15	of	of	IN
40119	644	16	the	the	DT
40119	644	17	illusion	illusion	NN
40119	644	18	.	.	.
40119	645	1	When	when	WRB
40119	645	2	we	-PRON-	PRP
40119	645	3	look	look	VBP
40119	645	4	at	at	IN
40119	645	5	the	the	DT
40119	645	6	left	left	JJ
40119	645	7	hand	hand	NN
40119	645	8	portion	portion	NN
40119	645	9	we	-PRON-	PRP
40119	645	10	attend	attend	VBP
40119	645	11	to	to	IN
40119	645	12	the	the	DT
40119	645	13	small	small	JJ
40119	645	14	subdivisions	subdivision	NNS
40119	645	15	,	,	,
40119	645	16	and	and	CC
40119	645	17	the	the	DT
40119	645	18	mental	mental	JJ
40119	645	19	unit	unit	NN
40119	645	20	becomes	become	VBZ
40119	645	21	correspondingly	correspondingly	RB
40119	645	22	small	small	JJ
40119	645	23	;	;	:
40119	645	24	while	while	IN
40119	645	25	in	in	IN
40119	645	26	the	the	DT
40119	645	27	estimation	estimation	NN
40119	645	28	of	of	IN
40119	645	29	the	the	DT
40119	645	30	portion	portion	NN
40119	645	31	which	which	WDT
40119	645	32	is	be	VBZ
40119	645	33	not	not	RB
40119	645	34	subdivided	subdivide	VBN
40119	645	35	a	a	DT
40119	645	36	larger	large	JJR
40119	645	37	unit	unit	NN
40119	645	38	is	be	VBZ
40119	645	39	applied	apply	VBN
40119	645	40	.	.	.
40119	646	1	As	as	IN
40119	646	2	one	one	CD
40119	646	3	more	more	JJR
40119	646	4	example	example	NN
40119	646	5	I	-PRON-	PRP
40119	646	6	may	may	MD
40119	646	7	refer	refer	VB
40119	646	8	to	to	IN
40119	646	9	a	a	DT
40119	646	10	familiar	familiar	JJ
40119	646	11	trap	trap	NN
40119	646	12	for	for	IN
40119	646	13	the	the	DT
40119	646	14	unwary	unwary	NN
40119	646	15	.	.	.
40119	647	1	Ask	ask	VB
40119	647	2	a	a	DT
40119	647	3	person	person	NN
40119	647	4	to	to	TO
40119	647	5	mark	mark	VB
40119	647	6	upon	upon	IN
40119	647	7	the	the	DT
40119	647	8	wall	wall	NN
40119	647	9	of	of	IN
40119	647	10	a	a	DT
40119	647	11	room	room	NN
40119	647	12	the	the	DT
40119	647	13	height	height	NN
40119	647	14	above	above	IN
40119	647	15	the	the	DT
40119	647	16	floor	floor	NN
40119	647	17	which	which	WDT
40119	647	18	he	-PRON-	PRP
40119	647	19	thinks	think	VBZ
40119	647	20	will	will	MD
40119	647	21	correspond	correspond	VB
40119	647	22	to	to	IN
40119	647	23	that	that	DT
40119	647	24	of	of	IN
40119	647	25	a	a	DT
40119	647	26	gentleman	gentleman	NN
40119	647	27	's	's	POS
40119	647	28	tall	tall	JJ
40119	647	29	hat	hat	NN
40119	647	30	.	.	.
40119	648	1	Unless	unless	IN
40119	648	2	he	-PRON-	PRP
40119	648	3	has	have	VBZ
40119	648	4	been	be	VBN
40119	648	5	beguiled	beguile	VBN
40119	648	6	on	on	IN
40119	648	7	a	a	DT
40119	648	8	former	former	JJ
40119	648	9	occasion	occasion	NN
40119	648	10	,	,	,
40119	648	11	he	-PRON-	PRP
40119	648	12	will	will	MD
40119	648	13	certainly	certainly	RB
40119	648	14	place	place	VB
40119	648	15	the	the	DT
40119	648	16	mark	mark	NN
40119	648	17	several	several	JJ
40119	648	18	inches	inch	NNS
40119	648	19	too	too	RB
40119	648	20	high	high	JJ
40119	648	21	.	.	.
40119	649	1	Obviously	obviously	RB
40119	649	2	the	the	DT
40119	649	3	height	height	NN
40119	649	4	of	of	IN
40119	649	5	a	a	DT
40119	649	6	hat	hat	NN
40119	649	7	is	be	VBZ
40119	649	8	unconsciously	unconsciously	RB
40119	649	9	estimated	estimate	VBN
40119	649	10	in	in	IN
40119	649	11	terms	term	NNS
40119	649	12	of	of	IN
40119	649	13	a	a	DT
40119	649	14	smaller	small	JJR
40119	649	15	standard	standard	NN
40119	649	16	than	than	IN
40119	649	17	that	that	DT
40119	649	18	of	of	IN
40119	649	19	a	a	DT
40119	649	20	room	room	NN
40119	649	21	.	.	.
40119	650	1	The	the	DT
40119	650	2	illusion	illusion	NN
40119	650	3	presented	present	VBN
40119	650	4	by	by	IN
40119	650	5	the	the	DT
40119	650	6	horizontal	horizontal	JJ
40119	650	7	and	and	CC
40119	650	8	vertical	vertical	JJ
40119	650	9	lines	line	NNS
40119	650	10	in	in	IN
40119	650	11	Fig	Fig	NNP
40119	650	12	.	.	.
40119	651	1	25	25	CD
40119	651	2	(	(	-LRB-
40119	651	3	p.	p.	NN
40119	651	4	132	132	CD
40119	651	5	)	)	-RRB-
40119	651	6	depends	depend	VBZ
40119	651	7	,	,	,
40119	651	8	though	though	IN
40119	651	9	a	a	DT
40119	651	10	little	little	JJ
40119	651	11	less	less	RBR
40119	651	12	directly	directly	RB
40119	651	13	,	,	,
40119	651	14	upon	upon	IN
40119	651	15	a	a	DT
40119	651	16	similar	similar	JJ
40119	651	17	cause	cause	NN
40119	651	18	.	.	.
40119	652	1	We	-PRON-	PRP
40119	652	2	habitually	habitually	RB
40119	652	3	apply	apply	VBP
40119	652	4	a	a	DT
40119	652	5	larger	large	JJR
40119	652	6	standard	standard	NN
40119	652	7	in	in	IN
40119	652	8	the	the	DT
40119	652	9	estimation	estimation	NN
40119	652	10	of	of	IN
40119	652	11	horizontal	horizontal	JJ
40119	652	12	than	than	IN
40119	652	13	of	of	IN
40119	652	14	vertical	vertical	JJ
40119	652	15	distances	distance	NNS
40119	652	16	,	,	,
40119	652	17	because	because	IN
40119	652	18	the	the	DT
40119	652	19	horizontal	horizontal	JJ
40119	652	20	magnitudes	magnitude	NNS
40119	652	21	to	to	TO
40119	652	22	which	which	WDT
40119	652	23	we	-PRON-	PRP
40119	652	24	are	be	VBP
40119	652	25	accustomed	accustomed	JJ
40119	652	26	are	be	VBP
40119	652	27	upon	upon	IN
40119	652	28	the	the	DT
40119	652	29	whole	whole	JJ
40119	652	30	very	very	RB
40119	652	31	much	much	RB
40119	652	32	greater	great	JJR
40119	652	33	than	than	IN
40119	652	34	the	the	DT
40119	652	35	vertical	vertical	JJ
40119	652	36	ones	one	NNS
40119	652	37	.	.	.
40119	653	1	The	the	DT
40119	653	2	heights	height	NNS
40119	653	3	of	of	IN
40119	653	4	houses	house	NNS
40119	653	5	,	,	,
40119	653	6	towers	tower	NNS
40119	653	7	,	,	,
40119	653	8	spires	spire	NNS
40119	653	9	,	,	,
40119	653	10	trees	tree	NNS
40119	653	11	,	,	,
40119	653	12	or	or	CC
40119	653	13	even	even	RB
40119	653	14	mountains	mountain	NNS
40119	653	15	are	be	VBP
40119	653	16	insignificant	insignificant	JJ
40119	653	17	in	in	IN
40119	653	18	comparison	comparison	NN
40119	653	19	with	with	IN
40119	653	20	the	the	DT
40119	653	21	horizontal	horizontal	JJ
40119	653	22	extension	extension	NN
40119	653	23	of	of	IN
40119	653	24	the	the	DT
40119	653	25	earth	earth	NN
40119	653	26	's	's	POS
40119	653	27	surface	surface	NN
40119	653	28	,	,	,
40119	653	29	and	and	CC
40119	653	30	of	of	IN
40119	653	31	many	many	JJ
40119	653	32	things	thing	NNS
40119	653	33	upon	upon	IN
40119	653	34	it	-PRON-	PRP
40119	653	35	,	,	,
40119	653	36	to	to	TO
40119	653	37	which	which	WDT
40119	653	38	our	-PRON-	PRP$
40119	653	39	notice	notice	NN
40119	653	40	is	be	VBZ
40119	653	41	constantly	constantly	RB
40119	653	42	directed	direct	VBN
40119	653	43	.	.	.
40119	654	1	For	for	IN
40119	654	2	this	this	DT
40119	654	3	reason	reason	NN
40119	654	4	,	,	,
40119	654	5	we	-PRON-	PRP
40119	654	6	have	have	VBP
40119	654	7	come	come	VBN
40119	654	8	to	to	TO
40119	654	9	associate	associate	JJ
40119	654	10	horizontality	horizontality	NN
40119	654	11	with	with	IN
40119	654	12	greater	great	JJR
40119	654	13	extension	extension	NN
40119	654	14	and	and	CC
40119	654	15	verticality	verticality	NN
40119	654	16	with	with	IN
40119	654	17	less	less	JJR
40119	654	18	,	,	,
40119	654	19	and	and	CC
40119	654	20	,	,	,
40119	654	21	in	in	IN
40119	654	22	conformity	conformity	NN
40119	654	23	with	with	IN
40119	654	24	our	-PRON-	PRP$
40119	654	25	law	law	NN
40119	654	26	,	,	,
40119	654	27	a	a	DT
40119	654	28	given	give	VBN
40119	654	29	distance	distance	NN
40119	654	30	appears	appear	VBZ
40119	654	31	longer	long	RBR
40119	654	32	when	when	WRB
40119	654	33	reckoned	reckon	VBN
40119	654	34	vertically	vertically	RB
40119	654	35	than	than	IN
40119	654	36	when	when	WRB
40119	654	37	reckoned	reckon	VBN
40119	654	38	horizontally	horizontally	RB
40119	654	39	.	.	.
40119	655	1	Hence	hence	RB
40119	655	2	the	the	DT
40119	655	3	illusion	illusion	NN
40119	655	4	in	in	IN
40119	655	5	Fig	Fig	NNP
40119	655	6	.	.	.
40119	656	1	25	25	CD
40119	656	2	.	.	.
40119	657	1	But	but	CC
40119	657	2	it	-PRON-	PRP
40119	657	3	is	be	VBZ
40119	657	4	not	not	RB
40119	657	5	only	only	RB
40119	657	6	in	in	IN
40119	657	7	regard	regard	NN
40119	657	8	to	to	IN
40119	657	9	lengths	length	NNS
40119	657	10	and	and	CC
40119	657	11	distances	distance	NNS
40119	657	12	that	that	IN
40119	657	13	the	the	DT
40119	657	14	law	law	NN
40119	657	15	in	in	IN
40119	657	16	question	question	NN
40119	657	17	holds	hold	VBZ
40119	657	18	good	good	JJ
40119	657	19	;	;	:
40119	657	20	in	in	IN
40119	657	21	most	most	RBS
40119	657	22	,	,	,
40119	657	23	if	if	IN
40119	657	24	not	not	RB
40119	657	25	all	all	DT
40119	657	26	cases	case	NNS
40119	657	27	in	in	IN
40119	657	28	which	which	WDT
40119	657	29	a	a	DT
40119	657	30	psycho	psycho	NN
40119	657	31	-	-	HYPH
40119	657	32	optical	optical	JJ
40119	657	33	estimate	estimate	NN
40119	657	34	is	be	VBZ
40119	657	35	possible	possible	JJ
40119	657	36	,	,	,
40119	657	37	the	the	DT
40119	657	38	mental	mental	JJ
40119	657	39	standard	standard	NN
40119	657	40	is	be	VBZ
40119	657	41	unstable	unstable	JJ
40119	657	42	and	and	CC
40119	657	43	tends	tend	VBZ
40119	657	44	to	to	TO
40119	657	45	assimilate	assimilate	VB
40119	657	46	itself	-PRON-	PRP
40119	657	47	,	,	,
40119	657	48	as	as	IN
40119	657	49	regards	regard	VBZ
40119	657	50	the	the	DT
40119	657	51	quality	quality	NN
40119	657	52	or	or	CC
40119	657	53	condition	condition	NN
40119	657	54	to	to	TO
40119	657	55	be	be	VB
40119	657	56	estimated	estimate	VBN
40119	657	57	,	,	,
40119	657	58	to	to	IN
40119	657	59	the	the	DT
40119	657	60	entity	entity	NN
40119	657	61	in	in	IN
40119	657	62	which	which	WDT
40119	657	63	the	the	DT
40119	657	64	same	same	JJ
40119	657	65	is	be	VBZ
40119	657	66	manifested	manifest	VBN
40119	657	67	.	.	.
40119	658	1	This	this	DT
40119	658	2	is	be	VBZ
40119	658	3	true	true	JJ
40119	658	4	,	,	,
40119	658	5	for	for	IN
40119	658	6	example	example	NN
40119	658	7	,	,	,
40119	658	8	in	in	IN
40119	658	9	judging	judging	NN
40119	658	10	of	of	IN
40119	658	11	an	an	DT
40119	658	12	angle	angle	NN
40119	658	13	of	of	IN
40119	658	14	inclination	inclination	NN
40119	658	15	or	or	CC
40119	658	16	slope	slope	NN
40119	658	17	;	;	:
40119	658	18	of	of	IN
40119	658	19	a	a	DT
40119	658	20	motion	motion	NN
40119	658	21	in	in	IN
40119	658	22	space	space	NN
40119	658	23	;	;	:
40119	658	24	of	of	IN
40119	658	25	luminous	luminous	JJ
40119	658	26	intensity	intensity	NN
40119	658	27	,	,	,
40119	658	28	or	or	CC
40119	658	29	of	of	IN
40119	658	30	the	the	DT
40119	658	31	purity	purity	NN
40119	658	32	of	of	IN
40119	658	33	a	a	DT
40119	658	34	colour	colour	NN
40119	658	35	.	.	.
40119	659	1	Every	every	DT
40119	659	2	cyclist	cyclist	NN
40119	659	3	knows	know	VBZ
40119	659	4	how	how	WRB
40119	659	5	difficult	difficult	JJ
40119	659	6	it	-PRON-	PRP
40119	659	7	is	be	VBZ
40119	659	8	to	to	TO
40119	659	9	form	form	VB
40119	659	10	a	a	DT
40119	659	11	correct	correct	JJ
40119	659	12	judgment	judgment	NN
40119	659	13	of	of	IN
40119	659	14	the	the	DT
40119	659	15	steepness	steepness	NN
40119	659	16	of	of	IN
40119	659	17	a	a	DT
40119	659	18	hill	hill	NN
40119	659	19	by	by	IN
40119	659	20	merely	merely	RB
40119	659	21	looking	look	VBG
40119	659	22	at	at	IN
40119	659	23	it	-PRON-	PRP
40119	659	24	.	.	.
40119	660	1	Not	not	RB
40119	660	2	only	only	RB
40119	660	3	may	may	MD
40119	660	4	a	a	DT
40119	660	5	slope	slope	NN
40119	660	6	seem	seem	VB
40119	660	7	to	to	TO
40119	660	8	be	be	VB
40119	660	9	greater	great	JJR
40119	660	10	or	or	CC
40119	660	11	less	less	JJR
40119	660	12	than	than	IN
40119	660	13	it	-PRON-	PRP
40119	660	14	really	really	RB
40119	660	15	is	be	VBZ
40119	660	16	,	,	,
40119	660	17	but	but	CC
40119	660	18	under	under	IN
40119	660	19	certain	certain	JJ
40119	660	20	circumstances	circumstance	NNS
40119	660	21	a	a	DT
40119	660	22	dead	dead	JJ
40119	660	23	level	level	NN
40119	660	24	sometimes	sometimes	RB
40119	660	25	appears	appear	VBZ
40119	660	26	as	as	IN
40119	660	27	an	an	DT
40119	660	28	upward	upward	JJ
40119	660	29	or	or	CC
40119	660	30	downward	downward	JJ
40119	660	31	inclination	inclination	NN
40119	660	32	,	,	,
40119	660	33	while	while	IN
40119	660	34	a	a	DT
40119	660	35	gentle	gentle	JJ
40119	660	36	ascent	ascent	NN
40119	660	37	may	may	MD
40119	660	38	even	even	RB
40119	660	39	be	be	VB
40119	660	40	mistaken	mistake	VBN
40119	660	41	for	for	IN
40119	660	42	a	a	DT
40119	660	43	descent	descent	NN
40119	660	44	,	,	,
40119	660	45	and	and	CC
40119	660	46	_	_	NNP
40119	660	47	vice	vice	NN
40119	660	48	versa	versa	NNP
40119	660	49	_	_	NNP
40119	660	50	.	.	.
40119	661	1	We	-PRON-	PRP
40119	661	2	usually	usually	RB
40119	661	3	specify	specify	VBP
40119	661	4	a	a	DT
40119	661	5	slope	slope	NN
40119	661	6	by	by	IN
40119	661	7	its	-PRON-	PRP$
40119	661	8	inclination	inclination	NN
40119	661	9	to	to	IN
40119	661	10	a	a	DT
40119	661	11	level	level	NN
40119	661	12	plane	plane	NN
40119	661	13	which	which	WDT
40119	661	14	is	be	VBZ
40119	661	15	parallel	parallel	JJ
40119	661	16	to	to	IN
40119	661	17	the	the	DT
40119	661	18	plane	plane	NN
40119	661	19	of	of	IN
40119	661	20	the	the	DT
40119	661	21	horizon	horizon	NN
40119	661	22	,	,	,
40119	661	23	or	or	CC
40119	661	24	at	at	IN
40119	661	25	right	right	JJ
40119	661	26	angles	angle	NNS
40119	661	27	to	to	IN
40119	661	28	the	the	DT
40119	661	29	direction	direction	NN
40119	661	30	of	of	IN
40119	661	31	gravity	gravity	NN
40119	661	32	.	.	.
40119	662	1	At	at	IN
40119	662	2	any	any	DT
40119	662	3	given	give	VBN
40119	662	4	spot	spot	NN
40119	662	5	the	the	DT
40119	662	6	level	level	NN
40119	662	7	is	be	VBZ
40119	662	8	,	,	,
40119	662	9	physically	physically	RB
40119	662	10	considered	consider	VBN
40119	662	11	,	,	,
40119	662	12	definite	definite	JJ
40119	662	13	and	and	CC
40119	662	14	unalterable	unalterable	JJ
40119	662	15	.	.	.
40119	663	1	In	in	IN
40119	663	2	forming	form	VBG
40119	663	3	a	a	DT
40119	663	4	mental	mental	JJ
40119	663	5	judgment	judgment	NN
40119	663	6	of	of	IN
40119	663	7	an	an	DT
40119	663	8	inclination	inclination	NN
40119	663	9	,	,	,
40119	663	10	we	-PRON-	PRP
40119	663	11	employ	employ	VBP
40119	663	12	as	as	IN
40119	663	13	our	-PRON-	PRP$
40119	663	14	standard	standard	NN
40119	663	15	of	of	IN
40119	663	16	reference	reference	NN
40119	663	17	an	an	DT
40119	663	18	imaginary	imaginary	JJ
40119	663	19	plane	plane	NN
40119	663	20	which	which	WDT
40119	663	21	is	be	VBZ
40119	663	22	intended	intend	VBN
40119	663	23	to	to	TO
40119	663	24	be	be	VB
40119	663	25	identical	identical	JJ
40119	663	26	with	with	IN
40119	663	27	the	the	DT
40119	663	28	physical	physical	JJ
40119	663	29	level	level	NN
40119	663	30	.	.	.
40119	664	1	But	but	CC
40119	664	2	our	-PRON-	PRP$
40119	664	3	mental	mental	JJ
40119	664	4	plane	plane	NN
40119	664	5	is	be	VBZ
40119	664	6	not	not	RB
40119	664	7	absolutely	absolutely	RB
40119	664	8	stable	stable	JJ
40119	664	9	;	;	:
40119	664	10	when	when	WRB
40119	664	11	we	-PRON-	PRP
40119	664	12	refer	refer	VBP
40119	664	13	a	a	DT
40119	664	14	slope	slope	NN
40119	664	15	to	to	IN
40119	664	16	it	-PRON-	PRP
40119	664	17	,	,	,
40119	664	18	we	-PRON-	PRP
40119	664	19	unconsciously	unconsciously	RB
40119	664	20	give	give	VBP
40119	664	21	the	the	DT
40119	664	22	mental	mental	JJ
40119	664	23	plane	plane	NN
40119	664	24	a	a	DT
40119	664	25	slight	slight	JJ
40119	664	26	tilt	tilt	NN
40119	664	27	,	,	,
40119	664	28	tending	tend	VBG
40119	664	29	to	to	TO
40119	664	30	make	make	VB
40119	664	31	it	-PRON-	PRP
40119	664	32	parallel	parallel	JJ
40119	664	33	with	with	IN
40119	664	34	the	the	DT
40119	664	35	slope	slope	NN
40119	664	36	.	.	.
40119	665	1	Hence	hence	RB
40119	665	2	the	the	DT
40119	665	3	inclination	inclination	NN
40119	665	4	of	of	IN
40119	665	5	a	a	DT
40119	665	6	simple	simple	JJ
40119	665	7	slope	slope	NN
40119	665	8	,	,	,
40119	665	9	when	when	WRB
40119	665	10	misleading	misleading	JJ
40119	665	11	complications	complication	NNS
40119	665	12	are	be	VBP
40119	665	13	absent	absent	JJ
40119	665	14	,	,	,
40119	665	15	is	be	VBZ
40119	665	16	always	always	RB
40119	665	17	underestimated	underestimate	VBN
40119	665	18	.	.	.
40119	666	1	[	[	-LRB-
40119	666	2	Illustration	illustration	NN
40119	666	3	:	:	:
40119	666	4	_	_	NNP
40119	666	5	Fig	Fig	NNP
40119	666	6	.	.	.
40119	667	1	30.--Illusion	30.--illusion	CD
40119	667	2	of	of	IN
40119	667	3	Inclination	Inclination	NNP
40119	667	4	.	.	.
40119	667	5	_	_	NNP
40119	667	6	]	]	-RRB-
40119	667	7	This	this	DT
40119	667	8	may	may	MD
40119	667	9	be	be	VB
40119	667	10	illustrated	illustrate	VBN
40119	667	11	by	by	IN
40119	667	12	the	the	DT
40119	667	13	diagram	diagram	NN
40119	667	14	Fig	Fig	NNP
40119	667	15	.	.	.
40119	668	1	30	30	CD
40119	668	2	.	.	.
40119	669	1	If	if	IN
40119	669	2	A	a	DT
40119	669	3	B	B	NNP
40119	669	4	represents	represent	VBZ
40119	669	5	a	a	DT
40119	669	6	truly	truly	RB
40119	669	7	horizontal	horizontal	JJ
40119	669	8	line	line	NN
40119	669	9	,	,	,
40119	669	10	the	the	DT
40119	669	11	slope	slope	NN
40119	669	12	of	of	IN
40119	669	13	the	the	DT
40119	669	14	oblique	oblique	JJ
40119	669	15	line	line	NN
40119	669	16	C	C	NNP
40119	669	17	D	d	NN
40119	669	18	is	be	VBZ
40119	669	19	correctly	correctly	RB
40119	669	20	specified	specify	VBN
40119	669	21	by	by	IN
40119	669	22	the	the	DT
40119	669	23	angle	angle	NN
40119	669	24	C	c	NN
40119	669	25	O	o	NN
40119	669	26	A.	a.	NN
40119	670	1	But	but	CC
40119	670	2	if	if	IN
40119	670	3	we	-PRON-	PRP
40119	670	4	have	have	VBP
40119	670	5	no	no	DT
40119	670	6	instrument	instrument	NN
40119	670	7	at	at	IN
40119	670	8	hand	hand	NN
40119	670	9	to	to	TO
40119	670	10	fix	fix	VB
40119	670	11	the	the	DT
40119	670	12	level	level	NN
40119	670	13	for	for	IN
40119	670	14	us	-PRON-	PRP
40119	670	15	,	,	,
40119	670	16	we	-PRON-	PRP
40119	670	17	shall	shall	MD
40119	670	18	infallibly	infallibly	RB
40119	670	19	imagine	imagine	VB
40119	670	20	it	-PRON-	PRP
40119	670	21	to	to	TO
40119	670	22	be	be	VB
40119	670	23	in	in	IN
40119	670	24	some	some	DT
40119	670	25	such	such	JJ
40119	670	26	position	position	NN
40119	670	27	as	as	IN
40119	670	28	that	that	DT
40119	670	29	indicated	indicate	VBD
40119	670	30	(	(	-LRB-
40119	670	31	in	in	IN
40119	670	32	an	an	DT
40119	670	33	exaggerated	exaggerated	JJ
40119	670	34	degree	degree	NN
40119	670	35	)	)	-RRB-
40119	670	36	by	by	IN
40119	670	37	the	the	DT
40119	670	38	dotted	dotted	JJ
40119	670	39	line	line	NN
40119	670	40	E	E	NNP
40119	670	41	F	f	NN
40119	670	42	,	,	,
40119	670	43	while	while	IN
40119	670	44	the	the	DT
40119	670	45	true	true	JJ
40119	670	46	level	level	NN
40119	670	47	A	a	DT
40119	670	48	B	b	NN
40119	670	49	will	will	MD
40119	670	50	appear	appear	VB
40119	670	51	to	to	TO
40119	670	52	slope	slope	VB
40119	670	53	oppositely	oppositely	RB
40119	670	54	to	to	IN
40119	670	55	C	C	NNP
40119	670	56	D.	D.	NNP
40119	670	57	This	this	DT
40119	670	58	class	class	NN
40119	670	59	of	of	IN
40119	670	60	illusion	illusion	NN
40119	670	61	is	be	VBZ
40119	670	62	remarkably	remarkably	RB
40119	670	63	well	well	RB
40119	670	64	demonstrated	demonstrate	VBN
40119	670	65	by	by	IN
40119	670	66	Zöllner	Zöllner	NNP
40119	670	67	's	's	POS
40119	670	68	lines	line	NNS
40119	670	69	,	,	,
40119	670	70	Fig	Fig	NNP
40119	670	71	.	.	.
40119	671	1	31	31	CD
40119	671	2	;	;	:
40119	671	3	the	the	DT
40119	671	4	two	two	CD
40119	671	5	thick	thick	JJ
40119	671	6	lines	line	NNS
40119	671	7	which	which	WDT
40119	671	8	appear	appear	VBP
40119	671	9	to	to	TO
40119	671	10	diverge	diverge	VB
40119	671	11	from	from	IN
40119	671	12	left	leave	VBN
40119	671	13	to	to	IN
40119	671	14	right	right	NN
40119	671	15	,	,	,
40119	671	16	are	be	VBP
40119	671	17	in	in	IN
40119	671	18	truth	truth	NN
40119	671	19	strictly	strictly	RB
40119	671	20	parallel	parallel	JJ
40119	671	21	.	.	.
40119	672	1	[	[	-LRB-
40119	672	2	Illustration	illustration	NN
40119	672	3	:	:	:
40119	672	4	_	_	NNP
40119	672	5	Fig	Fig	NNP
40119	672	6	.	.	.
40119	673	1	31.--Zöllner	31.--Zöllner	NNP
40119	673	2	's	's	POS
40119	673	3	Lines	line	NNS
40119	673	4	.	.	.
40119	673	5	_	_	NNP
40119	673	6	]	]	-RRB-
40119	673	7	I	-PRON-	PRP
40119	673	8	need	need	VBP
40119	673	9	not	not	RB
40119	673	10	discuss	discuss	VB
40119	673	11	in	in	IN
40119	673	12	further	further	JJ
40119	673	13	detail	detail	NN
40119	673	14	the	the	DT
40119	673	15	various	various	JJ
40119	673	16	illusions	illusion	NNS
40119	673	17	to	to	TO
40119	673	18	which	which	WDT
40119	673	19	a	a	DT
40119	673	20	cyclist	cyclist	NN
40119	673	21	is	be	VBZ
40119	673	22	subjected	subject	VBN
40119	673	23	when	when	WRB
40119	673	24	slopes	slope	NNS
40119	673	25	of	of	IN
40119	673	26	different	different	JJ
40119	673	27	inclinations	inclination	NNS
40119	673	28	succeed	succeed	VBP
40119	673	29	one	one	CD
40119	673	30	another	another	DT
40119	673	31	:	:	:
40119	673	32	they	-PRON-	PRP
40119	673	33	all	all	DT
40119	673	34	follow	follow	VBP
40119	673	35	simply	simply	RB
40119	673	36	from	from	IN
40119	673	37	the	the	DT
40119	673	38	same	same	JJ
40119	673	39	general	general	JJ
40119	673	40	principle	principle	NN
40119	673	41	.	.	.
40119	674	1	A	a	DT
40119	674	2	thing	thing	NN
40119	674	3	is	be	VBZ
40119	674	4	said	say	VBN
40119	674	5	to	to	TO
40119	674	6	be	be	VB
40119	674	7	in	in	IN
40119	674	8	motion	motion	NN
40119	674	9	when	when	WRB
40119	674	10	it	-PRON-	PRP
40119	674	11	is	be	VBZ
40119	674	12	changing	change	VBG
40119	674	13	its	-PRON-	PRP$
40119	674	14	position	position	NN
40119	674	15	relatively	relatively	RB
40119	674	16	to	to	IN
40119	674	17	the	the	DT
40119	674	18	earth	earth	NN
40119	674	19	,	,	,
40119	674	20	which	which	WDT
40119	674	21	for	for	IN
40119	674	22	all	all	DT
40119	674	23	practical	practical	JJ
40119	674	24	purposes	purpose	NNS
40119	674	25	may	may	MD
40119	674	26	be	be	VB
40119	674	27	regarded	regard	VBN
40119	674	28	as	as	IN
40119	674	29	motionless	motionless	JJ
40119	674	30	.	.	.
40119	675	1	The	the	DT
40119	675	2	state	state	NN
40119	675	3	,	,	,
40119	675	4	as	as	IN
40119	675	5	regards	regard	VBZ
40119	675	6	motion	motion	NN
40119	675	7	,	,	,
40119	675	8	of	of	IN
40119	675	9	the	the	DT
40119	675	10	earth	earth	NN
40119	675	11	and	and	CC
40119	675	12	anything	anything	NN
40119	675	13	rigidly	rigidly	RB
40119	675	14	attached	attach	VBN
40119	675	15	to	to	IN
40119	675	16	it	-PRON-	PRP
40119	675	17	,	,	,
40119	675	18	therefore	therefore	RB
40119	675	19	constitutes	constitute	VBZ
40119	675	20	the	the	DT
40119	675	21	physical	physical	JJ
40119	675	22	zero	zero	CD
40119	675	23	or	or	CC
40119	675	24	standard	standard	NN
40119	675	25	to	to	TO
40119	675	26	which	which	WDT
40119	675	27	the	the	DT
40119	675	28	motion	motion	NN
40119	675	29	of	of	IN
40119	675	30	everything	everything	NN
40119	675	31	terrestrial	terrestrial	JJ
40119	675	32	is	be	VBZ
40119	675	33	referred	refer	VBN
40119	675	34	.	.	.
40119	676	1	But	but	CC
40119	676	2	the	the	DT
40119	676	3	corresponding	correspond	VBG
40119	676	4	mental	mental	JJ
40119	676	5	standard	standard	NN
40119	676	6	,	,	,
40119	676	7	especially	especially	RB
40119	676	8	when	when	WRB
40119	676	9	it	-PRON-	PRP
40119	676	10	can	can	MD
40119	676	11	not	not	RB
40119	676	12	easily	easily	RB
40119	676	13	be	be	VB
40119	676	14	checked	check	VBN
40119	676	15	by	by	IN
40119	676	16	comparison	comparison	NN
40119	676	17	with	with	IN
40119	676	18	some	some	DT
40119	676	19	stationary	stationary	JJ
40119	676	20	object	object	NN
40119	676	21	,	,	,
40119	676	22	is	be	VBZ
40119	676	23	liable	liable	JJ
40119	676	24	to	to	TO
40119	676	25	deviate	deviate	VB
40119	676	26	from	from	IN
40119	676	27	the	the	DT
40119	676	28	physical	physical	JJ
40119	676	29	one	one	CD
40119	676	30	;	;	:
40119	676	31	it	-PRON-	PRP
40119	676	32	tends	tend	VBZ
40119	676	33	in	in	IN
40119	676	34	fact	fact	NN
40119	676	35	to	to	TO
40119	676	36	move	move	VB
40119	676	37	in	in	IN
40119	676	38	the	the	DT
40119	676	39	same	same	JJ
40119	676	40	direction	direction	NN
40119	676	41	as	as	IN
40119	676	42	the	the	DT
40119	676	43	moving	move	VBG
40119	676	44	body	body	NN
40119	676	45	which	which	WDT
40119	676	46	is	be	VBZ
40119	676	47	under	under	IN
40119	676	48	observation	observation	NN
40119	676	49	,	,	,
40119	676	50	and	and	CC
40119	676	51	the	the	DT
40119	676	52	apparent	apparent	JJ
40119	676	53	speed	speed	NN
40119	676	54	of	of	IN
40119	676	55	the	the	DT
40119	676	56	body	body	NN
40119	676	57	is	be	VBZ
40119	676	58	consequently	consequently	RB
40119	676	59	rather	rather	RB
40119	676	60	less	less	JJR
40119	676	61	than	than	IN
40119	676	62	it	-PRON-	PRP
40119	676	63	should	should	MD
40119	676	64	be	be	VB
40119	676	65	.	.	.
40119	677	1	The	the	DT
40119	677	2	influence	influence	NN
40119	677	3	exerted	exert	VBN
40119	677	4	upon	upon	IN
40119	677	5	the	the	DT
40119	677	6	judgment	judgment	NN
40119	677	7	sometimes	sometimes	RB
40119	677	8	even	even	RB
40119	677	9	persists	persist	VBZ
40119	677	10	for	for	IN
40119	677	11	an	an	DT
40119	677	12	appreciable	appreciable	JJ
40119	677	13	period	period	NN
40119	677	14	after	after	IN
40119	677	15	the	the	DT
40119	677	16	exciting	exciting	JJ
40119	677	17	cause	cause	NN
40119	677	18	has	have	VBZ
40119	677	19	ceased	cease	VBN
40119	677	20	to	to	TO
40119	677	21	be	be	VB
40119	677	22	operative	operative	JJ
40119	677	23	,	,	,
40119	677	24	as	as	IN
40119	677	25	when	when	WRB
40119	677	26	the	the	DT
40119	677	27	moving	move	VBG
40119	677	28	body	body	NN
40119	677	29	is	be	VBZ
40119	677	30	lost	lose	VBN
40119	677	31	sight	sight	NN
40119	677	32	of	of	IN
40119	677	33	or	or	CC
40119	677	34	has	have	VBZ
40119	677	35	suddenly	suddenly	RB
40119	677	36	come	come	VBN
40119	677	37	to	to	TO
40119	677	38	rest	rest	VB
40119	677	39	;	;	:
40119	677	40	in	in	IN
40119	677	41	such	such	JJ
40119	677	42	cases	case	NNS
40119	677	43	fixed	fix	VBN
40119	677	44	objects	object	NNS
40119	677	45	,	,	,
40119	677	46	being	be	VBG
40119	677	47	compared	compare	VBN
40119	677	48	with	with	IN
40119	677	49	the	the	DT
40119	677	50	delusive	delusive	JJ
40119	677	51	mental	mental	JJ
40119	677	52	standard	standard	NN
40119	677	53	,	,	,
40119	677	54	appear	appear	VB
40119	677	55	for	for	IN
40119	677	56	a	a	DT
40119	677	57	few	few	JJ
40119	677	58	seconds	second	NNS
40119	677	59	to	to	TO
40119	677	60	be	be	VB
40119	677	61	moving	move	VBG
40119	677	62	in	in	IN
40119	677	63	the	the	DT
40119	677	64	opposite	opposite	JJ
40119	677	65	direction	direction	NN
40119	677	66	.	.	.
40119	678	1	I	-PRON-	PRP
40119	678	2	have	have	VBP
40119	678	3	devised	devise	VBN
40119	678	4	a	a	DT
40119	678	5	lantern	lantern	JJ
40119	678	6	slide	slide	NN
40119	678	7	(	(	-LRB-
40119	678	8	Fig	fig	NN
40119	678	9	.	.	.
40119	679	1	32	32	CD
40119	679	2	)	)	-RRB-
40119	679	3	by	by	IN
40119	679	4	the	the	DT
40119	679	5	aid	aid	NN
40119	679	6	of	of	IN
40119	679	7	which	which	WDT
40119	679	8	this	this	DT
40119	679	9	phenomenon	phenomenon	NN
40119	679	10	may	may	MD
40119	679	11	be	be	VB
40119	679	12	rendered	render	VBN
40119	679	13	very	very	RB
40119	679	14	evident	evident	JJ
40119	679	15	.	.	.
40119	680	1	In	in	IN
40119	680	2	a	a	DT
40119	680	3	square	square	JJ
40119	680	4	plate	plate	NN
40119	680	5	of	of	IN
40119	680	6	metal	metal	NN
40119	680	7	is	be	VBZ
40119	680	8	cut	cut	VBN
40119	680	9	a	a	DT
40119	680	10	vertical	vertical	JJ
40119	680	11	slot	slot	NN
40119	680	12	,	,	,
40119	680	13	which	which	WDT
40119	680	14	is	be	VBZ
40119	680	15	shaded	shade	VBN
40119	680	16	in	in	IN
40119	680	17	the	the	DT
40119	680	18	figure	figure	NN
40119	680	19	;	;	:
40119	680	20	behind	behind	IN
40119	680	21	the	the	DT
40119	680	22	plate	plate	NN
40119	680	23	is	be	VBZ
40119	680	24	an	an	DT
40119	680	25	opaque	opaque	JJ
40119	680	26	disk	disk	NN
40119	680	27	,	,	,
40119	680	28	which	which	WDT
40119	680	29	,	,	,
40119	680	30	by	by	IN
40119	680	31	means	mean	NNS
40119	680	32	of	of	IN
40119	680	33	suitable	suitable	JJ
40119	680	34	mechanism	mechanism	NN
40119	680	35	,	,	,
40119	680	36	can	can	MD
40119	680	37	be	be	VB
40119	680	38	made	make	VBN
40119	680	39	to	to	TO
40119	680	40	rotate	rotate	VB
40119	680	41	about	about	IN
40119	680	42	its	-PRON-	PRP$
40119	680	43	centre	centre	NN
40119	680	44	.	.	.
40119	681	1	The	the	DT
40119	681	2	disk	disk	NN
40119	681	3	has	have	VBZ
40119	681	4	a	a	DT
40119	681	5	spiral	spiral	JJ
40119	681	6	opening	opening	NN
40119	681	7	cut	cut	NN
40119	681	8	in	in	IN
40119	681	9	it	-PRON-	PRP
40119	681	10	of	of	IN
40119	681	11	the	the	DT
40119	681	12	same	same	JJ
40119	681	13	width	width	NN
40119	681	14	as	as	IN
40119	681	15	the	the	DT
40119	681	16	slot	slot	NN
40119	681	17	,	,	,
40119	681	18	as	as	IN
40119	681	19	indicated	indicate	VBN
40119	681	20	by	by	IN
40119	681	21	the	the	DT
40119	681	22	dotted	dotted	JJ
40119	681	23	line	line	NN
40119	681	24	.	.	.
40119	682	1	The	the	DT
40119	682	2	slide	slide	NN
40119	682	3	is	be	VBZ
40119	682	4	placed	place	VBN
40119	682	5	in	in	IN
40119	682	6	an	an	DT
40119	682	7	optical	optical	JJ
40119	682	8	lantern	lantern	NN
40119	682	9	,	,	,
40119	682	10	and	and	CC
40119	682	11	the	the	DT
40119	682	12	light	light	NN
40119	682	13	passing	pass	VBG
40119	682	14	through	through	IN
40119	682	15	the	the	DT
40119	682	16	aperture	aperture	NN
40119	682	17	formed	form	VBN
40119	682	18	where	where	WRB
40119	682	19	the	the	DT
40119	682	20	slot	slot	NN
40119	682	21	is	be	VBZ
40119	682	22	crossed	cross	VBN
40119	682	23	by	by	IN
40119	682	24	the	the	DT
40119	682	25	spiral	spiral	JJ
40119	682	26	opening	opening	NN
40119	682	27	,	,	,
40119	682	28	produces	produce	VBZ
40119	682	29	a	a	DT
40119	682	30	small	small	JJ
40119	682	31	bright	bright	JJ
40119	682	32	patch	patch	NN
40119	682	33	upon	upon	IN
40119	682	34	a	a	DT
40119	682	35	white	white	JJ
40119	682	36	screen	screen	NN
40119	682	37	hung	hang	VBN
40119	682	38	at	at	IN
40119	682	39	a	a	DT
40119	682	40	suitable	suitable	JJ
40119	682	41	distance	distance	NN
40119	682	42	from	from	IN
40119	682	43	the	the	DT
40119	682	44	lantern	lantern	NN
40119	682	45	.	.	.
40119	683	1	[	[	-LRB-
40119	683	2	Illustration	illustration	NN
40119	683	3	:	:	:
40119	683	4	_	_	NNP
40119	683	5	Fig	Fig	NNP
40119	683	6	.	.	.
40119	684	1	32.--Slide	32.--slide	CD
40119	684	2	for	for	IN
40119	684	3	showing	show	VBG
40119	684	4	Illusions	Illusions	NNPS
40119	684	5	of	of	IN
40119	684	6	Motion	Motion	NNP
40119	684	7	.	.	.
40119	684	8	_	_	NNP
40119	684	9	]	]	-RRB-
40119	684	10	When	when	WRB
40119	684	11	the	the	DT
40119	684	12	disk	disk	NN
40119	684	13	is	be	VBZ
40119	684	14	turned	turn	VBN
40119	684	15	in	in	RP
40119	684	16	the	the	DT
40119	684	17	direction	direction	NN
40119	684	18	indicated	indicate	VBN
40119	684	19	by	by	IN
40119	684	20	the	the	DT
40119	684	21	arrow	arrow	NN
40119	684	22	,	,	,
40119	684	23	the	the	DT
40119	684	24	bright	bright	JJ
40119	684	25	patch	patch	NN
40119	684	26	moves	move	VBZ
40119	684	27	upwards	upwards	RB
40119	684	28	and	and	CC
40119	684	29	ultimately	ultimately	RB
40119	684	30	disappears	disappear	VBZ
40119	684	31	;	;	:
40119	684	32	but	but	CC
40119	684	33	at	at	IN
40119	684	34	the	the	DT
40119	684	35	moment	moment	NN
40119	684	36	of	of	IN
40119	684	37	its	-PRON-	PRP$
40119	684	38	disappearance	disappearance	NN
40119	684	39	a	a	DT
40119	684	40	fresh	fresh	JJ
40119	684	41	patch	patch	NN
40119	684	42	starts	start	VBZ
40119	684	43	from	from	IN
40119	684	44	below	below	RB
40119	684	45	,	,	,
40119	684	46	which	which	WDT
40119	684	47	also	also	RB
40119	684	48	moves	move	VBZ
40119	684	49	in	in	IN
40119	684	50	the	the	DT
40119	684	51	upward	upward	JJ
40119	684	52	direction	direction	NN
40119	684	53	;	;	:
40119	684	54	thus	thus	RB
40119	684	55	there	there	EX
40119	684	56	is	be	VBZ
40119	684	57	formed	form	VBN
40119	684	58	upon	upon	IN
40119	684	59	the	the	DT
40119	684	60	screen	screen	NN
40119	684	61	a	a	DT
40119	684	62	continuous	continuous	JJ
40119	684	63	succession	succession	NN
40119	684	64	of	of	IN
40119	684	65	ascending	ascend	VBG
40119	684	66	bright	bright	JJ
40119	684	67	patches	patch	NNS
40119	684	68	.	.	.
40119	685	1	After	after	IN
40119	685	2	these	these	DT
40119	685	3	have	have	VBP
40119	685	4	been	be	VBN
40119	685	5	observed	observe	VBN
40119	685	6	for	for	IN
40119	685	7	about	about	RB
40119	685	8	a	a	DT
40119	685	9	quarter	quarter	NN
40119	685	10	of	of	IN
40119	685	11	a	a	DT
40119	685	12	minute	minute	NN
40119	685	13	,	,	,
40119	685	14	the	the	DT
40119	685	15	disk	disk	NN
40119	685	16	is	be	VBZ
40119	685	17	suddenly	suddenly	RB
40119	685	18	stopped	stop	VBN
40119	685	19	,	,	,
40119	685	20	and	and	CC
40119	685	21	the	the	DT
40119	685	22	persistence	persistence	NN
40119	685	23	of	of	IN
40119	685	24	the	the	DT
40119	685	25	fallacious	fallacious	JJ
40119	685	26	mental	mental	JJ
40119	685	27	standard	standard	NN
40119	685	28	is	be	VBZ
40119	685	29	at	at	IN
40119	685	30	once	once	RB
40119	685	31	demonstrated	demonstrate	VBN
40119	685	32	.	.	.
40119	686	1	For	for	IN
40119	686	2	the	the	DT
40119	686	3	bright	bright	JJ
40119	686	4	patch	patch	NN
40119	686	5	does	do	VBZ
40119	686	6	not	not	RB
40119	686	7	appear	appear	VB
40119	686	8	to	to	TO
40119	686	9	be	be	VB
40119	686	10	at	at	IN
40119	686	11	rest	rest	NN
40119	686	12	,	,	,
40119	686	13	as	as	IN
40119	686	14	it	-PRON-	PRP
40119	686	15	actually	actually	RB
40119	686	16	is	be	VBZ
40119	686	17	,	,	,
40119	686	18	but	but	CC
40119	686	19	to	to	TO
40119	686	20	creep	creep	VB
40119	686	21	steadily	steadily	RB
40119	686	22	downwards	downwards	RB
40119	686	23	,	,	,
40119	686	24	continuing	continue	VBG
40119	686	25	to	to	TO
40119	686	26	do	do	VB
40119	686	27	so	so	RB
40119	686	28	more	more	RBR
40119	686	29	and	and	CC
40119	686	30	more	more	RBR
40119	686	31	slowly	slowly	RB
40119	686	32	for	for	IN
40119	686	33	perhaps	perhaps	RB
40119	686	34	as	as	RB
40119	686	35	long	long	RB
40119	686	36	as	as	IN
40119	686	37	ten	ten	CD
40119	686	38	seconds	second	NNS
40119	686	39	.	.	.
40119	687	1	The	the	DT
40119	687	2	upward	upward	JJ
40119	687	3	motion	motion	NN
40119	687	4	of	of	IN
40119	687	5	the	the	DT
40119	687	6	bright	bright	JJ
40119	687	7	patches	patch	NNS
40119	687	8	had	have	VBD
40119	687	9	led	lead	VBN
40119	687	10	the	the	DT
40119	687	11	observer	observer	NN
40119	687	12	to	to	TO
40119	687	13	assume	assume	VB
40119	687	14	a	a	DT
40119	687	15	slower	slow	RBR
40119	687	16	upward	upward	JJ
40119	687	17	motion	motion	NN
40119	687	18	as	as	IN
40119	687	19	the	the	DT
40119	687	20	zero	zero	CD
40119	687	21	,	,	,
40119	687	22	or	or	CC
40119	687	23	standard	standard	NN
40119	687	24	of	of	IN
40119	687	25	no	no	DT
40119	687	26	motion	motion	NN
40119	687	27	,	,	,
40119	687	28	and	and	CC
40119	687	29	reference	reference	NN
40119	687	30	of	of	IN
40119	687	31	the	the	DT
40119	687	32	really	really	RB
40119	687	33	stationary	stationary	JJ
40119	687	34	patch	patch	NN
40119	687	35	to	to	IN
40119	687	36	this	this	DT
40119	687	37	physically	physically	RB
40119	687	38	false	false	JJ
40119	687	39	standard	standard	NN
40119	687	40	induces	induce	VBZ
40119	687	41	the	the	DT
40119	687	42	illusion	illusion	NN
40119	687	43	that	that	WDT
40119	687	44	the	the	DT
40119	687	45	patch	patch	NN
40119	687	46	is	be	VBZ
40119	687	47	descending	descend	VBG
40119	687	48	.	.	.
40119	688	1	This	this	DT
40119	688	2	experiment	experiment	NN
40119	688	3	is	be	VBZ
40119	688	4	most	most	RBS
40119	688	5	successful	successful	JJ
40119	688	6	when	when	WRB
40119	688	7	the	the	DT
40119	688	8	bright	bright	JJ
40119	688	9	patches	patch	NNS
40119	688	10	are	be	VBP
40119	688	11	projected	project	VBN
40119	688	12	upon	upon	IN
40119	688	13	the	the	DT
40119	688	14	middle	middle	NN
40119	688	15	of	of	IN
40119	688	16	a	a	DT
40119	688	17	large	large	JJ
40119	688	18	screen	screen	NN
40119	688	19	.	.	.
40119	689	1	The	the	DT
40119	689	2	disk	disk	NN
40119	689	3	should	should	MD
40119	689	4	turn	turn	VB
40119	689	5	about	about	RB
40119	689	6	three	three	CD
40119	689	7	times	time	NNS
40119	689	8	in	in	IN
40119	689	9	a	a	DT
40119	689	10	second	second	JJ
40119	689	11	,	,	,
40119	689	12	and	and	CC
40119	689	13	the	the	DT
40119	689	14	room	room	NN
40119	689	15	should	should	MD
40119	689	16	be	be	VB
40119	689	17	feebly	feebly	RB
40119	689	18	illuminated	illuminate	VBN
40119	689	19	,	,	,
40119	689	20	but	but	CC
40119	689	21	not	not	RB
40119	689	22	quite	quite	RB
40119	689	23	dark	dark	JJ
40119	689	24	.	.	.
40119	690	1	[	[	-LRB-
40119	690	2	Illustration	illustration	NN
40119	690	3	:	:	:
40119	690	4	_	_	NNP
40119	690	5	Fig	Fig	NNP
40119	690	6	.	.	.
40119	691	1	33.--Illusions	33.--illusions	CD
40119	691	2	of	of	IN
40119	691	3	Motion	Motion	NNP
40119	691	4	.	.	.
40119	691	5	_	_	NNP
40119	691	6	]	]	-RRB-
40119	691	7	A	a	DT
40119	691	8	very	very	RB
40119	691	9	remarkable	remarkable	JJ
40119	691	10	illusion	illusion	NN
40119	691	11	which	which	WDT
40119	691	12	no	no	RB
40119	691	13	doubt	doubt	RB
40119	691	14	depends	depend	VBZ
40119	691	15	upon	upon	IN
40119	691	16	the	the	DT
40119	691	17	same	same	JJ
40119	691	18	principle	principle	NN
40119	691	19	as	as	IN
40119	691	20	the	the	DT
40119	691	21	last	last	JJ
40119	691	22	,	,	,
40119	691	23	though	though	IN
40119	691	24	its	-PRON-	PRP$
40119	691	25	form	form	NN
40119	691	26	is	be	VBZ
40119	691	27	entirely	entirely	RB
40119	691	28	different	different	JJ
40119	691	29	,	,	,
40119	691	30	is	be	VBZ
40119	691	31	that	that	DT
40119	691	32	to	to	TO
40119	691	33	which	which	WDT
40119	691	34	the	the	DT
40119	691	35	diagram	diagram	NN
40119	691	36	Fig	Fig	NNP
40119	691	37	.	.	.
40119	692	1	33	33	CD
40119	692	2	relates	relate	NNS
40119	692	3	.	.	.
40119	693	1	So	so	RB
40119	693	2	far	far	RB
40119	693	3	as	as	IN
40119	693	4	I	-PRON-	PRP
40119	693	5	am	be	VBP
40119	693	6	aware	aware	JJ
40119	693	7	,	,	,
40119	693	8	it	-PRON-	PRP
40119	693	9	has	have	VBZ
40119	693	10	not	not	RB
40119	693	11	before	before	RB
40119	693	12	been	be	VBN
40119	693	13	noticed	notice	VBN
40119	693	14	.	.	.
40119	694	1	Two	two	CD
40119	694	2	intersecting	intersect	VBG
40119	694	3	straight	straight	JJ
40119	694	4	lines	line	NNS
40119	694	5	,	,	,
40119	694	6	the	the	DT
40119	694	7	one	one	CD
40119	694	8	upright	upright	NN
40119	694	9	and	and	CC
40119	694	10	the	the	DT
40119	694	11	other	other	JJ
40119	694	12	sloping	sloping	NN
40119	694	13	,	,	,
40119	694	14	as	as	IN
40119	694	15	shown	show	VBN
40119	694	16	in	in	IN
40119	694	17	the	the	DT
40119	694	18	figure	figure	NN
40119	694	19	,	,	,
40119	694	20	are	be	VBP
40119	694	21	drawn	draw	VBN
40119	694	22	upon	upon	IN
40119	694	23	a	a	DT
40119	694	24	card	card	NN
40119	694	25	.	.	.
40119	695	1	The	the	DT
40119	695	2	card	card	NN
40119	695	3	is	be	VBZ
40119	695	4	to	to	TO
40119	695	5	be	be	VB
40119	695	6	held	hold	VBN
40119	695	7	vertically	vertically	RB
40119	695	8	before	before	IN
40119	695	9	the	the	DT
40119	695	10	eyes	eye	NNS
40119	695	11	at	at	IN
40119	695	12	the	the	DT
40119	695	13	distance	distance	NN
40119	695	14	of	of	IN
40119	695	15	most	most	JJS
40119	695	16	distinct	distinct	JJ
40119	695	17	vision	vision	NN
40119	695	18	,	,	,
40119	695	19	and	and	CC
40119	695	20	waved	wave	VBD
40119	695	21	up	up	RP
40119	695	22	and	and	CC
40119	695	23	down	down	RB
40119	695	24	through	through	IN
40119	695	25	a	a	DT
40119	695	26	distance	distance	NN
40119	695	27	of	of	IN
40119	695	28	a	a	DT
40119	695	29	few	few	JJ
40119	695	30	inches	inch	NNS
40119	695	31	.	.	.
40119	696	1	The	the	DT
40119	696	2	oblique	oblique	JJ
40119	696	3	line	line	NN
40119	696	4	will	will	MD
40119	696	5	then	then	RB
40119	696	6	appear	appear	VB
40119	696	7	to	to	TO
40119	696	8	oscillate	oscillate	VB
40119	696	9	transversely	transversely	RB
40119	696	10	,	,	,
40119	696	11	as	as	IN
40119	696	12	if	if	IN
40119	696	13	it	-PRON-	PRP
40119	696	14	were	be	VBD
40119	696	15	not	not	RB
40119	696	16	rigidly	rigidly	RB
40119	696	17	attached	attach	VBN
40119	696	18	to	to	IN
40119	696	19	the	the	DT
40119	696	20	card	card	NN
40119	696	21	.	.	.
40119	697	1	This	this	DT
40119	697	2	is	be	VBZ
40119	697	3	the	the	DT
40119	697	4	result	result	NN
40119	697	5	of	of	IN
40119	697	6	underestimating	underestimate	VBG
40119	697	7	the	the	DT
40119	697	8	speed	speed	NN
40119	697	9	at	at	IN
40119	697	10	which	which	WDT
40119	697	11	the	the	DT
40119	697	12	card	card	NN
40119	697	13	is	be	VBZ
40119	697	14	moved	move	VBN
40119	697	15	.	.	.
40119	698	1	Rather	rather	RB
40119	698	2	than	than	IN
40119	698	3	recognise	recognise	VB
40119	698	4	the	the	DT
40119	698	5	true	true	JJ
40119	698	6	state	state	NN
40119	698	7	of	of	IN
40119	698	8	things	thing	NNS
40119	698	9	,	,	,
40119	698	10	the	the	DT
40119	698	11	mind	mind	NN
40119	698	12	prefers	prefer	VBZ
40119	698	13	to	to	TO
40119	698	14	accept	accept	VB
40119	698	15	the	the	DT
40119	698	16	suggestion	suggestion	NN
40119	698	17	that	that	IN
40119	698	18	the	the	DT
40119	698	19	upward	upward	JJ
40119	698	20	or	or	CC
40119	698	21	downward	downward	JJ
40119	698	22	movement	movement	NN
40119	698	23	of	of	IN
40119	698	24	the	the	DT
40119	698	25	point	point	NN
40119	698	26	of	of	IN
40119	698	27	intersection	intersection	NN
40119	698	28	is	be	VBZ
40119	698	29	in	in	IN
40119	698	30	part	part	NN
40119	698	31	due	due	JJ
40119	698	32	to	to	IN
40119	698	33	oppositely	oppositely	RB
40119	698	34	directed	direct	VBN
40119	698	35	horizontal	horizontal	JJ
40119	698	36	movements	movement	NNS
40119	698	37	of	of	IN
40119	698	38	the	the	DT
40119	698	39	lines	line	NNS
40119	698	40	themselves	-PRON-	PRP
40119	698	41	upon	upon	IN
40119	698	42	the	the	DT
40119	698	43	surface	surface	NN
40119	698	44	of	of	IN
40119	698	45	the	the	DT
40119	698	46	card	card	NN
40119	698	47	.	.	.
40119	699	1	When	when	WRB
40119	699	2	the	the	DT
40119	699	3	card	card	NN
40119	699	4	is	be	VBZ
40119	699	5	descending	descend	VBG
40119	699	6	the	the	DT
40119	699	7	vertical	vertical	JJ
40119	699	8	line	line	NN
40119	699	9	is	be	VBZ
40119	699	10	supposed	suppose	VBN
40119	699	11	to	to	TO
40119	699	12	slide	slide	VB
40119	699	13	a	a	DT
40119	699	14	little	little	JJ
40119	699	15	to	to	IN
40119	699	16	the	the	DT
40119	699	17	right	right	NN
40119	699	18	and	and	CC
40119	699	19	the	the	DT
40119	699	20	oblique	oblique	JJ
40119	699	21	line	line	NN
40119	699	22	to	to	IN
40119	699	23	the	the	DT
40119	699	24	left	left	NN
40119	699	25	,	,	,
40119	699	26	which	which	WDT
40119	699	27	would	would	MD
40119	699	28	have	have	VB
40119	699	29	the	the	DT
40119	699	30	effect	effect	NN
40119	699	31	of	of	IN
40119	699	32	lowering	lower	VBG
40119	699	33	their	-PRON-	PRP$
40119	699	34	point	point	NN
40119	699	35	of	of	IN
40119	699	36	intersection	intersection	NN
40119	699	37	independently	independently	RB
40119	699	38	of	of	IN
40119	699	39	the	the	DT
40119	699	40	downward	downward	JJ
40119	699	41	movement	movement	NN
40119	699	42	of	of	IN
40119	699	43	the	the	DT
40119	699	44	card	card	NN
40119	699	45	itself	-PRON-	PRP
40119	699	46	.	.	.
40119	700	1	When	when	WRB
40119	700	2	the	the	DT
40119	700	3	card	card	NN
40119	700	4	ascends	ascend	VBZ
40119	700	5	,	,	,
40119	700	6	these	these	DT
40119	700	7	horizontal	horizontal	JJ
40119	700	8	movements	movement	NNS
40119	700	9	are	be	VBP
40119	700	10	supposed	suppose	VBN
40119	700	11	to	to	TO
40119	700	12	be	be	VB
40119	700	13	reversed	reverse	VBN
40119	700	14	,	,	,
40119	700	15	and	and	CC
40119	700	16	the	the	DT
40119	700	17	point	point	NN
40119	700	18	of	of	IN
40119	700	19	intersection	intersection	NN
40119	700	20	consequently	consequently	RB
40119	700	21	raised	raise	VBN
40119	700	22	.	.	.
40119	701	1	The	the	DT
40119	701	2	assumption	assumption	NN
40119	701	3	is	be	VBZ
40119	701	4	exactly	exactly	RB
40119	701	5	analogous	analogous	JJ
40119	701	6	to	to	IN
40119	701	7	that	that	DT
40119	701	8	made	make	VBD
40119	701	9	when	when	WRB
40119	701	10	an	an	DT
40119	701	11	angle	angle	NN
40119	701	12	of	of	IN
40119	701	13	slope	slope	NN
40119	701	14	is	be	VBZ
40119	701	15	unwittingly	unwittingly	RB
40119	701	16	minimised	minimise	VBN
40119	701	17	.	.	.
40119	702	1	Another	another	DT
40119	702	2	example	example	NN
40119	702	3	of	of	IN
40119	702	4	the	the	DT
40119	702	5	instability	instability	NN
40119	702	6	of	of	IN
40119	702	7	a	a	DT
40119	702	8	mental	mental	JJ
40119	702	9	standard	standard	NN
40119	702	10	occurs	occur	VBZ
40119	702	11	in	in	IN
40119	702	12	the	the	DT
40119	702	13	estimation	estimation	NN
40119	702	14	of	of	IN
40119	702	15	luminosity	luminosity	NN
40119	702	16	.	.	.
40119	703	1	The	the	DT
40119	703	2	luminosity	luminosity	NN
40119	703	3	of	of	IN
40119	703	4	a	a	DT
40119	703	5	bright	bright	JJ
40119	703	6	object	object	NN
40119	703	7	,	,	,
40119	703	8	if	if	IN
40119	703	9	reckoned	reckon	VBN
40119	703	10	in	in	IN
40119	703	11	terms	term	NNS
40119	703	12	of	of	IN
40119	703	13	the	the	DT
40119	703	14	same	same	JJ
40119	703	15	unit	unit	NN
40119	703	16	as	as	IN
40119	703	17	that	that	DT
40119	703	18	applied	apply	VBD
40119	703	19	in	in	IN
40119	703	20	judging	judging	NN
40119	703	21	of	of	IN
40119	703	22	a	a	DT
40119	703	23	less	less	RBR
40119	703	24	bright	bright	JJ
40119	703	25	one	one	NN
40119	703	26	,	,	,
40119	703	27	would	would	MD
40119	703	28	appear	appear	VB
40119	703	29	to	to	TO
40119	703	30	be	be	VB
40119	703	31	greater	great	JJR
40119	703	32	than	than	IN
40119	703	33	it	-PRON-	PRP
40119	703	34	actually	actually	RB
40119	703	35	does	do	VBZ
40119	703	36	appear	appear	VB
40119	703	37	,	,	,
40119	703	38	and	and	CC
40119	703	39	this	this	DT
40119	703	40	quite	quite	RB
40119	703	41	independently	independently	RB
40119	703	42	of	of	IN
40119	703	43	any	any	DT
40119	703	44	effects	effect	NNS
40119	703	45	of	of	IN
40119	703	46	fatigue	fatigue	NN
40119	703	47	.	.	.
40119	704	1	[	[	-LRB-
40119	704	2	Illustration	illustration	NN
40119	704	3	:	:	:
40119	704	4	_	_	NNP
40119	704	5	Fig	Fig	NNP
40119	704	6	.	.	.
40119	705	1	34.--Illusion	34.--illusion	CD
40119	705	2	of	of	IN
40119	705	3	Luminosity	Luminosity	NNP
40119	705	4	.	.	.
40119	705	5	_	_	NNP
40119	705	6	]	]	-RRB-
40119	705	7	The	the	DT
40119	705	8	fact	fact	NN
40119	705	9	is	be	VBZ
40119	705	10	well	well	RB
40119	705	11	illustrated	illustrate	VBN
40119	705	12	by	by	IN
40119	705	13	a	a	DT
40119	705	14	familiar	familiar	JJ
40119	705	15	experiment	experiment	NN
40119	705	16	.	.	.
40119	706	1	Fig	fig	NN
40119	706	2	.	.	.
40119	707	1	34	34	CD
40119	707	2	is	be	VBZ
40119	707	3	photographed	photograph	VBN
40119	707	4	from	from	IN
40119	707	5	a	a	DT
40119	707	6	transparency	transparency	NN
40119	707	7	made	make	VBN
40119	707	8	by	by	IN
40119	707	9	superposing	superpose	VBG
40119	707	10	several	several	JJ
40119	707	11	different	different	JJ
40119	707	12	lengths	length	NNS
40119	707	13	of	of	IN
40119	707	14	gelatine	gelatine	NN
40119	707	15	film	film	NN
40119	707	16	so	so	IN
40119	707	17	as	as	IN
40119	707	18	to	to	TO
40119	707	19	form	form	VB
40119	707	20	a	a	DT
40119	707	21	series	series	NN
40119	707	22	of	of	IN
40119	707	23	steps	step	NNS
40119	707	24	.	.	.
40119	708	1	At	at	IN
40119	708	2	the	the	DT
40119	708	3	right	right	JJ
40119	708	4	-	-	HYPH
40119	708	5	hand	hand	NN
40119	708	6	end	end	NN
40119	708	7	of	of	IN
40119	708	8	the	the	DT
40119	708	9	image	image	NN
40119	708	10	the	the	DT
40119	708	11	light	light	NN
40119	708	12	has	have	VBZ
40119	708	13	passed	pass	VBN
40119	708	14	through	through	IN
40119	708	15	only	only	RB
40119	708	16	one	one	CD
40119	708	17	layer	layer	NN
40119	708	18	of	of	IN
40119	708	19	the	the	DT
40119	708	20	film	film	NN
40119	708	21	;	;	:
40119	708	22	in	in	IN
40119	708	23	the	the	DT
40119	708	24	next	next	JJ
40119	708	25	division	division	NN
40119	708	26	it	-PRON-	PRP
40119	708	27	has	have	VBZ
40119	708	28	traversed	traverse	VBN
40119	708	29	two	two	CD
40119	708	30	layers	layer	NNS
40119	708	31	,	,	,
40119	708	32	in	in	IN
40119	708	33	the	the	DT
40119	708	34	next	next	JJ
40119	708	35	,	,	,
40119	708	36	three	three	CD
40119	708	37	,	,	,
40119	708	38	and	and	CC
40119	708	39	in	in	IN
40119	708	40	the	the	DT
40119	708	41	last	last	JJ
40119	708	42	,	,	,
40119	708	43	four	four	CD
40119	708	44	.	.	.
40119	709	1	The	the	DT
40119	709	2	luminosity	luminosity	NN
40119	709	3	of	of	IN
40119	709	4	each	each	DT
40119	709	5	of	of	IN
40119	709	6	the	the	DT
40119	709	7	four	four	CD
40119	709	8	squares	square	NNS
40119	709	9	into	into	IN
40119	709	10	which	which	WDT
40119	709	11	the	the	DT
40119	709	12	oblong	oblong	NN
40119	709	13	is	be	VBZ
40119	709	14	divided	divide	VBN
40119	709	15	is	be	VBZ
40119	709	16	,	,	,
40119	709	17	in	in	IN
40119	709	18	a	a	DT
40119	709	19	physical	physical	JJ
40119	709	20	sense	sense	NN
40119	709	21	,	,	,
40119	709	22	quite	quite	RB
40119	709	23	uniform	uniform	JJ
40119	709	24	,	,	,
40119	709	25	but	but	CC
40119	709	26	the	the	DT
40119	709	27	mental	mental	JJ
40119	709	28	standard	standard	NN
40119	709	29	of	of	IN
40119	709	30	luminosity	luminosity	NN
40119	709	31	varies	vary	VBZ
40119	709	32	for	for	IN
40119	709	33	different	different	JJ
40119	709	34	parts	part	NNS
40119	709	35	of	of	IN
40119	709	36	the	the	DT
40119	709	37	image	image	NN
40119	709	38	,	,	,
40119	709	39	increasing	increase	VBG
40119	709	40	or	or	CC
40119	709	41	decreasing	decrease	VBG
40119	709	42	,	,	,
40119	709	43	as	as	IN
40119	709	44	the	the	DT
40119	709	45	case	case	NN
40119	709	46	may	may	MD
40119	709	47	be	be	VB
40119	709	48	,	,	,
40119	709	49	not	not	RB
40119	709	50	_	_	NNP
40119	709	51	per	per	IN
40119	709	52	saltum	saltum	NN
40119	709	53	_	_	NNP
40119	709	54	,	,	,
40119	709	55	but	but	CC
40119	709	56	smoothly	smoothly	RB
40119	709	57	and	and	CC
40119	709	58	continuously	continuously	RB
40119	709	59	,	,	,
40119	709	60	with	with	IN
40119	709	61	the	the	DT
40119	709	62	result	result	NN
40119	709	63	that	that	IN
40119	709	64	each	each	DT
40119	709	65	square	square	NN
40119	709	66	looks	look	VBZ
40119	709	67	brighter	bright	JJR
40119	709	68	towards	towards	IN
40119	709	69	the	the	DT
40119	709	70	left	left	NN
40119	709	71	than	than	IN
40119	709	72	towards	towards	IN
40119	709	73	the	the	DT
40119	709	74	right	right	NN
40119	709	75	.	.	.
40119	710	1	The	the	DT
40119	710	2	appearance	appearance	NN
40119	710	3	,	,	,
40119	710	4	which	which	WDT
40119	710	5	is	be	VBZ
40119	710	6	often	often	RB
40119	710	7	likened	liken	VBN
40119	710	8	to	to	IN
40119	710	9	that	that	DT
40119	710	10	presented	present	VBN
40119	710	11	by	by	IN
40119	710	12	a	a	DT
40119	710	13	fragment	fragment	NN
40119	710	14	of	of	IN
40119	710	15	a	a	DT
40119	710	16	fluted	fluted	JJ
40119	710	17	column	column	NN
40119	710	18	,	,	,
40119	710	19	is	be	VBZ
40119	710	20	equally	equally	RB
40119	710	21	well	well	RB
40119	710	22	shown	show	VBN
40119	710	23	when	when	WRB
40119	710	24	the	the	DT
40119	710	25	diagram	diagram	NN
40119	710	26	is	be	VBZ
40119	710	27	illuminated	illuminate	VBN
40119	710	28	instantaneously	instantaneously	RB
40119	710	29	by	by	IN
40119	710	30	an	an	DT
40119	710	31	electric	electric	JJ
40119	710	32	spark	spark	NN
40119	710	33	,	,	,
40119	710	34	and	and	CC
40119	710	35	can	can	MD
40119	710	36	not	not	RB
40119	710	37	,	,	,
40119	710	38	therefore	therefore	RB
40119	710	39	,	,	,
40119	710	40	be	be	VB
40119	710	41	accounted	account	VBN
40119	710	42	for	for	IN
40119	710	43	by	by	IN
40119	710	44	retinal	retinal	JJ
40119	710	45	fatigue	fatigue	NN
40119	710	46	.	.	.
40119	711	1	If	if	IN
40119	711	2	the	the	DT
40119	711	3	squares	square	NNS
40119	711	4	are	be	VBP
40119	711	5	separated	separate	VBN
40119	711	6	from	from	IN
40119	711	7	one	one	CD
40119	711	8	another	another	DT
40119	711	9	by	by	IN
40119	711	10	distinct	distinct	JJ
40119	711	11	lines	line	NNS
40119	711	12	of	of	IN
40119	711	13	demarcation	demarcation	NN
40119	711	14	,	,	,
40119	711	15	however	however	WRB
40119	711	16	fine	fine	JJ
40119	711	17	,	,	,
40119	711	18	the	the	DT
40119	711	19	standard	standard	NN
40119	711	20	of	of	IN
40119	711	21	luminosity	luminosity	NN
40119	711	22	becomes	become	VBZ
40119	711	23	uniform	uniform	NN
40119	711	24	for	for	IN
40119	711	25	each	each	DT
40119	711	26	square	square	NN
40119	711	27	,	,	,
40119	711	28	and	and	CC
40119	711	29	the	the	DT
40119	711	30	illusion	illusion	NN
40119	711	31	vanishes	vanishe	NNS
40119	711	32	.	.	.
40119	712	1	This	this	DT
40119	712	2	fact	fact	NN
40119	712	3	sufficiently	sufficiently	RB
40119	712	4	disposes	dispose	VBZ
40119	712	5	of	of	IN
40119	712	6	the	the	DT
40119	712	7	hypothesis	hypothesis	NN
40119	712	8	which	which	WDT
40119	712	9	has	have	VBZ
40119	712	10	been	be	VBN
40119	712	11	advanced	advance	VBN
40119	712	12	to	to	IN
40119	712	13	the	the	DT
40119	712	14	effect	effect	NN
40119	712	15	that	that	WDT
40119	712	16	the	the	DT
40119	712	17	phenomenon	phenomenon	NN
40119	712	18	is	be	VBZ
40119	712	19	due	due	JJ
40119	712	20	to	to	IN
40119	712	21	physiological	physiological	JJ
40119	712	22	causes	cause	NNS
40119	712	23	.	.	.
40119	713	1	I	-PRON-	PRP
40119	713	2	now	now	RB
40119	713	3	propose	propose	VBP
40119	713	4	to	to	TO
40119	713	5	discuss	discuss	VB
40119	713	6	a	a	DT
40119	713	7	curious	curious	JJ
40119	713	8	consequence	consequence	NN
40119	713	9	of	of	IN
40119	713	10	the	the	DT
40119	713	11	fluctuation	fluctuation	NN
40119	713	12	of	of	IN
40119	713	13	unaided	unaided	JJ
40119	713	14	judgment	judgment	NN
40119	713	15	as	as	IN
40119	713	16	regards	regard	VBZ
40119	713	17	the	the	DT
40119	713	18	purity	purity	NN
40119	713	19	of	of	IN
40119	713	20	a	a	DT
40119	713	21	colour	colour	NN
40119	713	22	.	.	.
40119	714	1	When	when	WRB
40119	714	2	any	any	DT
40119	714	3	colour	colour	NN
40119	714	4	occupies	occupy	VBZ
40119	714	5	a	a	DT
40119	714	6	predominant	predominant	JJ
40119	714	7	place	place	NN
40119	714	8	in	in	IN
40119	714	9	the	the	DT
40119	714	10	field	field	NN
40119	714	11	of	of	IN
40119	714	12	vision	vision	NN
40119	714	13	,	,	,
40119	714	14	we	-PRON-	PRP
40119	714	15	are	be	VBP
40119	714	16	apt	apt	JJ
40119	714	17	to	to	TO
40119	714	18	consider	consider	VB
40119	714	19	it	-PRON-	PRP
40119	714	20	as	as	IN
40119	714	21	being	be	VBG
40119	714	22	less	less	RBR
40119	714	23	pure	pure	JJ
40119	714	24	,	,	,
40119	714	25	or	or	CC
40119	714	26	paler	paler	NN
40119	714	27	,	,	,
40119	714	28	than	than	IN
40119	714	29	we	-PRON-	PRP
40119	714	30	should	should	MD
40119	714	31	if	if	IN
40119	714	32	it	-PRON-	PRP
40119	714	33	were	be	VBD
40119	714	34	less	less	RBR
40119	714	35	conspicuous	conspicuous	JJ
40119	714	36	,	,	,
40119	714	37	our	-PRON-	PRP$
40119	714	38	standard	standard	NN
40119	714	39	of	of	IN
40119	714	40	whiteness	whiteness	NN
40119	714	41	tending	tend	VBG
40119	714	42	to	to	TO
40119	714	43	approximate	approximate	VB
40119	714	44	itself	-PRON-	PRP
40119	714	45	to	to	IN
40119	714	46	the	the	DT
40119	714	47	colour	colour	NN
40119	714	48	in	in	IN
40119	714	49	question	question	NN
40119	714	50	.	.	.
40119	715	1	For	for	IN
40119	715	2	the	the	DT
40119	715	3	sake	sake	NN
40119	715	4	of	of	IN
40119	715	5	clearness	clearness	NN
40119	715	6	let	let	VBD
40119	715	7	us	-PRON-	PRP
40119	715	8	first	first	RB
40119	715	9	confine	confine	VB
40119	715	10	our	-PRON-	PRP$
40119	715	11	attention	attention	NN
40119	715	12	to	to	IN
40119	715	13	a	a	DT
40119	715	14	definite	definite	JJ
40119	715	15	colour	colour	NN
40119	715	16	--	--	:
40119	715	17	say	say	VBP
40119	715	18	red	red	NN
40119	715	19	.	.	.
40119	716	1	An	an	DT
40119	716	2	absolutely	absolutely	RB
40119	716	3	pure	pure	JJ
40119	716	4	red	red	NN
40119	716	5	is	be	VBZ
40119	716	6	one	one	NN
40119	716	7	that	that	WDT
40119	716	8	is	be	VBZ
40119	716	9	entirely	entirely	RB
40119	716	10	free	free	JJ
40119	716	11	from	from	IN
40119	716	12	any	any	DT
40119	716	13	admixture	admixture	NN
40119	716	14	of	of	IN
40119	716	15	white	white	JJ
40119	716	16	;	;	:
40119	716	17	in	in	IN
40119	716	18	proportion	proportion	NN
40119	716	19	as	as	IN
40119	716	20	it	-PRON-	PRP
40119	716	21	contains	contain	VBZ
40119	716	22	more	more	JJR
40119	716	23	and	and	CC
40119	716	24	more	more	RBR
40119	716	25	white	white	JJ
40119	716	26	,	,	,
40119	716	27	the	the	DT
40119	716	28	more	more	JJR
40119	716	29	impure	impure	NN
40119	716	30	,	,	,
40119	716	31	or	or	CC
40119	716	32	in	in	IN
40119	716	33	other	other	JJ
40119	716	34	words	word	NNS
40119	716	35	,	,	,
40119	716	36	the	the	DT
40119	716	37	more	more	RBR
40119	716	38	pale	pale	JJ
40119	716	39	does	do	VBZ
40119	716	40	it	-PRON-	PRP
40119	716	41	become	become	VB
40119	716	42	,	,	,
40119	716	43	until	until	IN
40119	716	44	at	at	IN
40119	716	45	last	last	JJ
40119	716	46	all	all	DT
40119	716	47	trace	trace	NN
40119	716	48	of	of	IN
40119	716	49	perceptible	perceptible	JJ
40119	716	50	redness	redness	NN
40119	716	51	is	be	VBZ
40119	716	52	lost	lose	VBN
40119	716	53	and	and	CC
40119	716	54	the	the	DT
40119	716	55	colour	colour	NN
40119	716	56	is	be	VBZ
40119	716	57	indistinguishable	indistinguishable	JJ
40119	716	58	from	from	IN
40119	716	59	white	white	JJ
40119	716	60	.	.	.
40119	717	1	[	[	-LRB-
40119	717	2	Illustration	illustration	NN
40119	717	3	:	:	:
40119	717	4	_	_	NNP
40119	717	5	Fig	Fig	NNP
40119	717	6	.	.	.
40119	718	1	35.--Illusion	35.--illusion	CD
40119	718	2	of	of	IN
40119	718	3	Colour	Colour	NNP
40119	718	4	.	.	.
40119	718	5	_	_	NNP
40119	718	6	]	]	-RRB-
40119	718	7	A	a	DT
40119	718	8	convenient	convenient	JJ
40119	718	9	way	way	NN
40119	718	10	of	of	IN
40119	718	11	picturing	picture	VBG
40119	718	12	the	the	DT
40119	718	13	scale	scale	NN
40119	718	14	of	of	IN
40119	718	15	purity	purity	NN
40119	718	16	is	be	VBZ
40119	718	17	shown	show	VBN
40119	718	18	in	in	IN
40119	718	19	Fig	Fig	NNP
40119	718	20	35	35	CD
40119	718	21	.	.	.
40119	719	1	The	the	DT
40119	719	2	shaded	shaded	JJ
40119	719	3	oblong	oblong	NN
40119	719	4	may	may	MD
40119	719	5	be	be	VB
40119	719	6	supposed	suppose	VBN
40119	719	7	to	to	TO
40119	719	8	represent	represent	VB
40119	719	9	a	a	DT
40119	719	10	painted	paint	VBN
40119	719	11	strip	strip	NN
40119	719	12	of	of	IN
40119	719	13	cardboard	cardboard	NN
40119	719	14	or	or	CC
40119	719	15	paper	paper	NN
40119	719	16	.	.	.
40119	720	1	At	at	IN
40119	720	2	the	the	DT
40119	720	3	extreme	extreme	JJ
40119	720	4	right	right	JJ
40119	720	5	hand	hand	NN
40119	720	6	end	end	VB
40119	720	7	the	the	DT
40119	720	8	colour	colour	NN
40119	720	9	is	be	VBZ
40119	720	10	supposed	suppose	VBN
40119	720	11	to	to	TO
40119	720	12	be	be	VB
40119	720	13	absolutely	absolutely	RB
40119	720	14	pure	pure	JJ
40119	720	15	red	red	JJ
40119	720	16	;	;	:
40119	720	17	towards	towards	IN
40119	720	18	the	the	DT
40119	720	19	left	left	NN
40119	720	20	the	the	DT
40119	720	21	red	red	NN
40119	720	22	gradually	gradually	RB
40119	720	23	becomes	become	VBZ
40119	720	24	paler	paler	NN
40119	720	25	or	or	CC
40119	720	26	more	more	JJR
40119	720	27	dilute	dilute	NN
40119	720	28	,	,	,
40119	720	29	and	and	CC
40119	720	30	at	at	IN
40119	720	31	the	the	DT
40119	720	32	middle	middle	NN
40119	720	33	of	of	IN
40119	720	34	the	the	DT
40119	720	35	diagram	diagram	NN
40119	720	36	it	-PRON-	PRP
40119	720	37	has	have	VBZ
40119	720	38	merged	merge	VBN
40119	720	39	into	into	IN
40119	720	40	perfect	perfect	JJ
40119	720	41	whiteness	whiteness	NN
40119	720	42	.	.	.
40119	721	1	The	the	DT
40119	721	2	figures	figure	NNS
40119	721	3	0	0	CD
40119	721	4	to	to	IN
40119	721	5	100	100	CD
40119	721	6	from	from	IN
40119	721	7	left	leave	VBN
40119	721	8	to	to	IN
40119	721	9	right	right	JJ
40119	721	10	denote	denote	VB
40119	721	11	the	the	DT
40119	721	12	percentage	percentage	NN
40119	721	13	of	of	IN
40119	721	14	free	free	JJ
40119	721	15	red	red	NN
40119	721	16	contained	contain	VBN
40119	721	17	in	in	IN
40119	721	18	the	the	DT
40119	721	19	mixture	mixture	NN
40119	721	20	at	at	IN
40119	721	21	different	different	JJ
40119	721	22	parts	part	NNS
40119	721	23	of	of	IN
40119	721	24	the	the	DT
40119	721	25	scale	scale	NN
40119	721	26	;	;	:
40119	721	27	the	the	DT
40119	721	28	luminosity	luminosity	NN
40119	721	29	is	be	VBZ
40119	721	30	supposed	suppose	VBN
40119	721	31	to	to	TO
40119	721	32	be	be	VB
40119	721	33	uniform	uniform	JJ
40119	721	34	throughout	throughout	IN
40119	721	35	.	.	.
40119	722	1	Now	now	RB
40119	722	2	the	the	DT
40119	722	3	white	white	JJ
40119	722	4	light	light	NN
40119	722	5	with	with	IN
40119	722	6	which	which	WDT
40119	722	7	the	the	DT
40119	722	8	red	red	NN
40119	722	9	is	be	VBZ
40119	722	10	diluted	dilute	VBN
40119	722	11	may	may	MD
40119	722	12	be	be	VB
40119	722	13	regarded	regard	VBN
40119	722	14	as	as	IN
40119	722	15	consisting	consist	VBG
40119	722	16	of	of	IN
40119	722	17	two	two	CD
40119	722	18	parts	part	NNS
40119	722	19	,	,	,
40119	722	20	one	one	CD
40119	722	21	of	of	IN
40119	722	22	which	which	WDT
40119	722	23	is	be	VBZ
40119	722	24	of	of	IN
40119	722	25	exactly	exactly	RB
40119	722	26	the	the	DT
40119	722	27	same	same	JJ
40119	722	28	hue	hue	NN
40119	722	29	as	as	IN
40119	722	30	the	the	DT
40119	722	31	pure	pure	JJ
40119	722	32	red	red	NN
40119	722	33	itself	-PRON-	PRP
40119	722	34	,	,	,
40119	722	35	and	and	CC
40119	722	36	the	the	DT
40119	722	37	other	other	JJ
40119	722	38	an	an	DT
40119	722	39	equivalent	equivalent	JJ
40119	722	40	proportion	proportion	NN
40119	722	41	of	of	IN
40119	722	42	the	the	DT
40119	722	43	complementary	complementary	JJ
40119	722	44	colour	colour	NN
40119	722	45	,	,	,
40119	722	46	which	which	WDT
40119	722	47	in	in	IN
40119	722	48	the	the	DT
40119	722	49	present	present	JJ
40119	722	50	case	case	NN
40119	722	51	will	will	MD
40119	722	52	be	be	VB
40119	722	53	greenish	greenish	NN
40119	722	54	-	-	HYPH
40119	722	55	blue	blue	JJ
40119	722	56	.	.	.
40119	723	1	The	the	DT
40119	723	2	fact	fact	NN
40119	723	3	therefore	therefore	RB
40119	723	4	really	really	RB
40119	723	5	is	be	VBZ
40119	723	6	that	that	DT
40119	723	7	,	,	,
40119	723	8	as	as	IN
40119	723	9	we	-PRON-	PRP
40119	723	10	pass	pass	VBP
40119	723	11	along	along	IN
40119	723	12	the	the	DT
40119	723	13	scale	scale	NN
40119	723	14	from	from	IN
40119	723	15	100	100	CD
40119	723	16	to	to	IN
40119	723	17	0	0	CD
40119	723	18	,	,	,
40119	723	19	the	the	DT
40119	723	20	_	_	NNP
40119	723	21	total	total	NN
40119	723	22	_	_	NNP
40119	723	23	quantity	quantity	NN
40119	723	24	of	of	IN
40119	723	25	red	red	NN
40119	723	26	in	in	IN
40119	723	27	the	the	DT
40119	723	28	mixture	mixture	NN
40119	723	29	is	be	VBZ
40119	723	30	not	not	RB
40119	723	31	reduced	reduce	VBN
40119	723	32	to	to	IN
40119	723	33	nothing	nothing	NN
40119	723	34	,	,	,
40119	723	35	but	but	CC
40119	723	36	only	only	RB
40119	723	37	to	to	IN
40119	723	38	one	one	CD
40119	723	39	half	half	NN
40119	723	40	,	,	,
40119	723	41	while	while	IN
40119	723	42	at	at	IN
40119	723	43	the	the	DT
40119	723	44	same	same	JJ
40119	723	45	time	time	NN
40119	723	46	greenish	greenish	NN
40119	723	47	-	-	HYPH
40119	723	48	blue	blue	JJ
40119	723	49	is	be	VBZ
40119	723	50	added	add	VBN
40119	723	51	in	in	IN
40119	723	52	proportions	proportion	NNS
40119	723	53	increasing	increase	VBG
40119	723	54	from	from	IN
40119	723	55	nought	nought	NN
40119	723	56	at	at	IN
40119	723	57	the	the	DT
40119	723	58	extreme	extreme	JJ
40119	723	59	right	right	NN
40119	723	60	to	to	IN
40119	723	61	50	50	CD
40119	723	62	per	per	NN
40119	723	63	cent	cent	NN
40119	723	64	.	.	.
40119	724	1	of	of	IN
40119	724	2	the	the	DT
40119	724	3	whole	whole	NN
40119	724	4	at	at	IN
40119	724	5	the	the	DT
40119	724	6	middle	middle	NN
40119	724	7	of	of	IN
40119	724	8	the	the	DT
40119	724	9	card	card	NN
40119	724	10	.	.	.
40119	725	1	The	the	DT
40119	725	2	ordinates	ordinate	NNS
40119	725	3	of	of	IN
40119	725	4	the	the	DT
40119	725	5	quadrilateral	quadrilateral	JJ
40119	725	6	figure	figure	NN
40119	725	7	E	e	NN
40119	725	8	D	D	NNP
40119	725	9	B	B	NNP
40119	725	10	F	f	NN
40119	725	11	show	show	VB
40119	725	12	the	the	DT
40119	725	13	proportion	proportion	NN
40119	725	14	of	of	IN
40119	725	15	red	red	NN
40119	725	16	,	,	,
40119	725	17	and	and	CC
40119	725	18	those	those	DT
40119	725	19	of	of	IN
40119	725	20	the	the	DT
40119	725	21	triangle	triangle	NN
40119	725	22	E	E	NNP
40119	725	23	F	f	NN
40119	725	24	B	b	NN
40119	725	25	the	the	DT
40119	725	26	proportion	proportion	NN
40119	725	27	of	of	IN
40119	725	28	greenish	greenish	NN
40119	725	29	-	-	HYPH
40119	725	30	blue	blue	JJ
40119	725	31	,	,	,
40119	725	32	at	at	IN
40119	725	33	different	different	JJ
40119	725	34	parts	part	NNS
40119	725	35	of	of	IN
40119	725	36	the	the	DT
40119	725	37	scale	scale	NN
40119	725	38	.	.	.
40119	726	1	Regarding	regard	VBG
40119	726	2	the	the	DT
40119	726	3	portion	portion	NN
40119	726	4	of	of	IN
40119	726	5	the	the	DT
40119	726	6	strip	strip	NN
40119	726	7	which	which	WDT
40119	726	8	lies	lie	VBZ
40119	726	9	above	above	IN
40119	726	10	the	the	DT
40119	726	11	point	point	NN
40119	726	12	marked	mark	VBD
40119	726	13	0	0	CD
40119	726	14	,	,	,
40119	726	15	as	as	IN
40119	726	16	representing	represent	VBG
40119	726	17	the	the	DT
40119	726	18	zero	zero	CD
40119	726	19	of	of	IN
40119	726	20	colour	colour	NN
40119	726	21	--	--	:
40119	726	22	that	that	RB
40119	726	23	is	is	RB
40119	726	24	,	,	,
40119	726	25	whiteness	whiteness	NN
40119	726	26	or	or	CC
40119	726	27	greyness	greyness	NN
40119	726	28	,	,	,
40119	726	29	which	which	WDT
40119	726	30	is	be	VBZ
40119	726	31	essentially	essentially	RB
40119	726	32	the	the	DT
40119	726	33	same	same	JJ
40119	726	34	as	as	IN
40119	726	35	whiteness	whiteness	NN
40119	726	36	--	--	:
40119	726	37	let	let	VB
40119	726	38	us	-PRON-	PRP
40119	726	39	continue	continue	VB
40119	726	40	the	the	DT
40119	726	41	diagram	diagram	NN
40119	726	42	in	in	IN
40119	726	43	the	the	DT
40119	726	44	negative	negative	JJ
40119	726	45	direction	direction	NN
40119	726	46	,	,	,
40119	726	47	gradually	gradually	RB
40119	726	48	reducing	reduce	VBG
40119	726	49	the	the	DT
40119	726	50	quantity	quantity	NN
40119	726	51	of	of	IN
40119	726	52	red	red	NN
40119	726	53	until	until	IN
40119	726	54	it	-PRON-	PRP
40119	726	55	falls	fall	VBZ
40119	726	56	from	from	IN
40119	726	57	50	50	CD
40119	726	58	per	per	NN
40119	726	59	cent	cent	NN
40119	726	60	.	.	.
40119	727	1	of	of	IN
40119	727	2	the	the	DT
40119	727	3	whole	whole	NN
40119	727	4	at	at	IN
40119	727	5	F	F	NNP
40119	727	6	to	to	IN
40119	727	7	nothing	nothing	NN
40119	727	8	at	at	IN
40119	727	9	A	A	NNP
40119	727	10	,	,	,
40119	727	11	and	and	CC
40119	727	12	at	at	IN
40119	727	13	the	the	DT
40119	727	14	same	same	JJ
40119	727	15	time	time	NN
40119	727	16	increasing	increase	VBG
40119	727	17	that	that	DT
40119	727	18	of	of	IN
40119	727	19	the	the	DT
40119	727	20	greenish	greenish	NN
40119	727	21	-	-	HYPH
40119	727	22	blue	blue	JJ
40119	727	23	from	from	IN
40119	727	24	50	50	CD
40119	727	25	per	per	NN
40119	727	26	cent	cent	NN
40119	727	27	.	.	.
40119	728	1	at	at	IN
40119	728	2	F	F	NNP
40119	728	3	to	to	IN
40119	728	4	100	100	CD
40119	728	5	per	per	NN
40119	728	6	cent	cent	NN
40119	728	7	.	.	.
40119	729	1	at	at	IN
40119	729	2	A.	A.	NNP
40119	730	1	The	the	DT
40119	730	2	resultant	resultant	JJ
40119	730	3	hue	hue	NN
40119	730	4	in	in	IN
40119	730	5	the	the	DT
40119	730	6	portion	portion	NN
40119	730	7	of	of	IN
40119	730	8	the	the	DT
40119	730	9	card	card	NN
40119	730	10	between	between	IN
40119	730	11	F	F	NNP
40119	730	12	and	and	CC
40119	730	13	A	a	DT
40119	730	14	will	will	MD
40119	730	15	be	be	VB
40119	730	16	greenish	greenish	NN
40119	730	17	-	-	HYPH
40119	730	18	blue	blue	JJ
40119	730	19	,	,	,
40119	730	20	which	which	WDT
40119	730	21	begins	begin	VBZ
40119	730	22	to	to	TO
40119	730	23	be	be	VB
40119	730	24	perceptible	perceptible	JJ
40119	730	25	as	as	IN
40119	730	26	a	a	DT
40119	730	27	very	very	RB
40119	730	28	pale	pale	JJ
40119	730	29	tint	tint	NN
40119	730	30	just	just	RB
40119	730	31	to	to	IN
40119	730	32	the	the	DT
40119	730	33	left	left	NN
40119	730	34	of	of	IN
40119	730	35	F	F	NNP
40119	730	36	,	,	,
40119	730	37	and	and	CC
40119	730	38	increases	increase	NNS
40119	730	39	in	in	IN
40119	730	40	purity	purity	NN
40119	730	41	as	as	IN
40119	730	42	A	A	NNP
40119	730	43	is	be	VBZ
40119	730	44	approached	approach	VBN
40119	730	45	,	,	,
40119	730	46	at	at	IN
40119	730	47	which	which	WDT
40119	730	48	point	point	NN
40119	730	49	the	the	DT
40119	730	50	colour	colour	NN
40119	730	51	will	will	MD
40119	730	52	be	be	VB
40119	730	53	entirely	entirely	RB
40119	730	54	free	free	JJ
40119	730	55	from	from	IN
40119	730	56	any	any	DT
40119	730	57	admixture	admixture	NN
40119	730	58	with	with	IN
40119	730	59	white	white	NN
40119	730	60	.	.	.
40119	731	1	We	-PRON-	PRP
40119	731	2	have	have	VBP
40119	731	3	in	in	IN
40119	731	4	the	the	DT
40119	731	5	scale	scale	NN
40119	731	6	thus	thus	RB
40119	731	7	presented	present	VBN
40119	731	8	to	to	IN
40119	731	9	our	-PRON-	PRP$
40119	731	10	imagination	imagination	NN
40119	731	11	a	a	DT
40119	731	12	pair	pair	NN
40119	731	13	of	of	IN
40119	731	14	colours	colour	NNS
40119	731	15	,	,	,
40119	731	16	each	each	DT
40119	731	17	occupying	occupy	VBG
40119	731	18	one	one	CD
40119	731	19	-	-	HYPH
40119	731	20	half	half	NN
40119	731	21	of	of	IN
40119	731	22	the	the	DT
40119	731	23	scale	scale	NN
40119	731	24	,	,	,
40119	731	25	and	and	CC
40119	731	26	gradually	gradually	RB
40119	731	27	diminishing	diminish	VBG
40119	731	28	in	in	IN
40119	731	29	purity	purity	NN
40119	731	30	towards	towards	IN
40119	731	31	the	the	DT
40119	731	32	middle	middle	JJ
40119	731	33	line	line	NN
40119	731	34	;	;	:
40119	731	35	here	here	RB
40119	731	36	only	only	RB
40119	731	37	,	,	,
40119	731	38	just	just	RB
40119	731	39	at	at	IN
40119	731	40	the	the	DT
40119	731	41	stage	stage	NN
40119	731	42	where	where	WRB
40119	731	43	one	one	CD
40119	731	44	colour	colour	NN
40119	731	45	merges	merge	NNS
40119	731	46	into	into	IN
40119	731	47	the	the	DT
40119	731	48	other	other	JJ
40119	731	49	,	,	,
40119	731	50	is	be	VBZ
40119	731	51	there	there	EX
40119	731	52	no	no	DT
40119	731	53	colour	colour	NN
40119	731	54	at	at	RB
40119	731	55	all	all	RB
40119	731	56	,	,	,
40119	731	57	and	and	CC
40119	731	58	this	this	DT
40119	731	59	region	region	NN
40119	731	60	represents	represent	VBZ
40119	731	61	the	the	DT
40119	731	62	fixed	fix	VBN
40119	731	63	physical	physical	JJ
40119	731	64	zero	zero	CD
40119	731	65	or	or	CC
40119	731	66	standard	standard	NN
40119	731	67	from	from	IN
40119	731	68	which	which	WDT
40119	731	69	is	be	VBZ
40119	731	70	reckoned	reckon	VBN
40119	731	71	the	the	DT
40119	731	72	purity	purity	NN
40119	731	73	of	of	IN
40119	731	74	a	a	DT
40119	731	75	colour	colour	NN
40119	731	76	corresponding	correspond	VBG
40119	731	77	to	to	IN
40119	731	78	any	any	DT
40119	731	79	other	other	JJ
40119	731	80	portion	portion	NN
40119	731	81	of	of	IN
40119	731	82	the	the	DT
40119	731	83	scale	scale	NN
40119	731	84	.	.	.
40119	732	1	The	the	DT
40119	732	2	completed	complete	VBN
40119	732	3	scale	scale	NN
40119	732	4	,	,	,
40119	732	5	it	-PRON-	PRP
40119	732	6	will	will	MD
40119	732	7	be	be	VB
40119	732	8	observed	observe	VBN
40119	732	9	,	,	,
40119	732	10	though	though	IN
40119	732	11	originally	originally	RB
40119	732	12	intended	intend	VBN
40119	732	13	only	only	RB
40119	732	14	for	for	IN
40119	732	15	the	the	DT
40119	732	16	case	case	NN
40119	732	17	of	of	IN
40119	732	18	red	red	NN
40119	732	19	,	,	,
40119	732	20	turns	turn	VBZ
40119	732	21	out	out	RP
40119	732	22	to	to	TO
40119	732	23	be	be	VB
40119	732	24	equally	equally	RB
40119	732	25	serviceable	serviceable	JJ
40119	732	26	for	for	IN
40119	732	27	greenish	greenish	NN
40119	732	28	-	-	HYPH
40119	732	29	blue	blue	JJ
40119	732	30	:	:	:
40119	732	31	if	if	IN
40119	732	32	we	-PRON-	PRP
40119	732	33	consider	consider	VBP
40119	732	34	greenish	greenish	NN
40119	732	35	-	-	HYPH
40119	732	36	blue	blue	JJ
40119	732	37	as	as	IN
40119	732	38	positive	positive	JJ
40119	732	39	,	,	,
40119	732	40	then	then	RB
40119	732	41	the	the	DT
40119	732	42	red	red	NN
40119	732	43	,	,	,
40119	732	44	being	be	VBG
40119	732	45	on	on	IN
40119	732	46	the	the	DT
40119	732	47	other	other	JJ
40119	732	48	side	side	NN
40119	732	49	of	of	IN
40119	732	50	zero	zero	CD
40119	732	51	,	,	,
40119	732	52	must	must	MD
40119	732	53	be	be	VB
40119	732	54	regarded	regard	VBN
40119	732	55	as	as	IN
40119	732	56	negative	negative	JJ
40119	732	57	.	.	.
40119	733	1	Any	any	DT
40119	733	2	other	other	JJ
40119	733	3	possible	possible	JJ
40119	733	4	pairs	pair	NNS
40119	733	5	of	of	IN
40119	733	6	complementary	complementary	JJ
40119	733	7	colours	colour	NNS
40119	733	8	may	may	MD
40119	733	9	be	be	VB
40119	733	10	similarly	similarly	RB
40119	733	11	treated	treat	VBN
40119	733	12	.	.	.
40119	734	1	This	this	DT
40119	734	2	device	device	NN
40119	734	3	enables	enable	VBZ
40119	734	4	us	-PRON-	PRP
40119	734	5	at	at	IN
40119	734	6	once	once	RB
40119	734	7	to	to	TO
40119	734	8	understand	understand	VB
40119	734	9	the	the	DT
40119	734	10	consequence	consequence	NN
40119	734	11	of	of	IN
40119	734	12	mentally	mentally	RB
40119	734	13	displacing	displace	VBG
40119	734	14	the	the	DT
40119	734	15	zero	zero	CD
40119	734	16	,	,	,
40119	734	17	while	while	IN
40119	734	18	physically	physically	RB
40119	734	19	the	the	DT
40119	734	20	scale	scale	NN
40119	734	21	remains	remain	VBZ
40119	734	22	unchanged	unchanged	JJ
40119	734	23	.	.	.
40119	735	1	When	when	WRB
40119	735	2	red	red	NNP
40119	735	3	is	be	VBZ
40119	735	4	the	the	DT
40119	735	5	prevailing	prevail	VBG
40119	735	6	colour	colour	NN
40119	735	7	in	in	IN
40119	735	8	the	the	DT
40119	735	9	field	field	NN
40119	735	10	of	of	IN
40119	735	11	vision	vision	NN
40119	735	12	,	,	,
40119	735	13	we	-PRON-	PRP
40119	735	14	are	be	VBP
40119	735	15	inclined	inclined	JJ
40119	735	16	to	to	TO
40119	735	17	consider	consider	VB
40119	735	18	it	-PRON-	PRP
40119	735	19	unduly	unduly	RB
40119	735	20	pale	pale	JJ
40119	735	21	;	;	:
40119	735	22	in	in	IN
40119	735	23	other	other	JJ
40119	735	24	words	word	NNS
40119	735	25	we	-PRON-	PRP
40119	735	26	imagine	imagine	VBP
40119	735	27	it	-PRON-	PRP
40119	735	28	to	to	TO
40119	735	29	be	be	VB
40119	735	30	nearer	nearer	IN
40119	735	31	the	the	DT
40119	735	32	zero	zero	CD
40119	735	33	of	of	IN
40119	735	34	the	the	DT
40119	735	35	scale	scale	NN
40119	735	36	than	than	IN
40119	735	37	is	be	VBZ
40119	735	38	actually	actually	RB
40119	735	39	the	the	DT
40119	735	40	case	case	NN
40119	735	41	,	,	,
40119	735	42	and	and	CC
40119	735	43	so	so	RB
40119	735	44	are	be	VBP
40119	735	45	led	lead	VBN
40119	735	46	to	to	TO
40119	735	47	shift	shift	VB
40119	735	48	our	-PRON-	PRP$
40119	735	49	standard	standard	NN
40119	735	50	of	of	IN
40119	735	51	whiteness	whiteness	NN
40119	735	52	from	from	IN
40119	735	53	the	the	DT
40119	735	54	middle	middle	NN
40119	735	55	slightly	slightly	RB
40119	735	56	towards	towards	IN
40119	735	57	the	the	DT
40119	735	58	red	red	JJ
40119	735	59	end	end	NN
40119	735	60	of	of	IN
40119	735	61	the	the	DT
40119	735	62	scale	scale	NN
40119	735	63	.	.	.
40119	736	1	The	the	DT
40119	736	2	new	new	JJ
40119	736	3	position	position	NN
40119	736	4	assigned	assign	VBN
40119	736	5	to	to	IN
40119	736	6	white	white	JJ
40119	736	7	,	,	,
40119	736	8	being	be	VBG
40119	736	9	a	a	DT
40119	736	10	little	little	JJ
40119	736	11	to	to	IN
40119	736	12	the	the	DT
40119	736	13	right	right	NN
40119	736	14	of	of	IN
40119	736	15	the	the	DT
40119	736	16	point	point	NN
40119	736	17	marked	mark	VBD
40119	736	18	0	0	CD
40119	736	19	in	in	IN
40119	736	20	Fig	Fig	NNP
40119	736	21	.	.	.
40119	737	1	35	35	CD
40119	737	2	,	,	,
40119	737	3	is	be	VBZ
40119	737	4	one	one	CD
40119	737	5	where	where	WRB
40119	737	6	,	,	,
40119	737	7	under	under	IN
40119	737	8	customary	customary	JJ
40119	737	9	circumstances	circumstance	NNS
40119	737	10	,	,	,
40119	737	11	the	the	DT
40119	737	12	colour	colour	NN
40119	737	13	would	would	MD
40119	737	14	be	be	VB
40119	737	15	called	call	VBN
40119	737	16	pale	pale	JJ
40119	737	17	red	red	NN
40119	737	18	.	.	.
40119	738	1	At	at	IN
40119	738	2	the	the	DT
40119	738	3	same	same	JJ
40119	738	4	time	time	NN
40119	738	5	,	,	,
40119	738	6	an	an	DT
40119	738	7	object	object	NN
40119	738	8	which	which	WDT
40119	738	9	is	be	VBZ
40119	738	10	normally	normally	RB
40119	738	11	white	white	JJ
40119	738	12	,	,	,
40119	738	13	and	and	CC
40119	738	14	is	be	VBZ
40119	738	15	exactly	exactly	RB
40119	738	16	matched	match	VBN
40119	738	17	at	at	IN
40119	738	18	the	the	DT
40119	738	19	middle	middle	NN
40119	738	20	of	of	IN
40119	738	21	the	the	DT
40119	738	22	scale	scale	NN
40119	738	23	,	,	,
40119	738	24	would	would	MD
40119	738	25	be	be	VB
40119	738	26	a	a	DT
40119	738	27	little	little	JJ
40119	738	28	to	to	IN
40119	738	29	the	the	DT
40119	738	30	left	left	NN
40119	738	31	of	of	IN
40119	738	32	the	the	DT
40119	738	33	imaginary	imaginary	JJ
40119	738	34	zero	zero	CD
40119	738	35	,	,	,
40119	738	36	and	and	CC
40119	738	37	would	would	MD
40119	738	38	consequently	consequently	RB
40119	738	39	appear	appear	VB
40119	738	40	to	to	TO
40119	738	41	be	be	VB
40119	738	42	of	of	IN
40119	738	43	a	a	DT
40119	738	44	greenish	greenish	JJ
40119	738	45	-	-	HYPH
40119	738	46	blue	blue	JJ
40119	738	47	tint	tint	NN
40119	738	48	.	.	.
40119	739	1	This	this	DT
40119	739	2	apparent	apparent	JJ
40119	739	3	transformation	transformation	NN
40119	739	4	of	of	IN
40119	739	5	white	white	JJ
40119	739	6	or	or	CC
40119	739	7	grey	grey	NN
40119	739	8	into	into	IN
40119	739	9	a	a	DT
40119	739	10	decided	decide	VBN
40119	739	11	colour	colour	NN
40119	739	12	is	be	VBZ
40119	739	13	most	most	RBS
40119	739	14	striking	striking	JJ
40119	739	15	when	when	WRB
40119	739	16	the	the	DT
40119	739	17	inducing	induce	VBG
40119	739	18	colour	colour	NN
40119	739	19	is	be	VBZ
40119	739	20	considerably	considerably	RB
40119	739	21	diluted	dilute	VBN
40119	739	22	with	with	IN
40119	739	23	white	white	JJ
40119	739	24	or	or	CC
40119	739	25	is	be	VBZ
40119	739	26	of	of	IN
40119	739	27	feeble	feeble	JJ
40119	739	28	luminosity	luminosity	NN
40119	739	29	.	.	.
40119	740	1	A	a	DT
40119	740	2	small	small	JJ
40119	740	3	fragment	fragment	NN
40119	740	4	of	of	IN
40119	740	5	neutral	neutral	JJ
40119	740	6	grey	grey	NNP
40119	740	7	paper	paper	NNP
40119	740	8	,	,	,
40119	740	9	placed	place	VBN
40119	740	10	upon	upon	IN
40119	740	11	a	a	DT
40119	740	12	much	much	RB
40119	740	13	larger	large	JJR
40119	740	14	piece	piece	NN
40119	740	15	of	of	IN
40119	740	16	a	a	DT
40119	740	17	bright	bright	JJ
40119	740	18	red	red	JJ
40119	740	19	hue	hue	NN
40119	740	20	,	,	,
40119	740	21	generally	generally	RB
40119	740	22	appears	appear	VBZ
40119	740	23	at	at	IN
40119	740	24	the	the	DT
40119	740	25	first	first	JJ
40119	740	26	glance[11	glance[11	NN
40119	740	27	]	]	-RRB-
40119	740	28	to	to	TO
40119	740	29	be	be	VB
40119	740	30	greenish	greenish	NN
40119	740	31	-	-	HYPH
40119	740	32	blue	blue	JJ
40119	740	33	,	,	,
40119	740	34	but	but	CC
40119	740	35	if	if	IN
40119	740	36	the	the	DT
40119	740	37	light	light	NN
40119	740	38	is	be	VBZ
40119	740	39	at	at	RB
40119	740	40	all	all	RB
40119	740	41	strong	strong	JJ
40119	740	42	,	,	,
40119	740	43	only	only	RB
40119	740	44	slightly	slightly	RB
40119	740	45	so	so	RB
40119	740	46	.	.	.
40119	741	1	If	if	IN
40119	741	2	,	,	,
40119	741	3	however	however	RB
40119	741	4	,	,	,
40119	741	5	a	a	DT
40119	741	6	sheet	sheet	NN
40119	741	7	of	of	IN
40119	741	8	white	white	JJ
40119	741	9	tissue	tissue	NN
40119	741	10	paper	paper	NN
40119	741	11	is	be	VBZ
40119	741	12	laid	lay	VBN
40119	741	13	over	over	IN
40119	741	14	the	the	DT
40119	741	15	whole	whole	NN
40119	741	16	,	,	,
40119	741	17	the	the	DT
40119	741	18	greenish	greenish	JJ
40119	741	19	-	-	HYPH
40119	741	20	blue	blue	JJ
40119	741	21	tint	tint	NN
40119	741	22	immediately	immediately	RB
40119	741	23	becomes	become	VBZ
40119	741	24	startlingly	startlingly	RB
40119	741	25	distinct	distinct	JJ
40119	741	26	,	,	,
40119	741	27	and	and	CC
40119	741	28	may	may	MD
40119	741	29	even	even	RB
40119	741	30	appear	appear	VB
40119	741	31	more	more	RBR
40119	741	32	decided	decide	VBN
40119	741	33	than	than	IN
40119	741	34	the	the	DT
40119	741	35	red	red	NN
40119	741	36	itself	-PRON-	PRP
40119	741	37	as	as	IN
40119	741	38	seen	see	VBN
40119	741	39	through	through	IN
40119	741	40	the	the	DT
40119	741	41	tissue	tissue	NN
40119	741	42	.	.	.
40119	742	1	The	the	DT
40119	742	2	same	same	JJ
40119	742	3	piece	piece	NN
40119	742	4	of	of	IN
40119	742	5	grey	grey	NNP
40119	742	6	paper	paper	NNP
40119	742	7	,	,	,
40119	742	8	when	when	WRB
40119	742	9	placed	place	VBN
40119	742	10	upon	upon	IN
40119	742	11	a	a	DT
40119	742	12	green	green	JJ
40119	742	13	ground	ground	NN
40119	742	14	,	,	,
40119	742	15	appears	appear	VBZ
40119	742	16	rose	rise	VBN
40119	742	17	-	-	HYPH
40119	742	18	coloured	colour	VBN
40119	742	19	,	,	,
40119	742	20	and	and	CC
40119	742	21	upon	upon	IN
40119	742	22	a	a	DT
40119	742	23	blue	blue	JJ
40119	742	24	ground	ground	NN
40119	742	25	,	,	,
40119	742	26	yellow	yellow	NNP
40119	742	27	,	,	,
40119	742	28	the	the	DT
40119	742	29	effect	effect	NN
40119	742	30	being	be	VBG
40119	742	31	always	always	RB
40119	742	32	greatly	greatly	RB
40119	742	33	increased	increase	VBN
40119	742	34	by	by	IN
40119	742	35	the	the	DT
40119	742	36	diluent	diluent	JJ
40119	742	37	action	action	NN
40119	742	38	of	of	IN
40119	742	39	superposed	superpose	VBN
40119	742	40	tissue	tissue	NN
40119	742	41	paper	paper	NN
40119	742	42	.	.	.
40119	743	1	There	there	EX
40119	743	2	seem	seem	VBP
40119	743	3	to	to	TO
40119	743	4	be	be	VB
40119	743	5	several	several	JJ
40119	743	6	reasons	reason	NNS
40119	743	7	,	,	,
40119	743	8	partly	partly	RB
40119	743	9	physical	physical	JJ
40119	743	10	and	and	CC
40119	743	11	partly	partly	RB
40119	743	12	psychological	psychological	JJ
40119	743	13	,	,	,
40119	743	14	why	why	WRB
40119	743	15	these	these	DT
40119	743	16	contrast	contrast	NN
40119	743	17	colours	colour	NNS
40119	743	18	,	,	,
40119	743	19	as	as	IN
40119	743	20	they	-PRON-	PRP
40119	743	21	are	be	VBP
40119	743	22	called	call	VBN
40119	743	23	,	,	,
40119	743	24	are	be	VBP
40119	743	25	more	more	RBR
40119	743	26	pronounced	pronounced	JJ
40119	743	27	when	when	WRB
40119	743	28	the	the	DT
40119	743	29	colour	colour	NN
40119	743	30	that	that	WDT
40119	743	31	calls	call	VBZ
40119	743	32	them	-PRON-	PRP
40119	743	33	into	into	IN
40119	743	34	existence	existence	NN
40119	743	35	either	either	CC
40119	743	36	has	have	VBZ
40119	743	37	a	a	DT
40119	743	38	somewhat	somewhat	RB
40119	743	39	pale	pale	JJ
40119	743	40	tint	tint	NN
40119	743	41	or	or	CC
40119	743	42	is	be	VBZ
40119	743	43	feebly	feebly	RB
40119	743	44	illuminated	illuminate	VBN
40119	743	45	.	.	.
40119	744	1	Probably	probably	RB
40119	744	2	the	the	DT
40119	744	3	most	most	RBS
40119	744	4	important	important	JJ
40119	744	5	is	be	VBZ
40119	744	6	of	of	IN
40119	744	7	a	a	DT
40119	744	8	purely	purely	RB
40119	744	9	physical	physical	JJ
40119	744	10	character	character	NN
40119	744	11	.	.	.
40119	745	1	The	the	DT
40119	745	2	refracting	refracting	NN
40119	745	3	media	medium	NNS
40119	745	4	of	of	IN
40119	745	5	the	the	DT
40119	745	6	eye	eye	NN
40119	745	7	are	be	VBP
40119	745	8	much	much	RB
40119	745	9	less	less	RBR
40119	745	10	perfectly	perfectly	RB
40119	745	11	transparent	transparent	JJ
40119	745	12	than	than	IN
40119	745	13	a	a	DT
40119	745	14	good	good	JJ
40119	745	15	glass	glass	NN
40119	745	16	lens	lens	NN
40119	745	17	is	be	VBZ
40119	745	18	;	;	:
40119	745	19	they	-PRON-	PRP
40119	745	20	are	be	VBP
40119	745	21	sensibly	sensibly	RB
40119	745	22	turbid	turbid	JJ
40119	745	23	or	or	CC
40119	745	24	opalescent	opalescent	JJ
40119	745	25	,	,	,
40119	745	26	and	and	CC
40119	745	27	in	in	IN
40119	745	28	consequence	consequence	NN
40119	745	29	of	of	IN
40119	745	30	this	this	DT
40119	745	31	defect	defect	VB
40119	745	32	some	some	DT
40119	745	33	of	of	IN
40119	745	34	the	the	DT
40119	745	35	light	light	NN
40119	745	36	which	which	WDT
40119	745	37	falls	fall	VBZ
40119	745	38	upon	upon	IN
40119	745	39	them	-PRON-	PRP
40119	745	40	is	be	VBZ
40119	745	41	irregularly	irregularly	RB
40119	745	42	scattered	scatter	VBN
40119	745	43	over	over	IN
40119	745	44	the	the	DT
40119	745	45	retina	retina	NNP
40119	745	46	.	.	.
40119	746	1	If	if	IN
40119	746	2	we	-PRON-	PRP
40119	746	3	look	look	VBP
40119	746	4	at	at	IN
40119	746	5	a	a	DT
40119	746	6	bright	bright	JJ
40119	746	7	red	red	JJ
40119	746	8	object	object	NN
40119	746	9	with	with	IN
40119	746	10	a	a	DT
40119	746	11	small	small	JJ
40119	746	12	white	white	JJ
40119	746	13	patch	patch	NN
40119	746	14	upon	upon	IN
40119	746	15	it	-PRON-	PRP
40119	746	16	,	,	,
40119	746	17	the	the	DT
40119	746	18	image	image	NN
40119	746	19	of	of	IN
40119	746	20	the	the	DT
40119	746	21	patch	patch	NN
40119	746	22	as	as	IN
40119	746	23	formed	form	VBN
40119	746	24	upon	upon	IN
40119	746	25	the	the	DT
40119	746	26	retina	retina	NNP
40119	746	27	is	be	VBZ
40119	746	28	not	not	RB
40119	746	29	,	,	,
40119	746	30	physically	physically	RB
40119	746	31	speaking	speak	VBG
40119	746	32	,	,	,
40119	746	33	perfectly	perfectly	RB
40119	746	34	white	white	JJ
40119	746	35	,	,	,
40119	746	36	but	but	CC
40119	746	37	slightly	slightly	RB
40119	746	38	coloured	colour	VBN
40119	746	39	by	by	IN
40119	746	40	diffused	diffuse	VBN
40119	746	41	red	red	JJ
40119	746	42	light	light	NN
40119	746	43	;	;	:
40119	746	44	owing	owe	VBG
40119	746	45	however	however	RB
40119	746	46	to	to	IN
40119	746	47	the	the	DT
40119	746	48	psychological	psychological	JJ
40119	746	49	influence	influence	NN
40119	746	50	to	to	TO
40119	746	51	which	which	WDT
40119	746	52	our	-PRON-	PRP$
40119	746	53	attention	attention	NN
40119	746	54	has	have	VBZ
40119	746	55	been	be	VBN
40119	746	56	directed	direct	VBN
40119	746	57	,	,	,
40119	746	58	the	the	DT
40119	746	59	faint	faint	JJ
40119	746	60	red	red	JJ
40119	746	61	coloration	coloration	NN
40119	746	62	is	be	VBZ
40119	746	63	not	not	RB
40119	746	64	consciously	consciously	RB
40119	746	65	perceived	perceive	VBN
40119	746	66	;	;	:
40119	746	67	the	the	DT
40119	746	68	same	same	JJ
40119	746	69	mental	mental	JJ
40119	746	70	displacement	displacement	NN
40119	746	71	of	of	IN
40119	746	72	the	the	DT
40119	746	73	zero	zero	CD
40119	746	74	which	which	WDT
40119	746	75	,	,	,
40119	746	76	when	when	WRB
40119	746	77	the	the	DT
40119	746	78	exciting	exciting	JJ
40119	746	79	colour	colour	NN
40119	746	80	was	be	VBD
40119	746	81	feeble	feeble	JJ
40119	746	82	,	,	,
40119	746	83	led	lead	VBD
40119	746	84	us	-PRON-	PRP
40119	746	85	to	to	TO
40119	746	86	regard	regard	VB
40119	746	87	white	white	JJ
40119	746	88	(	(	-LRB-
40119	746	89	or	or	CC
40119	746	90	grey	grey	NNP
40119	746	91	)	)	-RRB-
40119	746	92	as	as	IN
40119	746	93	bluish	bluish	NNP
40119	746	94	-	-	HYPH
40119	746	95	green	green	JJ
40119	746	96	,	,	,
40119	746	97	now	now	RB
40119	746	98	causes	cause	VBZ
40119	746	99	what	what	WP
40119	746	100	is	be	VBZ
40119	746	101	actually	actually	RB
40119	746	102	pale	pale	JJ
40119	746	103	red	red	JJ
40119	746	104	to	to	TO
40119	746	105	appear	appear	VB
40119	746	106	white	white	JJ
40119	746	107	.	.	.
40119	747	1	There	there	EX
40119	747	2	is	be	VBZ
40119	747	3	no	no	DT
40119	747	4	need	need	NN
40119	747	5	whatever	whatever	WDT
40119	747	6	to	to	TO
40119	747	7	assume	assume	VB
40119	747	8	that	that	IN
40119	747	9	the	the	DT
40119	747	10	contrast	contrast	NN
40119	747	11	colours	colour	VBZ
40119	747	12	with	with	IN
40119	747	13	which	which	WDT
40119	747	14	we	-PRON-	PRP
40119	747	15	have	have	VBP
40119	747	16	been	be	VBN
40119	747	17	dealing	deal	VBG
40119	747	18	are	be	VBP
40119	747	19	of	of	IN
40119	747	20	physiological	physiological	JJ
40119	747	21	origin	origin	NN
40119	747	22	and	and	CC
40119	747	23	due	due	IN
40119	747	24	to	to	IN
40119	747	25	an	an	DT
40119	747	26	inductive	inductive	JJ
40119	747	27	action	action	NN
40119	747	28	excited	excite	VBN
40119	747	29	in	in	IN
40119	747	30	portions	portion	NNS
40119	747	31	of	of	IN
40119	747	32	the	the	DT
40119	747	33	retina	retina	NNP
40119	747	34	adjacent	adjacent	JJ
40119	747	35	to	to	IN
40119	747	36	those	those	DT
40119	747	37	upon	upon	IN
40119	747	38	which	which	WDT
40119	747	39	coloured	colour	VBD
40119	747	40	light	light	NN
40119	747	41	falls	fall	VBZ
40119	747	42	.	.	.
40119	748	1	On	on	IN
40119	748	2	the	the	DT
40119	748	3	contrary	contrary	NN
40119	748	4	,	,	,
40119	748	5	it	-PRON-	PRP
40119	748	6	would	would	MD
40119	748	7	be	be	VB
40119	748	8	a	a	DT
40119	748	9	matter	matter	NN
40119	748	10	for	for	IN
40119	748	11	surprise	surprise	NN
40119	748	12	if	if	IN
40119	748	13	the	the	DT
40119	748	14	case	case	NN
40119	748	15	in	in	IN
40119	748	16	question	question	NN
40119	748	17	presented	present	VBD
40119	748	18	an	an	DT
40119	748	19	exception	exception	NN
40119	748	20	to	to	IN
40119	748	21	the	the	DT
40119	748	22	comprehensive	comprehensive	JJ
40119	748	23	law	law	NN
40119	748	24	which	which	WDT
40119	748	25	governs	govern	VBZ
40119	748	26	the	the	DT
40119	748	27	fluctuation	fluctuation	NN
40119	748	28	of	of	IN
40119	748	29	the	the	DT
40119	748	30	mental	mental	JJ
40119	748	31	judgment	judgment	NN
40119	748	32	.	.	.
40119	749	1	Of	of	IN
40119	749	2	the	the	DT
40119	749	3	operation	operation	NN
40119	749	4	of	of	IN
40119	749	5	this	this	DT
40119	749	6	law	law	NN
40119	749	7	I	-PRON-	PRP
40119	749	8	have	have	VBP
40119	749	9	quoted	quote	VBN
40119	749	10	several	several	JJ
40119	749	11	very	very	RB
40119	749	12	diverse	diverse	JJ
40119	749	13	instances	instance	NNS
40119	749	14	,	,	,
40119	749	15	and	and	CC
40119	749	16	the	the	DT
40119	749	17	number	number	NN
40119	749	18	might	may	MD
40119	749	19	easily	easily	RB
40119	749	20	have	have	VB
40119	749	21	been	be	VBN
40119	749	22	increased	increase	VBN
40119	749	23	.	.	.
40119	750	1	Nor	nor	CC
40119	750	2	is	be	VBZ
40119	750	3	it	-PRON-	PRP
40119	750	4	only	only	RB
40119	750	5	in	in	IN
40119	750	6	relation	relation	NN
40119	750	7	to	to	IN
40119	750	8	optical	optical	JJ
40119	750	9	phenomena	phenomenon	NNS
40119	750	10	that	that	WDT
40119	750	11	the	the	DT
40119	750	12	law	law	NN
40119	750	13	holds	hold	VBZ
40119	750	14	good	good	JJ
40119	750	15	;	;	:
40119	750	16	in	in	IN
40119	750	17	its	-PRON-	PRP$
40119	750	18	most	most	RBS
40119	750	19	general	general	JJ
40119	750	20	form	form	NN
40119	750	21	,	,	,
40119	750	22	supplemented	supplement	VBD
40119	750	23	it	-PRON-	PRP
40119	750	24	may	may	MD
40119	750	25	be	be	VB
40119	750	26	in	in	IN
40119	750	27	some	some	DT
40119	750	28	instances	instance	NNS
40119	750	29	by	by	IN
40119	750	30	obvious	obvious	JJ
40119	750	31	corollaries	corollary	NNS
40119	750	32	,	,	,
40119	750	33	it	-PRON-	PRP
40119	750	34	is	be	VBZ
40119	750	35	applicable	applicable	JJ
40119	750	36	to	to	IN
40119	750	37	almost	almost	RB
40119	750	38	every	every	DT
40119	750	39	case	case	NN
40119	750	40	in	in	IN
40119	750	41	which	which	WDT
40119	750	42	physical	physical	JJ
40119	750	43	attributes	attribute	NNS
40119	750	44	of	of	IN
40119	750	45	whatever	whatever	WDT
40119	750	46	kind	kind	NN
40119	750	47	are	be	VBP
40119	750	48	the	the	DT
40119	750	49	subject	subject	NN
40119	750	50	of	of	IN
40119	750	51	unassisted	unassisted	JJ
40119	750	52	mental	mental	JJ
40119	750	53	judgment	judgment	NN
40119	750	54	.	.	.
40119	751	1	CHAPTER	CHAPTER	NNP
40119	751	2	V.	V.	NNP
40119	751	3	CURIOSITIES	CURIOSITIES	NNP
40119	751	4	OF	of	IN
40119	751	5	VISION	VISION	NNP
40119	751	6	.	.	.
40119	752	1	The	the	DT
40119	752	2	function	function	NN
40119	752	3	of	of	IN
40119	752	4	the	the	DT
40119	752	5	eye	eye	NN
40119	752	6	,	,	,
40119	752	7	regarded	regard	VBD
40119	752	8	as	as	IN
40119	752	9	an	an	DT
40119	752	10	optical	optical	JJ
40119	752	11	instrument	instrument	NN
40119	752	12	,	,	,
40119	752	13	is	be	VBZ
40119	752	14	limited	limit	VBN
40119	752	15	to	to	IN
40119	752	16	the	the	DT
40119	752	17	formation	formation	NN
40119	752	18	of	of	IN
40119	752	19	luminous	luminous	JJ
40119	752	20	images	image	NNS
40119	752	21	upon	upon	IN
40119	752	22	the	the	DT
40119	752	23	retina	retina	NNP
40119	752	24	.	.	.
40119	753	1	From	from	IN
40119	753	2	a	a	DT
40119	753	3	purely	purely	RB
40119	753	4	physical	physical	JJ
40119	753	5	point	point	NN
40119	753	6	of	of	IN
40119	753	7	view	view	NN
40119	753	8	it	-PRON-	PRP
40119	753	9	is	be	VBZ
40119	753	10	a	a	DT
40119	753	11	simple	simple	JJ
40119	753	12	enough	enough	JJ
40119	753	13	piece	piece	NN
40119	753	14	of	of	IN
40119	753	15	apparatus	apparatus	NN
40119	753	16	,	,	,
40119	753	17	and	and	CC
40119	753	18	,	,	,
40119	753	19	as	as	IN
40119	753	20	was	be	VBD
40119	753	21	forcibly	forcibly	RB
40119	753	22	pointed	point	VBN
40119	753	23	out	out	RP
40119	753	24	by	by	IN
40119	753	25	Helmholtz	Helmholtz	NNP
40119	753	26	,	,	,
40119	753	27	it	-PRON-	PRP
40119	753	28	is	be	VBZ
40119	753	29	subject	subject	JJ
40119	753	30	to	to	IN
40119	753	31	a	a	DT
40119	753	32	number	number	NN
40119	753	33	of	of	IN
40119	753	34	defects	defect	NNS
40119	753	35	which	which	WDT
40119	753	36	can	can	MD
40119	753	37	be	be	VB
40119	753	38	demonstrated	demonstrate	VBN
40119	753	39	by	by	IN
40119	753	40	the	the	DT
40119	753	41	simplest	simple	JJS
40119	753	42	tests	test	NNS
40119	753	43	,	,	,
40119	753	44	and	and	CC
40119	753	45	which	which	WDT
40119	753	46	,	,	,
40119	753	47	if	if	IN
40119	753	48	they	-PRON-	PRP
40119	753	49	occurred	occur	VBD
40119	753	50	in	in	IN
40119	753	51	a	a	DT
40119	753	52	shop	shop	NN
40119	753	53	-	-	HYPH
40119	753	54	bought	buy	VBN
40119	753	55	instrument	instrument	NN
40119	753	56	,	,	,
40119	753	57	would	would	MD
40119	753	58	be	be	VB
40119	753	59	considered	consider	VBN
40119	753	60	intolerable	intolerable	JJ
40119	753	61	.	.	.
40119	754	1	What	what	WP
40119	754	2	takes	take	VBZ
40119	754	3	place	place	NN
40119	754	4	in	in	IN
40119	754	5	the	the	DT
40119	754	6	retina	retina	NNP
40119	754	7	itself	-PRON-	PRP
40119	754	8	under	under	IN
40119	754	9	luminous	luminous	JJ
40119	754	10	excitation	excitation	NN
40119	754	11	,	,	,
40119	754	12	and	and	CC
40119	754	13	how	how	WRB
40119	754	14	the	the	DT
40119	754	15	sensation	sensation	NN
40119	754	16	of	of	IN
40119	754	17	sight	sight	NN
40119	754	18	is	be	VBZ
40119	754	19	produced	produce	VBN
40119	754	20	,	,	,
40119	754	21	are	be	VBP
40119	754	22	questions	question	NNS
40119	754	23	which	which	WDT
40119	754	24	belong	belong	VBP
40119	754	25	to	to	IN
40119	754	26	the	the	DT
40119	754	27	sciences	science	NNS
40119	754	28	of	of	IN
40119	754	29	physiology	physiology	NN
40119	754	30	and	and	CC
40119	754	31	psychology	psychology	NN
40119	754	32	;	;	:
40119	754	33	and	and	CC
40119	754	34	in	in	IN
40119	754	35	the	the	DT
40119	754	36	physiological	physiological	JJ
40119	754	37	and	and	CC
40119	754	38	psychological	psychological	JJ
40119	754	39	departments	department	NNS
40119	754	40	of	of	IN
40119	754	41	the	the	DT
40119	754	42	visual	visual	JJ
40119	754	43	machinery	machinery	NN
40119	754	44	we	-PRON-	PRP
40119	754	45	meet	meet	VBP
40119	754	46	with	with	IN
40119	754	47	an	an	DT
40119	754	48	additional	additional	JJ
40119	754	49	host	host	NN
40119	754	50	of	of	IN
40119	754	51	objectionable	objectionable	JJ
40119	754	52	peculiarities	peculiarity	NNS
40119	754	53	from	from	IN
40119	754	54	which	which	WDT
40119	754	55	any	any	DT
40119	754	56	humanly	humanly	RB
40119	754	57	-	-	HYPH
40119	754	58	constructed	construct	VBN
40119	754	59	apparatus	apparatus	NN
40119	754	60	is	be	VBZ
40119	754	61	by	by	IN
40119	754	62	the	the	DT
40119	754	63	nature	nature	NN
40119	754	64	of	of	IN
40119	754	65	the	the	DT
40119	754	66	case	case	NN
40119	754	67	free	free	JJ
40119	754	68	.	.	.
40119	755	1	Yet	yet	CC
40119	755	2	in	in	IN
40119	755	3	spite	spite	NN
40119	755	4	of	of	IN
40119	755	5	all	all	PDT
40119	755	6	these	these	DT
40119	755	7	drawbacks	drawback	NNS
40119	755	8	our	-PRON-	PRP$
40119	755	9	eyes	eye	NNS
40119	755	10	do	do	VBP
40119	755	11	us	-PRON-	PRP
40119	755	12	excellent	excellent	JJ
40119	755	13	service	service	NN
40119	755	14	,	,	,
40119	755	15	and	and	CC
40119	755	16	provided	provide	VBD
40119	755	17	that	that	IN
40119	755	18	they	-PRON-	PRP
40119	755	19	are	be	VBP
40119	755	20	free	free	JJ
40119	755	21	from	from	IN
40119	755	22	actual	actual	JJ
40119	755	23	malformation	malformation	NN
40119	755	24	and	and	CC
40119	755	25	have	have	VBP
40119	755	26	not	not	RB
40119	755	27	suffered	suffer	VBN
40119	755	28	from	from	IN
40119	755	29	injury	injury	NN
40119	755	30	or	or	CC
40119	755	31	disease	disease	NN
40119	755	32	,	,	,
40119	755	33	we	-PRON-	PRP
40119	755	34	do	do	VBP
40119	755	35	not	not	RB
40119	755	36	often	often	RB
40119	755	37	find	find	VB
40119	755	38	fault	fault	NN
40119	755	39	with	with	IN
40119	755	40	them	-PRON-	PRP
40119	755	41	.	.	.
40119	756	1	This	this	DT
40119	756	2	,	,	,
40119	756	3	however	however	RB
40119	756	4	,	,	,
40119	756	5	is	be	VBZ
40119	756	6	not	not	RB
40119	756	7	because	because	IN
40119	756	8	they	-PRON-	PRP
40119	756	9	are	be	VBP
40119	756	10	as	as	RB
40119	756	11	good	good	JJ
40119	756	12	as	as	IN
40119	756	13	they	-PRON-	PRP
40119	756	14	might	may	MD
40119	756	15	be	be	VB
40119	756	16	,	,	,
40119	756	17	but	but	CC
40119	756	18	because	because	IN
40119	756	19	with	with	IN
40119	756	20	incessant	incessant	JJ
40119	756	21	practice	practice	NN
40119	756	22	we	-PRON-	PRP
40119	756	23	have	have	VBP
40119	756	24	acquired	acquire	VBN
40119	756	25	a	a	DT
40119	756	26	very	very	RB
40119	756	27	high	high	JJ
40119	756	28	degree	degree	NN
40119	756	29	of	of	IN
40119	756	30	skill	skill	NN
40119	756	31	in	in	IN
40119	756	32	their	-PRON-	PRP$
40119	756	33	use	use	NN
40119	756	34	.	.	.
40119	757	1	If	if	IN
40119	757	2	anything	anything	NN
40119	757	3	is	be	VBZ
40119	757	4	more	more	RBR
40119	757	5	remarkable	remarkable	JJ
40119	757	6	than	than	IN
40119	757	7	the	the	DT
40119	757	8	ease	ease	NN
40119	757	9	and	and	CC
40119	757	10	certainty	certainty	NN
40119	757	11	with	with	IN
40119	757	12	which	which	WDT
40119	757	13	we	-PRON-	PRP
40119	757	14	have	have	VBP
40119	757	15	learnt	learn	VBN
40119	757	16	to	to	TO
40119	757	17	interpret	interpret	VB
40119	757	18	ocular	ocular	JJ
40119	757	19	indications	indication	NNS
40119	757	20	,	,	,
40119	757	21	when	when	WRB
40119	757	22	they	-PRON-	PRP
40119	757	23	are	be	VBP
40119	757	24	in	in	IN
40119	757	25	some	some	DT
40119	757	26	sort	sort	NN
40119	757	27	of	of	IN
40119	757	28	conformity	conformity	NN
40119	757	29	with	with	IN
40119	757	30	external	external	JJ
40119	757	31	objects	object	NNS
40119	757	32	,	,	,
40119	757	33	it	-PRON-	PRP
40119	757	34	is	be	VBZ
40119	757	35	the	the	DT
40119	757	36	pertinacity	pertinacity	NN
40119	757	37	with	with	IN
40119	757	38	which	which	WDT
40119	757	39	we	-PRON-	PRP
40119	757	40	refuse	refuse	VBP
40119	757	41	to	to	TO
40119	757	42	be	be	VB
40119	757	43	misled	mislead	VBN
40119	757	44	when	when	WRB
40119	757	45	our	-PRON-	PRP$
40119	757	46	eyes	eye	NNS
40119	757	47	are	be	VBP
40119	757	48	doing	do	VBG
40119	757	49	their	-PRON-	PRP$
40119	757	50	best	good	JJS
40119	757	51	to	to	TO
40119	757	52	deceive	deceive	VB
40119	757	53	us	-PRON-	PRP
40119	757	54	.	.	.
40119	758	1	In	in	IN
40119	758	2	our	-PRON-	PRP$
40119	758	3	earliest	early	JJS
40119	758	4	years	year	NNS
40119	758	5	we	-PRON-	PRP
40119	758	6	began	begin	VBD
40119	758	7	to	to	TO
40119	758	8	find	find	VB
40119	758	9	out	out	RP
40119	758	10	that	that	IN
40119	758	11	we	-PRON-	PRP
40119	758	12	must	must	MD
40119	758	13	not	not	RB
40119	758	14	believe	believe	VB
40119	758	15	all	all	DT
40119	758	16	we	-PRON-	PRP
40119	758	17	saw	see	VBD
40119	758	18	;	;	:
40119	758	19	experience	experience	NN
40119	758	20	gradually	gradually	RB
40119	758	21	taught	teach	VBD
40119	758	22	us	-PRON-	PRP
40119	758	23	that	that	DT
40119	758	24	on	on	IN
40119	758	25	certain	certain	JJ
40119	758	26	points	point	NNS
40119	758	27	and	and	CC
40119	758	28	under	under	IN
40119	758	29	certain	certain	JJ
40119	758	30	circumstances	circumstance	NNS
40119	758	31	the	the	DT
40119	758	32	indications	indication	NNS
40119	758	33	of	of	IN
40119	758	34	our	-PRON-	PRP$
40119	758	35	organs	organ	NNS
40119	758	36	of	of	IN
40119	758	37	vision	vision	NN
40119	758	38	were	be	VBD
40119	758	39	uniformly	uniformly	RB
40119	758	40	meaningless	meaningless	JJ
40119	758	41	or	or	CC
40119	758	42	fallacious	fallacious	JJ
40119	758	43	,	,	,
40119	758	44	and	and	CC
40119	758	45	we	-PRON-	PRP
40119	758	46	soon	soon	RB
40119	758	47	discovered	discover	VBD
40119	758	48	that	that	IN
40119	758	49	it	-PRON-	PRP
40119	758	50	would	would	MD
40119	758	51	save	save	VB
40119	758	52	us	-PRON-	PRP
40119	758	53	trouble	trouble	NN
40119	758	54	and	and	CC
40119	758	55	add	add	VB
40119	758	56	to	to	IN
40119	758	57	the	the	DT
40119	758	58	comfort	comfort	NN
40119	758	59	of	of	IN
40119	758	60	life	life	NN
40119	758	61	if	if	IN
40119	758	62	we	-PRON-	PRP
40119	758	63	cultivated	cultivate	VBD
40119	758	64	a	a	DT
40119	758	65	habit	habit	NN
40119	758	66	of	of	IN
40119	758	67	completely	completely	RB
40119	758	68	ignoring	ignore	VBG
40119	758	69	all	all	DT
40119	758	70	such	such	JJ
40119	758	71	visual	visual	JJ
40119	758	72	sensations	sensation	NNS
40119	758	73	as	as	IN
40119	758	74	were	be	VBD
40119	758	75	of	of	IN
40119	758	76	no	no	DT
40119	758	77	practical	practical	JJ
40119	758	78	value	value	NN
40119	758	79	.	.	.
40119	759	1	In	in	IN
40119	759	2	this	this	DT
40119	759	3	most	most	JJS
40119	759	4	of	of	IN
40119	759	5	us	-PRON-	PRP
40119	759	6	have	have	VBP
40119	759	7	been	be	VBN
40119	759	8	remarkably	remarkably	RB
40119	759	9	successful	successful	JJ
40119	759	10	;	;	:
40119	759	11	so	so	RB
40119	759	12	much	much	RB
40119	759	13	so	so	RB
40119	759	14	,	,	,
40119	759	15	that	that	IN
40119	759	16	if	if	IN
40119	759	17	,	,	,
40119	759	18	from	from	IN
40119	759	19	motives	motive	NNS
40119	759	20	of	of	IN
40119	759	21	curiosity	curiosity	NN
40119	759	22	,	,	,
40119	759	23	or	or	CC
40119	759	24	for	for	IN
40119	759	25	the	the	DT
40119	759	26	sake	sake	NN
40119	759	27	of	of	IN
40119	759	28	scientific	scientific	JJ
40119	759	29	experiment	experiment	NN
40119	759	30	,	,	,
40119	759	31	we	-PRON-	PRP
40119	759	32	wish	wish	VBP
40119	759	33	to	to	TO
40119	759	34	direct	direct	VB
40119	759	35	our	-PRON-	PRP$
40119	759	36	attention	attention	NN
40119	759	37	to	to	IN
40119	759	38	the	the	DT
40119	759	39	sensations	sensation	NNS
40119	759	40	in	in	IN
40119	759	41	question	question	NN
40119	759	42	,	,	,
40119	759	43	and	and	CC
40119	759	44	to	to	TO
40119	759	45	see	see	VB
40119	759	46	things	thing	NNS
40119	759	47	as	as	IN
40119	759	48	they	-PRON-	PRP
40119	759	49	actually	actually	RB
40119	759	50	appear	appear	VBP
40119	759	51	,	,	,
40119	759	52	we	-PRON-	PRP
40119	759	53	can	can	MD
40119	759	54	only	only	RB
40119	759	55	do	do	VB
40119	759	56	so	so	RB
40119	759	57	with	with	IN
40119	759	58	the	the	DT
40119	759	59	greatest	great	JJS
40119	759	60	difficulty	difficulty	NN
40119	759	61	;	;	:
40119	759	62	sometimes	sometimes	RB
40119	759	63	,	,	,
40119	759	64	indeed	indeed	RB
40119	759	65	,	,	,
40119	759	66	not	not	RB
40119	759	67	at	at	RB
40119	759	68	all	all	RB
40119	759	69	,	,	,
40119	759	70	unless	unless	IN
40119	759	71	with	with	IN
40119	759	72	the	the	DT
40119	759	73	assistance	assistance	NN
40119	759	74	of	of	IN
40119	759	75	some	some	DT
40119	759	76	specially	specially	RB
40119	759	77	contrived	contrive	VBN
40119	759	78	artifice	artifice	NN
40119	759	79	.	.	.
40119	760	1	In	in	IN
40119	760	2	the	the	DT
40119	760	3	present	present	JJ
40119	760	4	chapter	chapter	NN
40119	760	5	it	-PRON-	PRP
40119	760	6	is	be	VBZ
40119	760	7	proposed	propose	VBN
40119	760	8	to	to	TO
40119	760	9	discuss	discuss	VB
40119	760	10	a	a	DT
40119	760	11	few	few	JJ
40119	760	12	of	of	IN
40119	760	13	the	the	DT
40119	760	14	less	less	RBR
40119	760	15	familiar	familiar	JJ
40119	760	16	vagaries	vagary	NNS
40119	760	17	of	of	IN
40119	760	18	the	the	DT
40119	760	19	visual	visual	JJ
40119	760	20	organs	organ	NNS
40119	760	21	,	,	,
40119	760	22	and	and	CC
40119	760	23	to	to	TO
40119	760	24	show	show	VB
40119	760	25	how	how	WRB
40119	760	26	they	-PRON-	PRP
40119	760	27	may	may	MD
40119	760	28	be	be	VB
40119	760	29	demonstrated	demonstrate	VBN
40119	760	30	.	.	.
40119	761	1	Some	some	DT
40119	761	2	of	of	IN
40119	761	3	the	the	DT
40119	761	4	experiments	experiment	NNS
40119	761	5	may	may	MD
40119	761	6	,	,	,
40119	761	7	it	-PRON-	PRP
40119	761	8	is	be	VBZ
40119	761	9	to	to	TO
40119	761	10	be	be	VB
40119	761	11	feared	fear	VBN
40119	761	12	,	,	,
40119	761	13	be	be	VB
40119	761	14	found	find	VBN
40119	761	15	rather	rather	RB
40119	761	16	difficult	difficult	JJ
40119	761	17	;	;	:
40119	761	18	success	success	NN
40119	761	19	will	will	MD
40119	761	20	depend	depend	VB
40119	761	21	mainly	mainly	RB
40119	761	22	upon	upon	IN
40119	761	23	the	the	DT
40119	761	24	experimentalist	experimentalist	NN
40119	761	25	's	's	POS
40119	761	26	ability	ability	NN
40119	761	27	to	to	TO
40119	761	28	lay	lay	VB
40119	761	29	aside	aside	RB
40119	761	30	habit	habit	NNP
40119	761	31	and	and	CC
40119	761	32	prejudice	prejudice	NN
40119	761	33	,	,	,
40119	761	34	and	and	CC
40119	761	35	give	give	VB
40119	761	36	close	close	JJ
40119	761	37	attention	attention	NN
40119	761	38	to	to	IN
40119	761	39	his	-PRON-	PRP$
40119	761	40	visual	visual	JJ
40119	761	41	sensations	sensation	NNS
40119	761	42	;	;	:
40119	761	43	but	but	CC
40119	761	44	it	-PRON-	PRP
40119	761	45	is	be	VBZ
40119	761	46	hardly	hardly	RB
40119	761	47	to	to	TO
40119	761	48	be	be	VB
40119	761	49	expected	expect	VBN
40119	761	50	that	that	IN
40119	761	51	an	an	DT
40119	761	52	unskilled	unskilled	JJ
40119	761	53	person	person	NN
40119	761	54	will	will	MD
40119	761	55	at	at	IN
40119	761	56	the	the	DT
40119	761	57	first	first	JJ
40119	761	58	attempt	attempt	NN
40119	761	59	observe	observe	VBP
40119	761	60	all	all	PDT
40119	761	61	the	the	DT
40119	761	62	phenomena	phenomenon	NNS
40119	761	63	which	which	WDT
40119	761	64	will	will	MD
40119	761	65	be	be	VB
40119	761	66	referred	refer	VBN
40119	761	67	to	to	IN
40119	761	68	.	.	.
40119	762	1	Among	among	IN
40119	762	2	the	the	DT
40119	762	3	most	most	RBS
40119	762	4	annoying	annoying	JJ
40119	762	5	of	of	IN
40119	762	6	the	the	DT
40119	762	7	eccentricities	eccentricity	NNS
40119	762	8	which	which	WDT
40119	762	9	characterise	characterise	VBP
40119	762	10	the	the	DT
40119	762	11	sense	sense	NN
40119	762	12	of	of	IN
40119	762	13	vision	vision	NN
40119	762	14	is	be	VBZ
40119	762	15	that	that	DT
40119	762	16	known	know	VBN
40119	762	17	as	as	IN
40119	762	18	the	the	DT
40119	762	19	persistence	persistence	NN
40119	762	20	of	of	IN
40119	762	21	impressions	impression	NNS
40119	762	22	.	.	.
40119	763	1	The	the	DT
40119	763	2	sensation	sensation	NN
40119	763	3	of	of	IN
40119	763	4	sight	sight	NN
40119	763	5	which	which	WDT
40119	763	6	is	be	VBZ
40119	763	7	produced	produce	VBN
40119	763	8	by	by	IN
40119	763	9	an	an	DT
40119	763	10	illuminated	illuminated	JJ
40119	763	11	object	object	NN
40119	763	12	does	do	VBZ
40119	763	13	not	not	RB
40119	763	14	cease	cease	VB
40119	763	15	at	at	IN
40119	763	16	the	the	DT
40119	763	17	moment	moment	NN
40119	763	18	when	when	WRB
40119	763	19	the	the	DT
40119	763	20	exciting	exciting	JJ
40119	763	21	cause	cause	NN
40119	763	22	is	be	VBZ
40119	763	23	removed	remove	VBN
40119	763	24	or	or	CC
40119	763	25	changed	change	VBN
40119	763	26	in	in	IN
40119	763	27	position	position	NN
40119	763	28	;	;	:
40119	763	29	it	-PRON-	PRP
40119	763	30	continues	continue	VBZ
40119	763	31	for	for	IN
40119	763	32	a	a	DT
40119	763	33	period	period	NN
40119	763	34	which	which	WDT
40119	763	35	is	be	VBZ
40119	763	36	generally	generally	RB
40119	763	37	said	say	VBN
40119	763	38	to	to	TO
40119	763	39	be	be	VB
40119	763	40	about	about	RB
40119	763	41	a	a	DT
40119	763	42	tenth	tenth	NN
40119	763	43	of	of	IN
40119	763	44	a	a	DT
40119	763	45	second	second	JJ
40119	763	46	,	,	,
40119	763	47	but	but	CC
40119	763	48	may	may	MD
40119	763	49	sometimes	sometimes	RB
40119	763	50	be	be	VB
40119	763	51	much	much	RB
40119	763	52	more	more	RBR
40119	763	53	or	or	CC
40119	763	54	less	less	RBR
40119	763	55	.	.	.
40119	764	1	It	-PRON-	PRP
40119	764	2	is	be	VBZ
40119	764	3	for	for	IN
40119	764	4	this	this	DT
40119	764	5	reason	reason	NN
40119	764	6	that	that	WDT
40119	764	7	we	-PRON-	PRP
40119	764	8	can	can	MD
40119	764	9	not	not	RB
40119	764	10	see	see	VB
40119	764	11	the	the	DT
40119	764	12	details	detail	NNS
40119	764	13	of	of	IN
40119	764	14	anything	anything	NN
40119	764	15	which	which	WDT
40119	764	16	is	be	VBZ
40119	764	17	in	in	IN
40119	764	18	rapid	rapid	JJ
40119	764	19	motion	motion	NN
40119	764	20	,	,	,
40119	764	21	but	but	CC
40119	764	22	only	only	RB
40119	764	23	an	an	DT
40119	764	24	indistinct	indistinct	JJ
40119	764	25	blur	blur	NN
40119	764	26	,	,	,
40119	764	27	resulting	result	VBG
40119	764	28	from	from	IN
40119	764	29	the	the	DT
40119	764	30	confusion	confusion	NN
40119	764	31	of	of	IN
40119	764	32	successive	successive	JJ
40119	764	33	impressions	impression	NNS
40119	764	34	.	.	.
40119	765	1	If	if	IN
40119	765	2	a	a	DT
40119	765	3	cardboard	cardboard	NN
40119	765	4	disk	disk	NN
40119	765	5	,	,	,
40119	765	6	which	which	WDT
40119	765	7	is	be	VBZ
40119	765	8	painted	paint	VBN
40119	765	9	in	in	IN
40119	765	10	conspicuous	conspicuous	JJ
40119	765	11	black	black	JJ
40119	765	12	and	and	CC
40119	765	13	white	white	JJ
40119	765	14	sectors	sector	NNS
40119	765	15	is	be	VBZ
40119	765	16	caused	cause	VBN
40119	765	17	to	to	TO
40119	765	18	rotate	rotate	VB
40119	765	19	at	at	IN
40119	765	20	a	a	DT
40119	765	21	sufficiently	sufficiently	RB
40119	765	22	high	high	JJ
40119	765	23	speed	speed	NN
40119	765	24	,	,	,
40119	765	25	the	the	DT
40119	765	26	divisions	division	NNS
40119	765	27	are	be	VBP
40119	765	28	completely	completely	RB
40119	765	29	lost	lose	VBN
40119	765	30	sight	sight	NN
40119	765	31	of	of	IN
40119	765	32	,	,	,
40119	765	33	and	and	CC
40119	765	34	the	the	DT
40119	765	35	whole	whole	JJ
40119	765	36	surface	surface	NN
40119	765	37	appears	appear	VBZ
40119	765	38	to	to	TO
40119	765	39	be	be	VB
40119	765	40	of	of	IN
40119	765	41	a	a	DT
40119	765	42	uniformly	uniformly	RB
40119	765	43	grey	grey	JJ
40119	765	44	hue	hue	NN
40119	765	45	.	.	.
40119	766	1	But	but	CC
40119	766	2	if	if	IN
40119	766	3	the	the	DT
40119	766	4	rapidly	rapidly	RB
40119	766	5	rotating	rotate	VBG
40119	766	6	disk	disk	NN
40119	766	7	is	be	VBZ
40119	766	8	illuminated	illuminate	VBN
40119	766	9	by	by	IN
40119	766	10	a	a	DT
40119	766	11	properly	properly	RB
40119	766	12	timed	time	VBN
40119	766	13	series	series	NN
40119	766	14	of	of	IN
40119	766	15	electric	electric	JJ
40119	766	16	flashes	flash	NNS
40119	766	17	,	,	,
40119	766	18	it	-PRON-	PRP
40119	766	19	looks	look	VBZ
40119	766	20	as	as	IN
40119	766	21	if	if	IN
40119	766	22	it	-PRON-	PRP
40119	766	23	were	be	VBD
40119	766	24	at	at	IN
40119	766	25	rest	rest	NN
40119	766	26	,	,	,
40119	766	27	and	and	CC
40119	766	28	in	in	IN
40119	766	29	spite	spite	NN
40119	766	30	of	of	IN
40119	766	31	the	the	DT
40119	766	32	intermittent	intermittent	JJ
40119	766	33	nature	nature	NN
40119	766	34	of	of	IN
40119	766	35	the	the	DT
40119	766	36	light	light	NN
40119	766	37	,	,	,
40119	766	38	the	the	DT
40119	766	39	black	black	JJ
40119	766	40	and	and	CC
40119	766	41	white	white	JJ
40119	766	42	sectors	sector	NNS
40119	766	43	can	can	MD
40119	766	44	be	be	VB
40119	766	45	seen	see	VBN
40119	766	46	quite	quite	RB
40119	766	47	continuously	continuously	RB
40119	766	48	,	,	,
40119	766	49	though	though	IN
40119	766	50	as	as	IN
40119	766	51	a	a	DT
40119	766	52	matter	matter	NN
40119	766	53	of	of	IN
40119	766	54	fact	fact	NN
40119	766	55	the	the	DT
40119	766	56	intervals	interval	NNS
40119	766	57	of	of	IN
40119	766	58	darkness	darkness	NN
40119	766	59	are	be	VBP
40119	766	60	very	very	RB
40119	766	61	much	much	RB
40119	766	62	longer	long	JJR
40119	766	63	than	than	IN
40119	766	64	those	those	DT
40119	766	65	of	of	IN
40119	766	66	illumination	illumination	NN
40119	766	67	.	.	.
40119	767	1	Persistent	persistent	JJ
40119	767	2	impressions	impression	NNS
40119	767	3	of	of	IN
40119	767	4	this	this	DT
40119	767	5	kind	kind	NN
40119	767	6	are	be	VBP
40119	767	7	often	often	RB
40119	767	8	spoken	speak	VBN
40119	767	9	of	of	IN
40119	767	10	as	as	RB
40119	767	11	positive	positive	JJ
40119	767	12	after	after	NN
40119	767	13	-	-	HYPH
40119	767	14	images	image	NNS
40119	767	15	.	.	.
40119	768	1	There	there	EX
40119	768	2	is	be	VBZ
40119	768	3	a	a	DT
40119	768	4	very	very	RB
40119	768	5	remarkable	remarkable	JJ
40119	768	6	phenomenon	phenomenon	NN
40119	768	7	accompanying	accompany	VBG
40119	768	8	the	the	DT
40119	768	9	formation	formation	NN
40119	768	10	of	of	IN
40119	768	11	positive	positive	JJ
40119	768	12	after	after	NN
40119	768	13	-	-	HYPH
40119	768	14	images	image	NNS
40119	768	15	,	,	,
40119	768	16	especially	especially	RB
40119	768	17	those	those	DT
40119	768	18	following	follow	VBG
40119	768	19	brief	brief	JJ
40119	768	20	illumination	illumination	NN
40119	768	21	,	,	,
40119	768	22	which	which	WDT
40119	768	23	seems	seem	VBZ
40119	768	24	,	,	,
40119	768	25	until	until	IN
40119	768	26	comparatively	comparatively	RB
40119	768	27	recent	recent	JJ
40119	768	28	times	time	NNS
40119	768	29	,	,	,
40119	768	30	to	to	TO
40119	768	31	have	have	VB
40119	768	32	entirely	entirely	RB
40119	768	33	escaped	escape	VBN
40119	768	34	the	the	DT
40119	768	35	notice	notice	NN
40119	768	36	of	of	IN
40119	768	37	the	the	DT
40119	768	38	most	most	RBS
40119	768	39	acute	acute	JJ
40119	768	40	observers	observer	NNS
40119	768	41	.	.	.
40119	769	1	It	-PRON-	PRP
40119	769	2	was	be	VBD
40119	769	3	first	first	RB
40119	769	4	observed	observe	VBN
40119	769	5	accidentally	accidentally	RB
40119	769	6	by	by	IN
40119	769	7	Professor	Professor	NNP
40119	769	8	C.	C.	NNP
40119	769	9	A.	A.	NNP
40119	770	1	Young	young	JJ
40119	770	2	,	,	,
40119	770	3	when	when	WRB
40119	770	4	he	-PRON-	PRP
40119	770	5	was	be	VBD
40119	770	6	experimenting	experiment	VBG
40119	770	7	with	with	IN
40119	770	8	a	a	DT
40119	770	9	large	large	JJ
40119	770	10	electrical	electrical	JJ
40119	770	11	machine	machine	NN
40119	770	12	which	which	WDT
40119	770	13	had	have	VBD
40119	770	14	been	be	VBN
40119	770	15	newly	newly	RB
40119	770	16	acquired	acquire	VBN
40119	770	17	for	for	IN
40119	770	18	his	-PRON-	PRP$
40119	770	19	laboratory	laboratory	NN
40119	770	20	.	.	.
40119	771	1	He	-PRON-	PRP
40119	771	2	noticed	notice	VBD
40119	771	3	that	that	IN
40119	771	4	when	when	WRB
40119	771	5	a	a	DT
40119	771	6	powerful	powerful	JJ
40119	771	7	Leyden	Leyden	NNP
40119	771	8	jar	jar	NN
40119	771	9	discharge	discharge	NN
40119	771	10	took	take	VBD
40119	771	11	place	place	NN
40119	771	12	in	in	IN
40119	771	13	a	a	DT
40119	771	14	darkened	darken	VBN
40119	771	15	room	room	NN
40119	771	16	,	,	,
40119	771	17	any	any	DT
40119	771	18	conspicuous	conspicuous	JJ
40119	771	19	object	object	NN
40119	771	20	was	be	VBD
40119	771	21	seen	see	VBN
40119	771	22	twice	twice	RB
40119	771	23	at	at	IN
40119	771	24	least	least	JJS
40119	771	25	,	,	,
40119	771	26	with	with	IN
40119	771	27	an	an	DT
40119	771	28	interval	interval	NN
40119	771	29	of	of	IN
40119	771	30	a	a	DT
40119	771	31	trifle	trifle	RB
40119	771	32	less	less	JJR
40119	771	33	than	than	IN
40119	771	34	a	a	DT
40119	771	35	quarter	quarter	NN
40119	771	36	of	of	IN
40119	771	37	a	a	DT
40119	771	38	second	second	JJ
40119	771	39	,	,	,
40119	771	40	the	the	DT
40119	771	41	first	first	JJ
40119	771	42	time	time	NN
40119	771	43	vividly	vividly	RB
40119	771	44	,	,	,
40119	771	45	the	the	DT
40119	771	46	second	second	JJ
40119	771	47	time	time	NN
40119	771	48	faintly	faintly	RB
40119	771	49	.	.	.
40119	772	1	Often	often	RB
40119	772	2	it	-PRON-	PRP
40119	772	3	was	be	VBD
40119	772	4	seen	see	VBN
40119	772	5	a	a	DT
40119	772	6	third	third	JJ
40119	772	7	time	time	NN
40119	772	8	,	,	,
40119	772	9	and	and	CC
40119	772	10	sometimes	sometimes	RB
40119	772	11	,	,	,
40119	772	12	but	but	CC
40119	772	13	only	only	RB
40119	772	14	with	with	IN
40119	772	15	great	great	JJ
40119	772	16	difficulty	difficulty	NN
40119	772	17	,	,	,
40119	772	18	even	even	RB
40119	772	19	a	a	DT
40119	772	20	fourth	fourth	JJ
40119	772	21	time	time	NN
40119	772	22	.	.	.
40119	773	1	He	-PRON-	PRP
40119	773	2	gave	give	VBD
40119	773	3	to	to	IN
40119	773	4	this	this	DT
40119	773	5	phenomenon	phenomenon	VB
40119	773	6	the	the	DT
40119	773	7	name	name	NN
40119	773	8	of	of	IN
40119	773	9	recurrent	recurrent	JJ
40119	773	10	vision	vision	NN
40119	773	11	;	;	:
40119	773	12	it	-PRON-	PRP
40119	773	13	may	may	MD
40119	773	14	perhaps	perhaps	RB
40119	773	15	be	be	VB
40119	773	16	more	more	RBR
40119	773	17	appropriately	appropriately	RB
40119	773	18	denominated	denominate	VBN
40119	773	19	the	the	DT
40119	773	20	Young	young	JJ
40119	773	21	effect	effect	NN
40119	773	22	.	.	.
40119	774	1	By	by	IN
40119	774	2	means	mean	NNS
40119	774	3	of	of	IN
40119	774	4	the	the	DT
40119	774	5	powerful	powerful	JJ
40119	774	6	machine	machine	NN
40119	774	7	presented	present	VBD
40119	774	8	to	to	IN
40119	774	9	the	the	DT
40119	774	10	Royal	Royal	NNP
40119	774	11	Institution	Institution	NNP
40119	774	12	by	by	IN
40119	774	13	Mr.	Mr.	NNP
40119	774	14	Wimshurst	Wimshurst	NNP
40119	774	15	,	,	,
40119	774	16	used	use	VBN
40119	774	17	in	in	IN
40119	774	18	conjunction	conjunction	NN
40119	774	19	with	with	IN
40119	774	20	a	a	DT
40119	774	21	battery	battery	NN
40119	774	22	of	of	IN
40119	774	23	Leyden	Leyden	NNP
40119	774	24	jars	jar	NNS
40119	774	25	,	,	,
40119	774	26	the	the	DT
40119	774	27	Young	young	JJ
40119	774	28	effect	effect	NN
40119	774	29	has	have	VBZ
40119	774	30	been	be	VBN
40119	774	31	successfully	successfully	RB
40119	774	32	shown	show	VBN
40119	774	33	to	to	IN
40119	774	34	a	a	DT
40119	774	35	large	large	JJ
40119	774	36	assembly	assembly	NN
40119	774	37	.	.	.
40119	775	1	But	but	CC
40119	775	2	it	-PRON-	PRP
40119	775	3	is	be	VBZ
40119	775	4	quite	quite	RB
40119	775	5	easy	easy	JJ
40119	775	6	to	to	TO
40119	775	7	demonstrate	demonstrate	VB
40119	775	8	it	-PRON-	PRP
40119	775	9	on	on	IN
40119	775	10	a	a	DT
40119	775	11	small	small	JJ
40119	775	12	scale	scale	NN
40119	775	13	with	with	IN
40119	775	14	any	any	DT
40119	775	15	influence	influence	NN
40119	775	16	machine	machine	NN
40119	775	17	which	which	WDT
40119	775	18	will	will	MD
40119	775	19	give	give	VB
40119	775	20	a	a	DT
40119	775	21	spark	spark	NN
40119	775	22	about	about	IN
40119	775	23	an	an	DT
40119	775	24	inch	inch	NN
40119	775	25	long	long	RB
40119	775	26	.	.	.
40119	776	1	One	one	CD
40119	776	2	of	of	IN
40119	776	3	the	the	DT
40119	776	4	terminals	terminal	NNS
40119	776	5	of	of	IN
40119	776	6	the	the	DT
40119	776	7	machine	machine	NN
40119	776	8	should	should	MD
40119	776	9	be	be	VB
40119	776	10	connected	connect	VBN
40119	776	11	by	by	IN
40119	776	12	a	a	DT
40119	776	13	wire	wire	NN
40119	776	14	with	with	IN
40119	776	15	the	the	DT
40119	776	16	inner	inner	JJ
40119	776	17	coating	coating	NN
40119	776	18	of	of	IN
40119	776	19	a	a	DT
40119	776	20	half	half	JJ
40119	776	21	-	-	HYPH
40119	776	22	pint	pint	NN
40119	776	23	Leyden	Leyden	NNP
40119	776	24	jar	jar	NN
40119	776	25	,	,	,
40119	776	26	the	the	DT
40119	776	27	other	other	JJ
40119	776	28	with	with	IN
40119	776	29	the	the	DT
40119	776	30	outer	outer	JJ
40119	776	31	coating	coating	NN
40119	776	32	,	,	,
40119	776	33	and	and	CC
40119	776	34	the	the	DT
40119	776	35	discharging	discharging	NN
40119	776	36	balls	ball	NNS
40119	776	37	should	should	MD
40119	776	38	be	be	VB
40119	776	39	set	set	VBN
40119	776	40	a	a	DT
40119	776	41	quarter	quarter	NN
40119	776	42	of	of	IN
40119	776	43	an	an	DT
40119	776	44	inch	inch	NN
40119	776	45	apart	apart	RB
40119	776	46	.	.	.
40119	777	1	The	the	DT
40119	777	2	observer	observer	NN
40119	777	3	's	's	POS
40119	777	4	eyes	eye	NNS
40119	777	5	must	must	MD
40119	777	6	be	be	VB
40119	777	7	shielded	shield	VBN
40119	777	8	from	from	IN
40119	777	9	the	the	DT
40119	777	10	direct	direct	JJ
40119	777	11	light	light	NN
40119	777	12	of	of	IN
40119	777	13	the	the	DT
40119	777	14	spark	spark	NN
40119	777	15	by	by	IN
40119	777	16	any	any	DT
40119	777	17	convenient	convenient	JJ
40119	777	18	screen	screen	NN
40119	777	19	,	,	,
40119	777	20	such	such	JJ
40119	777	21	as	as	IN
40119	777	22	a	a	DT
40119	777	23	large	large	JJ
40119	777	24	book	book	NN
40119	777	25	set	set	VBN
40119	777	26	on	on	IN
40119	777	27	end	end	NN
40119	777	28	.	.	.
40119	778	1	The	the	DT
40119	778	2	best	good	JJS
40119	778	3	object	object	NN
40119	778	4	for	for	IN
40119	778	5	the	the	DT
40119	778	6	experiment	experiment	NN
40119	778	7	is	be	VBZ
40119	778	8	a	a	DT
40119	778	9	sheet	sheet	NN
40119	778	10	of	of	IN
40119	778	11	white	white	JJ
40119	778	12	paper	paper	NN
40119	778	13	,	,	,
40119	778	14	placed	place	VBN
40119	778	15	in	in	IN
40119	778	16	an	an	DT
40119	778	17	upright	upright	JJ
40119	778	18	position	position	NN
40119	778	19	a	a	DT
40119	778	20	few	few	JJ
40119	778	21	inches	inch	NNS
40119	778	22	away	away	RB
40119	778	23	from	from	IN
40119	778	24	the	the	DT
40119	778	25	terminals	terminal	NNS
40119	778	26	of	of	IN
40119	778	27	the	the	DT
40119	778	28	machine	machine	NN
40119	778	29	and	and	CC
40119	778	30	exposed	expose	VBD
40119	778	31	to	to	IN
40119	778	32	the	the	DT
40119	778	33	full	full	JJ
40119	778	34	light	light	NN
40119	778	35	of	of	IN
40119	778	36	the	the	DT
40119	778	37	discharge	discharge	NN
40119	778	38	.	.	.
40119	779	1	The	the	DT
40119	779	2	room	room	NN
40119	779	3	being	be	VBG
40119	779	4	darkened	darken	VBN
40119	779	5	,	,	,
40119	779	6	let	let	VB
40119	779	7	the	the	DT
40119	779	8	machine	machine	NN
40119	779	9	be	be	VB
40119	779	10	worked	work	VBN
40119	779	11	slowly	slowly	RB
40119	779	12	,	,	,
40119	779	13	while	while	IN
40119	779	14	the	the	DT
40119	779	15	eyes	eye	NNS
40119	779	16	are	be	VBP
40119	779	17	turned	turn	VBN
40119	779	18	towards	towards	IN
40119	779	19	the	the	DT
40119	779	20	white	white	JJ
40119	779	21	paper	paper	NN
40119	779	22	.	.	.
40119	780	1	This	this	DT
40119	780	2	will	will	MD
40119	780	3	be	be	VB
40119	780	4	seen	see	VBN
40119	780	5	for	for	IN
40119	780	6	a	a	DT
40119	780	7	moment	moment	NN
40119	780	8	when	when	WRB
40119	780	9	the	the	DT
40119	780	10	spark	spark	NN
40119	780	11	passes	pass	VBZ
40119	780	12	,	,	,
40119	780	13	and	and	CC
40119	780	14	,	,	,
40119	780	15	after	after	IN
40119	780	16	a	a	DT
40119	780	17	dark	dark	JJ
40119	780	18	interval	interval	NN
40119	780	19	of	of	IN
40119	780	20	about	about	RB
40119	780	21	one	one	CD
40119	780	22	-	-	HYPH
40119	780	23	fifth	fifth	NN
40119	780	24	of	of	IN
40119	780	25	a	a	DT
40119	780	26	second	second	JJ
40119	780	27	,	,	,
40119	780	28	it	-PRON-	PRP
40119	780	29	will	will	MD
40119	780	30	make	make	VB
40119	780	31	another	another	DT
40119	780	32	brief	brief	JJ
40119	780	33	appearance	appearance	NN
40119	780	34	.	.	.
40119	781	1	After	after	IN
40119	781	2	a	a	DT
40119	781	3	further	further	JJ
40119	781	4	short	short	JJ
40119	781	5	interval	interval	NN
40119	781	6	of	of	IN
40119	781	7	darkness	darkness	NN
40119	781	8	,	,	,
40119	781	9	a	a	DT
40119	781	10	second	second	JJ
40119	781	11	recurrent	recurrent	JJ
40119	781	12	image	image	NN
40119	781	13	will	will	MD
40119	781	14	often	often	RB
40119	781	15	be	be	VB
40119	781	16	seen	see	VBN
40119	781	17	.	.	.
40119	782	1	It	-PRON-	PRP
40119	782	2	may	may	MD
40119	782	3	be	be	VB
40119	782	4	remarked	remark	VBN
40119	782	5	that	that	IN
40119	782	6	the	the	DT
40119	782	7	effect	effect	NN
40119	782	8	is	be	VBZ
40119	782	9	most	most	RBS
40119	782	10	striking	striking	JJ
40119	782	11	when	when	WRB
40119	782	12	the	the	DT
40119	782	13	eyes	eye	NNS
40119	782	14	are	be	VBP
40119	782	15	not	not	RB
40119	782	16	directed	direct	VBN
40119	782	17	exactly	exactly	RB
40119	782	18	upon	upon	IN
40119	782	19	the	the	DT
40119	782	20	white	white	JJ
40119	782	21	paper	paper	NN
40119	782	22	,	,	,
40119	782	23	but	but	CC
40119	782	24	above	above	IN
40119	782	25	or	or	CC
40119	782	26	on	on	IN
40119	782	27	one	one	CD
40119	782	28	side	side	NN
40119	782	29	of	of	IN
40119	782	30	it	-PRON-	PRP
40119	782	31	;	;	:
40119	782	32	the	the	DT
40119	782	33	proper	proper	JJ
40119	782	34	distance	distance	NN
40119	782	35	of	of	IN
40119	782	36	the	the	DT
40119	782	37	paper	paper	NN
40119	782	38	from	from	IN
40119	782	39	the	the	DT
40119	782	40	spark	spark	NN
40119	782	41	-	-	HYPH
40119	782	42	gap	gap	NN
40119	782	43	should	should	MD
40119	782	44	be	be	VB
40119	782	45	found	find	VBN
40119	782	46	by	by	IN
40119	782	47	trial	trial	NN
40119	782	48	.	.	.
40119	783	1	Under	under	IN
40119	783	2	favourable	favourable	JJ
40119	783	3	conditions	condition	NNS
40119	783	4	I	-PRON-	PRP
40119	783	5	have	have	VBP
40119	783	6	observed	observe	VBN
40119	783	7	as	as	RB
40119	783	8	many	many	JJ
40119	783	9	as	as	IN
40119	783	10	six	six	CD
40119	783	11	or	or	CC
40119	783	12	seven	seven	CD
40119	783	13	reappearances	reappearance	NNS
40119	783	14	of	of	IN
40119	783	15	an	an	DT
40119	783	16	object	object	NN
40119	783	17	which	which	WDT
40119	783	18	was	be	VBD
40119	783	19	illuminated	illuminate	VBN
40119	783	20	by	by	IN
40119	783	21	a	a	DT
40119	783	22	single	single	JJ
40119	783	23	discharge	discharge	NN
40119	783	24	.	.	.
40119	784	1	These	these	DT
40119	784	2	followed	follow	VBD
40119	784	3	one	one	CD
40119	784	4	another	another	DT
40119	784	5	at	at	IN
40119	784	6	the	the	DT
40119	784	7	usual	usual	JJ
40119	784	8	rate	rate	NN
40119	784	9	--	--	:
40119	784	10	about	about	RB
40119	784	11	five	five	CD
40119	784	12	in	in	IN
40119	784	13	a	a	DT
40119	784	14	second	second	JJ
40119	784	15	--	--	:
40119	784	16	and	and	CC
40119	784	17	produced	produce	VBD
40119	784	18	a	a	DT
40119	784	19	twinkling	twinkling	NN
40119	784	20	or	or	CC
40119	784	21	quivering	quiver	VBG
40119	784	22	effect	effect	NN
40119	784	23	,	,	,
40119	784	24	closely	closely	RB
40119	784	25	resembling	resemble	VBG
40119	784	26	that	that	IN
40119	784	27	attending	attend	VBG
40119	784	28	a	a	DT
40119	784	29	flash	flash	NN
40119	784	30	of	of	IN
40119	784	31	lightning	lightning	NN
40119	784	32	which	which	WDT
40119	784	33	is	be	VBZ
40119	784	34	not	not	RB
40119	784	35	directly	directly	RB
40119	784	36	seen	see	VBN
40119	784	37	.	.	.
40119	785	1	There	there	EX
40119	785	2	can	can	MD
40119	785	3	indeed	indeed	RB
40119	785	4	be	be	VB
40119	785	5	little	little	JJ
40119	785	6	doubt	doubt	NN
40119	785	7	that	that	IN
40119	785	8	the	the	DT
40119	785	9	proverbial	proverbial	JJ
40119	785	10	quiver	quiver	NN
40119	785	11	of	of	IN
40119	785	12	the	the	DT
40119	785	13	lightning	lightning	NN
40119	785	14	-	-	HYPH
40119	785	15	flash	flash	NN
40119	785	16	is	be	VBZ
40119	785	17	in	in	IN
40119	785	18	many	many	JJ
40119	785	19	cases	case	NNS
40119	785	20	merely	merely	RB
40119	785	21	an	an	DT
40119	785	22	effect	effect	NN
40119	785	23	of	of	IN
40119	785	24	recurrent	recurrent	JJ
40119	785	25	vision	vision	NN
40119	785	26	,	,	,
40119	785	27	though	though	IN
40119	785	28	sometimes	sometimes	RB
40119	785	29	,	,	,
40119	785	30	of	of	IN
40119	785	31	course	course	NN
40119	785	32	,	,	,
40119	785	33	as	as	IN
40119	785	34	has	have	VBZ
40119	785	35	been	be	VBN
40119	785	36	shown	show	VBN
40119	785	37	by	by	IN
40119	785	38	photographs	photograph	NNS
40119	785	39	,	,	,
40119	785	40	the	the	DT
40119	785	41	discharge	discharge	NN
40119	785	42	is	be	VBZ
40119	785	43	really	really	RB
40119	785	44	multiple	multiple	JJ
40119	785	45	.	.	.
40119	786	1	Some	some	DT
40119	786	2	years	year	NNS
40119	786	3	ago	ago	RB
40119	786	4	I	-PRON-	PRP
40119	786	5	called	call	VBD
40119	786	6	attention	attention	NN
40119	786	7	to	to	IN
40119	786	8	a	a	DT
40119	786	9	very	very	RB
40119	786	10	different	different	JJ
40119	786	11	method	method	NN
40119	786	12	of	of	IN
40119	786	13	exhibiting	exhibit	VBG
40119	786	14	a	a	DT
40119	786	15	recurrent	recurrent	JJ
40119	786	16	image	image	NN
40119	786	17	.	.	.
40119	787	1	The	the	DT
40119	787	2	apparatus	apparatus	NN
40119	787	3	used	use	VBN
40119	787	4	for	for	IN
40119	787	5	the	the	DT
40119	787	6	purpose	purpose	NN
40119	787	7	consists	consist	VBZ
40119	787	8	of	of	IN
40119	787	9	a	a	DT
40119	787	10	vacuum	vacuum	NN
40119	787	11	tube	tube	NN
40119	787	12	mounted	mount	VBN
40119	787	13	in	in	IN
40119	787	14	the	the	DT
40119	787	15	usual	usual	JJ
40119	787	16	way	way	NN
40119	787	17	upon	upon	IN
40119	787	18	a	a	DT
40119	787	19	horizontal	horizontal	JJ
40119	787	20	axis	axi	NNS
40119	787	21	capable	capable	JJ
40119	787	22	of	of	IN
40119	787	23	rotation	rotation	NN
40119	787	24	.	.	.
40119	788	1	When	when	WRB
40119	788	2	the	the	DT
40119	788	3	tube	tube	NN
40119	788	4	is	be	VBZ
40119	788	5	illuminated	illuminate	VBN
40119	788	6	by	by	IN
40119	788	7	a	a	DT
40119	788	8	rapid	rapid	JJ
40119	788	9	succession	succession	NN
40119	788	10	of	of	IN
40119	788	11	discharges	discharge	NNS
40119	788	12	from	from	IN
40119	788	13	an	an	DT
40119	788	14	induction	induction	NN
40119	788	15	coil	coil	NN
40119	788	16	,	,	,
40119	788	17	and	and	CC
40119	788	18	is	be	VBZ
40119	788	19	made	make	VBN
40119	788	20	to	to	TO
40119	788	21	rotate	rotate	VB
40119	788	22	very	very	RB
40119	788	23	slowly	slowly	RB
40119	788	24	by	by	IN
40119	788	25	clockwork	clockwork	NN
40119	788	26	(	(	-LRB-
40119	788	27	turning	turn	VBG
40119	788	28	once	once	RB
40119	788	29	in	in	IN
40119	788	30	every	every	DT
40119	788	31	two	two	CD
40119	788	32	or	or	CC
40119	788	33	three	three	CD
40119	788	34	seconds	second	NNS
40119	788	35	)	)	-RRB-
40119	788	36	,	,	,
40119	788	37	a	a	DT
40119	788	38	very	very	RB
40119	788	39	curious	curious	JJ
40119	788	40	phenomenon	phenomenon	NN
40119	788	41	may	may	MD
40119	788	42	be	be	VB
40119	788	43	noticed	notice	VBN
40119	788	44	.	.	.
40119	789	1	At	at	IN
40119	789	2	a	a	DT
40119	789	3	distance	distance	NN
40119	789	4	of	of	IN
40119	789	5	a	a	DT
40119	789	6	few	few	JJ
40119	789	7	degrees	degree	NNS
40119	789	8	behind	behind	IN
40119	789	9	the	the	DT
40119	789	10	tube	tube	NN
40119	789	11	and	and	CC
40119	789	12	separated	separate	VBD
40119	789	13	from	from	IN
40119	789	14	it	-PRON-	PRP
40119	789	15	by	by	IN
40119	789	16	an	an	DT
40119	789	17	interval	interval	NN
40119	789	18	of	of	IN
40119	789	19	perfect	perfect	JJ
40119	789	20	darkness	darkness	NN
40119	789	21	,	,	,
40119	789	22	comes	come	VBZ
40119	789	23	a	a	DT
40119	789	24	ghost	ghost	NN
40119	789	25	.	.	.
40119	790	1	This	this	DT
40119	790	2	ghost	ghost	NN
40119	790	3	is	be	VBZ
40119	790	4	in	in	IN
40119	790	5	form	form	NN
40119	790	6	an	an	DT
40119	790	7	exact	exact	JJ
40119	790	8	reproduction	reproduction	NN
40119	790	9	of	of	IN
40119	790	10	the	the	DT
40119	790	11	tube	tube	NN
40119	790	12	;	;	:
40119	790	13	it	-PRON-	PRP
40119	790	14	is	be	VBZ
40119	790	15	very	very	RB
40119	790	16	clearly	clearly	RB
40119	790	17	defined	define	VBN
40119	790	18	,	,	,
40119	790	19	and	and	CC
40119	790	20	though	though	IN
40119	790	21	its	-PRON-	PRP$
40119	790	22	apparent	apparent	JJ
40119	790	23	luminosity	luminosity	NN
40119	790	24	is	be	VBZ
40119	790	25	somewhat	somewhat	RB
40119	790	26	feeble	feeble	JJ
40119	790	27	,	,	,
40119	790	28	it	-PRON-	PRP
40119	790	29	can	can	MD
40119	790	30	in	in	IN
40119	790	31	most	most	JJS
40119	790	32	cases	case	NNS
40119	790	33	be	be	VB
40119	790	34	seen	see	VBN
40119	790	35	without	without	IN
40119	790	36	difficulty	difficulty	NN
40119	790	37	.	.	.
40119	791	1	The	the	DT
40119	791	2	varied	varied	JJ
40119	791	3	colours	colour	NNS
40119	791	4	of	of	IN
40119	791	5	the	the	DT
40119	791	6	original	original	JJ
40119	791	7	are	be	VBP
40119	791	8	,	,	,
40119	791	9	however	however	RB
40119	791	10	,	,	,
40119	791	11	absent	absent	JJ
40119	791	12	,	,	,
40119	791	13	the	the	DT
40119	791	14	whole	whole	NN
40119	791	15	of	of	IN
40119	791	16	the	the	DT
40119	791	17	phantom	phantom	JJ
40119	791	18	tube	tube	NN
40119	791	19	being	be	VBG
40119	791	20	of	of	IN
40119	791	21	a	a	DT
40119	791	22	uniform	uniform	JJ
40119	791	23	bluish	bluish	NN
40119	791	24	or	or	CC
40119	791	25	violet	violet	NN
40119	791	26	tint	tint	NN
40119	791	27	.	.	.
40119	792	1	If	if	IN
40119	792	2	the	the	DT
40119	792	3	rotation	rotation	NN
40119	792	4	is	be	VBZ
40119	792	5	suddenly	suddenly	RB
40119	792	6	stopped	stop	VBN
40119	792	7	the	the	DT
40119	792	8	ghost	ghost	NN
40119	792	9	still	still	RB
40119	792	10	moves	move	VBZ
40119	792	11	steadily	steadily	RB
40119	792	12	on	on	RP
40119	792	13	until	until	IN
40119	792	14	it	-PRON-	PRP
40119	792	15	reaches	reach	VBZ
40119	792	16	the	the	DT
40119	792	17	luminous	luminous	JJ
40119	792	18	tube	tube	NN
40119	792	19	,	,	,
40119	792	20	with	with	IN
40119	792	21	which	which	WDT
40119	792	22	it	-PRON-	PRP
40119	792	23	coalesces	coalesce	VBZ
40119	792	24	and	and	CC
40119	792	25	so	so	RB
40119	792	26	disappears	disappear	VBZ
40119	792	27	.	.	.
40119	793	1	(	(	-LRB-
40119	793	2	See	see	VB
40119	793	3	Fig	fig	NN
40119	793	4	.	.	.
40119	794	1	36	36	CD
40119	794	2	,	,	,
40119	794	3	where	where	WRB
40119	794	4	the	the	DT
40119	794	5	recurrent	recurrent	JJ
40119	794	6	image	image	NN
40119	794	7	is	be	VBZ
40119	794	8	represented	represent	VBN
40119	794	9	by	by	IN
40119	794	10	dotted	dotted	JJ
40119	794	11	lines	line	NNS
40119	794	12	.	.	.
40119	794	13	)	)	-RRB-
40119	795	1	[	[	-LRB-
40119	795	2	Illustration	illustration	NN
40119	795	3	:	:	:
40119	795	4	_	_	NNP
40119	795	5	Fig	Fig	NNP
40119	795	6	.	.	.
40119	796	1	36.--Recurrent	36.--recurrent	CD
40119	796	2	Vision	Vision	NNP
40119	796	3	demonstrated	demonstrate	VBD
40119	796	4	with	with	IN
40119	796	5	a	a	DT
40119	796	6	Vacuum	Vacuum	NNP
40119	796	7	Tube	Tube	NNP
40119	796	8	.	.	.
40119	796	9	_	_	NNP
40119	796	10	]	]	-RRB-
40119	796	11	More	more	RBR
40119	796	12	recently	recently	RB
40119	796	13	a	a	DT
40119	796	14	fresh	fresh	JJ
40119	796	15	series	series	NN
40119	796	16	of	of	IN
40119	796	17	experiments	experiment	NNS
40119	796	18	were	be	VBD
40119	796	19	undertaken	undertake	VBN
40119	796	20	in	in	IN
40119	796	21	connection	connection	NN
40119	796	22	with	with	IN
40119	796	23	the	the	DT
40119	796	24	Young	young	JJ
40119	796	25	effect	effect	NN
40119	796	26	and	and	CC
40119	796	27	certain	certain	JJ
40119	796	28	allied	ally	VBN
40119	796	29	matters	matter	NNS
40119	796	30	,	,	,
40119	796	31	the	the	DT
40119	796	32	results	result	NNS
40119	796	33	being	be	VBG
40119	796	34	embodied	embody	VBN
40119	796	35	in	in	IN
40119	796	36	a	a	DT
40119	796	37	communication	communication	NN
40119	796	38	to	to	IN
40119	796	39	the	the	DT
40119	796	40	Royal	Royal	NNP
40119	796	41	Society	Society	NNP
40119	796	42	(	(	-LRB-
40119	796	43	Proc	Proc	NNP
40119	796	44	.	.	.
40119	797	1	Roy	Roy	NNP
40119	797	2	.	.	.
40119	798	1	Soc	Soc	NNP
40119	798	2	.	.	NNP
40119	798	3	,	,	,
40119	798	4	1894	1894	CD
40119	798	5	,	,	,
40119	798	6	vol	vol	NNP
40119	798	7	.	.	.
40119	799	1	56	56	CD
40119	799	2	,	,	,
40119	799	3	p.	p.	NN
40119	799	4	132	132	CD
40119	799	5	)	)	-RRB-
40119	799	6	.	.	.
40119	800	1	Among	among	IN
40119	800	2	other	other	JJ
40119	800	3	things	thing	NNS
40119	800	4	an	an	DT
40119	800	5	attempt	attempt	NN
40119	800	6	was	be	VBD
40119	800	7	made	make	VBN
40119	800	8	to	to	TO
40119	800	9	ascertain	ascertain	VB
40119	800	10	how	how	WRB
40119	800	11	far	far	RB
40119	800	12	a	a	DT
40119	800	13	recurrent	recurrent	JJ
40119	800	14	image	image	NN
40119	800	15	was	be	VBD
40119	800	16	affected	affect	VBN
40119	800	17	by	by	IN
40119	800	18	the	the	DT
40119	800	19	colour	colour	NN
40119	800	20	of	of	IN
40119	800	21	the	the	DT
40119	800	22	exciting	exciting	JJ
40119	800	23	light	light	NN
40119	800	24	.	.	.
40119	801	1	With	with	IN
40119	801	2	this	this	DT
40119	801	3	object	object	NN
40119	801	4	two	two	CD
40119	801	5	methods	method	NNS
40119	801	6	of	of	IN
40119	801	7	experimenting	experiment	VBG
40119	801	8	were	be	VBD
40119	801	9	employed	employ	VBN
40119	801	10	.	.	.
40119	802	1	In	in	IN
40119	802	2	the	the	DT
40119	802	3	first	first	JJ
40119	802	4	,	,	,
40119	802	5	coloured	colour	VBN
40119	802	6	light	light	NN
40119	802	7	was	be	VBD
40119	802	8	obtained	obtain	VBN
40119	802	9	by	by	IN
40119	802	10	passing	pass	VBG
40119	802	11	white	white	JJ
40119	802	12	light	light	NN
40119	802	13	through	through	IN
40119	802	14	coloured	coloured	JJ
40119	802	15	glasses	glass	NNS
40119	802	16	;	;	:
40119	802	17	in	in	IN
40119	802	18	the	the	DT
40119	802	19	second	second	JJ
40119	802	20	and	and	CC
40119	802	21	more	more	RBR
40119	802	22	perfect	perfect	JJ
40119	802	23	series	series	NN
40119	802	24	of	of	IN
40119	802	25	experiments	experiment	NNS
40119	802	26	,	,	,
40119	802	27	the	the	DT
40119	802	28	pure	pure	JJ
40119	802	29	coloured	coloured	JJ
40119	802	30	light	light	NN
40119	802	31	of	of	IN
40119	802	32	the	the	DT
40119	802	33	spectrum	spectrum	NN
40119	802	34	was	be	VBD
40119	802	35	used	use	VBN
40119	802	36	.	.	.
40119	803	1	Among	among	IN
40119	803	2	other	other	JJ
40119	803	3	results	result	NNS
40119	803	4	it	-PRON-	PRP
40119	803	5	was	be	VBD
40119	803	6	found	find	VBN
40119	803	7	that	that	IN
40119	803	8	,	,	,
40119	803	9	_	_	NNP
40119	803	10	cæteris	cæteris	NNP
40119	803	11	paribus	paribus	NNP
40119	803	12	_	_	NNP
40119	803	13	,	,	,
40119	803	14	the	the	DT
40119	803	15	recurrent	recurrent	JJ
40119	803	16	image	image	NN
40119	803	17	was	be	VBD
40119	803	18	much	much	RB
40119	803	19	stronger	strong	JJR
40119	803	20	with	with	IN
40119	803	21	green	green	JJ
40119	803	22	light	light	NN
40119	803	23	than	than	IN
40119	803	24	with	with	IN
40119	803	25	any	any	DT
40119	803	26	other	other	JJ
40119	803	27	,	,	,
40119	803	28	and	and	CC
40119	803	29	that	that	IN
40119	803	30	when	when	WRB
40119	803	31	the	the	DT
40119	803	32	excitation	excitation	NN
40119	803	33	was	be	VBD
40119	803	34	produced	produce	VBN
40119	803	35	by	by	IN
40119	803	36	pure	pure	JJ
40119	803	37	red	red	JJ
40119	803	38	light	light	NN
40119	803	39	,	,	,
40119	803	40	however	however	RB
40119	803	41	intense	intense	JJ
40119	803	42	,	,	,
40119	803	43	there	there	EX
40119	803	44	was	be	VBD
40119	803	45	no	no	DT
40119	803	46	recurrent	recurrent	JJ
40119	803	47	image	image	NN
40119	803	48	at	at	RB
40119	803	49	all	all	RB
40119	803	50	.	.	.
40119	804	1	[	[	-LRB-
40119	804	2	Illustration	illustration	NN
40119	804	3	:	:	:
40119	804	4	_	_	NNP
40119	804	5	Fig	Fig	NNP
40119	804	6	.	.	.
40119	805	1	37.--Recurrent	37.--recurrent	LS
40119	805	2	Vision	vision	NN
40119	805	3	with	with	IN
40119	805	4	Rotating	Rotating	NNP
40119	805	5	Disk	Disk	NNP
40119	805	6	.	.	.
40119	805	7	_	_	NNP
40119	805	8	]	]	-RRB-
40119	805	9	For	for	IN
40119	805	10	a	a	DT
40119	805	11	repetition	repetition	NN
40119	805	12	of	of	IN
40119	805	13	my	-PRON-	PRP$
40119	805	14	first	first	JJ
40119	805	15	experiment	experiment	NN
40119	805	16	a	a	DT
40119	805	17	mechanical	mechanical	JJ
40119	805	18	lantern	lantern	JJ
40119	805	19	slide	slide	NN
40119	805	20	is	be	VBZ
40119	805	21	required	require	VBN
40119	805	22	containing	contain	VBG
40119	805	23	a	a	DT
40119	805	24	metal	metal	NN
40119	805	25	disk	disk	NN
40119	805	26	about	about	RB
40119	805	27	three	three	CD
40119	805	28	inches	inch	NNS
40119	805	29	in	in	IN
40119	805	30	diameter	diameter	NN
40119	805	31	which	which	WDT
40119	805	32	can	can	MD
40119	805	33	be	be	VB
40119	805	34	caused	cause	VBN
40119	805	35	to	to	TO
40119	805	36	rotate	rotate	VB
40119	805	37	slowly	slowly	RB
40119	805	38	and	and	CC
40119	805	39	steadily	steadily	RB
40119	805	40	about	about	IN
40119	805	41	its	-PRON-	PRP$
40119	805	42	centre	centre	NN
40119	805	43	.	.	.
40119	806	1	Near	near	IN
40119	806	2	the	the	DT
40119	806	3	edge	edge	NN
40119	806	4	of	of	IN
40119	806	5	the	the	DT
40119	806	6	disk	disk	NN
40119	806	7	is	be	VBZ
40119	806	8	a	a	DT
40119	806	9	small	small	JJ
40119	806	10	circular	circular	JJ
40119	806	11	aperture	aperture	NN
40119	806	12	.	.	.
40119	807	1	The	the	DT
40119	807	2	slide	slide	NN
40119	807	3	is	be	VBZ
40119	807	4	placed	place	VBN
40119	807	5	in	in	IN
40119	807	6	a	a	DT
40119	807	7	limelight	limelight	NN
40119	807	8	lantern	lantern	NN
40119	807	9	,	,	,
40119	807	10	and	and	CC
40119	807	11	a	a	DT
40119	807	12	bright	bright	JJ
40119	807	13	image	image	NN
40119	807	14	of	of	IN
40119	807	15	the	the	DT
40119	807	16	hole	hole	NN
40119	807	17	is	be	VBZ
40119	807	18	focussed	focusse	VBN
40119	807	19	upon	upon	IN
40119	807	20	a	a	DT
40119	807	21	distant	distant	JJ
40119	807	22	screen	screen	NN
40119	807	23	,	,	,
40119	807	24	all	all	DT
40119	807	25	other	other	JJ
40119	807	26	light	light	NN
40119	807	27	being	be	VBG
40119	807	28	carefully	carefully	RB
40119	807	29	shut	shut	VBN
40119	807	30	off	off	RP
40119	807	31	.	.	.
40119	808	1	When	when	WRB
40119	808	2	the	the	DT
40119	808	3	disk	disk	NN
40119	808	4	is	be	VBZ
40119	808	5	turned	turn	VBN
40119	808	6	slowly	slowly	RB
40119	808	7	,	,	,
40119	808	8	the	the	DT
40119	808	9	spot	spot	NN
40119	808	10	of	of	IN
40119	808	11	light	light	NN
40119	808	12	upon	upon	IN
40119	808	13	the	the	DT
40119	808	14	screen	screen	NN
40119	808	15	goes	go	VBZ
40119	808	16	round	round	JJ
40119	808	17	and	and	CC
40119	808	18	round	round	JJ
40119	808	19	,	,	,
40119	808	20	and	and	CC
40119	808	21	it	-PRON-	PRP
40119	808	22	is	be	VBZ
40119	808	23	generally	generally	RB
40119	808	24	possible	possible	JJ
40119	808	25	to	to	TO
40119	808	26	see	see	VB
40119	808	27	at	at	IN
40119	808	28	once	once	RB
40119	808	29	that	that	IN
40119	808	30	the	the	DT
40119	808	31	bright	bright	JJ
40119	808	32	primary	primary	JJ
40119	808	33	spot	spot	NN
40119	808	34	appears	appear	VBZ
40119	808	35	to	to	TO
40119	808	36	be	be	VB
40119	808	37	followed	follow	VBN
40119	808	38	at	at	IN
40119	808	39	a	a	DT
40119	808	40	short	short	JJ
40119	808	41	distance	distance	NN
40119	808	42	by	by	IN
40119	808	43	a	a	DT
40119	808	44	much	much	RB
40119	808	45	feebler	feeble	JJR
40119	808	46	spot	spot	NN
40119	808	47	of	of	IN
40119	808	48	a	a	DT
40119	808	49	violet	violet	NN
40119	808	50	colour	colour	NN
40119	808	51	,	,	,
40119	808	52	which	which	WDT
40119	808	53	is	be	VBZ
40119	808	54	the	the	DT
40119	808	55	recurrent	recurrent	JJ
40119	808	56	image	image	NN
40119	808	57	of	of	IN
40119	808	58	the	the	DT
40119	808	59	first	first	JJ
40119	808	60	.	.	.
40119	809	1	(	(	-LRB-
40119	809	2	See	see	VB
40119	809	3	Fig	fig	NN
40119	809	4	.	.	.
40119	810	1	37	37	CD
40119	810	2	.	.	.
40119	810	3	)	)	-RRB-
40119	811	1	It	-PRON-	PRP
40119	811	2	is	be	VBZ
40119	811	3	essential	essential	JJ
40119	811	4	to	to	TO
40119	811	5	keep	keep	VB
40119	811	6	the	the	DT
40119	811	7	direction	direction	NN
40119	811	8	of	of	IN
40119	811	9	the	the	DT
40119	811	10	eyes	eye	NNS
40119	811	11	perfectly	perfectly	RB
40119	811	12	steady	steady	JJ
40119	811	13	,	,	,
40119	811	14	which	which	WDT
40119	811	15	is	be	VBZ
40119	811	16	not	not	RB
40119	811	17	a	a	DT
40119	811	18	very	very	RB
40119	811	19	easy	easy	JJ
40119	811	20	thing	thing	NN
40119	811	21	to	to	TO
40119	811	22	do	do	VB
40119	811	23	without	without	IN
40119	811	24	practice	practice	NN
40119	811	25	.	.	.
40119	812	1	If	if	IN
40119	812	2	a	a	DT
40119	812	3	green	green	JJ
40119	812	4	glass	glass	NN
40119	812	5	is	be	VBZ
40119	812	6	placed	place	VBN
40119	812	7	before	before	IN
40119	812	8	the	the	DT
40119	812	9	lens	lens	NN
40119	812	10	,	,	,
40119	812	11	the	the	DT
40119	812	12	ghost	ghost	NN
40119	812	13	will	will	MD
40119	812	14	be	be	VB
40119	812	15	at	at	IN
40119	812	16	its	-PRON-	PRP$
40119	812	17	best	good	JJS
40119	812	18	,	,	,
40119	812	19	and	and	CC
40119	812	20	should	should	MD
40119	812	21	be	be	VB
40119	812	22	seen	see	VBN
40119	812	23	quite	quite	RB
40119	812	24	clearly	clearly	RB
40119	812	25	and	and	CC
40119	812	26	easily	easily	RB
40119	812	27	,	,	,
40119	812	28	provided	provide	VBN
40119	812	29	that	that	IN
40119	812	30	no	no	DT
40119	812	31	attempt	attempt	NN
40119	812	32	is	be	VBZ
40119	812	33	made	make	VBN
40119	812	34	to	to	TO
40119	812	35	follow	follow	VB
40119	812	36	it	-PRON-	PRP
40119	812	37	with	with	IN
40119	812	38	the	the	DT
40119	812	39	eyes	eye	NNS
40119	812	40	.	.	.
40119	813	1	With	with	IN
40119	813	2	an	an	DT
40119	813	3	orange	orange	JJ
40119	813	4	glass	glass	NN
40119	813	5	the	the	DT
40119	813	6	ghost	ghost	NN
40119	813	7	becomes	become	VBZ
40119	813	8	less	less	RBR
40119	813	9	distinctly	distinctly	RB
40119	813	10	visible	visible	JJ
40119	813	11	,	,	,
40119	813	12	and	and	CC
40119	813	13	its	-PRON-	PRP$
40119	813	14	colour	colour	NN
40119	813	15	generally	generally	RB
40119	813	16	appears	appear	VBZ
40119	813	17	to	to	TO
40119	813	18	be	be	VB
40119	813	19	greenish	greenish	NN
40119	813	20	-	-	HYPH
40119	813	21	blue	blue	JJ
40119	813	22	,	,	,
40119	813	23	instead	instead	RB
40119	813	24	of	of	IN
40119	813	25	violet	violet	NN
40119	813	26	as	as	IN
40119	813	27	before	before	RB
40119	813	28	.	.	.
40119	814	1	When	when	WRB
40119	814	2	a	a	DT
40119	814	3	red	red	JJ
40119	814	4	glass	glass	NN
40119	814	5	is	be	VBZ
40119	814	6	substituted	substitute	VBN
40119	814	7	,	,	,
40119	814	8	the	the	DT
40119	814	9	ghost	ghost	NN
40119	814	10	completely	completely	RB
40119	814	11	disappears	disappear	VBZ
40119	814	12	.	.	.
40119	815	1	If	if	IN
40119	815	2	the	the	DT
40119	815	3	speed	speed	NN
40119	815	4	of	of	IN
40119	815	5	rotation	rotation	NN
40119	815	6	is	be	VBZ
40119	815	7	sufficiently	sufficiently	RB
40119	815	8	high	high	JJ
40119	815	9	,	,	,
40119	815	10	the	the	DT
40119	815	11	red	red	JJ
40119	815	12	spot	spot	NN
40119	815	13	is	be	VBZ
40119	815	14	considerably	considerably	RB
40119	815	15	elongated	elongate	VBN
40119	815	16	during	during	IN
40119	815	17	its	-PRON-	PRP$
40119	815	18	revolution	revolution	NN
40119	815	19	,	,	,
40119	815	20	and	and	CC
40119	815	21	its	-PRON-	PRP$
40119	815	22	colour	colour	NN
40119	815	23	ceases	cease	VBZ
40119	815	24	to	to	TO
40119	815	25	be	be	VB
40119	815	26	uniform	uniform	JJ
40119	815	27	,	,	,
40119	815	28	the	the	DT
40119	815	29	tail	tail	NN
40119	815	30	assuming	assume	VBG
40119	815	31	a	a	DT
40119	815	32	light	light	JJ
40119	815	33	bluish	bluish	JJ
40119	815	34	-	-	HYPH
40119	815	35	pink	pink	JJ
40119	815	36	tint	tint	NN
40119	815	37	.	.	.
40119	816	1	But	but	CC
40119	816	2	however	however	RB
40119	816	3	great	great	JJ
40119	816	4	the	the	DT
40119	816	5	speed	speed	NN
40119	816	6	,	,	,
40119	816	7	no	no	DT
40119	816	8	complete	complete	JJ
40119	816	9	separation	separation	NN
40119	816	10	of	of	IN
40119	816	11	the	the	DT
40119	816	12	spot	spot	NN
40119	816	13	into	into	IN
40119	816	14	red	red	JJ
40119	816	15	and	and	CC
40119	816	16	pink	pink	JJ
40119	816	17	portions	portion	NNS
40119	816	18	can	can	MD
40119	816	19	be	be	VB
40119	816	20	effected	effect	VBN
40119	816	21	,	,	,
40119	816	22	and	and	CC
40119	816	23	no	no	DT
40119	816	24	recurrent	recurrent	JJ
40119	816	25	image	image	NN
40119	816	26	is	be	VBZ
40119	816	27	ever	ever	RB
40119	816	28	found	find	VBN
40119	816	29	.	.	.
40119	817	1	The	the	DT
40119	817	2	spectrum	spectrum	NN
40119	817	3	method	method	NN
40119	817	4	of	of	IN
40119	817	5	observation	observation	NN
40119	817	6	can	can	MD
40119	817	7	only	only	RB
40119	817	8	be	be	VB
40119	817	9	carried	carry	VBN
40119	817	10	out	out	RP
40119	817	11	on	on	IN
40119	817	12	a	a	DT
40119	817	13	small	small	JJ
40119	817	14	scale	scale	NN
40119	817	15	,	,	,
40119	817	16	and	and	CC
40119	817	17	is	be	VBZ
40119	817	18	not	not	RB
40119	817	19	suited	suit	VBN
40119	817	20	for	for	IN
40119	817	21	exhibition	exhibition	NN
40119	817	22	to	to	IN
40119	817	23	an	an	DT
40119	817	24	audience	audience	NN
40119	817	25	.	.	.
40119	818	1	It	-PRON-	PRP
40119	818	2	,	,	,
40119	818	3	however	however	RB
40119	818	4	,	,	,
40119	818	5	affords	afford	VBZ
40119	818	6	the	the	DT
40119	818	7	best	good	JJS
40119	818	8	means	mean	NNS
40119	818	9	of	of	IN
40119	818	10	ascertaining	ascertaining	NN
40119	818	11	how	how	WRB
40119	818	12	far	far	RB
40119	818	13	the	the	DT
40119	818	14	apparent	apparent	JJ
40119	818	15	colour	colour	NN
40119	818	16	of	of	IN
40119	818	17	the	the	DT
40119	818	18	recurrent	recurrent	JJ
40119	818	19	image	image	NN
40119	818	20	depends	depend	VBZ
40119	818	21	upon	upon	IN
40119	818	22	that	that	DT
40119	818	23	of	of	IN
40119	818	24	the	the	DT
40119	818	25	primary	primary	NN
40119	818	26	,	,	,
40119	818	27	a	a	DT
40119	818	28	matter	matter	NN
40119	818	29	of	of	IN
40119	818	30	some	some	DT
40119	818	31	theoretical	theoretical	JJ
40119	818	32	interest	interest	NN
40119	818	33	.	.	.
40119	819	1	[	[	-LRB-
40119	819	2	Illustration	illustration	NN
40119	819	3	:	:	:
40119	819	4	_	_	NNP
40119	819	5	Fig	Fig	NNP
40119	819	6	.	.	.
40119	820	1	38.--Recurrent	38.--recurrent	CD
40119	820	2	Vision	Vision	NNP
40119	820	3	with	with	IN
40119	820	4	Spectrum	Spectrum	NNP
40119	820	5	.	.	.
40119	820	6	_	_	NNP
40119	820	7	]	]	-RRB-
40119	820	8	The	the	DT
40119	820	9	arrangement	arrangement	NN
40119	820	10	adopted	adopt	VBN
40119	820	11	is	be	VBZ
40119	820	12	shown	show	VBN
40119	820	13	in	in	IN
40119	820	14	the	the	DT
40119	820	15	annexed	annex	VBN
40119	820	16	diagram	diagram	NN
40119	820	17	(	(	-LRB-
40119	820	18	Fig	fig	NN
40119	820	19	.	.	.
40119	821	1	38	38	CD
40119	821	2	)	)	-RRB-
40119	821	3	.	.	.
40119	822	1	L	l	NN
40119	822	2	is	be	VBZ
40119	822	3	a	a	DT
40119	822	4	lantern	lantern	NN
40119	822	5	containing	contain	VBG
40119	822	6	an	an	DT
40119	822	7	oxyhydrogen	oxyhydrogen	NN
40119	822	8	light	light	NN
40119	822	9	or	or	CC
40119	822	10	an	an	DT
40119	822	11	electric	electric	JJ
40119	822	12	arc	arc	NN
40119	822	13	lamp	lamp	NN
40119	822	14	,	,	,
40119	822	15	S	S	NNP
40119	822	16	is	be	VBZ
40119	822	17	an	an	DT
40119	822	18	adjustable	adjustable	JJ
40119	822	19	slit	slit	NN
40119	822	20	,	,	,
40119	822	21	M	M	NNP
40119	822	22	a	a	DT
40119	822	23	projection	projection	NN
40119	822	24	lens	lens	NN
40119	822	25	,	,	,
40119	822	26	P	p	NN
40119	822	27	a	a	DT
40119	822	28	bisulphide	bisulphide	NN
40119	822	29	of	of	IN
40119	822	30	carbon	carbon	NN
40119	822	31	prism	prism	NN
40119	822	32	,	,	,
40119	822	33	D	d	NN
40119	822	34	a	a	DT
40119	822	35	metal	metal	NN
40119	822	36	plate	plate	NN
40119	822	37	in	in	IN
40119	822	38	the	the	DT
40119	822	39	middle	middle	NN
40119	822	40	of	of	IN
40119	822	41	which	which	WDT
40119	822	42	is	be	VBZ
40119	822	43	a	a	DT
40119	822	44	circular	circular	JJ
40119	822	45	aperture	aperture	NN
40119	822	46	2	2	CD
40119	822	47	millimetres	millimetre	NNS
40119	822	48	(	(	-LRB-
40119	822	49	1/12	1/12	CD
40119	822	50	inch	inch	NN
40119	822	51	)	)	-RRB-
40119	822	52	in	in	IN
40119	822	53	diameter	diameter	NN
40119	822	54	.	.	.
40119	823	1	A	a	DT
40119	823	2	bright	bright	JJ
40119	823	3	spectrum	spectrum	NN
40119	823	4	,	,	,
40119	823	5	6	6	CD
40119	823	6	or	or	CC
40119	823	7	7	7	CD
40119	823	8	centimetres	centimetre	NNS
40119	823	9	in	in	IN
40119	823	10	length	length	NN
40119	823	11	(	(	-LRB-
40119	823	12	about	about	RB
40119	823	13	3	3	CD
40119	823	14	inches	inch	NNS
40119	823	15	)	)	-RRB-
40119	823	16	,	,	,
40119	823	17	is	be	VBZ
40119	823	18	projected	project	VBN
40119	823	19	upon	upon	IN
40119	823	20	this	this	DT
40119	823	21	metal	metal	NN
40119	823	22	plate	plate	NN
40119	823	23	,	,	,
40119	823	24	and	and	CC
40119	823	25	a	a	DT
40119	823	26	small	small	JJ
40119	823	27	selected	select	VBN
40119	823	28	portion	portion	NN
40119	823	29	of	of	IN
40119	823	30	it	-PRON-	PRP
40119	823	31	passes	pass	VBZ
40119	823	32	through	through	IN
40119	823	33	the	the	DT
40119	823	34	round	round	JJ
40119	823	35	hole	hole	NN
40119	823	36	;	;	:
40119	823	37	thence	thence	VB
40119	823	38	the	the	DT
40119	823	39	coloured	coloured	JJ
40119	823	40	light	light	NN
40119	823	41	goes	go	VBZ
40119	823	42	through	through	IN
40119	823	43	the	the	DT
40119	823	44	lens	lens	NN
40119	823	45	N	n	CD
40119	823	46	to	to	IN
40119	823	47	the	the	DT
40119	823	48	little	little	JJ
40119	823	49	mirror	mirror	NN
40119	823	50	Q	Q	NNP
40119	823	51	,	,	,
40119	823	52	which	which	WDT
40119	823	53	reflects	reflect	VBZ
40119	823	54	it	-PRON-	PRP
40119	823	55	upon	upon	IN
40119	823	56	the	the	DT
40119	823	57	white	white	JJ
40119	823	58	screen	screen	NN
40119	823	59	R.	R.	NNP
40119	823	60	By	By	NNP
40119	823	61	properly	properly	RB
40119	823	62	adjusting	adjust	VBG
40119	823	63	the	the	DT
40119	823	64	position	position	NN
40119	823	65	of	of	IN
40119	823	66	the	the	DT
40119	823	67	lens	lens	NN
40119	823	68	N	n	CC
40119	823	69	a	a	DT
40119	823	70	sharp	sharp	JJ
40119	823	71	monochromatic	monochromatic	JJ
40119	823	72	image	image	NN
40119	823	73	of	of	IN
40119	823	74	the	the	DT
40119	823	75	round	round	JJ
40119	823	76	hole	hole	NN
40119	823	77	in	in	IN
40119	823	78	the	the	DT
40119	823	79	plate	plate	NN
40119	823	80	D	d	NN
40119	823	81	is	be	VBZ
40119	823	82	focussed	focusse	VBN
40119	823	83	upon	upon	IN
40119	823	84	the	the	DT
40119	823	85	screen	screen	NN
40119	823	86	R.	R.	NNP
40119	823	87	To	to	IN
40119	823	88	the	the	DT
40119	823	89	back	back	NN
40119	823	90	of	of	IN
40119	823	91	the	the	DT
40119	823	92	mirror	mirror	NN
40119	823	93	Q	Q	NNP
40119	823	94	is	be	VBZ
40119	823	95	attached	attach	VBN
40119	823	96	a	a	DT
40119	823	97	horizontal	horizontal	JJ
40119	823	98	arm	arm	NN
40119	823	99	which	which	WDT
40119	823	100	is	be	VBZ
40119	823	101	not	not	RB
40119	823	102	quite	quite	RB
40119	823	103	perpendicular	perpendicular	JJ
40119	823	104	to	to	IN
40119	823	105	the	the	DT
40119	823	106	mirror	mirror	NN
40119	823	107	,	,	,
40119	823	108	its	-PRON-	PRP$
40119	823	109	inclination	inclination	NN
40119	823	110	being	be	VBG
40119	823	111	capable	capable	JJ
40119	823	112	of	of	IN
40119	823	113	adjustment	adjustment	NN
40119	823	114	.	.	.
40119	824	1	The	the	DT
40119	824	2	arm	arm	NN
40119	824	3	is	be	VBZ
40119	824	4	turned	turn	VBN
40119	824	5	slowly	slowly	RB
40119	824	6	by	by	IN
40119	824	7	clock	clock	NN
40119	824	8	-	-	HYPH
40119	824	9	work	work	NN
40119	824	10	,	,	,
40119	824	11	thus	thus	RB
40119	824	12	causing	cause	VBG
40119	824	13	the	the	DT
40119	824	14	coloured	colour	VBN
40119	824	15	spot	spot	NN
40119	824	16	on	on	IN
40119	824	17	the	the	DT
40119	824	18	screen	screen	NN
40119	824	19	to	to	TO
40119	824	20	revolve	revolve	VB
40119	824	21	in	in	IN
40119	824	22	a	a	DT
40119	824	23	circular	circular	JJ
40119	824	24	orbit	orbit	NN
40119	824	25	about	about	RB
40119	824	26	30	30	CD
40119	824	27	centimetres	centimetre	NNS
40119	824	28	(	(	-LRB-
40119	824	29	1	1	CD
40119	824	30	foot	foot	NN
40119	824	31	)	)	-RRB-
40119	824	32	in	in	IN
40119	824	33	diameter	diameter	NN
40119	824	34	,	,	,
40119	824	35	its	-PRON-	PRP$
40119	824	36	recurrent	recurrent	JJ
40119	824	37	image	image	NN
40119	824	38	following	follow	VBG
40119	824	39	at	at	IN
40119	824	40	a	a	DT
40119	824	41	short	short	JJ
40119	824	42	distance	distance	NN
40119	824	43	behind	behind	IN
40119	824	44	it	-PRON-	PRP
40119	824	45	.	.	.
40119	825	1	When	when	WRB
40119	825	2	the	the	DT
40119	825	3	mirror	mirror	NN
40119	825	4	turns	turn	VBZ
40119	825	5	once	once	RB
40119	825	6	in	in	IN
40119	825	7	1	1	CD
40119	825	8	-	-	SYM
40119	825	9	1/2	1/2	CD
40119	825	10	seconds	second	NNS
40119	825	11	,	,	,
40119	825	12	this	this	DT
40119	825	13	image	image	NN
40119	825	14	appears	appear	VBZ
40119	825	15	about	about	RB
40119	825	16	50	50	CD
40119	825	17	°	°	NNS
40119	825	18	behind	behind	IN
40119	825	19	the	the	DT
40119	825	20	coloured	colour	VBN
40119	825	21	spot	spot	NN
40119	825	22	,	,	,
40119	825	23	the	the	DT
40119	825	24	corresponding	corresponding	JJ
40119	825	25	time	time	NN
40119	825	26	-	-	HYPH
40119	825	27	interval	interval	NN
40119	825	28	being	be	VBG
40119	825	29	about	about	RB
40119	825	30	one	one	CD
40119	825	31	-	-	HYPH
40119	825	32	fifth	fifth	NN
40119	825	33	of	of	IN
40119	825	34	a	a	DT
40119	825	35	second	second	NN
40119	825	36	.	.	.
40119	826	1	Using	use	VBG
40119	826	2	this	this	DT
40119	826	3	apparatus	apparatus	NN
40119	826	4	,	,	,
40119	826	5	it	-PRON-	PRP
40119	826	6	was	be	VBD
40119	826	7	found	find	VBN
40119	826	8	that	that	IN
40119	826	9	white	white	JJ
40119	826	10	light	light	NN
40119	826	11	was	be	VBD
40119	826	12	followed	follow	VBN
40119	826	13	by	by	IN
40119	826	14	a	a	DT
40119	826	15	violet	violet	NN
40119	826	16	recurrent	recurrent	JJ
40119	826	17	image	image	NN
40119	826	18	;	;	:
40119	826	19	after	after	IN
40119	826	20	blue	blue	JJ
40119	826	21	and	and	CC
40119	826	22	green	green	JJ
40119	826	23	,	,	,
40119	826	24	when	when	WRB
40119	826	25	the	the	DT
40119	826	26	image	image	NN
40119	826	27	was	be	VBD
40119	826	28	brightest	bright	JJS
40119	826	29	,	,	,
40119	826	30	its	-PRON-	PRP$
40119	826	31	colour	colour	NN
40119	826	32	was	be	VBD
40119	826	33	also	also	RB
40119	826	34	violet	violet	NN
40119	826	35	;	;	:
40119	826	36	after	after	IN
40119	826	37	yellow	yellow	NN
40119	826	38	and	and	CC
40119	826	39	orange	orange	VBP
40119	826	40	it	-PRON-	PRP
40119	826	41	appeared	appear	VBD
40119	826	42	blue	blue	JJ
40119	826	43	or	or	CC
40119	826	44	greenish	greenish	JJ
40119	826	45	blue	blue	JJ
40119	826	46	.	.	.
40119	827	1	On	on	IN
40119	827	2	the	the	DT
40119	827	3	other	other	JJ
40119	827	4	hand	hand	NN
40119	827	5	,	,	,
40119	827	6	when	when	WRB
40119	827	7	a	a	DT
40119	827	8	complete	complete	JJ
40119	827	9	spectrum	spectrum	NN
40119	827	10	was	be	VBD
40119	827	11	caused	cause	VBN
40119	827	12	to	to	TO
40119	827	13	revolve	revolve	VB
40119	827	14	upon	upon	IN
40119	827	15	the	the	DT
40119	827	16	screen	screen	NN
40119	827	17	,	,	,
40119	827	18	the	the	DT
40119	827	19	whole	whole	NN
40119	827	20	of	of	IN
40119	827	21	its	-PRON-	PRP$
40119	827	22	recurrent	recurrent	JJ
40119	827	23	image	image	NN
40119	827	24	from	from	IN
40119	827	25	end	end	NN
40119	827	26	to	to	IN
40119	827	27	end	end	NN
40119	827	28	appeared	appear	VBN
40119	827	29	violet	violet	NN
40119	827	30	;	;	:
40119	827	31	there	there	EX
40119	827	32	was	be	VBD
40119	827	33	no	no	DT
40119	827	34	suspicion	suspicion	NN
40119	827	35	of	of	IN
40119	827	36	blue	blue	JJ
40119	827	37	or	or	CC
40119	827	38	greenish	greenish	NN
40119	827	39	-	-	HYPH
40119	827	40	blue	blue	JJ
40119	827	41	at	at	IN
40119	827	42	the	the	DT
40119	827	43	less	less	JJR
40119	827	44	refrangible	refrangible	JJ
40119	827	45	end	end	NN
40119	827	46	.	.	.
40119	828	1	For	for	IN
40119	828	2	this	this	DT
40119	828	3	and	and	CC
40119	828	4	other	other	JJ
40119	828	5	reasons	reason	NNS
40119	828	6	given	give	VBN
40119	828	7	in	in	IN
40119	828	8	the	the	DT
40119	828	9	paper	paper	NN
40119	828	10	it	-PRON-	PRP
40119	828	11	was	be	VBD
40119	828	12	concluded	conclude	VBN
40119	828	13	that	that	IN
40119	828	14	the	the	DT
40119	828	15	true	true	JJ
40119	828	16	colour	colour	NN
40119	828	17	was	be	VBD
40119	828	18	in	in	IN
40119	828	19	all	all	DT
40119	828	20	cases	case	NNS
40119	828	21	really	really	RB
40119	828	22	violet	violet	NN
40119	828	23	,	,	,
40119	828	24	the	the	DT
40119	828	25	blue	blue	JJ
40119	828	26	and	and	CC
40119	828	27	greenish	greenish	NN
40119	828	28	-	-	HYPH
40119	828	29	blue	blue	JJ
40119	828	30	apparently	apparently	RB
40119	828	31	seen	see	VBN
40119	828	32	in	in	IN
40119	828	33	conjunction	conjunction	NN
40119	828	34	with	with	IN
40119	828	35	the	the	DT
40119	828	36	much	much	RB
40119	828	37	brighter	bright	JJR
40119	828	38	yellow	yellow	NN
40119	828	39	and	and	CC
40119	828	40	orange	orange	NN
40119	828	41	of	of	IN
40119	828	42	the	the	DT
40119	828	43	primary	primary	JJ
40119	828	44	being	be	VBG
40119	828	45	merely	merely	RB
40119	828	46	an	an	DT
40119	828	47	illusory	illusory	JJ
40119	828	48	effect	effect	NN
40119	828	49	of	of	IN
40119	828	50	contrast	contrast	NN
40119	828	51	.	.	.
40119	829	1	It	-PRON-	PRP
40119	829	2	seems	seem	VBZ
40119	829	3	likely	likely	JJ
40119	829	4	,	,	,
40119	829	5	then	then	RB
40119	829	6	,	,	,
40119	829	7	that	that	IN
40119	829	8	the	the	DT
40119	829	9	phenomenon	phenomenon	NN
40119	829	10	which	which	WDT
40119	829	11	has	have	VBZ
40119	829	12	been	be	VBN
40119	829	13	spoken	speak	VBN
40119	829	14	of	of	IN
40119	829	15	as	as	IN
40119	829	16	recurrent	recurrent	JJ
40119	829	17	vision	vision	NN
40119	829	18	,	,	,
40119	829	19	is	be	VBZ
40119	829	20	due	due	JJ
40119	829	21	principally	principally	RB
40119	829	22	,	,	,
40119	829	23	if	if	IN
40119	829	24	not	not	RB
40119	829	25	entirely	entirely	RB
40119	829	26	,	,	,
40119	829	27	to	to	IN
40119	829	28	an	an	DT
40119	829	29	action	action	NN
40119	829	30	of	of	IN
40119	829	31	the	the	DT
40119	829	32	violet	violet	NN
40119	829	33	nerve	nerve	NN
40119	829	34	-	-	HYPH
40119	829	35	fibres	fibre	NNS
40119	829	36	.	.	.
40119	830	1	Recurrent	recurrent	JJ
40119	830	2	vision	vision	NN
40119	830	3	is	be	VBZ
40119	830	4	,	,	,
40119	830	5	no	no	RB
40119	830	6	doubt	doubt	RB
40119	830	7	,	,	,
40119	830	8	generally	generally	RB
40119	830	9	most	most	RBS
40119	830	10	conspicuous	conspicuous	JJ
40119	830	11	after	after	IN
40119	830	12	a	a	DT
40119	830	13	very	very	RB
40119	830	14	brief	brief	JJ
40119	830	15	period	period	NN
40119	830	16	of	of	IN
40119	830	17	retinal	retinal	JJ
40119	830	18	illumination	illumination	NN
40119	830	19	,	,	,
40119	830	20	such	such	JJ
40119	830	21	as	as	IN
40119	830	22	was	be	VBD
40119	830	23	employed	employ	VBN
40119	830	24	in	in	IN
40119	830	25	the	the	DT
40119	830	26	experiments	experiment	NNS
40119	830	27	which	which	WDT
40119	830	28	we	-PRON-	PRP
40119	830	29	have	have	VBP
40119	830	30	been	be	VBN
40119	830	31	discussing	discuss	VBG
40119	830	32	;	;	:
40119	830	33	this	this	DT
40119	830	34	is	be	VBZ
40119	830	35	evidently	evidently	RB
40119	830	36	due	due	JJ
40119	830	37	to	to	IN
40119	830	38	the	the	DT
40119	830	39	fact	fact	NN
40119	830	40	that	that	IN
40119	830	41	the	the	DT
40119	830	42	effect	effect	NN
40119	830	43	is	be	VBZ
40119	830	44	most	most	RBS
40119	830	45	easily	easily	RB
40119	830	46	perceived	perceive	VBN
40119	830	47	when	when	WRB
40119	830	48	the	the	DT
40119	830	49	sensibility	sensibility	NN
40119	830	50	of	of	IN
40119	830	51	the	the	DT
40119	830	52	retina	retina	NNP
40119	830	53	has	have	VBZ
40119	830	54	not	not	RB
40119	830	55	been	be	VBN
40119	830	56	impaired	impair	VBN
40119	830	57	by	by	IN
40119	830	58	fatigue	fatigue	NN
40119	830	59	.	.	.
40119	831	1	But	but	CC
40119	831	2	by	by	IN
40119	831	3	a	a	DT
40119	831	4	little	little	JJ
40119	831	5	effort	effort	NN
40119	831	6	it	-PRON-	PRP
40119	831	7	may	may	MD
40119	831	8	be	be	VB
40119	831	9	detected	detect	VBN
40119	831	10	even	even	RB
40119	831	11	after	after	IN
40119	831	12	very	very	RB
40119	831	13	prolonged	prolonged	JJ
40119	831	14	illumination	illumination	NN
40119	831	15	,	,	,
40119	831	16	and	and	CC
40119	831	17	a	a	DT
40119	831	18	practised	practise	VBN
40119	831	19	observer	observer	NN
40119	831	20	can	can	MD
40119	831	21	hardly	hardly	RB
40119	831	22	avoid	avoid	VB
40119	831	23	noticing	notice	VBG
40119	831	24	a	a	DT
40119	831	25	short	short	JJ
40119	831	26	flash	flash	NN
40119	831	27	of	of	IN
40119	831	28	bluish	bluish	JJ
40119	831	29	light	light	NN
40119	831	30	which	which	WDT
40119	831	31	manifests	manifest	VBZ
40119	831	32	itself	-PRON-	PRP
40119	831	33	about	about	IN
40119	831	34	a	a	DT
40119	831	35	quarter	quarter	NN
40119	831	36	of	of	IN
40119	831	37	a	a	DT
40119	831	38	second	second	JJ
40119	831	39	after	after	IN
40119	831	40	the	the	DT
40119	831	41	lights	light	NNS
40119	831	42	in	in	IN
40119	831	43	a	a	DT
40119	831	44	room	room	NN
40119	831	45	have	have	VBP
40119	831	46	been	be	VBN
40119	831	47	suddenly	suddenly	RB
40119	831	48	extinguished	extinguish	VBN
40119	831	49	;	;	:
40119	831	50	the	the	DT
40119	831	51	phenomenon	phenomenon	NN
40119	831	52	forces	force	VBZ
40119	831	53	itself	-PRON-	PRP
40119	831	54	upon	upon	IN
40119	831	55	my	-PRON-	PRP$
40119	831	56	attention	attention	NN
40119	831	57	almost	almost	RB
40119	831	58	every	every	DT
40119	831	59	night	night	NN
40119	831	60	when	when	WRB
40119	831	61	I	-PRON-	PRP
40119	831	62	turn	turn	VBP
40119	831	63	off	off	RP
40119	831	64	the	the	DT
40119	831	65	electric	electric	JJ
40119	831	66	lights	light	NNS
40119	831	67	.	.	.
40119	832	1	It	-PRON-	PRP
40119	832	2	need	nee	MD
40119	832	3	hardly	hardly	RB
40119	832	4	be	be	VB
40119	832	5	pointed	point	VBN
40119	832	6	out	out	RP
40119	832	7	that	that	IN
40119	832	8	it	-PRON-	PRP
40119	832	9	represents	represent	VBZ
40119	832	10	only	only	RB
40119	832	11	a	a	DT
40119	832	12	transient	transient	JJ
40119	832	13	phase	phase	NN
40119	832	14	of	of	IN
40119	832	15	the	the	DT
40119	832	16	well	well	RB
40119	832	17	known	know	VBN
40119	832	18	positive	positive	JJ
40119	832	19	after	after	IN
40119	832	20	-	-	HYPH
40119	832	21	image	image	NN
40119	832	22	,	,	,
40119	832	23	and	and	CC
40119	832	24	it	-PRON-	PRP
40119	832	25	had	have	VBD
40119	832	26	even	even	RB
40119	832	27	been	be	VBN
40119	832	28	observed	observe	VBN
40119	832	29	in	in	IN
40119	832	30	a	a	DT
40119	832	31	vague	vague	JJ
40119	832	32	and	and	CC
40119	832	33	uncertain	uncertain	JJ
40119	832	34	sort	sort	NN
40119	832	35	of	of	IN
40119	832	36	way	way	NN
40119	832	37	long	long	RB
40119	832	38	before	before	IN
40119	832	39	the	the	DT
40119	832	40	date	date	NN
40119	832	41	of	of	IN
40119	832	42	Professor	Professor	NNP
40119	832	43	Young	Young	NNP
40119	832	44	's	's	POS
40119	832	45	experiment	experiment	NN
40119	832	46	.	.	.
40119	833	1	Helmholtz	Helmholtz	NNP
40119	833	2	,	,	,
40119	833	3	for	for	IN
40119	833	4	example	example	NN
40119	833	5	,	,	,
40119	833	6	mentions	mention	VBZ
40119	833	7	the	the	DT
40119	833	8	case	case	NN
40119	833	9	of	of	IN
40119	833	10	a	a	DT
40119	833	11	positive	positive	JJ
40119	833	12	after	after	IN
40119	833	13	-	-	HYPH
40119	833	14	image	image	NN
40119	833	15	which	which	WDT
40119	833	16	seemed	seem	VBD
40119	833	17	to	to	TO
40119	833	18	disappear	disappear	VB
40119	833	19	and	and	CC
40119	833	20	then	then	RB
40119	833	21	to	to	TO
40119	833	22	brighten	brighten	VB
40119	833	23	up	up	RP
40119	833	24	again	again	RB
40119	833	25	,	,	,
40119	833	26	but	but	CC
40119	833	27	he	-PRON-	PRP
40119	833	28	goes	go	VBZ
40119	833	29	on	on	RP
40119	833	30	to	to	TO
40119	833	31	explain	explain	VB
40119	833	32	--	--	:
40119	833	33	erroneously	erroneously	RB
40119	833	34	,	,	,
40119	833	35	as	as	IN
40119	833	36	it	-PRON-	PRP
40119	833	37	turns	turn	VBZ
40119	833	38	out	out	RP
40119	833	39	--	--	:
40119	833	40	that	that	IN
40119	833	41	the	the	DT
40119	833	42	seeming	seeming	JJ
40119	833	43	disappearance	disappearance	NN
40119	833	44	was	be	VBD
40119	833	45	illusory	illusory	JJ
40119	833	46	.	.	.
40119	834	1	M.	M.	NNP
40119	834	2	Charpentier	Charpentier	NNP
40119	834	3	,	,	,
40119	834	4	of	of	IN
40119	834	5	Nancy	Nancy	NNP
40119	834	6	,	,	,
40119	834	7	whose	whose	WP$
40119	834	8	work	work	NN
40119	834	9	in	in	IN
40119	834	10	physiological	physiological	JJ
40119	834	11	optics	optic	NNS
40119	834	12	is	be	VBZ
40119	834	13	well	well	RB
40119	834	14	known	know	VBN
40119	834	15	,	,	,
40119	834	16	was	be	VBD
40119	834	17	the	the	DT
40119	834	18	first	first	JJ
40119	834	19	to	to	TO
40119	834	20	notice	notice	VB
40119	834	21	and	and	CC
40119	834	22	record	record	VB
40119	834	23	a	a	DT
40119	834	24	remarkable	remarkable	JJ
40119	834	25	phenomenon	phenomenon	NN
40119	834	26	which	which	WDT
40119	834	27	,	,	,
40119	834	28	in	in	IN
40119	834	29	some	some	DT
40119	834	30	form	form	NN
40119	834	31	or	or	CC
40119	834	32	other	other	JJ
40119	834	33	,	,	,
40119	834	34	must	must	MD
40119	834	35	present	present	VB
40119	834	36	itself	-PRON-	PRP
40119	834	37	many	many	JJ
40119	834	38	times	time	NNS
40119	834	39	daily	daily	RB
40119	834	40	to	to	IN
40119	834	41	every	every	DT
40119	834	42	person	person	NN
40119	834	43	who	who	WP
40119	834	44	is	be	VBZ
40119	834	45	not	not	RB
40119	834	46	blind	blind	JJ
40119	834	47	,	,	,
40119	834	48	but	but	CC
40119	834	49	which	which	WDT
40119	834	50	until	until	IN
40119	834	51	about	about	RB
40119	834	52	seven	seven	CD
40119	834	53	years	year	NNS
40119	834	54	ago	ago	RB
40119	834	55	had	have	VBD
40119	834	56	been	be	VBN
40119	834	57	absolutely	absolutely	RB
40119	834	58	and	and	CC
40119	834	59	universally	universally	RB
40119	834	60	ignored	ignore	VBN
40119	834	61	.	.	.
40119	835	1	The	the	DT
40119	835	2	law	law	NN
40119	835	3	which	which	WDT
40119	835	4	is	be	VBZ
40119	835	5	associated	associate	VBN
40119	835	6	with	with	IN
40119	835	7	Charpentier	Charpentier	NNP
40119	835	8	's	's	POS
40119	835	9	name	name	NN
40119	835	10	is	be	VBZ
40119	835	11	this:--When	this:--When	NNP
40119	835	12	darkness	darkness	NN
40119	835	13	is	be	VBZ
40119	835	14	succeeded	succeed	VBN
40119	835	15	by	by	IN
40119	835	16	light	light	NN
40119	835	17	,	,	,
40119	835	18	the	the	DT
40119	835	19	stimulus	stimulus	NN
40119	835	20	which	which	WDT
40119	835	21	the	the	DT
40119	835	22	retina	retina	NNP
40119	835	23	at	at	IN
40119	835	24	first	first	NNP
40119	835	25	receives	receive	NNS
40119	835	26	,	,	,
40119	835	27	and	and	CC
40119	835	28	which	which	WDT
40119	835	29	causes	cause	VBZ
40119	835	30	the	the	DT
40119	835	31	sensation	sensation	NN
40119	835	32	of	of	IN
40119	835	33	luminosity	luminosity	NN
40119	835	34	,	,	,
40119	835	35	is	be	VBZ
40119	835	36	followed	follow	VBN
40119	835	37	by	by	IN
40119	835	38	a	a	DT
40119	835	39	brief	brief	JJ
40119	835	40	period	period	NN
40119	835	41	of	of	IN
40119	835	42	insensibility	insensibility	NN
40119	835	43	,	,	,
40119	835	44	resulting	result	VBG
40119	835	45	in	in	IN
40119	835	46	the	the	DT
40119	835	47	sensation	sensation	NN
40119	835	48	of	of	IN
40119	835	49	momentary	momentary	JJ
40119	835	50	darkness	darkness	NN
40119	835	51	.	.	.
40119	836	1	It	-PRON-	PRP
40119	836	2	appears	appear	VBZ
40119	836	3	that	that	IN
40119	836	4	the	the	DT
40119	836	5	dark	dark	JJ
40119	836	6	period	period	NN
40119	836	7	begins	begin	VBZ
40119	836	8	about	about	RB
40119	836	9	one	one	CD
40119	836	10	sixtieth	sixtieth	NN
40119	836	11	of	of	IN
40119	836	12	a	a	DT
40119	836	13	second	second	JJ
40119	836	14	after	after	IN
40119	836	15	the	the	DT
40119	836	16	light	light	NN
40119	836	17	has	have	VBZ
40119	836	18	first	first	RB
40119	836	19	been	be	VBN
40119	836	20	admitted	admit	VBN
40119	836	21	to	to	IN
40119	836	22	the	the	DT
40119	836	23	eye	eye	NN
40119	836	24	,	,	,
40119	836	25	and	and	CC
40119	836	26	lasts	last	VBZ
40119	836	27	for	for	IN
40119	836	28	about	about	RB
40119	836	29	an	an	DT
40119	836	30	equal	equal	JJ
40119	836	31	time	time	NN
40119	836	32	.	.	.
40119	837	1	The	the	DT
40119	837	2	whole	whole	JJ
40119	837	3	alternation	alternation	NN
40119	837	4	from	from	IN
40119	837	5	light	light	NN
40119	837	6	to	to	IN
40119	837	7	darkness	darkness	NN
40119	837	8	and	and	CC
40119	837	9	back	back	RB
40119	837	10	again	again	RB
40119	837	11	to	to	IN
40119	837	12	light	light	NN
40119	837	13	is	be	VBZ
40119	837	14	performed	perform	VBN
40119	837	15	so	so	RB
40119	837	16	rapidly	rapidly	RB
40119	837	17	,	,	,
40119	837	18	that	that	IN
40119	837	19	except	except	IN
40119	837	20	under	under	IN
40119	837	21	certain	certain	JJ
40119	837	22	conditions	condition	NNS
40119	837	23	,	,	,
40119	837	24	which	which	WDT
40119	837	25	,	,	,
40119	837	26	however	however	RB
40119	837	27	,	,	,
40119	837	28	occur	occur	VBP
40119	837	29	frequently	frequently	RB
40119	837	30	enough	enough	RB
40119	837	31	,	,	,
40119	837	32	it	-PRON-	PRP
40119	837	33	can	can	MD
40119	837	34	not	not	RB
40119	837	35	be	be	VB
40119	837	36	detected	detect	VBN
40119	837	37	.	.	.
40119	838	1	[	[	-LRB-
40119	838	2	Illustration	illustration	NN
40119	838	3	:	:	:
40119	838	4	_	_	NNP
40119	838	5	Fig	Fig	NNP
40119	838	6	.	.	.
40119	839	1	39.--Charpentier	39.--Charpentier	NNP
40119	839	2	's	's	POS
40119	839	3	Dark	Dark	NNP
40119	839	4	Band	Band	NNP
40119	839	5	.	.	.
40119	839	6	_	_	NNP
40119	839	7	]	]	-RRB-
40119	839	8	The	the	DT
40119	839	9	apparatus	apparatus	NN
40119	839	10	which	which	WDT
40119	839	11	Charpentier	Charpentier	NNP
40119	839	12	employed	employ	VBN
40119	839	13	for	for	IN
40119	839	14	demonstrating	demonstrate	VBG
40119	839	15	and	and	CC
40119	839	16	measuring	measure	VBG
40119	839	17	the	the	DT
40119	839	18	duration	duration	NN
40119	839	19	of	of	IN
40119	839	20	this	this	DT
40119	839	21	effect	effect	NN
40119	839	22	is	be	VBZ
40119	839	23	very	very	RB
40119	839	24	simple	simple	JJ
40119	839	25	.	.	.
40119	840	1	It	-PRON-	PRP
40119	840	2	consists	consist	VBZ
40119	840	3	of	of	IN
40119	840	4	a	a	DT
40119	840	5	blackened	blacken	VBN
40119	840	6	disk	disk	NN
40119	840	7	with	with	IN
40119	840	8	a	a	DT
40119	840	9	white	white	JJ
40119	840	10	sector	sector	NN
40119	840	11	,	,	,
40119	840	12	mounted	mount	VBN
40119	840	13	upon	upon	IN
40119	840	14	an	an	DT
40119	840	15	axis	axis	NN
40119	840	16	.	.	.
40119	841	1	When	when	WRB
40119	841	2	the	the	DT
40119	841	3	disk	disk	NN
40119	841	4	is	be	VBZ
40119	841	5	illuminated	illuminate	VBN
40119	841	6	by	by	IN
40119	841	7	sunlight	sunlight	NN
40119	841	8	and	and	CC
40119	841	9	turned	turn	VBD
40119	841	10	rather	rather	RB
40119	841	11	slowly	slowly	RB
40119	841	12	,	,	,
40119	841	13	the	the	DT
40119	841	14	direction	direction	NN
40119	841	15	of	of	IN
40119	841	16	the	the	DT
40119	841	17	gaze	gaze	NN
40119	841	18	being	be	VBG
40119	841	19	fixed	fix	VBN
40119	841	20	upon	upon	IN
40119	841	21	the	the	DT
40119	841	22	centre	centre	NN
40119	841	23	,	,	,
40119	841	24	there	there	EX
40119	841	25	appears	appear	VBZ
40119	841	26	upon	upon	IN
40119	841	27	the	the	DT
40119	841	28	white	white	JJ
40119	841	29	sector	sector	NN
40119	841	30	,	,	,
40119	841	31	close	close	RB
40119	841	32	behind	behind	IN
40119	841	33	its	-PRON-	PRP$
40119	841	34	leading	leading	JJ
40119	841	35	edge	edge	NN
40119	841	36	,	,	,
40119	841	37	a	a	DT
40119	841	38	narrow	narrow	JJ
40119	841	39	but	but	CC
40119	841	40	quite	quite	RB
40119	841	41	conspicuous	conspicuous	JJ
40119	841	42	dark	dark	JJ
40119	841	43	band	band	NN
40119	841	44	.	.	.
40119	842	1	(	(	-LRB-
40119	842	2	See	see	VB
40119	842	3	Fig	fig	NN
40119	842	4	.	.	.
40119	843	1	39	39	CD
40119	843	2	.	.	.
40119	843	3	)	)	-RRB-
40119	844	1	The	the	DT
40119	844	2	portion	portion	NN
40119	844	3	of	of	IN
40119	844	4	the	the	DT
40119	844	5	retina	retina	NNP
40119	844	6	which	which	WDT
40119	844	7	at	at	IN
40119	844	8	any	any	DT
40119	844	9	moment	moment	NN
40119	844	10	is	be	VBZ
40119	844	11	apparently	apparently	RB
40119	844	12	occupied	occupy	VBN
40119	844	13	by	by	IN
40119	844	14	the	the	DT
40119	844	15	dark	dark	JJ
40119	844	16	band	band	NN
40119	844	17	,	,	,
40119	844	18	is	be	VBZ
40119	844	19	that	that	IN
40119	844	20	upon	upon	IN
40119	844	21	which	which	WDT
40119	844	22	the	the	DT
40119	844	23	light	light	NN
40119	844	24	reflected	reflect	VBN
40119	844	25	by	by	IN
40119	844	26	the	the	DT
40119	844	27	leading	lead	VBG
40119	844	28	edge	edge	NN
40119	844	29	of	of	IN
40119	844	30	the	the	DT
40119	844	31	white	white	JJ
40119	844	32	sector	sector	NN
40119	844	33	impinged	impinge	VBD
40119	844	34	one	one	CD
40119	844	35	sixtieth	sixtieth	NN
40119	844	36	of	of	IN
40119	844	37	a	a	DT
40119	844	38	second	second	JJ
40119	844	39	previously	previously	RB
40119	844	40	.	.	.
40119	845	1	But	but	CC
40119	845	2	no	no	DT
40119	845	3	special	special	JJ
40119	845	4	apparatus	apparatus	NN
40119	845	5	is	be	VBZ
40119	845	6	required	require	VBN
40119	845	7	to	to	TO
40119	845	8	show	show	VB
40119	845	9	the	the	DT
40119	845	10	dark	dark	JJ
40119	845	11	reaction	reaction	NN
40119	845	12	.	.	.
40119	846	1	In	in	IN
40119	846	2	Fig	Fig	NNP
40119	846	3	.	.	.
40119	847	1	40	40	CD
40119	847	2	an	an	DT
40119	847	3	attempt	attempt	NN
40119	847	4	has	have	VBZ
40119	847	5	been	be	VBN
40119	847	6	made	make	VBN
40119	847	7	to	to	TO
40119	847	8	illustrate	illustrate	VB
40119	847	9	what	what	WP
40119	847	10	any	any	DT
40119	847	11	one	one	NN
40119	847	12	may	may	MD
40119	847	13	see	see	VB
40119	847	14	if	if	IN
40119	847	15	he	-PRON-	PRP
40119	847	16	simply	simply	RB
40119	847	17	moves	move	VBZ
40119	847	18	his	-PRON-	PRP$
40119	847	19	hand	hand	NN
40119	847	20	between	between	IN
40119	847	21	his	-PRON-	PRP$
40119	847	22	eyes	eye	NNS
40119	847	23	and	and	CC
40119	847	24	the	the	DT
40119	847	25	sky	sky	NN
40119	847	26	or	or	CC
40119	847	27	any	any	DT
40119	847	28	strongly	strongly	RB
40119	847	29	illuminated	illuminate	VBN
40119	847	30	white	white	JJ
40119	847	31	surface	surface	NN
40119	847	32	.	.	.
40119	848	1	The	the	DT
40119	848	2	hand	hand	NN
40119	848	3	appears	appear	VBZ
40119	848	4	to	to	TO
40119	848	5	be	be	VB
40119	848	6	followed	follow	VBN
40119	848	7	by	by	IN
40119	848	8	a	a	DT
40119	848	9	dark	dark	JJ
40119	848	10	outline	outline	NN
40119	848	11	separated	separate	VBN
40119	848	12	from	from	IN
40119	848	13	it	-PRON-	PRP
40119	848	14	by	by	IN
40119	848	15	a	a	DT
40119	848	16	bright	bright	JJ
40119	848	17	interval	interval	NN
40119	848	18	.	.	.
40119	849	1	The	the	DT
40119	849	2	same	same	JJ
40119	849	3	kind	kind	NN
40119	849	4	of	of	IN
40119	849	5	thing	thing	NN
40119	849	6	happens	happen	VBZ
40119	849	7	,	,	,
40119	849	8	in	in	IN
40119	849	9	a	a	DT
40119	849	10	more	more	RBR
40119	849	11	or	or	CC
40119	849	12	less	less	RBR
40119	849	13	marked	mark	VBN
40119	849	14	degree	degree	NN
40119	849	15	,	,	,
40119	849	16	whenever	whenever	WRB
40119	849	17	a	a	DT
40119	849	18	dark	dark	JJ
40119	849	19	object	object	NN
40119	849	20	moves	move	VBZ
40119	849	21	across	across	IN
40119	849	22	a	a	DT
40119	849	23	bright	bright	JJ
40119	849	24	background	background	NN
40119	849	25	,	,	,
40119	849	26	or	or	CC
40119	849	27	a	a	DT
40119	849	28	bright	bright	JJ
40119	849	29	object	object	NN
40119	849	30	across	across	IN
40119	849	31	a	a	DT
40119	849	32	dark	dark	JJ
40119	849	33	background	background	NN
40119	849	34	.	.	.
40119	850	1	[	[	-LRB-
40119	850	2	Illustration	illustration	NN
40119	850	3	:	:	:
40119	850	4	_	_	NNP
40119	850	5	Fig	Fig	NNP
40119	850	6	.	.	.
40119	851	1	40.--Charpentier	40.--charpentier	LS
40119	851	2	's	's	POS
40119	851	3	Effect	effect	NN
40119	851	4	shown	show	VBN
40119	851	5	with	with	IN
40119	851	6	the	the	DT
40119	851	7	Hand	Hand	NNP
40119	851	8	.	.	.
40119	851	9	_	_	NNP
40119	851	10	]	]	-RRB-
40119	851	11	In	in	IN
40119	851	12	order	order	NN
40119	851	13	to	to	TO
40119	851	14	see	see	VB
40119	851	15	the	the	DT
40119	851	16	effect	effect	NN
40119	851	17	distinctly	distinctly	RB
40119	851	18	by	by	IN
40119	851	19	Charpentier	Charpentier	NNP
40119	851	20	's	's	POS
40119	851	21	original	original	JJ
40119	851	22	method	method	NN
40119	851	23	,	,	,
40119	851	24	the	the	DT
40119	851	25	illumination	illumination	NN
40119	851	26	must	must	MD
40119	851	27	be	be	VB
40119	851	28	strong	strong	JJ
40119	851	29	.	.	.
40119	852	1	If	if	IN
40119	852	2	,	,	,
40119	852	3	howover	howover	RB
40119	852	4	,	,	,
40119	852	5	the	the	DT
40119	852	6	arrangement	arrangement	NN
40119	852	7	is	be	VBZ
40119	852	8	slightly	slightly	RB
40119	852	9	varied	varied	JJ
40119	852	10	,	,	,
40119	852	11	so	so	IN
40119	852	12	that	that	IN
40119	852	13	transmitted	transmit	VBN
40119	852	14	instead	instead	RB
40119	852	15	of	of	IN
40119	852	16	reflected	reflect	VBN
40119	852	17	light	light	NN
40119	852	18	is	be	VBZ
40119	852	19	made	make	VBN
40119	852	20	use	use	NN
40119	852	21	of	of	IN
40119	852	22	,	,	,
40119	852	23	comparatively	comparatively	RB
40119	852	24	feeble	feeble	JJ
40119	852	25	illumination	illumination	NN
40119	852	26	is	be	VBZ
40119	852	27	sufficient	sufficient	JJ
40119	852	28	.	.	.
40119	853	1	A	a	DT
40119	853	2	very	very	RB
40119	853	3	effective	effective	JJ
40119	853	4	way	way	NN
40119	853	5	is	be	VBZ
40119	853	6	to	to	TO
40119	853	7	turn	turn	VB
40119	853	8	a	a	DT
40119	853	9	small	small	JJ
40119	853	10	metal	metal	NN
40119	853	11	disk	disk	NN
40119	853	12	,	,	,
40119	853	13	having	have	VBG
40119	853	14	an	an	DT
40119	853	15	open	open	JJ
40119	853	16	sector	sector	NN
40119	853	17	of	of	IN
40119	853	18	about	about	RB
40119	853	19	60	60	CD
40119	853	20	°	°	NNS
40119	853	21	,	,	,
40119	853	22	in	in	IN
40119	853	23	front	front	NN
40119	853	24	of	of	IN
40119	853	25	a	a	DT
40119	853	26	sheet	sheet	NN
40119	853	27	of	of	IN
40119	853	28	ground	ground	NN
40119	853	29	or	or	CC
40119	853	30	opal	opal	NN
40119	853	31	glass	glass	NN
40119	853	32	behind	behind	IN
40119	853	33	which	which	WDT
40119	853	34	is	be	VBZ
40119	853	35	a	a	DT
40119	853	36	lamp	lamp	NN
40119	853	37	.	.	.
40119	854	1	By	by	IN
40119	854	2	an	an	DT
40119	854	3	arrangement	arrangement	NN
40119	854	4	of	of	IN
40119	854	5	this	this	DT
40119	854	6	kind	kind	NN
40119	854	7	upon	upon	IN
40119	854	8	a	a	DT
40119	854	9	larger	large	JJR
40119	854	10	scale	scale	NN
40119	854	11	,	,	,
40119	854	12	the	the	DT
40119	854	13	effect	effect	NN
40119	854	14	may	may	MD
40119	854	15	easily	easily	RB
40119	854	16	be	be	VB
40119	854	17	rendered	render	VBN
40119	854	18	visible	visible	JJ
40119	854	19	to	to	IN
40119	854	20	an	an	DT
40119	854	21	audience	audience	NN
40119	854	22	.	.	.
40119	855	1	The	the	DT
40119	855	2	eyes	eye	NNS
40119	855	3	should	should	MD
40119	855	4	not	not	RB
40119	855	5	be	be	VB
40119	855	6	allowed	allow	VBN
40119	855	7	to	to	TO
40119	855	8	follow	follow	VB
40119	855	9	the	the	DT
40119	855	10	disk	disk	NN
40119	855	11	in	in	IN
40119	855	12	its	-PRON-	PRP$
40119	855	13	rotation	rotation	NN
40119	855	14	,	,	,
40119	855	15	but	but	CC
40119	855	16	should	should	MD
40119	855	17	be	be	VB
40119	855	18	directed	direct	VBN
40119	855	19	steadily	steadily	RB
40119	855	20	upon	upon	IN
40119	855	21	the	the	DT
40119	855	22	centre	centre	NN
40119	855	23	.	.	.
40119	856	1	The	the	DT
40119	856	2	acute	acute	NN
40119	856	3	and	and	CC
40119	856	4	educated	educate	VBN
40119	856	5	vision	vision	NN
40119	856	6	of	of	IN
40119	856	7	Charpentier	Charpentier	NNP
40119	856	8	enabled	enable	VBD
40119	856	9	him	-PRON-	PRP
40119	856	10	,	,	,
40119	856	11	even	even	RB
40119	856	12	when	when	WRB
40119	856	13	working	work	VBG
40119	856	14	with	with	IN
40119	856	15	his	-PRON-	PRP$
40119	856	16	black	black	JJ
40119	856	17	and	and	CC
40119	856	18	white	white	JJ
40119	856	19	disk	disk	NN
40119	856	20	,	,	,
40119	856	21	to	to	TO
40119	856	22	detect	detect	VB
40119	856	23	the	the	DT
40119	856	24	existence	existence	NN
40119	856	25	,	,	,
40119	856	26	under	under	IN
40119	856	27	favourable	favourable	JJ
40119	856	28	conditions	condition	NNS
40119	856	29	,	,	,
40119	856	30	of	of	IN
40119	856	31	a	a	DT
40119	856	32	second	second	JJ
40119	856	33	,	,	,
40119	856	34	and	and	CC
40119	856	35	sometimes	sometimes	RB
40119	856	36	a	a	DT
40119	856	37	third	third	JJ
40119	856	38	,	,	,
40119	856	39	band	band	NN
40119	856	40	of	of	IN
40119	856	41	greatly	greatly	RB
40119	856	42	diminished	diminished	JJ
40119	856	43	intensity	intensity	NN
40119	856	44	,	,	,
40119	856	45	though	though	IN
40119	856	46	he	-PRON-	PRP
40119	856	47	remarks	remark	VBZ
40119	856	48	that	that	IN
40119	856	49	the	the	DT
40119	856	50	observation	observation	NN
40119	856	51	is	be	VBZ
40119	856	52	a	a	DT
40119	856	53	very	very	RB
40119	856	54	difficult	difficult	JJ
40119	856	55	one	one	CD
40119	856	56	.	.	.
40119	857	1	What	what	WP
40119	857	2	is	be	VBZ
40119	857	3	probably	probably	RB
40119	857	4	the	the	DT
40119	857	5	same	same	JJ
40119	857	6	effect	effect	NN
40119	857	7	can	can	MD
40119	857	8	,	,	,
40119	857	9	however	however	RB
40119	857	10	,	,	,
40119	857	11	as	as	IN
40119	857	12	pointed	point	VBN
40119	857	13	out	out	RP
40119	857	14	in	in	IN
40119	857	15	my	-PRON-	PRP$
40119	857	16	paper	paper	NN
40119	857	17	of	of	IN
40119	857	18	1894	1894	CD
40119	857	19	,	,	,
40119	857	20	be	be	VB
40119	857	21	shown	show	VBN
40119	857	22	quite	quite	RB
40119	857	23	easily	easily	RB
40119	857	24	in	in	IN
40119	857	25	a	a	DT
40119	857	26	different	different	JJ
40119	857	27	manner	manner	NN
40119	857	28	.	.	.
40119	858	1	If	if	IN
40119	858	2	a	a	DT
40119	858	3	disk	disk	NN
40119	858	4	with	with	IN
40119	858	5	a	a	DT
40119	858	6	narrow	narrow	JJ
40119	858	7	radial	radial	JJ
40119	858	8	slit	slit	NN
40119	858	9	,	,	,
40119	858	10	about	about	IN
40119	858	11	half	half	PDT
40119	858	12	a	a	DT
40119	858	13	millimetre	millimetre	NN
40119	858	14	(	(	-LRB-
40119	858	15	1/50	1/50	CD
40119	858	16	inch	inch	NN
40119	858	17	)	)	-RRB-
40119	858	18	wide	wide	JJ
40119	858	19	,	,	,
40119	858	20	is	be	VBZ
40119	858	21	caused	cause	VBN
40119	858	22	to	to	TO
40119	858	23	rotate	rotate	VB
40119	858	24	at	at	IN
40119	858	25	the	the	DT
40119	858	26	rate	rate	NN
40119	858	27	of	of	IN
40119	858	28	about	about	RB
40119	858	29	one	one	CD
40119	858	30	turn	turn	NN
40119	858	31	per	per	IN
40119	858	32	second	second	JJ
40119	858	33	in	in	IN
40119	858	34	front	front	NN
40119	858	35	of	of	IN
40119	858	36	a	a	DT
40119	858	37	bright	bright	JJ
40119	858	38	background	background	NN
40119	858	39	,	,	,
40119	858	40	such	such	JJ
40119	858	41	as	as	IN
40119	858	42	a	a	DT
40119	858	43	sheet	sheet	NN
40119	858	44	of	of	IN
40119	858	45	ground	ground	NN
40119	858	46	glass	glass	NN
40119	858	47	with	with	IN
40119	858	48	a	a	DT
40119	858	49	lamp	lamp	NN
40119	858	50	behind	behind	IN
40119	858	51	it	-PRON-	PRP
40119	858	52	,	,	,
40119	858	53	the	the	DT
40119	858	54	moving	move	VBG
40119	858	55	slit	slit	NN
40119	858	56	assumes	assume	VBZ
40119	858	57	the	the	DT
40119	858	58	appearance	appearance	NN
40119	858	59	of	of	IN
40119	858	60	a	a	DT
40119	858	61	fan	fan	NN
40119	858	62	-	-	HYPH
40119	858	63	shaped	shape	VBN
40119	858	64	luminous	luminous	JJ
40119	858	65	patch	patch	NN
40119	858	66	,	,	,
40119	858	67	the	the	DT
40119	858	68	brightness	brightness	NN
40119	858	69	of	of	IN
40119	858	70	which	which	WDT
40119	858	71	diminishes	diminish	VBZ
40119	858	72	with	with	IN
40119	858	73	the	the	DT
40119	858	74	distance	distance	NN
40119	858	75	from	from	IN
40119	858	76	the	the	DT
40119	858	77	leading	lead	VBG
40119	858	78	edge	edge	NN
40119	858	79	.	.	.
40119	859	1	And	and	CC
40119	859	2	if	if	IN
40119	859	3	the	the	DT
40119	859	4	eyes	eye	NNS
40119	859	5	are	be	VBP
40119	859	6	steadily	steadily	RB
40119	859	7	fixed	fix	VBN
40119	859	8	upon	upon	IN
40119	859	9	the	the	DT
40119	859	10	centre	centre	NN
40119	859	11	of	of	IN
40119	859	12	the	the	DT
40119	859	13	disk	disk	NN
40119	859	14	,	,	,
40119	859	15	it	-PRON-	PRP
40119	859	16	will	will	MD
40119	859	17	be	be	VB
40119	859	18	noticed	notice	VBN
40119	859	19	that	that	IN
40119	859	20	this	this	DT
40119	859	21	bright	bright	JJ
40119	859	22	image	image	NN
40119	859	23	is	be	VBZ
40119	859	24	streaked	streak	VBN
40119	859	25	with	with	IN
40119	859	26	a	a	DT
40119	859	27	number	number	NN
40119	859	28	of	of	IN
40119	859	29	dark	dark	JJ
40119	859	30	radial	radial	JJ
40119	859	31	bands	band	NNS
40119	859	32	,	,	,
40119	859	33	suggestive	suggestive	JJ
40119	859	34	of	of	IN
40119	859	35	the	the	DT
40119	859	36	ribs	rib	NNS
40119	859	37	or	or	CC
40119	859	38	sticks	stick	NNS
40119	859	39	of	of	IN
40119	859	40	a	a	DT
40119	859	41	fan	fan	NN
40119	859	42	.	.	.
40119	860	1	Near	near	IN
40119	860	2	the	the	DT
40119	860	3	circumference	circumference	NN
40119	860	4	as	as	RB
40119	860	5	many	many	JJ
40119	860	6	as	as	IN
40119	860	7	four	four	CD
40119	860	8	or	or	CC
40119	860	9	five	five	CD
40119	860	10	such	such	JJ
40119	860	11	dark	dark	JJ
40119	860	12	streaks	streak	NNS
40119	860	13	can	can	MD
40119	860	14	be	be	VB
40119	860	15	distinguished	distinguish	VBN
40119	860	16	without	without	IN
40119	860	17	difficulty	difficulty	NN
40119	860	18	;	;	:
40119	860	19	towards	towards	IN
40119	860	20	the	the	DT
40119	860	21	centre	centre	NN
40119	860	22	they	-PRON-	PRP
40119	860	23	are	be	VBP
40119	860	24	less	less	RBR
40119	860	25	conspicuous	conspicuous	JJ
40119	860	26	,	,	,
40119	860	27	owing	owe	VBG
40119	860	28	to	to	IN
40119	860	29	the	the	DT
40119	860	30	overlapping	overlapping	NN
40119	860	31	of	of	IN
40119	860	32	the	the	DT
40119	860	33	successive	successive	JJ
40119	860	34	images	image	NNS
40119	860	35	of	of	IN
40119	860	36	the	the	DT
40119	860	37	slit	slit	NN
40119	860	38	.	.	.
40119	861	1	The	the	DT
40119	861	2	effect	effect	NN
40119	861	3	is	be	VBZ
40119	861	4	roughly	roughly	RB
40119	861	5	indicated	indicate	VBN
40119	861	6	in	in	IN
40119	861	7	Fig	Fig	NNP
40119	861	8	.	.	.
40119	862	1	41	41	CD
40119	862	2	.	.	.
40119	863	1	[	[	-LRB-
40119	863	2	Illustration	illustration	NN
40119	863	3	:	:	:
40119	863	4	_	_	NNP
40119	863	5	Fig	Fig	NNP
40119	863	6	.	.	.
40119	864	1	41.--Multiple	41.--multiple	CD
40119	864	2	Dark	Dark	NNP
40119	864	3	Bands	Bands	NNPS
40119	864	4	.	.	.
40119	864	5	_	_	NNP
40119	864	6	]	]	-RRB-
40119	864	7	The	the	DT
40119	864	8	dark	dark	JJ
40119	864	9	reaction	reaction	NN
40119	864	10	known	know	VBN
40119	864	11	as	as	IN
40119	864	12	the	the	DT
40119	864	13	Charpentier	Charpentier	NNP
40119	864	14	effect	effect	NN
40119	864	15	occurs	occur	VBZ
40119	864	16	at	at	IN
40119	864	17	the	the	DT
40119	864	18	beginning	beginning	NN
40119	864	19	of	of	IN
40119	864	20	a	a	DT
40119	864	21	period	period	NN
40119	864	22	of	of	IN
40119	864	23	illumination	illumination	NN
40119	864	24	.	.	.
40119	865	1	There	there	EX
40119	865	2	is	be	VBZ
40119	865	3	also	also	RB
40119	865	4	a	a	DT
40119	865	5	dark	dark	JJ
40119	865	6	reaction	reaction	NN
40119	865	7	of	of	IN
40119	865	8	very	very	RB
40119	865	9	short	short	JJ
40119	865	10	duration	duration	NN
40119	865	11	at	at	IN
40119	865	12	the	the	DT
40119	865	13	end	end	NN
40119	865	14	of	of	IN
40119	865	15	a	a	DT
40119	865	16	period	period	NN
40119	865	17	of	of	IN
40119	865	18	illumination	illumination	NN
40119	865	19	.	.	.
40119	866	1	It	-PRON-	PRP
40119	866	2	should	should	MD
40119	866	3	be	be	VB
40119	866	4	explained	explain	VBN
40119	866	5	that	that	IN
40119	866	6	,	,	,
40119	866	7	owing	owe	VBG
40119	866	8	to	to	IN
40119	866	9	what	what	WP
40119	866	10	is	be	VBZ
40119	866	11	called	call	VBN
40119	866	12	the	the	DT
40119	866	13	proper	proper	JJ
40119	866	14	light	light	NN
40119	866	15	of	of	IN
40119	866	16	the	the	DT
40119	866	17	retina	retina	NNP
40119	866	18	,	,	,
40119	866	19	ordinary	ordinary	JJ
40119	866	20	darkness	darkness	NN
40119	866	21	does	do	VBZ
40119	866	22	not	not	RB
40119	866	23	appear	appear	VB
40119	866	24	absolutely	absolutely	RB
40119	866	25	black	black	JJ
40119	866	26	:	:	:
40119	866	27	even	even	RB
40119	866	28	in	in	IN
40119	866	29	a	a	DT
40119	866	30	dark	dark	JJ
40119	866	31	room	room	NN
40119	866	32	on	on	IN
40119	866	33	a	a	DT
40119	866	34	dark	dark	JJ
40119	866	35	night	night	NN
40119	866	36	with	with	IN
40119	866	37	the	the	DT
40119	866	38	eyes	eye	NNS
40119	866	39	carefully	carefully	RB
40119	866	40	covered	cover	VBN
40119	866	41	,	,	,
40119	866	42	there	there	EX
40119	866	43	is	be	VBZ
40119	866	44	always	always	RB
40119	866	45	some	some	DT
40119	866	46	sensation	sensation	NN
40119	866	47	of	of	IN
40119	866	48	luminosity	luminosity	NN
40119	866	49	which	which	WDT
40119	866	50	would	would	MD
40119	866	51	be	be	VB
40119	866	52	sufficient	sufficient	JJ
40119	866	53	to	to	TO
40119	866	54	show	show	VB
40119	866	55	up	up	RP
40119	866	56	a	a	DT
40119	866	57	really	really	RB
40119	866	58	black	black	JJ
40119	866	59	image	image	NN
40119	866	60	if	if	IN
40119	866	61	one	one	PRP
40119	866	62	could	could	MD
40119	866	63	be	be	VB
40119	866	64	produced	produce	VBN
40119	866	65	.	.	.
40119	867	1	Now	now	RB
40119	867	2	the	the	DT
40119	867	3	darkness	darkness	NN
40119	867	4	which	which	WDT
40119	867	5	is	be	VBZ
40119	867	6	experienced	experience	VBN
40119	867	7	after	after	IN
40119	867	8	the	the	DT
40119	867	9	extinction	extinction	NN
40119	867	10	of	of	IN
40119	867	11	a	a	DT
40119	867	12	light	light	NN
40119	867	13	is	be	VBZ
40119	867	14	for	for	IN
40119	867	15	a	a	DT
40119	867	16	small	small	JJ
40119	867	17	fraction	fraction	NN
40119	867	18	of	of	IN
40119	867	19	a	a	DT
40119	867	20	second	second	JJ
40119	867	21	more	more	RBR
40119	867	22	intense	intense	JJ
40119	867	23	than	than	IN
40119	867	24	common	common	JJ
40119	867	25	darkness	darkness	NN
40119	867	26	.	.	.
40119	868	1	The	the	DT
40119	868	2	first	first	JJ
40119	868	3	mention	mention	NN
40119	868	4	of	of	IN
40119	868	5	this	this	DT
40119	868	6	dark	dark	JJ
40119	868	7	reaction	reaction	NN
40119	868	8	perhaps	perhaps	RB
40119	868	9	occurs	occur	VBZ
40119	868	10	in	in	IN
40119	868	11	an	an	DT
40119	868	12	article	article	NN
40119	868	13	contributed	contribute	VBD
40119	868	14	to	to	IN
40119	868	15	_	_	NNP
40119	868	16	Nature	Nature	NNP
40119	868	17	_	_	NNP
40119	868	18	in	in	IN
40119	868	19	1885	1885	CD
40119	868	20	,	,	,
40119	868	21	in	in	IN
40119	868	22	which	which	WDT
40119	868	23	it	-PRON-	PRP
40119	868	24	was	be	VBD
40119	868	25	stated	state	VBN
40119	868	26	that	that	IN
40119	868	27	when	when	WRB
40119	868	28	the	the	DT
40119	868	29	current	current	NN
40119	868	30	was	be	VBD
40119	868	31	cut	cut	VBN
40119	868	32	off	off	RP
40119	868	33	from	from	IN
40119	868	34	an	an	DT
40119	868	35	illuminated	illuminated	JJ
40119	868	36	vacuum	vacuum	NN
40119	868	37	tube	tube	NN
40119	868	38	"	"	``
40119	868	39	the	the	DT
40119	868	40	luminous	luminous	JJ
40119	868	41	image	image	NN
40119	868	42	was	be	VBD
40119	868	43	almost	almost	RB
40119	868	44	instantly	instantly	RB
40119	868	45	replaced	replace	VBN
40119	868	46	by	by	IN
40119	868	47	a	a	DT
40119	868	48	corresponding	corresponding	JJ
40119	868	49	image	image	NN
40119	868	50	which	which	WDT
40119	868	51	seemed	seem	VBD
40119	868	52	to	to	TO
40119	868	53	be	be	VB
40119	868	54	intensely	intensely	RB
40119	868	55	black	black	JJ
40119	868	56	upon	upon	IN
40119	868	57	a	a	DT
40119	868	58	less	less	RBR
40119	868	59	dark	dark	JJ
40119	868	60	background	background	NN
40119	868	61	,	,	,
40119	868	62	"	"	''
40119	868	63	and	and	CC
40119	868	64	which	which	WDT
40119	868	65	was	be	VBD
40119	868	66	estimated	estimate	VBN
40119	868	67	to	to	TO
40119	868	68	last	last	VB
40119	868	69	from	from	IN
40119	868	70	a	a	DT
40119	868	71	-	-	HYPH
40119	868	72	quarter	quarter	NN
40119	868	73	to	to	IN
40119	868	74	a	a	DT
40119	868	75	-	-	HYPH
40119	868	76	half	half	NN
40119	868	77	second	second	JJ
40119	868	78	.	.	.
40119	869	1	"	"	``
40119	869	2	Abnormal	abnormal	JJ
40119	869	3	darkness	darkness	NN
40119	869	4	,	,	,
40119	869	5	"	"	''
40119	869	6	it	-PRON-	PRP
40119	869	7	was	be	VBD
40119	869	8	added	add	VBN
40119	869	9	,	,	,
40119	869	10	"	"	''
40119	869	11	follows	follow	VBZ
40119	869	12	as	as	IN
40119	869	13	a	a	DT
40119	869	14	reaction	reaction	NN
40119	869	15	after	after	IN
40119	869	16	luminosity	luminosity	NN
40119	869	17	.	.	.
40119	869	18	"	"	''
40119	870	1	[	[	-LRB-
40119	870	2	Illustration	illustration	NN
40119	870	3	:	:	:
40119	870	4	_	_	NNP
40119	870	5	Fig	Fig	NNP
40119	870	6	.	.	.
40119	871	1	42.--Temporary	42.--temporary	CD
40119	871	2	Insensitiveness	insensitiveness	NN
40119	871	3	of	of	IN
40119	871	4	the	the	DT
40119	871	5	Eye	Eye	NNP
40119	871	6	.	.	.
40119	871	7	_	_	NNP
40119	871	8	]	]	-RRB-
40119	871	9	In	in	IN
40119	871	10	the	the	DT
40119	871	11	Royal	Royal	NNP
40119	871	12	Society	Society	NNP
40119	871	13	paper	paper	NN
40119	871	14	before	before	IN
40119	871	15	referred	refer	VBN
40119	871	16	to	to	IN
40119	871	17	the	the	DT
40119	871	18	point	point	NN
40119	871	19	is	be	VBZ
40119	871	20	further	further	RB
40119	871	21	discussed	discuss	VBN
40119	871	22	,	,	,
40119	871	23	and	and	CC
40119	871	24	a	a	DT
40119	871	25	method	method	NN
40119	871	26	is	be	VBZ
40119	871	27	described	describe	VBN
40119	871	28	by	by	IN
40119	871	29	which	which	WDT
40119	871	30	the	the	DT
40119	871	31	stage	stage	NN
40119	871	32	of	of	IN
40119	871	33	reaction	reaction	NN
40119	871	34	may	may	MD
40119	871	35	be	be	VB
40119	871	36	easily	easily	RB
40119	871	37	exhibited	exhibit	VBN
40119	871	38	and	and	CC
40119	871	39	its	-PRON-	PRP$
40119	871	40	duration	duration	NN
40119	871	41	approximately	approximately	RB
40119	871	42	measured	measure	VBN
40119	871	43	.	.	.
40119	872	1	If	if	IN
40119	872	2	a	a	DT
40119	872	3	translucent	translucent	JJ
40119	872	4	disk	disk	NN
40119	872	5	,	,	,
40119	872	6	made	make	VBN
40119	872	7	of	of	IN
40119	872	8	stout	stout	RB
40119	872	9	drawing	drawing	NN
40119	872	10	-	-	HYPH
40119	872	11	paper	paper	NN
40119	872	12	and	and	CC
40119	872	13	having	have	VBG
40119	872	14	an	an	DT
40119	872	15	open	open	JJ
40119	872	16	sector	sector	NN
40119	872	17	,	,	,
40119	872	18	is	be	VBZ
40119	872	19	caused	cause	VBN
40119	872	20	to	to	TO
40119	872	21	rotate	rotate	VB
40119	872	22	slowly	slowly	RB
40119	872	23	in	in	IN
40119	872	24	front	front	NN
40119	872	25	of	of	IN
40119	872	26	a	a	DT
40119	872	27	luminous	luminous	JJ
40119	872	28	background	background	NN
40119	872	29	,	,	,
40119	872	30	a	a	DT
40119	872	31	narrow	narrow	JJ
40119	872	32	radial	radial	JJ
40119	872	33	dark	dark	JJ
40119	872	34	band	band	NN
40119	872	35	,	,	,
40119	872	36	like	like	IN
40119	872	37	a	a	DT
40119	872	38	streak	streak	NN
40119	872	39	of	of	IN
40119	872	40	black	black	JJ
40119	872	41	paint	paint	NN
40119	872	42	,	,	,
40119	872	43	appears	appear	VBZ
40119	872	44	upon	upon	IN
40119	872	45	the	the	DT
40119	872	46	paper	paper	NN
40119	872	47	very	very	RB
40119	872	48	near	near	IN
40119	872	49	the	the	DT
40119	872	50	edge	edge	NN
40119	872	51	which	which	WDT
40119	872	52	follows	follow	VBZ
40119	872	53	the	the	DT
40119	872	54	open	open	JJ
40119	872	55	sector	sector	NN
40119	872	56	.	.	.
40119	873	1	From	from	IN
40119	873	2	the	the	DT
40119	873	3	space	space	NN
40119	873	4	covered	cover	VBN
40119	873	5	by	by	IN
40119	873	6	this	this	DT
40119	873	7	band	band	NN
40119	873	8	when	when	WRB
40119	873	9	the	the	DT
40119	873	10	disk	disk	NN
40119	873	11	was	be	VBD
40119	873	12	rotating	rotate	VBG
40119	873	13	at	at	IN
40119	873	14	a	a	DT
40119	873	15	known	know	VBN
40119	873	16	speed	speed	NN
40119	873	17	,	,	,
40119	873	18	the	the	DT
40119	873	19	duration	duration	NN
40119	873	20	of	of	IN
40119	873	21	the	the	DT
40119	873	22	dark	dark	JJ
40119	873	23	reaction	reaction	NN
40119	873	24	was	be	VBD
40119	873	25	calculated	calculate	VBN
40119	873	26	to	to	TO
40119	873	27	be	be	VB
40119	873	28	about	about	RB
40119	873	29	one	one	CD
40119	873	30	-	-	HYPH
40119	873	31	fiftieth	fiftieth	NN
40119	873	32	of	of	IN
40119	873	33	a	a	DT
40119	873	34	second	second	JJ
40119	873	35	;	;	:
40119	873	36	my	-PRON-	PRP$
40119	873	37	original	original	JJ
40119	873	38	estimate	estimate	NN
40119	873	39	was	be	VBD
40119	873	40	therefore	therefore	RB
40119	873	41	an	an	DT
40119	873	42	excessive	excessive	JJ
40119	873	43	one	one	NN
40119	873	44	.	.	.
40119	874	1	The	the	DT
40119	874	2	experiment	experiment	NN
40119	874	3	is	be	VBZ
40119	874	4	illustrated	illustrate	VBN
40119	874	5	in	in	IN
40119	874	6	Fig	Fig	NNP
40119	874	7	.	.	.
40119	875	1	42	42	CD
40119	875	2	.	.	.
40119	876	1	One	one	CD
40119	876	2	more	more	RBR
40119	876	3	interesting	interesting	JJ
40119	876	4	point	point	NN
40119	876	5	should	should	MD
40119	876	6	be	be	VB
40119	876	7	noticed	notice	VBN
40119	876	8	in	in	IN
40119	876	9	the	the	DT
40119	876	10	train	train	NN
40119	876	11	of	of	IN
40119	876	12	visual	visual	JJ
40119	876	13	phenomena	phenomenon	NNS
40119	876	14	which	which	WDT
40119	876	15	attend	attend	VBP
40119	876	16	a	a	DT
40119	876	17	period	period	NN
40119	876	18	of	of	IN
40119	876	19	illumination	illumination	NN
40119	876	20	.	.	.
40119	877	1	The	the	DT
40119	877	2	sensation	sensation	NN
40119	877	3	of	of	IN
40119	877	4	luminosity	luminosity	NN
40119	877	5	which	which	WDT
40119	877	6	is	be	VBZ
40119	877	7	excited	excite	VBN
40119	877	8	when	when	WRB
40119	877	9	light	light	JJ
40119	877	10	first	first	JJ
40119	877	11	strikes	strike	VBZ
40119	877	12	the	the	DT
40119	877	13	eye	eye	NN
40119	877	14	is	be	VBZ
40119	877	15	for	for	IN
40119	877	16	about	about	RB
40119	877	17	a	a	DT
40119	877	18	sixtieth	sixtieth	NN
40119	877	19	of	of	IN
40119	877	20	a	a	DT
40119	877	21	second	second	JJ
40119	877	22	much	much	RB
40119	877	23	more	more	RBR
40119	877	24	intense	intense	JJ
40119	877	25	than	than	IN
40119	877	26	it	-PRON-	PRP
40119	877	27	subsequently	subsequently	RB
40119	877	28	becomes	become	VBZ
40119	877	29	.	.	.
40119	878	1	This	this	DT
40119	878	2	is	be	VBZ
40119	878	3	shown	show	VBN
40119	878	4	by	by	IN
40119	878	5	the	the	DT
40119	878	6	fact	fact	NN
40119	878	7	,	,	,
40119	878	8	which	which	WDT
40119	878	9	is	be	VBZ
40119	878	10	obvious	obvious	JJ
40119	878	11	enough	enough	RB
40119	878	12	when	when	WRB
40119	878	13	once	once	RB
40119	878	14	attention	attention	NN
40119	878	15	has	have	VBZ
40119	878	16	been	be	VBN
40119	878	17	directed	direct	VBN
40119	878	18	to	to	IN
40119	878	19	it	-PRON-	PRP
40119	878	20	,	,	,
40119	878	21	that	that	IN
40119	878	22	the	the	DT
40119	878	23	bright	bright	JJ
40119	878	24	band	band	NN
40119	878	25	,	,	,
40119	878	26	which	which	WDT
40119	878	27	in	in	IN
40119	878	28	the	the	DT
40119	878	29	Charpentier	Charpentier	NNP
40119	878	30	disk	disk	NN
40119	878	31	intervenes	intervene	NNS
40119	878	32	between	between	IN
40119	878	33	the	the	DT
40119	878	34	dark	dark	JJ
40119	878	35	band	band	NN
40119	878	36	and	and	CC
40119	878	37	the	the	DT
40119	878	38	leading	lead	VBG
40119	878	39	edge	edge	NN
40119	878	40	of	of	IN
40119	878	41	the	the	DT
40119	878	42	white	white	JJ
40119	878	43	sector	sector	NN
40119	878	44	,	,	,
40119	878	45	appears	appear	VBZ
40119	878	46	to	to	TO
40119	878	47	be	be	VB
40119	878	48	much	much	RB
40119	878	49	more	more	RBR
40119	878	50	strongly	strongly	RB
40119	878	51	illuminated	illuminate	VBN
40119	878	52	than	than	IN
40119	878	53	any	any	DT
40119	878	54	other	other	JJ
40119	878	55	portion	portion	NN
40119	878	56	of	of	IN
40119	878	57	the	the	DT
40119	878	58	sector	sector	NN
40119	878	59	.	.	.
40119	879	1	The	the	DT
40119	879	2	complete	complete	JJ
40119	879	3	order	order	NN
40119	879	4	of	of	IN
40119	879	5	visual	visual	JJ
40119	879	6	phenomena	phenomenon	NNS
40119	879	7	observed	observe	VBN
40119	879	8	when	when	WRB
40119	879	9	the	the	DT
40119	879	10	retina	retina	NNP
40119	879	11	is	be	VBZ
40119	879	12	exposed	expose	VBN
40119	879	13	to	to	IN
40119	879	14	the	the	DT
40119	879	15	action	action	NN
40119	879	16	of	of	IN
40119	879	17	light	light	NN
40119	879	18	for	for	IN
40119	879	19	a	a	DT
40119	879	20	limited	limited	JJ
40119	879	21	time	time	NN
40119	879	22	may	may	MD
40119	879	23	therefore	therefore	RB
40119	879	24	be	be	VB
40119	879	25	summed	sum	VBN
40119	879	26	up	up	RP
40119	879	27	as	as	IN
40119	879	28	follows:--	follows:--	ADD
40119	879	29	(	(	-LRB-
40119	879	30	1	1	LS
40119	879	31	)	)	-RRB-
40119	879	32	Immediately	immediately	RB
40119	879	33	upon	upon	IN
40119	879	34	the	the	DT
40119	879	35	impact	impact	NN
40119	879	36	of	of	IN
40119	879	37	the	the	DT
40119	879	38	light	light	NN
40119	879	39	there	there	EX
40119	879	40	is	be	VBZ
40119	879	41	experienced	experience	VBN
40119	879	42	a	a	DT
40119	879	43	sensation	sensation	NN
40119	879	44	of	of	IN
40119	879	45	luminosity	luminosity	NN
40119	879	46	,	,	,
40119	879	47	the	the	DT
40119	879	48	intensity	intensity	NN
40119	879	49	of	of	IN
40119	879	50	which	which	WDT
40119	879	51	increases	increase	VBZ
40119	879	52	for	for	IN
40119	879	53	about	about	RB
40119	879	54	one	one	CD
40119	879	55	-	-	HYPH
40119	879	56	sixtieth	sixtieth	NN
40119	879	57	of	of	IN
40119	879	58	a	a	DT
40119	879	59	second	second	NN
40119	879	60	:	:	:
40119	879	61	more	more	RBR
40119	879	62	rapidly	rapidly	RB
40119	879	63	towards	towards	IN
40119	879	64	the	the	DT
40119	879	65	end	end	NN
40119	879	66	of	of	IN
40119	879	67	that	that	DT
40119	879	68	period	period	NN
40119	879	69	than	than	IN
40119	879	70	at	at	IN
40119	879	71	first	first	RB
40119	879	72	.	.	.
40119	880	1	(	(	-LRB-
40119	880	2	2	2	LS
40119	880	3	)	)	-RRB-
40119	880	4	Then	then	RB
40119	880	5	ensues	ensue	VBZ
40119	880	6	a	a	DT
40119	880	7	sudden	sudden	JJ
40119	880	8	re	re	NN
40119	880	9	-	-	NN
40119	880	10	action	action	NN
40119	880	11	,	,	,
40119	880	12	lasting	last	VBG
40119	880	13	also	also	RB
40119	880	14	for	for	IN
40119	880	15	about	about	RB
40119	880	16	one	one	CD
40119	880	17	-	-	HYPH
40119	880	18	sixtieth	sixtieth	NN
40119	880	19	of	of	IN
40119	880	20	a	a	DT
40119	880	21	second	second	JJ
40119	880	22	,	,	,
40119	880	23	in	in	IN
40119	880	24	virtue	virtue	NN
40119	880	25	of	of	IN
40119	880	26	which	which	WDT
40119	880	27	the	the	DT
40119	880	28	retina	retina	NNP
40119	880	29	becomes	become	VBZ
40119	880	30	partially	partially	RB
40119	880	31	insensible	insensible	JJ
40119	880	32	to	to	IN
40119	880	33	renewed	renew	VBN
40119	880	34	or	or	CC
40119	880	35	continued	continue	VBN
40119	880	36	luminous	luminous	JJ
40119	880	37	impressions	impression	NNS
40119	880	38	.	.	.
40119	881	1	These	these	DT
40119	881	2	two	two	CD
40119	881	3	effects	effect	NNS
40119	881	4	may	may	MD
40119	881	5	be	be	VB
40119	881	6	repeated	repeat	VBN
40119	881	7	in	in	IN
40119	881	8	a	a	DT
40119	881	9	diminished	diminished	JJ
40119	881	10	degree	degree	NN
40119	881	11	,	,	,
40119	881	12	as	as	RB
40119	881	13	often	often	RB
40119	881	14	as	as	IN
40119	881	15	three	three	CD
40119	881	16	or	or	CC
40119	881	17	four	four	CD
40119	881	18	times	time	NNS
40119	881	19	.	.	.
40119	882	1	(	(	-LRB-
40119	882	2	3	3	LS
40119	882	3	)	)	-RRB-
40119	882	4	The	the	DT
40119	882	5	stage	stage	NN
40119	882	6	of	of	IN
40119	882	7	fluctuation	fluctuation	NN
40119	882	8	is	be	VBZ
40119	882	9	succeeded	succeed	VBN
40119	882	10	by	by	IN
40119	882	11	a	a	DT
40119	882	12	sensation	sensation	NN
40119	882	13	of	of	IN
40119	882	14	steady	steady	JJ
40119	882	15	luminosity	luminosity	NN
40119	882	16	,	,	,
40119	882	17	the	the	DT
40119	882	18	intensity	intensity	NN
40119	882	19	of	of	IN
40119	882	20	which	which	WDT
40119	882	21	is	be	VBZ
40119	882	22	,	,	,
40119	882	23	however	however	RB
40119	882	24	,	,	,
40119	882	25	considerably	considerably	RB
40119	882	26	below	below	IN
40119	882	27	the	the	DT
40119	882	28	mean	mean	NN
40119	882	29	of	of	IN
40119	882	30	that	that	DT
40119	882	31	experienced	experience	VBN
40119	882	32	during	during	IN
40119	882	33	the	the	DT
40119	882	34	first	first	JJ
40119	882	35	one	one	CD
40119	882	36	-	-	HYPH
40119	882	37	sixtieth	sixtieth	NN
40119	882	38	of	of	IN
40119	882	39	a	a	DT
40119	882	40	second	second	NN
40119	882	41	.	.	.
40119	883	1	(	(	-LRB-
40119	883	2	4	4	LS
40119	883	3	)	)	-RRB-
40119	883	4	After	after	IN
40119	883	5	the	the	DT
40119	883	6	external	external	JJ
40119	883	7	light	light	NN
40119	883	8	has	have	VBZ
40119	883	9	been	be	VBN
40119	883	10	shut	shut	VBN
40119	883	11	off	off	RP
40119	883	12	,	,	,
40119	883	13	a	a	DT
40119	883	14	sensation	sensation	NN
40119	883	15	of	of	IN
40119	883	16	diminishing	diminish	VBG
40119	883	17	luminosity	luminosity	NN
40119	883	18	continues	continue	VBZ
40119	883	19	for	for	IN
40119	883	20	a	a	DT
40119	883	21	short	short	JJ
40119	883	22	time	time	NN
40119	883	23	,	,	,
40119	883	24	and	and	CC
40119	883	25	is	be	VBZ
40119	883	26	succeeded	succeed	VBN
40119	883	27	by	by	IN
40119	883	28	a	a	DT
40119	883	29	brief	brief	JJ
40119	883	30	interval	interval	NN
40119	883	31	of	of	IN
40119	883	32	darkness	darkness	NN
40119	883	33	.	.	.
40119	884	1	(	(	-LRB-
40119	884	2	5	5	LS
40119	884	3	)	)	-RRB-
40119	884	4	Then	then	RB
40119	884	5	follows	follow	VBZ
40119	884	6	a	a	DT
40119	884	7	sudden	sudden	JJ
40119	884	8	and	and	CC
40119	884	9	clearly	clearly	RB
40119	884	10	-	-	HYPH
40119	884	11	defined	define	VBN
40119	884	12	sensation	sensation	NN
40119	884	13	of	of	IN
40119	884	14	what	what	WP
40119	884	15	may	may	MD
40119	884	16	be	be	VB
40119	884	17	called	call	VBN
40119	884	18	abnormal	abnormal	JJ
40119	884	19	darkness	darkness	NN
40119	884	20	--	--	:
40119	884	21	darker	dark	JJR
40119	884	22	than	than	IN
40119	884	23	common	common	JJ
40119	884	24	darkness	darkness	NN
40119	884	25	--	--	:
40119	884	26	which	which	WDT
40119	884	27	lasts	last	VBZ
40119	884	28	for	for	IN
40119	884	29	about	about	RB
40119	884	30	one	one	CD
40119	884	31	-	-	HYPH
40119	884	32	sixtieth	sixtieth	NN
40119	884	33	of	of	IN
40119	884	34	a	a	DT
40119	884	35	second	second	JJ
40119	884	36	,	,	,
40119	884	37	and	and	CC
40119	884	38	is	be	VBZ
40119	884	39	followed	follow	VBN
40119	884	40	by	by	IN
40119	884	41	another	another	DT
40119	884	42	interval	interval	NN
40119	884	43	of	of	IN
40119	884	44	ordinary	ordinary	JJ
40119	884	45	darkness	darkness	NN
40119	884	46	.	.	.
40119	885	1	(	(	-LRB-
40119	885	2	6	6	CD
40119	885	3	)	)	-RRB-
40119	885	4	Finally	finally	RB
40119	885	5	,	,	,
40119	885	6	in	in	IN
40119	885	7	about	about	RB
40119	885	8	a	a	DT
40119	885	9	fifth	fifth	NN
40119	885	10	of	of	IN
40119	885	11	a	a	DT
40119	885	12	second	second	JJ
40119	885	13	after	after	IN
40119	885	14	the	the	DT
40119	885	15	extinction	extinction	NN
40119	885	16	of	of	IN
40119	885	17	the	the	DT
40119	885	18	external	external	JJ
40119	885	19	light	light	NN
40119	885	20	,	,	,
40119	885	21	there	there	EX
40119	885	22	occurs	occur	VBZ
40119	885	23	another	another	DT
40119	885	24	transient	transient	JJ
40119	885	25	impression	impression	NN
40119	885	26	of	of	IN
40119	885	27	luminosity	luminosity	NN
40119	885	28	,	,	,
40119	885	29	generally	generally	RB
40119	885	30	violet	violet	NN
40119	885	31	coloured	colour	VBD
40119	885	32	,	,	,
40119	885	33	after	after	IN
40119	885	34	which	which	WDT
40119	885	35	the	the	DT
40119	885	36	uniformity	uniformity	NN
40119	885	37	of	of	IN
40119	885	38	the	the	DT
40119	885	39	darkness	darkness	NN
40119	885	40	remains	remain	VBZ
40119	885	41	undisturbed	undisturbed	JJ
40119	885	42	.	.	.
40119	886	1	Fig	fig	NN
40119	886	2	.	.	.
40119	887	1	43	43	CD
40119	887	2	,	,	,
40119	887	3	which	which	WDT
40119	887	4	is	be	VBZ
40119	887	5	copied	copy	VBN
40119	887	6	from	from	IN
40119	887	7	my	-PRON-	PRP$
40119	887	8	paper	paper	NN
40119	887	9	,	,	,
40119	887	10	gives	give	VBZ
40119	887	11	a	a	DT
40119	887	12	rough	rough	JJ
40119	887	13	diagrammatic	diagrammatic	JJ
40119	887	14	representation	representation	NN
40119	887	15	of	of	IN
40119	887	16	the	the	DT
40119	887	17	above	above	RB
40119	887	18	described	describe	VBN
40119	887	19	chain	chain	NN
40119	887	20	of	of	IN
40119	887	21	sensations	sensation	NNS
40119	887	22	.	.	.
40119	888	1	No	no	DT
40119	888	2	account	account	NN
40119	888	3	is	be	VBZ
40119	888	4	here	here	RB
40119	888	5	taken	take	VBN
40119	888	6	of	of	IN
40119	888	7	the	the	DT
40119	888	8	comparatively	comparatively	RB
40119	888	9	feeble	feeble	JJ
40119	888	10	after	after	NN
40119	888	11	-	-	HYPH
40119	888	12	images	image	NNS
40119	888	13	which	which	WDT
40119	888	14	succeed	succeed	VBP
40119	888	15	the	the	DT
40119	888	16	recurrent	recurrent	JJ
40119	888	17	image	image	NN
40119	888	18	,	,	,
40119	888	19	and	and	CC
40119	888	20	may	may	MD
40119	888	21	last	last	VB
40119	888	22	for	for	IN
40119	888	23	several	several	JJ
40119	888	24	seconds	second	NNS
40119	888	25	.	.	.
40119	889	1	I	-PRON-	PRP
40119	889	2	propose	propose	VBP
40119	889	3	now	now	RB
40119	889	4	to	to	TO
40119	889	5	say	say	VB
40119	889	6	a	a	DT
40119	889	7	few	few	JJ
40119	889	8	words	word	NNS
40119	889	9	about	about	IN
40119	889	10	a	a	DT
40119	889	11	curious	curious	JJ
40119	889	12	phenomenon	phenomenon	NN
40119	889	13	of	of	IN
40119	889	14	vision	vision	NN
40119	889	15	which	which	WDT
40119	889	16	a	a	DT
40119	889	17	short	short	JJ
40119	889	18	time	time	NN
40119	889	19	ago	ago	RB
40119	889	20	excited	excited	JJ
40119	889	21	considerable	considerable	JJ
40119	889	22	interest	interest	NN
40119	889	23	.	.	.
40119	890	1	[	[	-LRB-
40119	890	2	Illustration	illustration	NN
40119	890	3	:	:	:
40119	890	4	_	_	NNP
40119	890	5	Fig	Fig	NNP
40119	890	6	.	.	.
40119	891	1	43.--Visual	43.--visual	CD
40119	891	2	Sensations	sensation	NNS
40119	891	3	attending	attend	VBG
40119	891	4	a	a	DT
40119	891	5	period	period	NN
40119	891	6	of	of	IN
40119	891	7	Illumination	illumination	NN
40119	891	8	.	.	.
40119	891	9	_	_	NNP
40119	891	10	]	]	-RRB-
40119	891	11	[	[	-LRB-
40119	891	12	Illustration	illustration	NN
40119	891	13	:	:	:
40119	891	14	_	_	NNP
40119	891	15	Fig	Fig	NNP
40119	891	16	.	.	.
40119	892	1	44.--Benham	44.--Benham	NNP
40119	892	2	's	's	POS
40119	892	3	Top	Top	NNP
40119	892	4	.	.	.
40119	892	5	_	_	NNP
40119	892	6	]	]	-RRB-
40119	892	7	In	in	IN
40119	892	8	the	the	DT
40119	892	9	year	year	NN
40119	892	10	1895	1895	CD
40119	892	11	Mr.	Mr.	NNP
40119	892	12	C.	C.	NNP
40119	892	13	E.	E.	NNP
40119	892	14	Benham	Benham	NNP
40119	892	15	brought	bring	VBD
40119	892	16	out	out	RP
40119	892	17	a	a	DT
40119	892	18	pretty	pretty	RB
40119	892	19	little	little	JJ
40119	892	20	toy	toy	NN
40119	892	21	which	which	WDT
40119	892	22	he	-PRON-	PRP
40119	892	23	called	call	VBD
40119	892	24	the	the	DT
40119	892	25	Artificial	Artificial	NNP
40119	892	26	Spectrum	Spectrum	NNP
40119	892	27	Top	Top	NNP
40119	892	28	.	.	.
40119	893	1	It	-PRON-	PRP
40119	893	2	consists	consist	VBZ
40119	893	3	of	of	IN
40119	893	4	a	a	DT
40119	893	5	cardboard	cardboard	NN
40119	893	6	disk	disk	NN
40119	893	7	,	,	,
40119	893	8	one	one	CD
40119	893	9	half	half	NN
40119	893	10	of	of	IN
40119	893	11	which	which	WDT
40119	893	12	is	be	VBZ
40119	893	13	painted	paint	VBN
40119	893	14	black	black	JJ
40119	893	15	,	,	,
40119	893	16	while	while	IN
40119	893	17	on	on	IN
40119	893	18	the	the	DT
40119	893	19	other	other	JJ
40119	893	20	half	half	NN
40119	893	21	are	be	VBP
40119	893	22	drawn	draw	VBN
40119	893	23	four	four	CD
40119	893	24	successive	successive	JJ
40119	893	25	groups	group	NNS
40119	893	26	of	of	IN
40119	893	27	curved	curved	JJ
40119	893	28	black	black	JJ
40119	893	29	lines	line	NNS
40119	893	30	at	at	IN
40119	893	31	different	different	JJ
40119	893	32	distances	distance	NNS
40119	893	33	from	from	IN
40119	893	34	the	the	DT
40119	893	35	centre	centre	NN
40119	893	36	,	,	,
40119	893	37	as	as	IN
40119	893	38	shown	show	VBN
40119	893	39	in	in	IN
40119	893	40	Fig	Fig	NNP
40119	893	41	.	.	.
40119	894	1	44	44	CD
40119	894	2	.	.	.
40119	895	1	When	when	WRB
40119	895	2	the	the	DT
40119	895	3	disk	disk	NN
40119	895	4	rotates	rotate	VBZ
40119	895	5	rather	rather	RB
40119	895	6	slowly	slowly	RB
40119	895	7	,	,	,
40119	895	8	each	each	DT
40119	895	9	group	group	NN
40119	895	10	of	of	IN
40119	895	11	black	black	JJ
40119	895	12	lines	line	NNS
40119	895	13	generally	generally	RB
40119	895	14	appears	appear	VBZ
40119	895	15	to	to	TO
40119	895	16	assume	assume	VB
40119	895	17	a	a	DT
40119	895	18	different	different	JJ
40119	895	19	colour	colour	NN
40119	895	20	,	,	,
40119	895	21	the	the	DT
40119	895	22	nature	nature	NN
40119	895	23	of	of	IN
40119	895	24	which	which	WDT
40119	895	25	depends	depend	VBZ
40119	895	26	upon	upon	IN
40119	895	27	the	the	DT
40119	895	28	speed	speed	NN
40119	895	29	of	of	IN
40119	895	30	the	the	DT
40119	895	31	rotation	rotation	NN
40119	895	32	and	and	CC
40119	895	33	the	the	DT
40119	895	34	intensity	intensity	NN
40119	895	35	and	and	CC
40119	895	36	quality	quality	NN
40119	895	37	of	of	IN
40119	895	38	the	the	DT
40119	895	39	light	light	NN
40119	895	40	.	.	.
40119	896	1	Under	under	IN
40119	896	2	the	the	DT
40119	896	3	best	good	JJS
40119	896	4	conditions	condition	NNS
40119	896	5	the	the	DT
40119	896	6	inner	inner	JJ
40119	896	7	and	and	CC
40119	896	8	outer	outer	JJ
40119	896	9	groups	group	NNS
40119	896	10	of	of	IN
40119	896	11	lines	line	NNS
40119	896	12	become	become	VBP
40119	896	13	bright	bright	JJ
40119	896	14	red	red	JJ
40119	896	15	and	and	CC
40119	896	16	dark	dark	JJ
40119	896	17	blue	blue	NN
40119	896	18	;	;	:
40119	896	19	at	at	IN
40119	896	20	the	the	DT
40119	896	21	same	same	JJ
40119	896	22	time	time	NN
40119	896	23	the	the	DT
40119	896	24	intermediate	intermediate	JJ
40119	896	25	groups	group	NNS
40119	896	26	also	also	RB
40119	896	27	appear	appear	VBP
40119	896	28	tinted	tint	VBN
40119	896	29	,	,	,
40119	896	30	but	but	CC
40119	896	31	the	the	DT
40119	896	32	hues	hue	NNS
40119	896	33	which	which	WDT
40119	896	34	they	-PRON-	PRP
40119	896	35	assume	assume	VBP
40119	896	36	are	be	VBP
40119	896	37	rather	rather	RB
40119	896	38	uncertain	uncertain	JJ
40119	896	39	and	and	CC
40119	896	40	difficult	difficult	JJ
40119	896	41	to	to	TO
40119	896	42	specify	specify	VB
40119	896	43	.	.	.
40119	897	1	By	by	IN
40119	897	2	far	far	RB
40119	897	3	the	the	DT
40119	897	4	most	most	RBS
40119	897	5	striking	striking	JJ
40119	897	6	of	of	IN
40119	897	7	the	the	DT
40119	897	8	colours	colour	NNS
40119	897	9	exhibited	exhibit	VBN
40119	897	10	by	by	IN
40119	897	11	the	the	DT
40119	897	12	top	top	NN
40119	897	13	is	be	VBZ
40119	897	14	the	the	DT
40119	897	15	red	red	NN
40119	897	16	,	,	,
40119	897	17	and	and	CC
40119	897	18	next	next	RB
40119	897	19	to	to	IN
40119	897	20	that	that	DT
40119	897	21	the	the	DT
40119	897	22	blue	blue	JJ
40119	897	23	;	;	:
40119	897	24	this	this	DT
40119	897	25	latter	latter	NN
40119	897	26	is	be	VBZ
40119	897	27	,	,	,
40119	897	28	however	however	RB
40119	897	29	,	,	,
40119	897	30	sometimes	sometimes	RB
40119	897	31	described	describe	VBN
40119	897	32	as	as	IN
40119	897	33	bluish	bluish	JJ
40119	897	34	-	-	HYPH
40119	897	35	green	green	JJ
40119	897	36	.	.	.
40119	898	1	Some	some	DT
40119	898	2	experiments	experiment	NNS
40119	898	3	carried	carry	VBD
40119	898	4	out	out	RP
40119	898	5	by	by	IN
40119	898	6	myself	-PRON-	PRP
40119	898	7	in	in	IN
40119	898	8	1896	1896	CD
40119	898	9	(	(	-LRB-
40119	898	10	Proc	Proc	NNP
40119	898	11	.	.	.
40119	899	1	Roy	Roy	NNP
40119	899	2	.	.	.
40119	900	1	Soc	Soc	NNP
40119	900	2	.	.	NNP
40119	900	3	,	,	,
40119	900	4	vol	vol	NNP
40119	900	5	.	.	.
40119	901	1	60	60	CD
40119	901	2	,	,	,
40119	901	3	p.	p.	NN
40119	901	4	370	370	CD
40119	901	5	)	)	-RRB-
40119	901	6	seem	seem	VBP
40119	901	7	to	to	TO
40119	901	8	indicate	indicate	VB
40119	901	9	pretty	pretty	RB
40119	901	10	clearly	clearly	RB
40119	901	11	the	the	DT
40119	901	12	cause	cause	NN
40119	901	13	of	of	IN
40119	901	14	the	the	DT
40119	901	15	remarkable	remarkable	JJ
40119	901	16	bright	bright	JJ
40119	901	17	red	red	JJ
40119	901	18	colour	colour	NN
40119	901	19	,	,	,
40119	901	20	and	and	CC
40119	901	21	also	also	RB
40119	901	22	that	that	DT
40119	901	23	of	of	IN
40119	901	24	the	the	DT
40119	901	25	blue	blue	NN
40119	901	26	.	.	.
40119	902	1	The	the	DT
40119	902	2	more	more	RBR
40119	902	3	feeble	feeble	JJ
40119	902	4	tints	tint	NNS
40119	902	5	of	of	IN
40119	902	6	the	the	DT
40119	902	7	two	two	CD
40119	902	8	intermediate	intermediate	JJ
40119	902	9	groups	group	NNS
40119	902	10	of	of	IN
40119	902	11	lines	line	NNS
40119	902	12	perhaps	perhaps	RB
40119	902	13	result	result	VBP
40119	902	14	from	from	IN
40119	902	15	similar	similar	JJ
40119	902	16	causes	cause	NNS
40119	902	17	in	in	IN
40119	902	18	a	a	DT
40119	902	19	modified	modify	VBN
40119	902	20	form	form	NN
40119	902	21	,	,	,
40119	902	22	but	but	CC
40119	902	23	these	these	DT
40119	902	24	have	have	VBP
40119	902	25	not	not	RB
40119	902	26	yet	yet	RB
40119	902	27	been	be	VBN
40119	902	28	investigated	investigate	VBN
40119	902	29	.	.	.
40119	903	1	In	in	IN
40119	903	2	the	the	DT
40119	903	3	red	red	JJ
40119	903	4	colour	colour	NN
40119	903	5	we	-PRON-	PRP
40119	903	6	have	have	VBP
40119	903	7	another	another	DT
40119	903	8	striking	striking	JJ
40119	903	9	example	example	NN
40119	903	10	of	of	IN
40119	903	11	an	an	DT
40119	903	12	exceedingly	exceedingly	RB
40119	903	13	common	common	JJ
40119	903	14	phenomenon	phenomenon	NN
40119	903	15	which	which	WDT
40119	903	16	is	be	VBZ
40119	903	17	habitually	habitually	RB
40119	903	18	disregarded	disregarded	JJ
40119	903	19	;	;	:
40119	903	20	indeed	indeed	RB
40119	903	21	I	-PRON-	PRP
40119	903	22	can	can	MD
40119	903	23	find	find	VB
40119	903	24	no	no	DT
40119	903	25	record	record	NN
40119	903	26	of	of	IN
40119	903	27	its	-PRON-	PRP$
40119	903	28	ever	ever	RB
40119	903	29	having	have	VBG
40119	903	30	been	be	VBN
40119	903	31	noticed	notice	VBN
40119	903	32	at	at	RB
40119	903	33	all	all	RB
40119	903	34	.	.	.
40119	904	1	The	the	DT
40119	904	2	fact	fact	NN
40119	904	3	is	be	VBZ
40119	904	4	that	that	IN
40119	904	5	whenever	whenever	WRB
40119	904	6	a	a	DT
40119	904	7	bright	bright	JJ
40119	904	8	image	image	NN
40119	904	9	is	be	VBZ
40119	904	10	suddenly	suddenly	RB
40119	904	11	formed	form	VBN
40119	904	12	upon	upon	IN
40119	904	13	the	the	DT
40119	904	14	retina	retina	NNP
40119	904	15	after	after	IN
40119	904	16	a	a	DT
40119	904	17	period	period	NN
40119	904	18	of	of	IN
40119	904	19	comparative	comparative	JJ
40119	904	20	darkness	darkness	NN
40119	904	21	,	,	,
40119	904	22	this	this	DT
40119	904	23	image	image	NN
40119	904	24	appears	appear	VBZ
40119	904	25	for	for	IN
40119	904	26	a	a	DT
40119	904	27	short	short	JJ
40119	904	28	time	time	NN
40119	904	29	to	to	TO
40119	904	30	be	be	VB
40119	904	31	surrounded	surround	VBN
40119	904	32	by	by	IN
40119	904	33	a	a	DT
40119	904	34	narrow	narrow	JJ
40119	904	35	coloured	coloured	JJ
40119	904	36	border	border	NN
40119	904	37	,	,	,
40119	904	38	the	the	DT
40119	904	39	colour	colour	NN
40119	904	40	,	,	,
40119	904	41	under	under	IN
40119	904	42	ordinary	ordinary	JJ
40119	904	43	conditions	condition	NNS
40119	904	44	of	of	IN
40119	904	45	illumination	illumination	NN
40119	904	46	,	,	,
40119	904	47	being	be	VBG
40119	904	48	red	red	JJ
40119	904	49	.	.	.
40119	905	1	If	if	IN
40119	905	2	the	the	DT
40119	905	3	light	light	NN
40119	905	4	is	be	VBZ
40119	905	5	very	very	RB
40119	905	6	strong	strong	JJ
40119	905	7	,	,	,
40119	905	8	the	the	DT
40119	905	9	transient	transient	JJ
40119	905	10	border	border	NN
40119	905	11	is	be	VBZ
40119	905	12	greenish	greenish	NN
40119	905	13	-	-	HYPH
40119	905	14	blue	blue	JJ
40119	905	15	,	,	,
40119	905	16	but	but	CC
40119	905	17	this	this	DT
40119	905	18	colour	colour	NN
40119	905	19	,	,	,
40119	905	20	as	as	IN
40119	905	21	will	will	MD
40119	905	22	be	be	VB
40119	905	23	explained	explain	VBN
40119	905	24	later	later	RBR
40119	905	25	,	,	,
40119	905	26	turned	turn	VBD
40119	905	27	out	out	RP
40119	905	28	to	to	TO
40119	905	29	be	be	VB
40119	905	30	merely	merely	RB
40119	905	31	an	an	DT
40119	905	32	after	after	IN
40119	905	33	-	-	HYPH
40119	905	34	effect	effect	NN
40119	905	35	of	of	IN
40119	905	36	red	red	NN
40119	905	37	.	.	.
40119	906	1	Sometimes	sometimes	RB
40119	906	2	,	,	,
40119	906	3	when	when	WRB
40119	906	4	the	the	DT
40119	906	5	object	object	NN
40119	906	6	is	be	VBZ
40119	906	7	in	in	IN
40119	906	8	motion	motion	NN
40119	906	9	,	,	,
40119	906	10	both	both	CC
40119	906	11	red	red	JJ
40119	906	12	and	and	CC
40119	906	13	blue	blue	JJ
40119	906	14	are	be	VBP
40119	906	15	seen	see	VBN
40119	906	16	together	together	RB
40119	906	17	.	.	.
40119	907	1	The	the	DT
40119	907	2	observations	observation	NNS
40119	907	3	were	be	VBD
40119	907	4	first	first	RB
40119	907	5	made	make	VBN
40119	907	6	in	in	IN
40119	907	7	the	the	DT
40119	907	8	following	follow	VBG
40119	907	9	manner	manner	NN
40119	907	10	.	.	.
40119	908	1	A	a	DT
40119	908	2	blackened	blacken	VBN
40119	908	3	zinc	zinc	NN
40119	908	4	plate	plate	NN
40119	908	5	,	,	,
40119	908	6	in	in	IN
40119	908	7	which	which	WDT
40119	908	8	is	be	VBZ
40119	908	9	a	a	DT
40119	908	10	small	small	JJ
40119	908	11	round	round	JJ
40119	908	12	hole	hole	NN
40119	908	13	covered	cover	VBN
40119	908	14	with	with	IN
40119	908	15	a	a	DT
40119	908	16	piece	piece	NN
40119	908	17	of	of	IN
40119	908	18	thin	thin	JJ
40119	908	19	writing	writing	NN
40119	908	20	-	-	HYPH
40119	908	21	paper	paper	NN
40119	908	22	,	,	,
40119	908	23	is	be	VBZ
40119	908	24	fixed	fix	VBN
40119	908	25	over	over	IN
40119	908	26	a	a	DT
40119	908	27	larger	large	JJR
40119	908	28	opening	opening	NN
40119	908	29	in	in	IN
40119	908	30	a	a	DT
40119	908	31	wooden	wooden	JJ
40119	908	32	board	board	NN
40119	908	33	;	;	:
40119	908	34	thus	thus	RB
40119	908	35	we	-PRON-	PRP
40119	908	36	are	be	VBP
40119	908	37	furnished	furnish	VBN
40119	908	38	with	with	IN
40119	908	39	a	a	DT
40119	908	40	sharply	sharply	RB
40119	908	41	-	-	HYPH
40119	908	42	defined	define	VBN
40119	908	43	translucent	translucent	JJ
40119	908	44	disk	disk	NN
40119	908	45	,	,	,
40119	908	46	which	which	WDT
40119	908	47	is	be	VBZ
40119	908	48	surrounded	surround	VBN
40119	908	49	by	by	IN
40119	908	50	a	a	DT
40119	908	51	perfectly	perfectly	RB
40119	908	52	opaque	opaque	JJ
40119	908	53	substance	substance	NN
40119	908	54	.	.	.
40119	909	1	An	an	DT
40119	909	2	arrangement	arrangement	NN
40119	909	3	is	be	VBZ
40119	909	4	provided	provide	VBN
40119	909	5	for	for	IN
40119	909	6	covering	cover	VBG
40119	909	7	the	the	DT
40119	909	8	translucent	translucent	JJ
40119	909	9	disk	disk	NN
40119	909	10	with	with	IN
40119	909	11	a	a	DT
40119	909	12	shutter	shutter	NN
40119	909	13	,	,	,
40119	909	14	which	which	WDT
40119	909	15	can	can	MD
40119	909	16	be	be	VB
40119	909	17	opened	open	VBN
40119	909	18	very	very	RB
40119	909	19	rapidly	rapidly	RB
40119	909	20	by	by	IN
40119	909	21	releasing	release	VBG
40119	909	22	a	a	DT
40119	909	23	strong	strong	JJ
40119	909	24	spring	spring	NN
40119	909	25	.	.	.
40119	910	1	If	if	IN
40119	910	2	this	this	DT
40119	910	3	apparatus	apparatus	NN
40119	910	4	is	be	VBZ
40119	910	5	held	hold	VBN
40119	910	6	between	between	IN
40119	910	7	the	the	DT
40119	910	8	eyes	eye	NNS
40119	910	9	and	and	CC
40119	910	10	a	a	DT
40119	910	11	lamp	lamp	NN
40119	910	12	,	,	,
40119	910	13	and	and	CC
40119	910	14	the	the	DT
40119	910	15	translucent	translucent	JJ
40119	910	16	disk	disk	NN
40119	910	17	is	be	VBZ
40119	910	18	suddenly	suddenly	RB
40119	910	19	disclosed	disclose	VBN
40119	910	20	by	by	IN
40119	910	21	working	work	VBG
40119	910	22	the	the	DT
40119	910	23	shutter	shutter	NN
40119	910	24	,	,	,
40119	910	25	the	the	DT
40119	910	26	disk	disk	NN
40119	910	27	appears	appear	VBZ
40119	910	28	for	for	IN
40119	910	29	a	a	DT
40119	910	30	short	short	JJ
40119	910	31	time	time	NN
40119	910	32	to	to	TO
40119	910	33	be	be	VB
40119	910	34	surrounded	surround	VBN
40119	910	35	by	by	IN
40119	910	36	a	a	DT
40119	910	37	narrow	narrow	JJ
40119	910	38	red	red	JJ
40119	910	39	border	border	NN
40119	910	40	.	.	.
40119	911	1	The	the	DT
40119	911	2	width	width	NN
40119	911	3	of	of	IN
40119	911	4	the	the	DT
40119	911	5	border	border	NN
40119	911	6	is	be	VBZ
40119	911	7	perhaps	perhaps	RB
40119	911	8	a	a	DT
40119	911	9	millimetre	millimetre	NN
40119	911	10	(	(	-LRB-
40119	911	11	1/25	1/25	CD
40119	911	12	inch	inch	NN
40119	911	13	)	)	-RRB-
40119	911	14	,	,	,
40119	911	15	and	and	CC
40119	911	16	the	the	DT
40119	911	17	appearance	appearance	NN
40119	911	18	lasts	last	VBZ
40119	911	19	for	for	IN
40119	911	20	something	something	NN
40119	911	21	like	like	IN
40119	911	22	a	a	DT
40119	911	23	tenth	tenth	NN
40119	911	24	of	of	IN
40119	911	25	a	a	DT
40119	911	26	second	second	NN
40119	911	27	.	.	.
40119	912	1	Most	Most	JJS
40119	912	2	people	people	NNS
40119	912	3	are	be	VBP
40119	912	4	at	at	IN
40119	912	5	first	first	RB
40119	912	6	quite	quite	RB
40119	912	7	unable	unable	JJ
40119	912	8	to	to	TO
40119	912	9	recognise	recognise	VB
40119	912	10	this	this	DT
40119	912	11	effect	effect	NN
40119	912	12	,	,	,
40119	912	13	the	the	DT
40119	912	14	difficulty	difficulty	NN
40119	912	15	being	be	VBG
40119	912	16	,	,	,
40119	912	17	not	not	RB
40119	912	18	to	to	TO
40119	912	19	see	see	VB
40119	912	20	it	-PRON-	PRP
40119	912	21	,	,	,
40119	912	22	but	but	CC
40119	912	23	to	to	TO
40119	912	24	know	know	VB
40119	912	25	that	that	IN
40119	912	26	one	one	NN
40119	912	27	sees	see	VBZ
40119	912	28	it	-PRON-	PRP
40119	912	29	.	.	.
40119	913	1	Those	those	DT
40119	913	2	who	who	WP
40119	913	3	have	have	VBP
40119	913	4	been	be	VBN
40119	913	5	accustomed	accustom	VBN
40119	913	6	to	to	IN
40119	913	7	visual	visual	JJ
40119	913	8	observations	observation	NNS
40119	913	9	generally	generally	RB
40119	913	10	perceive	perceive	VBP
40119	913	11	it	-PRON-	PRP
40119	913	12	without	without	IN
40119	913	13	any	any	DT
40119	913	14	difficulty	difficulty	NN
40119	913	15	when	when	WRB
40119	913	16	they	-PRON-	PRP
40119	913	17	know	know	VBP
40119	913	18	what	what	WP
40119	913	19	to	to	TO
40119	913	20	look	look	VB
40119	913	21	for	for	IN
40119	913	22	,	,	,
40119	913	23	and	and	CC
40119	913	24	no	no	RB
40119	913	25	doubt	doubt	RB
40119	913	26	it	-PRON-	PRP
40119	913	27	would	would	MD
40119	913	28	be	be	VB
40119	913	29	very	very	RB
40119	913	30	evident	evident	JJ
40119	913	31	to	to	IN
40119	913	32	a	a	DT
40119	913	33	baby	baby	NN
40119	913	34	which	which	WDT
40119	913	35	had	have	VBD
40119	913	36	not	not	RB
40119	913	37	advanced	advance	VBN
40119	913	38	very	very	RB
40119	913	39	far	far	RB
40119	913	40	in	in	IN
40119	913	41	the	the	DT
40119	913	42	education	education	NN
40119	913	43	of	of	IN
40119	913	44	its	-PRON-	PRP$
40119	913	45	eyes	eye	NNS
40119	913	46	.	.	.
40119	914	1	The	the	DT
40119	914	2	observation	observation	NN
40119	914	3	is	be	VBZ
40119	914	4	made	make	VBN
40119	914	5	rather	rather	RB
40119	914	6	less	less	RBR
40119	914	7	difficult	difficult	JJ
40119	914	8	by	by	IN
40119	914	9	a	a	DT
40119	914	10	further	further	JJ
40119	914	11	device	device	NN
40119	914	12	.	.	.
40119	915	1	If	if	IN
40119	915	2	the	the	DT
40119	915	3	disk	disk	NN
40119	915	4	is	be	VBZ
40119	915	5	divided	divide	VBN
40119	915	6	into	into	IN
40119	915	7	two	two	CD
40119	915	8	parts	part	NNS
40119	915	9	by	by	IN
40119	915	10	an	an	DT
40119	915	11	opaque	opaque	JJ
40119	915	12	strip	strip	NN
40119	915	13	across	across	IN
40119	915	14	the	the	DT
40119	915	15	middle	middle	NN
40119	915	16	,	,	,
40119	915	17	it	-PRON-	PRP
40119	915	18	is	be	VBZ
40119	915	19	clear	clear	JJ
40119	915	20	that	that	IN
40119	915	21	each	each	DT
40119	915	22	half	half	JJ
40119	915	23	disk	disk	NN
40119	915	24	will	will	MD
40119	915	25	have	have	VB
40119	915	26	its	-PRON-	PRP$
40119	915	27	red	red	JJ
40119	915	28	border	border	NN
40119	915	29	,	,	,
40119	915	30	and	and	CC
40119	915	31	if	if	IN
40119	915	32	the	the	DT
40119	915	33	strip	strip	NN
40119	915	34	is	be	VBZ
40119	915	35	made	make	VBN
40119	915	36	sufficiently	sufficiently	RB
40119	915	37	narrow	narrow	JJ
40119	915	38	,	,	,
40119	915	39	the	the	DT
40119	915	40	red	red	JJ
40119	915	41	borders	border	NNS
40119	915	42	along	along	IN
40119	915	43	its	-PRON-	PRP$
40119	915	44	edges	edge	NNS
40119	915	45	will	will	MD
40119	915	46	meet	meet	VB
40119	915	47	or	or	CC
40119	915	48	perhaps	perhaps	RB
40119	915	49	overlap	overlap	VB
40119	915	50	,	,	,
40119	915	51	and	and	CC
40119	915	52	the	the	DT
40119	915	53	whole	whole	JJ
40119	915	54	strip	strip	NN
40119	915	55	will	will	MD
40119	915	56	,	,	,
40119	915	57	for	for	IN
40119	915	58	a	a	DT
40119	915	59	moment	moment	NN
40119	915	60	after	after	IN
40119	915	61	the	the	DT
40119	915	62	shutter	shutter	NN
40119	915	63	is	be	VBZ
40119	915	64	opened	open	VBN
40119	915	65	,	,	,
40119	915	66	appear	appear	VB
40119	915	67	red	red	JJ
40119	915	68	.	.	.
40119	916	1	A	a	DT
40119	916	2	disk	disk	NN
40119	916	3	was	be	VBD
40119	916	4	thus	thus	RB
40119	916	5	prepared	prepare	VBN
40119	916	6	by	by	IN
40119	916	7	gumming	gum	VBG
40119	916	8	across	across	IN
40119	916	9	the	the	DT
40119	916	10	paper	paper	NN
40119	916	11	a	a	DT
40119	916	12	very	very	RB
40119	916	13	narrow	narrow	JJ
40119	916	14	strip	strip	NN
40119	916	15	of	of	IN
40119	916	16	tinfoil	tinfoil	NNP
40119	916	17	.	.	.
40119	917	1	The	the	DT
40119	917	2	effect	effect	NN
40119	917	3	produced	produce	VBD
40119	917	4	when	when	WRB
40119	917	5	such	such	PDT
40119	917	6	a	a	DT
40119	917	7	disk	disk	NN
40119	917	8	is	be	VBZ
40119	917	9	suddenly	suddenly	RB
40119	917	10	exposed	expose	VBN
40119	917	11	is	be	VBZ
40119	917	12	indicated	indicate	VBN
40119	917	13	in	in	IN
40119	917	14	Fig	Fig	NNP
40119	917	15	.	.	.
40119	918	1	45	45	CD
40119	918	2	,	,	,
40119	918	3	the	the	DT
40119	918	4	red	red	JJ
40119	918	5	colour	colour	NN
40119	918	6	being	be	VBG
40119	918	7	represented	represent	VBN
40119	918	8	by	by	IN
40119	918	9	shading	shade	VBG
40119	918	10	.	.	.
40119	919	1	[	[	-LRB-
40119	919	2	Illustration	illustration	NN
40119	919	3	:	:	:
40119	919	4	_	_	NNP
40119	919	5	Fig	Fig	NNP
40119	919	6	.	.	.
40119	920	1	45.--Demonstration	45.--demonstration	CD
40119	920	2	of	of	IN
40119	920	3	Red	Red	NNP
40119	920	4	Borders	Borders	NNP
40119	920	5	.	.	.
40119	920	6	_	_	NNP
40119	920	7	]	]	-RRB-
40119	920	8	A	a	DT
40119	920	9	simpler	simple	JJR
40119	920	10	apparatus	apparatus	NN
40119	920	11	is	be	VBZ
40119	920	12	,	,	,
40119	920	13	however	however	RB
40119	920	14	,	,	,
40119	920	15	quite	quite	RB
40119	920	16	sufficient	sufficient	JJ
40119	920	17	for	for	IN
40119	920	18	showing	show	VBG
40119	920	19	the	the	DT
40119	920	20	phenomenon,[12	phenomenon,[12	CD
40119	920	21	]	]	-RRB-
40119	920	22	and	and	CC
40119	920	23	with	with	IN
40119	920	24	practice	practice	NN
40119	920	25	one	one	PRP
40119	920	26	can	can	MD
40119	920	27	even	even	RB
40119	920	28	acquire	acquire	VB
40119	920	29	the	the	DT
40119	920	30	power	power	NN
40119	920	31	of	of	IN
40119	920	32	seeing	see	VBG
40119	920	33	it	-PRON-	PRP
40119	920	34	without	without	IN
40119	920	35	any	any	DT
40119	920	36	artificial	artificial	JJ
40119	920	37	aid	aid	NN
40119	920	38	at	at	RB
40119	920	39	all	all	RB
40119	920	40	.	.	.
40119	921	1	I	-PRON-	PRP
40119	921	2	have	have	VBP
40119	921	3	many	many	JJ
40119	921	4	times	time	NNS
40119	921	5	noticed	notice	VBN
40119	921	6	flashes	flash	NNS
40119	921	7	of	of	IN
40119	921	8	red	red	NN
40119	921	9	upon	upon	IN
40119	921	10	the	the	DT
40119	921	11	black	black	JJ
40119	921	12	letters	letter	NNS
40119	921	13	of	of	IN
40119	921	14	a	a	DT
40119	921	15	book	book	NN
40119	921	16	that	that	WDT
40119	921	17	I	-PRON-	PRP
40119	921	18	was	be	VBD
40119	921	19	reading	read	VBG
40119	921	20	,	,	,
40119	921	21	or	or	CC
40119	921	22	upon	upon	IN
40119	921	23	the	the	DT
40119	921	24	edges	edge	NNS
40119	921	25	of	of	IN
40119	921	26	the	the	DT
40119	921	27	page	page	NN
40119	921	28	:	:	:
40119	921	29	bright	bright	JJ
40119	921	30	metallic	metallic	NNP
40119	921	31	,	,	,
40119	921	32	or	or	CC
40119	921	33	polished	polished	JJ
40119	921	34	objects	object	NNS
40119	921	35	often	often	RB
40119	921	36	show	show	VBP
40119	921	37	it	-PRON-	PRP
40119	921	38	when	when	WRB
40119	921	39	they	-PRON-	PRP
40119	921	40	pass	pass	VBP
40119	921	41	across	across	IN
40119	921	42	the	the	DT
40119	921	43	field	field	NN
40119	921	44	of	of	IN
40119	921	45	vision	vision	NN
40119	921	46	in	in	IN
40119	921	47	consequence	consequence	NN
40119	921	48	of	of	IN
40119	921	49	a	a	DT
40119	921	50	movement	movement	NN
40119	921	51	of	of	IN
40119	921	52	the	the	DT
40119	921	53	eyes	eye	NNS
40119	921	54	,	,	,
40119	921	55	and	and	CC
40119	921	56	it	-PRON-	PRP
40119	921	57	was	be	VBD
40119	921	58	an	an	DT
40119	921	59	accidental	accidental	JJ
40119	921	60	observation	observation	NN
40119	921	61	of	of	IN
40119	921	62	this	this	DT
40119	921	63	kind	kind	NN
40119	921	64	which	which	WDT
40119	921	65	suggested	suggest	VBD
40119	921	66	the	the	DT
40119	921	67	following	follow	VBG
40119	921	68	easy	easy	JJ
40119	921	69	way	way	NN
40119	921	70	of	of	IN
40119	921	71	exhibiting	exhibit	VBG
40119	921	72	the	the	DT
40119	921	73	effect	effect	NN
40119	921	74	experimentally	experimentally	RB
40119	921	75	.	.	.
40119	922	1	An	an	DT
40119	922	2	incandescent	incandescent	JJ
40119	922	3	electric	electric	JJ
40119	922	4	lamp	lamp	NN
40119	922	5	was	be	VBD
40119	922	6	fixed	fix	VBN
40119	922	7	behind	behind	IN
40119	922	8	a	a	DT
40119	922	9	round	round	JJ
40119	922	10	hole	hole	NN
40119	922	11	in	in	IN
40119	922	12	a	a	DT
40119	922	13	sheet	sheet	NN
40119	922	14	of	of	IN
40119	922	15	metal	metal	NN
40119	922	16	which	which	WDT
40119	922	17	was	be	VBD
40119	922	18	attached	attach	VBN
40119	922	19	to	to	IN
40119	922	20	a	a	DT
40119	922	21	board	board	NN
40119	922	22	.	.	.
40119	923	1	The	the	DT
40119	923	2	hole	hole	NN
40119	923	3	was	be	VBD
40119	923	4	covered	cover	VBN
40119	923	5	with	with	IN
40119	923	6	two	two	CD
40119	923	7	or	or	CC
40119	923	8	three	three	CD
40119	923	9	thicknesses	thickness	NNS
40119	923	10	of	of	IN
40119	923	11	writing	write	VBG
40119	923	12	paper	paper	NN
40119	923	13	,	,	,
40119	923	14	making	make	VBG
40119	923	15	a	a	DT
40119	923	16	bright	bright	JJ
40119	923	17	disk	disk	NN
40119	923	18	of	of	IN
40119	923	19	nearly	nearly	RB
40119	923	20	uniform	uniform	JJ
40119	923	21	luminosity	luminosity	NN
40119	923	22	.	.	.
40119	924	1	When	when	WRB
40119	924	2	this	this	DT
40119	924	3	arrangement	arrangement	NN
40119	924	4	was	be	VBD
40119	924	5	moved	move	VBN
40119	924	6	rather	rather	RB
40119	924	7	quickly	quickly	RB
40119	924	8	either	either	CC
40119	924	9	backwards	backwards	RB
40119	924	10	and	and	CC
40119	924	11	forwards	forwards	RB
40119	924	12	or	or	CC
40119	924	13	round	round	JJ
40119	924	14	and	and	CC
40119	924	15	round	round	VB
40119	924	16	in	in	IN
40119	924	17	a	a	DT
40119	924	18	small	small	JJ
40119	924	19	circle	circle	NN
40119	924	20	,	,	,
40119	924	21	the	the	DT
40119	924	22	edge	edge	NN
40119	924	23	of	of	IN
40119	924	24	the	the	DT
40119	924	25	streak	streak	NN
40119	924	26	of	of	IN
40119	924	27	light	light	NN
40119	924	28	thus	thus	RB
40119	924	29	formed	form	VBN
40119	924	30	appeared	appear	VBD
40119	924	31	to	to	TO
40119	924	32	be	be	VB
40119	924	33	bordered	border	VBN
40119	924	34	with	with	IN
40119	924	35	red	red	NN
40119	924	36	.	.	.
40119	925	1	If	if	IN
40119	925	2	this	this	DT
40119	925	3	experiment	experiment	NN
40119	925	4	is	be	VBZ
40119	925	5	performed	perform	VBN
40119	925	6	with	with	IN
40119	925	7	a	a	DT
40119	925	8	strong	strong	JJ
40119	925	9	light	light	NN
40119	925	10	behind	behind	IN
40119	925	11	the	the	DT
40119	925	12	paper	paper	NN
40119	925	13	,	,	,
40119	925	14	the	the	DT
40119	925	15	streak	streak	NN
40119	925	16	becomes	become	VBZ
40119	925	17	bordered	border	VBN
40119	925	18	with	with	IN
40119	925	19	greenish	greenish	NN
40119	925	20	-	-	HYPH
40119	925	21	blue	blue	JJ
40119	925	22	instead	instead	RB
40119	925	23	of	of	IN
40119	925	24	red	red	NN
40119	925	25	.	.	.
40119	926	1	With	with	IN
40119	926	2	an	an	DT
40119	926	3	intermediate	intermediate	JJ
40119	926	4	degree	degree	NN
40119	926	5	of	of	IN
40119	926	6	illumination	illumination	NN
40119	926	7	,	,	,
40119	926	8	both	both	DT
40119	926	9	blue	blue	JJ
40119	926	10	and	and	CC
40119	926	11	red	red	NN
40119	926	12	may	may	MD
40119	926	13	be	be	VB
40119	926	14	seen	see	VBN
40119	926	15	together	together	RB
40119	926	16	.	.	.
40119	927	1	Most	Most	JJS
40119	927	2	of	of	IN
40119	927	3	the	the	DT
40119	927	4	effects	effect	NNS
40119	927	5	that	that	WDT
40119	927	6	have	have	VBP
40119	927	7	so	so	RB
40119	927	8	far	far	RB
40119	927	9	been	be	VBN
40119	927	10	described	describe	VBN
40119	927	11	were	be	VBD
40119	927	12	produced	produce	VBN
40119	927	13	by	by	IN
40119	927	14	transmitted	transmit	VBN
40119	927	15	light	light	NN
40119	927	16	,	,	,
40119	927	17	but	but	CC
40119	927	18	reflected	reflect	VBN
40119	927	19	light	light	NN
40119	927	20	will	will	MD
40119	927	21	show	show	VB
40119	927	22	them	-PRON-	PRP
40119	927	23	equally	equally	RB
40119	927	24	well	well	RB
40119	927	25	.	.	.
40119	928	1	If	if	IN
40119	928	2	you	-PRON-	PRP
40119	928	3	place	place	VBP
40119	928	4	a	a	DT
40119	928	5	printed	print	VBN
40119	928	6	book	book	NN
40119	928	7	in	in	IN
40119	928	8	front	front	NN
40119	928	9	of	of	IN
40119	928	10	you	-PRON-	PRP
40119	928	11	near	near	IN
40119	928	12	a	a	DT
40119	928	13	good	good	JJ
40119	928	14	lamp	lamp	NN
40119	928	15	and	and	CC
40119	928	16	interpose	interpose	VB
40119	928	17	a	a	DT
40119	928	18	dark	dark	JJ
40119	928	19	screen	screen	NN
40119	928	20	before	before	IN
40119	928	21	your	-PRON-	PRP$
40119	928	22	eyes	eye	NNS
40119	928	23	,	,	,
40119	928	24	then	then	RB
40119	928	25	,	,	,
40119	928	26	when	when	WRB
40119	928	27	the	the	DT
40119	928	28	screen	screen	NN
40119	928	29	is	be	VBZ
40119	928	30	suddenly	suddenly	RB
40119	928	31	withdrawn	withdraw	VBN
40119	928	32	,	,	,
40119	928	33	the	the	DT
40119	928	34	printed	print	VBN
40119	928	35	letters	letter	NNS
40119	928	36	will	will	MD
40119	928	37	for	for	IN
40119	928	38	a	a	DT
40119	928	39	moment	moment	NN
40119	928	40	appear	appear	VBP
40119	928	41	red	red	JJ
40119	928	42	,	,	,
40119	928	43	quickly	quickly	RB
40119	928	44	changing	change	VBG
40119	928	45	to	to	IN
40119	928	46	black	black	NN
40119	928	47	.	.	.
40119	929	1	Some	some	DT
40119	929	2	practice	practice	NN
40119	929	3	is	be	VBZ
40119	929	4	required	require	VBN
40119	929	5	before	before	IN
40119	929	6	this	this	DT
40119	929	7	observation	observation	NN
40119	929	8	can	can	MD
40119	929	9	be	be	VB
40119	929	10	made	make	VBN
40119	929	11	satisfactorily	satisfactorily	RB
40119	929	12	,	,	,
40119	929	13	but	but	CC
40119	929	14	by	by	IN
40119	929	15	a	a	DT
40119	929	16	simple	simple	JJ
40119	929	17	device	device	NN
40119	929	18	it	-PRON-	PRP
40119	929	19	is	be	VBZ
40119	929	20	possible	possible	JJ
40119	929	21	to	to	TO
40119	929	22	obliterate	obliterate	VB
40119	929	23	the	the	DT
40119	929	24	image	image	NN
40119	929	25	of	of	IN
40119	929	26	the	the	DT
40119	929	27	letters	letter	NNS
40119	929	28	before	before	IN
40119	929	29	the	the	DT
40119	929	30	redness	redness	NN
40119	929	31	has	have	VBZ
40119	929	32	had	have	VBN
40119	929	33	time	time	NN
40119	929	34	to	to	TO
40119	929	35	disappear	disappear	VB
40119	929	36	;	;	:
40119	929	37	the	the	DT
40119	929	38	colour	colour	NN
40119	929	39	then	then	RB
40119	929	40	becomes	become	VBZ
40119	929	41	quite	quite	RB
40119	929	42	easily	easily	RB
40119	929	43	perceptible	perceptible	JJ
40119	929	44	.	.	.
40119	930	1	Hold	hold	VB
40119	930	2	two	two	CD
40119	930	3	screens	screen	NNS
40119	930	4	together	together	RB
40119	930	5	side	side	NN
40119	930	6	by	by	IN
40119	930	7	side	side	NN
40119	930	8	,	,	,
40119	930	9	a	a	DT
40119	930	10	black	black	JJ
40119	930	11	one	one	NN
40119	930	12	and	and	CC
40119	930	13	a	a	DT
40119	930	14	white	white	JJ
40119	930	15	one	one	CD
40119	930	16	,	,	,
40119	930	17	in	in	IN
40119	930	18	such	such	PDT
40119	930	19	a	a	DT
40119	930	20	manner	manner	NN
40119	930	21	that	that	IN
40119	930	22	an	an	DT
40119	930	23	open	open	JJ
40119	930	24	space	space	NN
40119	930	25	is	be	VBZ
40119	930	26	left	leave	VBN
40119	930	27	between	between	IN
40119	930	28	them	-PRON-	PRP
40119	930	29	.	.	.
40119	931	1	(	(	-LRB-
40119	931	2	See	see	VB
40119	931	3	Fig	fig	NN
40119	931	4	.	.	.
40119	932	1	46	46	CD
40119	932	2	.	.	.
40119	932	3	)	)	-RRB-
40119	933	1	In	in	IN
40119	933	2	the	the	DT
40119	933	3	first	first	JJ
40119	933	4	place	place	NN
40119	933	5	let	let	VB
40119	933	6	the	the	DT
40119	933	7	black	black	JJ
40119	933	8	screen	screen	NN
40119	933	9	cover	cover	VB
40119	933	10	the	the	DT
40119	933	11	printing	printing	NN
40119	933	12	;	;	:
40119	933	13	then	then	RB
40119	933	14	quickly	quickly	RB
40119	933	15	move	move	VB
40119	933	16	the	the	DT
40119	933	17	screens	screen	NNS
40119	933	18	sideways	sideway	VBZ
40119	933	19	so	so	IN
40119	933	20	that	that	IN
40119	933	21	the	the	DT
40119	933	22	printed	print	VBN
40119	933	23	letters	letter	NNS
40119	933	24	may	may	MD
40119	933	25	be	be	VB
40119	933	26	for	for	IN
40119	933	27	a	a	DT
40119	933	28	moment	moment	NN
40119	933	29	exposed	expose	VBN
40119	933	30	to	to	TO
40119	933	31	view	view	VB
40119	933	32	through	through	IN
40119	933	33	the	the	DT
40119	933	34	gap	gap	NN
40119	933	35	,	,	,
40119	933	36	stopping	stop	VBG
40119	933	37	the	the	DT
40119	933	38	movement	movement	NN
40119	933	39	as	as	RB
40119	933	40	soon	soon	RB
40119	933	41	as	as	IN
40119	933	42	the	the	DT
40119	933	43	page	page	NN
40119	933	44	is	be	VBZ
40119	933	45	covered	cover	VBN
40119	933	46	by	by	IN
40119	933	47	the	the	DT
40119	933	48	white	white	JJ
40119	933	49	screen	screen	NN
40119	933	50	.	.	.
40119	934	1	During	during	IN
40119	934	2	the	the	DT
40119	934	3	brief	brief	JJ
40119	934	4	glimpse	glimpse	NN
40119	934	5	that	that	WDT
40119	934	6	will	will	MD
40119	934	7	be	be	VB
40119	934	8	had	have	VBN
40119	934	9	of	of	IN
40119	934	10	the	the	DT
40119	934	11	black	black	JJ
40119	934	12	letters	letter	NNS
40119	934	13	while	while	IN
40119	934	14	the	the	DT
40119	934	15	gap	gap	NN
40119	934	16	is	be	VBZ
40119	934	17	passing	pass	VBG
40119	934	18	over	over	IN
40119	934	19	them	-PRON-	PRP
40119	934	20	,	,	,
40119	934	21	they	-PRON-	PRP
40119	934	22	will	will	MD
40119	934	23	,	,	,
40119	934	24	if	if	IN
40119	934	25	the	the	DT
40119	934	26	illumination	illumination	NN
40119	934	27	is	be	VBZ
40119	934	28	suitable	suitable	JJ
40119	934	29	,	,	,
40119	934	30	appear	appear	VB
40119	934	31	to	to	TO
40119	934	32	be	be	VB
40119	934	33	bright	bright	JJ
40119	934	34	red	red	JJ
40119	934	35	.	.	.
40119	935	1	[	[	-LRB-
40119	935	2	Illustration	illustration	NN
40119	935	3	:	:	:
40119	935	4	_	_	NNP
40119	935	5	Fig	Fig	NNP
40119	935	6	.	.	.
40119	936	1	46.--Black	46.--black	CD
40119	936	2	and	and	CC
40119	936	3	White	White	NNP
40119	936	4	Screens	Screens	NNPS
40119	936	5	.	.	.
40119	936	6	_	_	NNP
40119	936	7	]	]	-RRB-
40119	936	8	[	[	-LRB-
40119	936	9	Illustration	illustration	NN
40119	936	10	:	:	:
40119	936	11	_	_	NNP
40119	936	12	Fig	Fig	NNP
40119	936	13	.	.	.
40119	937	1	47.--Disk	47.--disk	CD
40119	937	2	for	for	IN
40119	937	3	Red	Red	NNP
40119	937	4	Borders	Borders	NNP
40119	937	5	.	.	.
40119	937	6	_	_	NNP
40119	937	7	]	]	-RRB-
40119	937	8	We	-PRON-	PRP
40119	937	9	may	may	MD
40119	937	10	go	go	VB
40119	937	11	a	a	DT
40119	937	12	step	step	NN
40119	937	13	further	far	RBR
40119	937	14	.	.	.
40119	938	1	Cut	cut	VB
40119	938	2	out	out	RP
40119	938	3	a	a	DT
40119	938	4	disk	disk	NN
40119	938	5	of	of	IN
40119	938	6	white	white	JJ
40119	938	7	cardboard	cardboard	NN
40119	938	8	,	,	,
40119	938	9	divide	divide	VB
40119	938	10	it	-PRON-	PRP
40119	938	11	into	into	IN
40119	938	12	two	two	CD
40119	938	13	equal	equal	JJ
40119	938	14	parts	part	NNS
40119	938	15	by	by	IN
40119	938	16	a	a	DT
40119	938	17	straight	straight	JJ
40119	938	18	line	line	NN
40119	938	19	through	through	IN
40119	938	20	the	the	DT
40119	938	21	centre	centre	NN
40119	938	22	,	,	,
40119	938	23	and	and	CC
40119	938	24	paint	paint	VB
40119	938	25	one	one	CD
40119	938	26	half	half	NN
40119	938	27	black	black	JJ
40119	938	28	.	.	.
40119	939	1	[	[	-LRB-
40119	939	2	13	13	CD
40119	939	3	]	]	-RRB-
40119	939	4	At	at	IN
40119	939	5	the	the	DT
40119	939	6	junction	junction	NN
40119	939	7	of	of	IN
40119	939	8	the	the	DT
40119	939	9	black	black	JJ
40119	939	10	and	and	CC
40119	939	11	white	white	JJ
40119	939	12	portions	portion	NNS
40119	939	13	cut	cut	VBD
40119	939	14	out	out	RP
40119	939	15	a	a	DT
40119	939	16	gap	gap	NN
40119	939	17	,	,	,
40119	939	18	which	which	WDT
40119	939	19	may	may	MD
40119	939	20	conveniently	conveniently	RB
40119	939	21	be	be	VB
40119	939	22	of	of	IN
40119	939	23	the	the	DT
40119	939	24	form	form	NN
40119	939	25	of	of	IN
40119	939	26	a	a	DT
40119	939	27	sector	sector	NN
40119	939	28	of	of	IN
40119	939	29	45	45	CD
40119	939	30	°	°	NNS
40119	939	31	.	.	.
40119	940	1	(	(	-LRB-
40119	940	2	See	see	VB
40119	940	3	Fig	fig	NN
40119	940	4	.	.	.
40119	941	1	47	47	CD
40119	941	2	.	.	.
40119	941	3	)	)	-RRB-
40119	942	1	Stick	stick	VB
40119	942	2	a	a	DT
40119	942	3	long	long	JJ
40119	942	4	pin	pin	NN
40119	942	5	through	through	IN
40119	942	6	the	the	DT
40119	942	7	centre	centre	NN
40119	942	8	and	and	CC
40119	942	9	hold	hold	VB
40119	942	10	the	the	DT
40119	942	11	arrangement	arrangement	NN
40119	942	12	by	by	IN
40119	942	13	the	the	DT
40119	942	14	pointed	pointed	JJ
40119	942	15	end	end	NN
40119	942	16	of	of	IN
40119	942	17	the	the	DT
40119	942	18	pin	pin	NN
40119	942	19	a	a	DT
40119	942	20	few	few	JJ
40119	942	21	inches	inch	NNS
40119	942	22	above	above	IN
40119	942	23	a	a	DT
40119	942	24	printed	print	VBN
40119	942	25	page	page	NN
40119	942	26	near	near	IN
40119	942	27	a	a	DT
40119	942	28	good	good	JJ
40119	942	29	light	light	NN
40119	942	30	.	.	.
40119	943	1	Make	make	VB
40119	943	2	the	the	DT
40119	943	3	disk	disk	NN
40119	943	4	spin	spin	NN
40119	943	5	at	at	IN
40119	943	6	the	the	DT
40119	943	7	rate	rate	NN
40119	943	8	of	of	IN
40119	943	9	about	about	RB
40119	943	10	five	five	CD
40119	943	11	or	or	CC
40119	943	12	six	six	CD
40119	943	13	turns	turn	VBZ
40119	943	14	a	a	DT
40119	943	15	second	second	JJ
40119	943	16	by	by	IN
40119	943	17	striking	strike	VBG
40119	943	18	the	the	DT
40119	943	19	edge	edge	NN
40119	943	20	with	with	IN
40119	943	21	the	the	DT
40119	943	22	finger	finger	NN
40119	943	23	.	.	.
40119	944	1	As	as	IN
40119	944	2	before	before	RB
40119	944	3	,	,	,
40119	944	4	the	the	DT
40119	944	5	letters	letter	NNS
40119	944	6	when	when	WRB
40119	944	7	seen	see	VBN
40119	944	8	through	through	IN
40119	944	9	the	the	DT
40119	944	10	gap	gap	NN
40119	944	11	will	will	MD
40119	944	12	appear	appear	VB
40119	944	13	red	red	JJ
40119	944	14	,	,	,
40119	944	15	and	and	CC
40119	944	16	persistence	persistence	NN
40119	944	17	will	will	MD
40119	944	18	render	render	VB
40119	944	19	the	the	DT
40119	944	20	repeated	repeat	VBN
40119	944	21	impressions	impression	NNS
40119	944	22	almost	almost	RB
40119	944	23	continuous	continuous	JJ
40119	944	24	so	so	RB
40119	944	25	long	long	RB
40119	944	26	as	as	IN
40119	944	27	the	the	DT
40119	944	28	rotation	rotation	NN
40119	944	29	is	be	VBZ
40119	944	30	kept	keep	VBN
40119	944	31	up	up	RP
40119	944	32	;	;	:
40119	944	33	any	any	DT
40119	944	34	one	one	NN
40119	944	35	seeing	see	VBG
40119	944	36	the	the	DT
40119	944	37	printing	printing	NN
40119	944	38	for	for	IN
40119	944	39	the	the	DT
40119	944	40	first	first	JJ
40119	944	41	time	time	NN
40119	944	42	through	through	IN
40119	944	43	the	the	DT
40119	944	44	rotating	rotating	NN
40119	944	45	disk	disk	NN
40119	944	46	would	would	MD
40119	944	47	believe	believe	VB
40119	944	48	that	that	IN
40119	944	49	it	-PRON-	PRP
40119	944	50	was	be	VBD
40119	944	51	done	do	VBN
40119	944	52	with	with	IN
40119	944	53	red	red	JJ
40119	944	54	ink	ink	NN
40119	944	55	.	.	.
40119	945	1	Care	care	NN
40119	945	2	must	must	MD
40119	945	3	be	be	VB
40119	945	4	taken	take	VBN
40119	945	5	that	that	IN
40119	945	6	the	the	DT
40119	945	7	disk	disk	NN
40119	945	8	does	do	VBZ
40119	945	9	not	not	RB
40119	945	10	cast	cast	VB
40119	945	11	a	a	DT
40119	945	12	shadow	shadow	NN
40119	945	13	upon	upon	IN
40119	945	14	the	the	DT
40119	945	15	page	page	NN
40119	945	16	,	,	,
40119	945	17	and	and	CC
40119	945	18	that	that	IN
40119	945	19	the	the	DT
40119	945	20	intensity	intensity	NN
40119	945	21	of	of	IN
40119	945	22	the	the	DT
40119	945	23	illumination	illumination	NN
40119	945	24	is	be	VBZ
40119	945	25	properly	properly	RB
40119	945	26	adjusted	adjust	VBN
40119	945	27	.	.	.
40119	946	1	I	-PRON-	PRP
40119	946	2	have	have	VBP
40119	946	3	devised	devise	VBN
40119	946	4	several	several	JJ
40119	946	5	rather	rather	RB
40119	946	6	more	more	RBR
40119	946	7	elaborate	elaborate	JJ
40119	946	8	contrivances	contrivance	NNS
40119	946	9	for	for	IN
40119	946	10	making	make	VBG
40119	946	11	the	the	DT
40119	946	12	disks	disk	NNS
40119	946	13	rotate	rotate	VB
40119	946	14	at	at	IN
40119	946	15	a	a	DT
40119	946	16	uniform	uniform	JJ
40119	946	17	speed	speed	NN
40119	946	18	;	;	:
40119	946	19	one	one	CD
40119	946	20	of	of	IN
40119	946	21	these	these	DT
40119	946	22	is	be	VBZ
40119	946	23	shown	show	VBN
40119	946	24	in	in	IN
40119	946	25	Fig	Fig	NNP
40119	946	26	.	.	.
40119	947	1	50	50	CD
40119	947	2	.	.	.
40119	948	1	In	in	IN
40119	948	2	none	none	NN
40119	948	3	of	of	IN
40119	948	4	these	these	DT
40119	948	5	experiments	experiment	NNS
40119	948	6	does	do	VBZ
40119	948	7	an	an	DT
40119	948	8	extended	extend	VBN
40119	948	9	black	black	JJ
40119	948	10	surface	surface	NN
40119	948	11	ever	ever	RB
40119	948	12	appear	appear	VBP
40119	948	13	red	red	JJ
40119	948	14	,	,	,
40119	948	15	but	but	CC
40119	948	16	only	only	RB
40119	948	17	black	black	JJ
40119	948	18	dots	dot	NNS
40119	948	19	or	or	CC
40119	948	20	lines	line	NNS
40119	948	21	.	.	.
40119	949	1	And	and	CC
40119	949	2	the	the	DT
40119	949	3	lines	line	NNS
40119	949	4	must	must	MD
40119	949	5	not	not	RB
40119	949	6	be	be	VB
40119	949	7	too	too	RB
40119	949	8	thick	thick	JJ
40119	949	9	;	;	:
40119	949	10	if	if	IN
40119	949	11	their	-PRON-	PRP$
40119	949	12	thickness	thickness	NN
40119	949	13	is	be	VBZ
40119	949	14	much	much	RB
40119	949	15	more	more	JJR
40119	949	16	than	than	IN
40119	949	17	a	a	DT
40119	949	18	millimetre	millimetre	NN
40119	949	19	(	(	-LRB-
40119	949	20	1/25	1/25	CD
40119	949	21	inch	inch	NN
40119	949	22	)	)	-RRB-
40119	949	23	,	,	,
40119	949	24	the	the	DT
40119	949	25	lines	line	NNS
40119	949	26	,	,	,
40119	949	27	as	as	IN
40119	949	28	seen	see	VBN
40119	949	29	by	by	IN
40119	949	30	an	an	DT
40119	949	31	observer	observer	NN
40119	949	32	from	from	IN
40119	949	33	the	the	DT
40119	949	34	usual	usual	JJ
40119	949	35	distance	distance	NN
40119	949	36	for	for	IN
40119	949	37	reading	reading	NN
40119	949	38	,	,	,
40119	949	39	do	do	VBP
40119	949	40	not	not	RB
40119	949	41	become	become	VB
40119	949	42	red	red	JJ
40119	949	43	throughout	throughout	IN
40119	949	44	,	,	,
40119	949	45	but	but	CC
40119	949	46	only	only	RB
40119	949	47	along	along	IN
40119	949	48	their	-PRON-	PRP$
40119	949	49	edges	edge	NNS
40119	949	50	.	.	.
40119	950	1	The	the	DT
40119	950	2	red	red	JJ
40119	950	3	appearance	appearance	NN
40119	950	4	does	do	VBZ
40119	950	5	not	not	RB
40119	950	6	in	in	IN
40119	950	7	fact	fact	NN
40119	950	8	originate	originate	VB
40119	950	9	in	in	IN
40119	950	10	the	the	DT
40119	950	11	black	black	JJ
40119	950	12	lines	line	NNS
40119	950	13	themselves	-PRON-	PRP
40119	950	14	:	:	:
40119	950	15	these	these	DT
40119	950	16	serve	serve	VBP
40119	950	17	merely	merely	RB
40119	950	18	as	as	IN
40119	950	19	a	a	DT
40119	950	20	background	background	NN
40119	950	21	for	for	IN
40119	950	22	showing	show	VBG
40119	950	23	up	up	RP
40119	950	24	the	the	DT
40119	950	25	red	red	JJ
40119	950	26	border	border	NN
40119	950	27	which	which	WDT
40119	950	28	fringes	fringe	VBZ
40119	950	29	externally	externally	RB
40119	950	30	the	the	DT
40119	950	31	white	white	JJ
40119	950	32	portions	portion	NNS
40119	950	33	of	of	IN
40119	950	34	the	the	DT
40119	950	35	paper	paper	NN
40119	950	36	,	,	,
40119	950	37	and	and	CC
40119	950	38	the	the	DT
40119	950	39	width	width	NN
40119	950	40	of	of	IN
40119	950	41	this	this	DT
40119	950	42	border	border	NN
40119	950	43	does	do	VBZ
40119	950	44	not	not	RB
40119	950	45	exceed	exceed	VB
40119	950	46	about	about	RB
40119	950	47	one	one	CD
40119	950	48	-	-	HYPH
40119	950	49	fifth	fifth	NN
40119	950	50	of	of	IN
40119	950	51	a	a	DT
40119	950	52	degree	degree	NN
40119	950	53	.	.	.
40119	951	1	But	but	CC
40119	951	2	by	by	IN
40119	951	3	employing	employ	VBG
40119	951	4	a	a	DT
40119	951	5	sufficiently	sufficiently	RB
40119	951	6	large	large	JJ
40119	951	7	disk	disk	NN
40119	951	8	and	and	CC
40119	951	9	selecting	selecting	NN
40119	951	10	designs	design	NNS
40119	951	11	or	or	CC
40119	951	12	letters	letter	NNS
40119	951	13	composed	compose	VBN
40119	951	14	of	of	IN
40119	951	15	lines	line	NNS
40119	951	16	of	of	IN
40119	951	17	suitable	suitable	JJ
40119	951	18	thickness	thickness	NN
40119	951	19	,	,	,
40119	951	20	the	the	DT
40119	951	21	colour	colour	NN
40119	951	22	effect	effect	NN
40119	951	23	has	have	VBZ
40119	951	24	been	be	VBN
40119	951	25	shown	show	VBN
40119	951	26	to	to	IN
40119	951	27	a	a	DT
40119	951	28	large	large	JJ
40119	951	29	audience	audience	NN
40119	951	30	.	.	.
40119	952	1	When	when	WRB
40119	952	2	the	the	DT
40119	952	3	disk	disk	NN
40119	952	4	is	be	VBZ
40119	952	5	turned	turn	VBN
40119	952	6	in	in	RP
40119	952	7	the	the	DT
40119	952	8	opposite	opposite	JJ
40119	952	9	direction	direction	NN
40119	952	10	,	,	,
40119	952	11	so	so	IN
40119	952	12	that	that	IN
40119	952	13	the	the	DT
40119	952	14	gap	gap	NN
40119	952	15	is	be	VBZ
40119	952	16	preceded	precede	VBN
40119	952	17	by	by	IN
40119	952	18	white	white	NN
40119	952	19	and	and	CC
40119	952	20	followed	follow	VBN
40119	952	21	by	by	IN
40119	952	22	black	black	JJ
40119	952	23	,	,	,
40119	952	24	the	the	DT
40119	952	25	lines	line	NNS
40119	952	26	of	of	IN
40119	952	27	the	the	DT
40119	952	28	design	design	NN
40119	952	29	appear	appear	VBP
40119	952	30	at	at	IN
40119	952	31	first	first	JJ
40119	952	32	sight	sight	NN
40119	952	33	to	to	TO
40119	952	34	become	become	VB
40119	952	35	dark	dark	JJ
40119	952	36	blue	blue	JJ
40119	952	37	instead	instead	RB
40119	952	38	of	of	IN
40119	952	39	red	red	NN
40119	952	40	.	.	.
40119	953	1	Attentive	attentive	JJ
40119	953	2	observation	observation	NN
40119	953	3	,	,	,
40119	953	4	however	however	RB
40119	953	5	,	,	,
40119	953	6	shows	show	VBZ
40119	953	7	that	that	IN
40119	953	8	the	the	DT
40119	953	9	apparently	apparently	RB
40119	953	10	blue	blue	JJ
40119	953	11	tint	tint	NN
40119	953	12	is	be	VBZ
40119	953	13	not	not	RB
40119	953	14	formed	form	VBN
40119	953	15	upon	upon	IN
40119	953	16	the	the	DT
40119	953	17	lines	line	NNS
40119	953	18	themselves	-PRON-	PRP
40119	953	19	,	,	,
40119	953	20	as	as	IN
40119	953	21	the	the	DT
40119	953	22	red	red	JJ
40119	953	23	tint	tint	NN
40119	953	24	was	be	VBD
40119	953	25	,	,	,
40119	953	26	but	but	CC
40119	953	27	upon	upon	IN
40119	953	28	the	the	DT
40119	953	29	white	white	JJ
40119	953	30	ground	ground	NN
40119	953	31	just	just	RB
40119	953	32	outside	outside	IN
40119	953	33	them	-PRON-	PRP
40119	953	34	.	.	.
40119	954	1	This	this	DT
40119	954	2	introduces	introduce	VBZ
40119	954	3	to	to	IN
40119	954	4	our	-PRON-	PRP$
40119	954	5	notice	notice	NN
40119	954	6	another	another	DT
40119	954	7	border	border	NN
40119	954	8	phenomenon	phenomenon	NN
40119	954	9	,	,	,
40119	954	10	which	which	WDT
40119	954	11	seems	seem	VBZ
40119	954	12	to	to	TO
40119	954	13	present	present	VB
40119	954	14	itself	-PRON-	PRP
40119	954	15	when	when	WRB
40119	954	16	a	a	DT
40119	954	17	dark	dark	JJ
40119	954	18	patch	patch	NN
40119	954	19	is	be	VBZ
40119	954	20	suddenly	suddenly	RB
40119	954	21	formed	form	VBN
40119	954	22	on	on	IN
40119	954	23	a	a	DT
40119	954	24	bright	bright	JJ
40119	954	25	ground	ground	NN
40119	954	26	,	,	,
40119	954	27	for	for	IN
40119	954	28	that	that	DT
40119	954	29	is	be	VBZ
40119	954	30	essentially	essentially	RB
40119	954	31	what	what	WP
40119	954	32	takes	take	VBZ
40119	954	33	place	place	NN
40119	954	34	when	when	WRB
40119	954	35	the	the	DT
40119	954	36	disk	disk	NN
40119	954	37	is	be	VBZ
40119	954	38	turned	turn	VBN
40119	954	39	the	the	DT
40119	954	40	reverse	reverse	JJ
40119	954	41	way	way	NN
40119	954	42	.	.	.
40119	955	1	I	-PRON-	PRP
40119	955	2	made	make	VBD
40119	955	3	some	some	DT
40119	955	4	attempts	attempt	NNS
40119	955	5	to	to	TO
40119	955	6	obtain	obtain	VB
40119	955	7	more	more	RBR
40119	955	8	direct	direct	JJ
40119	955	9	evidence	evidence	NN
40119	955	10	that	that	IN
40119	955	11	such	such	PDT
40119	955	12	a	a	DT
40119	955	13	dark	dark	JJ
40119	955	14	patch	patch	NN
40119	955	15	appeared	appear	VBD
40119	955	16	for	for	IN
40119	955	17	a	a	DT
40119	955	18	moment	moment	NN
40119	955	19	to	to	TO
40119	955	20	have	have	VB
40119	955	21	a	a	DT
40119	955	22	blue	blue	JJ
40119	955	23	border	border	NN
40119	955	24	,	,	,
40119	955	25	and	and	CC
40119	955	26	after	after	IN
40119	955	27	some	some	DT
40119	955	28	trouble	trouble	NN
40119	955	29	succeeded	succeed	VBD
40119	955	30	in	in	IN
40119	955	31	doing	do	VBG
40119	955	32	so	so	RB
40119	955	33	.	.	.
40119	956	1	A	a	DT
40119	956	2	circular	circular	JJ
40119	956	3	aperture	aperture	NN
40119	956	4	was	be	VBD
40119	956	5	cut	cut	VBN
40119	956	6	in	in	IN
40119	956	7	a	a	DT
40119	956	8	wooden	wooden	JJ
40119	956	9	board	board	NN
40119	956	10	and	and	CC
40119	956	11	covered	cover	VBN
40119	956	12	with	with	IN
40119	956	13	white	white	JJ
40119	956	14	paper	paper	NN
40119	956	15	;	;	:
40119	956	16	a	a	DT
40119	956	17	lamp	lamp	NN
40119	956	18	was	be	VBD
40119	956	19	placed	place	VBN
40119	956	20	behind	behind	IN
40119	956	21	the	the	DT
40119	956	22	board	board	NN
40119	956	23	,	,	,
40119	956	24	and	and	CC
40119	956	25	thus	thus	RB
40119	956	26	a	a	DT
40119	956	27	bright	bright	JJ
40119	956	28	disk	disk	NN
40119	956	29	was	be	VBD
40119	956	30	obtained	obtain	VBN
40119	956	31	,	,	,
40119	956	32	as	as	IN
40119	956	33	in	in	IN
40119	956	34	the	the	DT
40119	956	35	former	former	JJ
40119	956	36	experiment	experiment	NN
40119	956	37	.	.	.
40119	957	1	An	an	DT
40119	957	2	arrangement	arrangement	NN
40119	957	3	was	be	VBD
40119	957	4	prepared	prepare	VBN
40119	957	5	by	by	IN
40119	957	6	means	mean	NNS
40119	957	7	of	of	IN
40119	957	8	which	which	WDT
40119	957	9	one	one	CD
40119	957	10	half	half	NN
40119	957	11	of	of	IN
40119	957	12	this	this	DT
40119	957	13	bright	bright	JJ
40119	957	14	disk	disk	NN
40119	957	15	could	could	MD
40119	957	16	be	be	VB
40119	957	17	suddenly	suddenly	RB
40119	957	18	covered	cover	VBN
40119	957	19	by	by	IN
40119	957	20	a	a	DT
40119	957	21	metal	metal	NN
40119	957	22	shutter	shutter	NN
40119	957	23	,	,	,
40119	957	24	and	and	CC
40119	957	25	it	-PRON-	PRP
40119	957	26	was	be	VBD
40119	957	27	found	find	VBN
40119	957	28	that	that	IN
40119	957	29	when	when	WRB
40119	957	30	this	this	DT
40119	957	31	was	be	VBD
40119	957	32	done	do	VBN
40119	957	33	a	a	DT
40119	957	34	narrow	narrow	JJ
40119	957	35	blue	blue	JJ
40119	957	36	band	band	NN
40119	957	37	appeared	appear	VBD
40119	957	38	on	on	IN
40119	957	39	the	the	DT
40119	957	40	bright	bright	JJ
40119	957	41	ground	ground	NN
40119	957	42	just	just	RB
40119	957	43	beyond	beyond	RB
40119	957	44	and	and	CC
40119	957	45	adjoining	adjoin	VBG
40119	957	46	the	the	DT
40119	957	47	edge	edge	NN
40119	957	48	of	of	IN
40119	957	49	the	the	DT
40119	957	50	shutter	shutter	NN
40119	957	51	when	when	WRB
40119	957	52	it	-PRON-	PRP
40119	957	53	had	have	VBD
40119	957	54	come	come	VBN
40119	957	55	to	to	TO
40119	957	56	rest	rest	VB
40119	957	57	.	.	.
40119	958	1	The	the	DT
40119	958	2	blue	blue	JJ
40119	958	3	band	band	NN
40119	958	4	lasted	last	VBD
40119	958	5	for	for	IN
40119	958	6	about	about	RB
40119	958	7	a	a	DT
40119	958	8	tenth	tenth	NN
40119	958	9	of	of	IN
40119	958	10	a	a	DT
40119	958	11	second	second	JJ
40119	958	12	,	,	,
40119	958	13	and	and	CC
40119	958	14	it	-PRON-	PRP
40119	958	15	seemed	seem	VBD
40119	958	16	to	to	TO
40119	958	17	disappear	disappear	VB
40119	958	18	by	by	IN
40119	958	19	retreating	retreat	VBG
40119	958	20	into	into	IN
40119	958	21	the	the	DT
40119	958	22	black	black	JJ
40119	958	23	edge	edge	NN
40119	958	24	of	of	IN
40119	958	25	the	the	DT
40119	958	26	shutter	shutter	NN
40119	958	27	.	.	.
40119	959	1	The	the	DT
40119	959	2	phenomenon	phenomenon	NN
40119	959	3	is	be	VBZ
40119	959	4	illustrated	illustrate	VBN
40119	959	5	in	in	IN
40119	959	6	Fig	Fig	NNP
40119	959	7	.	.	.
40119	960	1	48	48	CD
40119	960	2	,	,	,
40119	960	3	where	where	WRB
40119	960	4	the	the	DT
40119	960	5	shaded	shaded	JJ
40119	960	6	band	band	NN
40119	960	7	indicates	indicate	VBZ
40119	960	8	the	the	DT
40119	960	9	blue	blue	JJ
40119	960	10	border	border	NN
40119	960	11	.	.	.
40119	961	1	[	[	-LRB-
40119	961	2	Illustration	illustration	NN
40119	961	3	:	:	:
40119	961	4	_	_	NNP
40119	961	5	Fig	Fig	NNP
40119	961	6	.	.	.
40119	962	1	48.--Demonstration	48.--demonstration	CD
40119	962	2	of	of	IN
40119	962	3	Blue	Blue	NNP
40119	962	4	Border	Border	NNP
40119	962	5	.	.	.
40119	962	6	_	_	NNP
40119	962	7	]	]	-RRB-
40119	962	8	We	-PRON-	PRP
40119	962	9	have	have	VBP
40119	962	10	then	then	RB
40119	962	11	to	to	TO
40119	962	12	account	account	VB
40119	962	13	,	,	,
40119	962	14	if	if	IN
40119	962	15	possible	possible	JJ
40119	962	16	,	,	,
40119	962	17	for	for	IN
40119	962	18	the	the	DT
40119	962	19	two	two	CD
40119	962	20	facts	fact	NNS
40119	962	21	that	that	WDT
40119	962	22	,	,	,
40119	962	23	in	in	IN
40119	962	24	the	the	DT
40119	962	25	formation	formation	NN
40119	962	26	of	of	IN
40119	962	27	these	these	DT
40119	962	28	transient	transient	JJ
40119	962	29	colour	colour	NN
40119	962	30	-	-	HYPH
40119	962	31	borders	border	NNS
40119	962	32	,	,	,
40119	962	33	the	the	DT
40119	962	34	red	red	JJ
40119	962	35	sensation	sensation	NN
40119	962	36	occurs	occur	VBZ
40119	962	37	in	in	IN
40119	962	38	a	a	DT
40119	962	39	portion	portion	NN
40119	962	40	of	of	IN
40119	962	41	the	the	DT
40119	962	42	retina	retina	NNP
40119	962	43	which	which	WDT
40119	962	44	has	have	VBZ
40119	962	45	not	not	RB
40119	962	46	itself	-PRON-	PRP
40119	962	47	been	be	VBN
40119	962	48	exposed	expose	VBN
40119	962	49	to	to	IN
40119	962	50	the	the	DT
40119	962	51	direct	direct	JJ
40119	962	52	action	action	NN
40119	962	53	of	of	IN
40119	962	54	light	light	NN
40119	962	55	,	,	,
40119	962	56	while	while	IN
40119	962	57	the	the	DT
40119	962	58	blue	blue	JJ
40119	962	59	occurs	occur	VBZ
40119	962	60	in	in	IN
40119	962	61	a	a	DT
40119	962	62	portion	portion	NN
40119	962	63	which	which	WDT
40119	962	64	is	be	VBZ
40119	962	65	steadily	steadily	RB
40119	962	66	illuminated	illuminate	VBN
40119	962	67	,	,	,
40119	962	68	both	both	DT
40119	962	69	colour	colour	NN
40119	962	70	sensations	sensation	NNS
40119	962	71	being	be	VBG
40119	962	72	referred	refer	VBN
40119	962	73	to	to	IN
40119	962	74	localities	locality	NNS
40119	962	75	adjacent	adjacent	JJ
40119	962	76	to	to	IN
40119	962	77	those	those	DT
40119	962	78	in	in	IN
40119	962	79	which	which	WDT
40119	962	80	a	a	DT
40119	962	81	change	change	NN
40119	962	82	of	of	IN
40119	962	83	illumination	illumination	NN
40119	962	84	has	have	VBZ
40119	962	85	suddenly	suddenly	RB
40119	962	86	taken	take	VBN
40119	962	87	place	place	NN
40119	962	88	.	.	.
40119	963	1	Accepting	accept	VBG
40119	963	2	the	the	DT
40119	963	3	Young	Young	NNP
40119	963	4	-	-	HYPH
40119	963	5	Helmholtz	Helmholtz	NNP
40119	963	6	theory	theory	NN
40119	963	7	of	of	IN
40119	963	8	colour	colour	NN
40119	963	9	vision	vision	NN
40119	963	10	,	,	,
40119	963	11	the	the	DT
40119	963	12	effects	effect	NNS
40119	963	13	must	must	MD
40119	963	14	,	,	,
40119	963	15	I	-PRON-	PRP
40119	963	16	think	think	VBP
40119	963	17	,	,	,
40119	963	18	be	be	VB
40119	963	19	attributed	attribute	VBN
40119	963	20	to	to	IN
40119	963	21	a	a	DT
40119	963	22	sympathetic	sympathetic	JJ
40119	963	23	affection	affection	NN
40119	963	24	of	of	IN
40119	963	25	the	the	DT
40119	963	26	red	red	JJ
40119	963	27	nerve	nerve	NN
40119	963	28	fibres	fibre	NNS
40119	963	29	.	.	.
40119	964	1	When	when	WRB
40119	964	2	the	the	DT
40119	964	3	various	various	JJ
40119	964	4	nerve	nerve	NN
40119	964	5	fibres	fibre	NNS
40119	964	6	occupying	occupy	VBG
40119	964	7	a	a	DT
40119	964	8	limited	limited	JJ
40119	964	9	portion	portion	NN
40119	964	10	of	of	IN
40119	964	11	the	the	DT
40119	964	12	retina	retina	NNP
40119	964	13	are	be	VBP
40119	964	14	suddenly	suddenly	RB
40119	964	15	stimulated	stimulate	VBN
40119	964	16	by	by	IN
40119	964	17	white	white	JJ
40119	964	18	light	light	NN
40119	964	19	(	(	-LRB-
40119	964	20	or	or	CC
40119	964	21	by	by	IN
40119	964	22	any	any	DT
40119	964	23	kind	kind	NN
40119	964	24	of	of	IN
40119	964	25	light	light	NN
40119	964	26	which	which	WDT
40119	964	27	contains	contain	VBZ
40119	964	28	a	a	DT
40119	964	29	red	red	JJ
40119	964	30	constituent	constituent	NN
40119	964	31	)	)	-RRB-
40119	964	32	the	the	DT
40119	964	33	immediately	immediately	RB
40119	964	34	surrounding	surround	VBG
40119	964	35	red	red	JJ
40119	964	36	nerve	nerve	NN
40119	964	37	fibres	fibre	NNS
40119	964	38	are	be	VBP
40119	964	39	for	for	IN
40119	964	40	a	a	DT
40119	964	41	short	short	JJ
40119	964	42	period	period	NN
40119	964	43	excited	excite	VBN
40119	964	44	sympathetically	sympathetically	RB
40119	964	45	,	,	,
40119	964	46	while	while	IN
40119	964	47	the	the	DT
40119	964	48	violet	violet	NN
40119	964	49	and	and	CC
40119	964	50	green	green	JJ
40119	964	51	fibres	fibre	NNS
40119	964	52	are	be	VBP
40119	964	53	not	not	RB
40119	964	54	so	so	RB
40119	964	55	excited	excited	JJ
40119	964	56	,	,	,
40119	964	57	or	or	CC
40119	964	58	in	in	IN
40119	964	59	a	a	DT
40119	964	60	much	much	RB
40119	964	61	less	less	JJR
40119	964	62	degree	degree	NN
40119	964	63	.	.	.
40119	965	1	And	and	CC
40119	965	2	again	again	RB
40119	965	3	,	,	,
40119	965	4	when	when	WRB
40119	965	5	light	light	NN
40119	965	6	is	be	VBZ
40119	965	7	suddenly	suddenly	RB
40119	965	8	cut	cut	VBN
40119	965	9	off	off	RP
40119	965	10	from	from	IN
40119	965	11	a	a	DT
40119	965	12	patch	patch	NN
40119	965	13	in	in	IN
40119	965	14	a	a	DT
40119	965	15	bright	bright	JJ
40119	965	16	field	field	NN
40119	965	17	,	,	,
40119	965	18	there	there	EX
40119	965	19	occurs	occur	VBZ
40119	965	20	a	a	DT
40119	965	21	sympathetic	sympathetic	JJ
40119	965	22	insensitive	insensitive	JJ
40119	965	23	reaction	reaction	NN
40119	965	24	in	in	IN
40119	965	25	the	the	DT
40119	965	26	red	red	JJ
40119	965	27	fibres	fibre	NNS
40119	965	28	just	just	RB
40119	965	29	outside	outside	IN
40119	965	30	the	the	DT
40119	965	31	darkened	darken	VBN
40119	965	32	patch	patch	NN
40119	965	33	,	,	,
40119	965	34	in	in	IN
40119	965	35	virtue	virtue	NN
40119	965	36	of	of	IN
40119	965	37	which	which	WDT
40119	965	38	they	-PRON-	PRP
40119	965	39	cease	cease	VBP
40119	965	40	for	for	IN
40119	965	41	a	a	DT
40119	965	42	moment	moment	NN
40119	965	43	to	to	TO
40119	965	44	respond	respond	VB
40119	965	45	to	to	IN
40119	965	46	the	the	DT
40119	965	47	luminous	luminous	JJ
40119	965	48	stimulus	stimulus	NN
40119	965	49	;	;	:
40119	965	50	the	the	DT
40119	965	51	green	green	JJ
40119	965	52	and	and	CC
40119	965	53	violet	violet	NN
40119	965	54	fibres	fibre	NNS
40119	965	55	,	,	,
40119	965	56	by	by	IN
40119	965	57	continuing	continue	VBG
40119	965	58	to	to	TO
40119	965	59	respond	respond	VB
40119	965	60	uninterruptedly	uninterruptedly	RB
40119	965	61	,	,	,
40119	965	62	give	give	VB
40119	965	63	rise	rise	NN
40119	965	64	to	to	IN
40119	965	65	the	the	DT
40119	965	66	sensation	sensation	NN
40119	965	67	of	of	IN
40119	965	68	a	a	DT
40119	965	69	blue	blue	JJ
40119	965	70	border	border	NN
40119	965	71	.	.	.
40119	966	1	It	-PRON-	PRP
40119	966	2	is	be	VBZ
40119	966	3	perhaps	perhaps	RB
40119	966	4	desirable	desirable	JJ
40119	966	5	to	to	TO
40119	966	6	refer	refer	VB
40119	966	7	briefly	briefly	RB
40119	966	8	to	to	IN
40119	966	9	another	another	DT
40119	966	10	proposed	propose	VBN
40119	966	11	explanation	explanation	NN
40119	966	12	of	of	IN
40119	966	13	the	the	DT
40119	966	14	phenomenon	phenomenon	NN
40119	966	15	,	,	,
40119	966	16	which	which	WDT
40119	966	17	occurred	occur	VBD
40119	966	18	to	to	IN
40119	966	19	myself	-PRON-	PRP
40119	966	20	at	at	IN
40119	966	21	an	an	DT
40119	966	22	early	early	JJ
40119	966	23	stage	stage	NN
40119	966	24	of	of	IN
40119	966	25	the	the	DT
40119	966	26	investigation	investigation	NN
40119	966	27	,	,	,
40119	966	28	and	and	CC
40119	966	29	has	have	VBZ
40119	966	30	since	since	IN
40119	966	31	been	be	VBN
40119	966	32	suggested	suggest	VBN
40119	966	33	by	by	IN
40119	966	34	many	many	JJ
40119	966	35	different	different	JJ
40119	966	36	persons	person	NNS
40119	966	37	.	.	.
40119	967	1	The	the	DT
40119	967	2	explanation	explanation	NN
40119	967	3	in	in	IN
40119	967	4	question	question	NN
40119	967	5	is	be	VBZ
40119	967	6	of	of	IN
40119	967	7	a	a	DT
40119	967	8	purely	purely	RB
40119	967	9	physical	physical	JJ
40119	967	10	character	character	NN
40119	967	11	,	,	,
40119	967	12	and	and	CC
40119	967	13	depends	depend	VBZ
40119	967	14	upon	upon	IN
40119	967	15	the	the	DT
40119	967	16	non	non	JJ
40119	967	17	-	-	NN
40119	967	18	achromatism	achromatism	NN
40119	967	19	of	of	IN
40119	967	20	the	the	DT
40119	967	21	eye	eye	NN
40119	967	22	.	.	.
40119	968	1	[	[	-LRB-
40119	968	2	Illustration	illustration	NN
40119	968	3	:	:	:
40119	968	4	_	_	NNP
40119	968	5	Fig	Fig	NNP
40119	968	6	.	.	.
40119	969	1	49.--Disk	49.--disk	CD
40119	969	2	for	for	IN
40119	969	3	experiments	experiment	NNS
40119	969	4	on	on	IN
40119	969	5	the	the	DT
40119	969	6	origin	origin	NN
40119	969	7	of	of	IN
40119	969	8	Colour	Colour	NNP
40119	969	9	-	-	HYPH
40119	969	10	borders	border	NNS
40119	969	11	.	.	.
40119	969	12	_	_	NNP
40119	969	13	]	]	-RRB-
40119	969	14	Without	without	IN
40119	969	15	going	go	VBG
40119	969	16	into	into	IN
40119	969	17	details	detail	NNS
40119	969	18	,	,	,
40119	969	19	it	-PRON-	PRP
40119	969	20	will	will	MD
40119	969	21	suffice	suffice	VB
40119	969	22	to	to	TO
40119	969	23	quote	quote	VB
40119	969	24	a	a	DT
40119	969	25	single	single	JJ
40119	969	26	experiment	experiment	NN
40119	969	27	which	which	WDT
40119	969	28	is	be	VBZ
40119	969	29	of	of	IN
40119	969	30	itself	-PRON-	PRP
40119	969	31	fatal	fatal	JJ
40119	969	32	to	to	IN
40119	969	33	any	any	DT
40119	969	34	such	such	JJ
40119	969	35	theory	theory	NN
40119	969	36	.	.	.
40119	970	1	Prepare	prepare	VB
40119	970	2	a	a	DT
40119	970	3	disk	disk	NN
40119	970	4	like	like	IN
40119	970	5	that	that	DT
40119	970	6	shown	show	VBN
40119	970	7	in	in	IN
40119	970	8	Fig	Fig	NNP
40119	970	9	.	.	.
40119	971	1	49	49	CD
40119	971	2	,	,	,
40119	971	3	and	and	CC
40119	971	4	spin	spin	VB
40119	971	5	it	-PRON-	PRP
40119	971	6	above	above	IN
40119	971	7	a	a	DT
40119	971	8	page	page	NN
40119	971	9	of	of	IN
40119	971	10	printing	print	VBG
40119	971	11	.	.	.
40119	972	1	The	the	DT
40119	972	2	letters	letter	NNS
40119	972	3	beneath	beneath	IN
40119	972	4	the	the	DT
40119	972	5	zone	zone	NN
40119	972	6	which	which	WDT
40119	972	7	is	be	VBZ
40119	972	8	partly	partly	RB
40119	972	9	black	black	JJ
40119	972	10	and	and	CC
40119	972	11	partly	partly	RB
40119	972	12	white	white	JJ
40119	972	13	will	will	MD
40119	972	14	,	,	,
40119	972	15	under	under	IN
40119	972	16	the	the	DT
40119	972	17	usual	usual	JJ
40119	972	18	conditions	condition	NNS
40119	972	19	,	,	,
40119	972	20	turn	turn	VB
40119	972	21	red	red	JJ
40119	972	22	,	,	,
40119	972	23	but	but	CC
40119	972	24	those	those	DT
40119	972	25	beneath	beneath	IN
40119	972	26	the	the	DT
40119	972	27	remainder	remainder	NN
40119	972	28	of	of	IN
40119	972	29	the	the	DT
40119	972	30	disk	disk	NN
40119	972	31	will	will	MD
40119	972	32	retain	retain	VB
40119	972	33	their	-PRON-	PRP$
40119	972	34	blackness	blackness	NN
40119	972	35	.	.	.
40119	973	1	The	the	DT
40119	973	2	demarcation	demarcation	NN
40119	973	3	is	be	VBZ
40119	973	4	quite	quite	RB
40119	973	5	definite	definite	JJ
40119	973	6	,	,	,
40119	973	7	and	and	CC
40119	973	8	a	a	DT
40119	973	9	single	single	JJ
40119	973	10	printed	print	VBN
40119	973	11	word	word	NN
40119	973	12	may	may	MD
40119	973	13	be	be	VB
40119	973	14	made	make	VBN
40119	973	15	to	to	TO
40119	973	16	appear	appear	VB
40119	973	17	red	red	JJ
40119	973	18	in	in	IN
40119	973	19	the	the	DT
40119	973	20	middle	middle	JJ
40119	973	21	and	and	CC
40119	973	22	black	black	JJ
40119	973	23	at	at	IN
40119	973	24	its	-PRON-	PRP$
40119	973	25	two	two	CD
40119	973	26	ends	end	NNS
40119	973	27	.	.	.
40119	974	1	Now	now	RB
40119	974	2	it	-PRON-	PRP
40119	974	3	is	be	VBZ
40119	974	4	,	,	,
40119	974	5	of	of	IN
40119	974	6	course	course	NN
40119	974	7	,	,	,
40119	974	8	impossible	impossible	JJ
40119	974	9	that	that	IN
40119	974	10	the	the	DT
40119	974	11	lenses	lense	NNS
40119	974	12	of	of	IN
40119	974	13	the	the	DT
40119	974	14	eye	eye	NN
40119	974	15	should	should	MD
40119	974	16	be	be	VB
40119	974	17	perfectly	perfectly	RB
40119	974	18	accommodated	accommodate	VBN
40119	974	19	for	for	IN
40119	974	20	the	the	DT
40119	974	21	letters	letter	NNS
40119	974	22	which	which	WDT
40119	974	23	appear	appear	VBP
40119	974	24	black	black	JJ
40119	974	25	,	,	,
40119	974	26	and	and	CC
40119	974	27	at	at	IN
40119	974	28	the	the	DT
40119	974	29	same	same	JJ
40119	974	30	time	time	NN
40119	974	31	seriously	seriously	RB
40119	974	32	out	out	IN
40119	974	33	of	of	IN
40119	974	34	focus	focus	NN
40119	974	35	for	for	IN
40119	974	36	the	the	DT
40119	974	37	others	other	NNS
40119	974	38	.	.	.
40119	975	1	This	this	DT
40119	975	2	explanation	explanation	NN
40119	975	3	,	,	,
40119	975	4	therefore	therefore	RB
40119	975	5	,	,	,
40119	975	6	simple	simple	JJ
40119	975	7	and	and	CC
40119	975	8	obvious	obvious	JJ
40119	975	9	as	as	IN
40119	975	10	it	-PRON-	PRP
40119	975	11	may	may	MD
40119	975	12	seem	seem	VB
40119	975	13	,	,	,
40119	975	14	is	be	VBZ
40119	975	15	altogether	altogether	RB
40119	975	16	untenable	untenable	JJ
40119	975	17	.	.	.
40119	976	1	Whether	whether	IN
40119	976	2	or	or	CC
40119	976	3	not	not	RB
40119	976	4	the	the	DT
40119	976	5	hypothesis	hypothesis	NN
40119	976	6	which	which	WDT
40119	976	7	I	-PRON-	PRP
40119	976	8	have	have	VBP
40119	976	9	suggested	suggest	VBN
40119	976	10	is	be	VBZ
40119	976	11	correct	correct	JJ
40119	976	12	in	in	IN
40119	976	13	all	all	DT
40119	976	14	its	-PRON-	PRP$
40119	976	15	details	detail	NNS
40119	976	16	,	,	,
40119	976	17	it	-PRON-	PRP
40119	976	18	is	be	VBZ
40119	976	19	,	,	,
40119	976	20	I	-PRON-	PRP
40119	976	21	think	think	VBP
40119	976	22	,	,	,
40119	976	23	sufficiently	sufficiently	RB
40119	976	24	obvious	obvious	JJ
40119	976	25	that	that	IN
40119	976	26	the	the	DT
40119	976	27	red	red	JJ
40119	976	28	and	and	CC
40119	976	29	blue	blue	JJ
40119	976	30	colours	colour	NNS
40119	976	31	of	of	IN
40119	976	32	Benham	Benham	NNP
40119	976	33	's	's	POS
40119	976	34	top	top	NN
40119	976	35	are	be	VBP
40119	976	36	due	due	JJ
40119	976	37	to	to	IN
40119	976	38	exactly	exactly	RB
40119	976	39	the	the	DT
40119	976	40	same	same	JJ
40119	976	41	causes	cause	NNS
40119	976	42	as	as	IN
40119	976	43	the	the	DT
40119	976	44	colours	colour	NNS
40119	976	45	observed	observe	VBN
40119	976	46	in	in	IN
40119	976	47	my	-PRON-	PRP$
40119	976	48	own	own	JJ
40119	976	49	experiments	experiment	NNS
40119	976	50	,	,	,
40119	976	51	for	for	IN
40119	976	52	the	the	DT
40119	976	53	essential	essential	JJ
40119	976	54	conditions	condition	NNS
40119	976	55	are	be	VBP
40119	976	56	the	the	DT
40119	976	57	same	same	JJ
40119	976	58	in	in	IN
40119	976	59	both	both	DT
40119	976	60	cases	case	NNS
40119	976	61	.	.	.
40119	977	1	The	the	DT
40119	977	2	last	last	JJ
40119	977	3	curiosity	curiosity	NN
40119	977	4	which	which	WDT
40119	977	5	I	-PRON-	PRP
40119	977	6	will	will	MD
40119	977	7	notice	notice	VB
40119	977	8	is	be	VBZ
40119	977	9	connected	connect	VBN
40119	977	10	with	with	IN
40119	977	11	the	the	DT
40119	977	12	fact	fact	NN
40119	977	13	already	already	RB
40119	977	14	mentioned	mention	VBN
40119	977	15	,	,	,
40119	977	16	that	that	IN
40119	977	17	when	when	WRB
40119	977	18	the	the	DT
40119	977	19	illumination	illumination	NN
40119	977	20	is	be	VBZ
40119	977	21	strong	strong	JJ
40119	977	22	,	,	,
40119	977	23	the	the	DT
40119	977	24	transient	transient	JJ
40119	977	25	border	border	NN
40119	977	26	-	-	HYPH
40119	977	27	colours	colour	NNS
40119	977	28	are	be	VBP
40119	977	29	nearly	nearly	RB
40119	977	30	reversed	reverse	VBN
40119	977	31	,	,	,
40119	977	32	greenish	greenish	JJ
40119	977	33	-	-	HYPH
40119	977	34	blue	blue	JJ
40119	977	35	appearing	appear	VBG
40119	977	36	in	in	IN
40119	977	37	place	place	NN
40119	977	38	of	of	IN
40119	977	39	red	red	NN
40119	977	40	,	,	,
40119	977	41	and	and	CC
40119	977	42	brick	brick	NN
40119	977	43	-	-	HYPH
40119	977	44	red	red	JJ
40119	977	45	in	in	IN
40119	977	46	place	place	NN
40119	977	47	of	of	IN
40119	977	48	blue	blue	NNP
40119	977	49	.	.	.
40119	978	1	I	-PRON-	PRP
40119	978	2	was	be	VBD
40119	978	3	for	for	IN
40119	978	4	a	a	DT
40119	978	5	long	long	JJ
40119	978	6	time	time	NN
40119	978	7	quite	quite	RB
40119	978	8	unable	unable	JJ
40119	978	9	to	to	TO
40119	978	10	imagine	imagine	VB
40119	978	11	any	any	DT
40119	978	12	reasonably	reasonably	RB
40119	978	13	probable	probable	JJ
40119	978	14	explanation	explanation	NN
40119	978	15	of	of	IN
40119	978	16	this	this	DT
40119	978	17	circumstance	circumstance	NN
40119	978	18	,	,	,
40119	978	19	but	but	CC
40119	978	20	a	a	DT
40119	978	21	clue	clue	NN
40119	978	22	was	be	VBD
40119	978	23	finally	finally	RB
40119	978	24	obtained	obtain	VBN
40119	978	25	from	from	IN
40119	978	26	consideration	consideration	NN
40119	978	27	of	of	IN
40119	978	28	the	the	DT
40119	978	29	fact	fact	NN
40119	978	30	that	that	IN
40119	978	31	greenish	greenish	NN
40119	978	32	-	-	HYPH
40119	978	33	blue	blue	JJ
40119	978	34	is	be	VBZ
40119	978	35	the	the	DT
40119	978	36	complementary	complementary	JJ
40119	978	37	colour	colour	NN
40119	978	38	to	to	IN
40119	978	39	red	red	NN
40119	978	40	,	,	,
40119	978	41	and	and	CC
40119	978	42	in	in	IN
40119	978	43	a	a	DT
40119	978	44	subsequent	subsequent	JJ
40119	978	45	memoir	memoir	NN
40119	978	46	(	(	-LRB-
40119	978	47	Proc	Proc	NNP
40119	978	48	.	.	.
40119	979	1	Roy	Roy	NNP
40119	979	2	.	.	.
40119	980	1	Soc	Soc	NNP
40119	980	2	.	.	NNP
40119	980	3	,	,	,
40119	980	4	vol	vol	NNP
40119	980	5	.	.	.
40119	981	1	61	61	CD
40119	981	2	,	,	,
40119	981	3	p.	p.	NN
40119	981	4	269	269	CD
40119	981	5	)	)	-RRB-
40119	981	6	some	some	DT
40119	981	7	experiments	experiment	NNS
40119	981	8	were	be	VBD
40119	981	9	described	describe	VBN
40119	981	10	which	which	WDT
40119	981	11	show	show	NN
40119	981	12	,	,	,
40119	981	13	as	as	IN
40119	981	14	I	-PRON-	PRP
40119	981	15	believe	believe	VBP
40119	981	16	conclusively	conclusively	RB
40119	981	17	,	,	,
40119	981	18	that	that	IN
40119	981	19	the	the	DT
40119	981	20	greenish	greenish	JJ
40119	981	21	-	-	HYPH
40119	981	22	blue	blue	JJ
40119	981	23	borders	border	NNS
40119	981	24	seen	see	VBN
40119	981	25	in	in	IN
40119	981	26	a	a	DT
40119	981	27	strong	strong	JJ
40119	981	28	light	light	NN
40119	981	29	are	be	VBP
40119	981	30	simply	simply	RB
40119	981	31	negative	negative	JJ
40119	981	32	after	after	IN
40119	981	33	-	-	HYPH
40119	981	34	images	image	NNS
40119	981	35	of	of	IN
40119	981	36	the	the	DT
40119	981	37	usual	usual	JJ
40119	981	38	red	red	JJ
40119	981	39	one	one	NN
40119	981	40	.	.	.
40119	982	1	These	these	DT
40119	982	2	negative	negative	JJ
40119	982	3	after	after	IN
40119	982	4	-	-	HYPH
40119	982	5	images	image	NNS
40119	982	6	are	be	VBP
40119	982	7	of	of	IN
40119	982	8	the	the	DT
40119	982	9	familiar	familiar	JJ
40119	982	10	kind	kind	NN
40119	982	11	that	that	WDT
40119	982	12	are	be	VBP
40119	982	13	observed	observe	VBN
40119	982	14	after	after	IN
40119	982	15	one	one	CD
40119	982	16	has	have	VBZ
40119	982	17	gazed	gaze	VBN
40119	982	18	for	for	IN
40119	982	19	some	some	DT
40119	982	20	time	time	NN
40119	982	21	at	at	IN
40119	982	22	a	a	DT
40119	982	23	bright	bright	JJ
40119	982	24	coloured	coloured	JJ
40119	982	25	object	object	NN
40119	982	26	.	.	.
40119	983	1	If	if	IN
40119	983	2	a	a	DT
40119	983	3	red	red	JJ
40119	983	4	"	"	``
40119	983	5	wafer	wafer	NN
40119	983	6	"	"	''
40119	983	7	lying	lie	VBG
40119	983	8	upon	upon	IN
40119	983	9	a	a	DT
40119	983	10	sheet	sheet	NN
40119	983	11	of	of	IN
40119	983	12	white	white	JJ
40119	983	13	or	or	CC
40119	983	14	grey	grey	JJ
40119	983	15	paper	paper	NN
40119	983	16	is	be	VBZ
40119	983	17	looked	look	VBN
40119	983	18	at	at	IN
40119	983	19	steadily	steadily	RB
40119	983	20	for	for	IN
40119	983	21	about	about	IN
40119	983	22	half	half	PDT
40119	983	23	a	a	DT
40119	983	24	minute	minute	NN
40119	983	25	,	,	,
40119	983	26	and	and	CC
40119	983	27	the	the	DT
40119	983	28	gaze	gaze	NN
40119	983	29	is	be	VBZ
40119	983	30	then	then	RB
40119	983	31	suddenly	suddenly	RB
40119	983	32	transferred	transfer	VBN
40119	983	33	to	to	IN
40119	983	34	some	some	DT
40119	983	35	other	other	JJ
40119	983	36	part	part	NN
40119	983	37	of	of	IN
40119	983	38	the	the	DT
40119	983	39	paper	paper	NN
40119	983	40	,	,	,
40119	983	41	a	a	DT
40119	983	42	greenish	greenish	JJ
40119	983	43	-	-	HYPH
40119	983	44	blue	blue	JJ
40119	983	45	ghost	ghost	NN
40119	983	46	of	of	IN
40119	983	47	the	the	DT
40119	983	48	wafer	wafer	NN
40119	983	49	will	will	MD
40119	983	50	be	be	VB
40119	983	51	seen	see	VBN
40119	983	52	.	.	.
40119	984	1	The	the	DT
40119	984	2	portion	portion	NN
40119	984	3	of	of	IN
40119	984	4	the	the	DT
40119	984	5	retina	retina	NNP
40119	984	6	upon	upon	IN
40119	984	7	which	which	WDT
40119	984	8	the	the	DT
40119	984	9	red	red	JJ
40119	984	10	image	image	NN
40119	984	11	at	at	IN
40119	984	12	first	first	JJ
40119	984	13	falls	falls	NNP
40119	984	14	becomes	become	VBZ
40119	984	15	fatigued	fatigued	JJ
40119	984	16	and	and	CC
40119	984	17	partially	partially	RB
40119	984	18	insensible	insensible	JJ
40119	984	19	to	to	IN
40119	984	20	red	red	JJ
40119	984	21	light	light	NN
40119	984	22	;	;	:
40119	984	23	it	-PRON-	PRP
40119	984	24	is	be	VBZ
40119	984	25	therefore	therefore	RB
40119	984	26	unable	unable	JJ
40119	984	27	to	to	TO
40119	984	28	appreciate	appreciate	VB
40119	984	29	the	the	DT
40119	984	30	red	red	JJ
40119	984	31	component	component	NN
40119	984	32	of	of	IN
40119	984	33	the	the	DT
40119	984	34	white	white	JJ
40119	984	35	light	light	NN
40119	984	36	afterwards	afterwards	RB
40119	984	37	reflected	reflect	VBN
40119	984	38	to	to	IN
40119	984	39	it	-PRON-	PRP
40119	984	40	by	by	IN
40119	984	41	the	the	DT
40119	984	42	paper	paper	NN
40119	984	43	,	,	,
40119	984	44	and	and	CC
40119	984	45	the	the	DT
40119	984	46	sensation	sensation	NN
40119	984	47	of	of	IN
40119	984	48	the	the	DT
40119	984	49	complementary	complementary	JJ
40119	984	50	colour	colour	NN
40119	984	51	consequently	consequently	RB
40119	984	52	predominates	predominate	VBZ
40119	984	53	;	;	:
40119	984	54	hence	hence	RB
40119	984	55	the	the	DT
40119	984	56	greenish	greenish	JJ
40119	984	57	-	-	HYPH
40119	984	58	blue	blue	JJ
40119	984	59	ghost	ghost	NN
40119	984	60	,	,	,
40119	984	61	which	which	WDT
40119	984	62	is	be	VBZ
40119	984	63	called	call	VBN
40119	984	64	the	the	DT
40119	984	65	negative	negative	JJ
40119	984	66	after	after	IN
40119	984	67	-	-	HYPH
40119	984	68	image	image	NN
40119	984	69	of	of	IN
40119	984	70	the	the	DT
40119	984	71	wafer	wafer	NN
40119	984	72	.	.	.
40119	985	1	The	the	DT
40119	985	2	new	new	JJ
40119	985	3	experiments	experiment	NNS
40119	985	4	show	show	VBP
40119	985	5	that	that	IN
40119	985	6	,	,	,
40119	985	7	if	if	IN
40119	985	8	a	a	DT
40119	985	9	certain	certain	JJ
40119	985	10	condition	condition	NN
40119	985	11	is	be	VBZ
40119	985	12	fulfilled	fulfil	VBN
40119	985	13	,	,	,
40119	985	14	the	the	DT
40119	985	15	usual	usual	JJ
40119	985	16	prolonged	prolong	VBN
40119	985	17	stare	stare	NN
40119	985	18	becomes	become	VBZ
40119	985	19	unnecessary	unnecessary	JJ
40119	985	20	,	,	,
40119	985	21	a	a	DT
40119	985	22	momentary	momentary	JJ
40119	985	23	glance	glance	NN
40119	985	24	sufficing	suffice	VBG
40119	985	25	to	to	TO
40119	985	26	produce	produce	VB
40119	985	27	a	a	DT
40119	985	28	strong	strong	JJ
40119	985	29	but	but	CC
40119	985	30	fugitive	fugitive	JJ
40119	985	31	after	after	IN
40119	985	32	-	-	HYPH
40119	985	33	image	image	NN
40119	985	34	.	.	.
40119	986	1	The	the	DT
40119	986	2	condition	condition	NN
40119	986	3	is	be	VBZ
40119	986	4	that	that	IN
40119	986	5	the	the	DT
40119	986	6	part	part	NN
40119	986	7	of	of	IN
40119	986	8	the	the	DT
40119	986	9	retina	retina	NNP
40119	986	10	where	where	WRB
40119	986	11	the	the	DT
40119	986	12	image	image	NN
40119	986	13	is	be	VBZ
40119	986	14	to	to	TO
40119	986	15	be	be	VB
40119	986	16	formed	form	VBN
40119	986	17	,	,	,
40119	986	18	shall	shall	MD
40119	986	19	have	have	VB
40119	986	20	been	be	VBN
40119	986	21	darkened	darken	VBN
40119	986	22	immediately	immediately	RB
40119	986	23	before	before	IN
40119	986	24	excitation	excitation	NN
40119	986	25	by	by	IN
40119	986	26	the	the	DT
40119	986	27	bright	bright	JJ
40119	986	28	object	object	NN
40119	986	29	.	.	.
40119	987	1	The	the	DT
40119	987	2	retinal	retinal	JJ
40119	987	3	nerves	nerve	NNS
40119	987	4	,	,	,
40119	987	5	when	when	WRB
40119	987	6	in	in	IN
40119	987	7	darkness	darkness	NN
40119	987	8	,	,	,
40119	987	9	rapidly	rapidly	RB
40119	987	10	acquire	acquire	VBP
40119	987	11	a	a	DT
40119	987	12	state	state	NN
40119	987	13	of	of	IN
40119	987	14	sensitiveness	sensitiveness	NN
40119	987	15	far	far	RB
40119	987	16	exceeding	exceed	VBG
40119	987	17	the	the	DT
40119	987	18	normal	normal	JJ
40119	987	19	average	average	NN
40119	987	20	in	in	IN
40119	987	21	the	the	DT
40119	987	22	light	light	NN
40119	987	23	,	,	,
40119	987	24	but	but	CC
40119	987	25	quickly	quickly	RB
40119	987	26	diminishing	diminish	VBG
40119	987	27	again	again	RB
40119	987	28	under	under	IN
40119	987	29	the	the	DT
40119	987	30	influence	influence	NN
40119	987	31	of	of	IN
40119	987	32	illumination	illumination	NN
40119	987	33	.	.	.
40119	988	1	This	this	DT
40119	988	2	peculiar	peculiar	JJ
40119	988	3	sensitiveness	sensitiveness	NN
40119	988	4	may	may	MD
40119	988	5	,	,	,
40119	988	6	indeed	indeed	RB
40119	988	7	,	,	,
40119	988	8	be	be	VB
40119	988	9	both	both	DT
40119	988	10	gained	gain	VBN
40119	988	11	and	and	CC
40119	988	12	lost	lose	VBN
40119	988	13	in	in	IN
40119	988	14	a	a	DT
40119	988	15	small	small	JJ
40119	988	16	fraction	fraction	NN
40119	988	17	of	of	IN
40119	988	18	a	a	DT
40119	988	19	second	second	JJ
40119	988	20	,	,	,
40119	988	21	and	and	CC
40119	988	22	is	be	VBZ
40119	988	23	therefore	therefore	RB
40119	988	24	very	very	RB
40119	988	25	favourable	favourable	JJ
40119	988	26	for	for	IN
40119	988	27	the	the	DT
40119	988	28	rapid	rapid	JJ
40119	988	29	generation	generation	NN
40119	988	30	of	of	IN
40119	988	31	negative	negative	JJ
40119	988	32	after	after	NN
40119	988	33	-	-	HYPH
40119	988	34	images	image	NNS
40119	988	35	.	.	.
40119	989	1	Once	once	RB
40119	989	2	more	more	JJR
40119	989	3	making	make	VBG
40119	989	4	use	use	NN
40119	989	5	of	of	IN
40119	989	6	the	the	DT
40119	989	7	black	black	JJ
40119	989	8	and	and	CC
40119	989	9	white	white	JJ
40119	989	10	screens	screen	NNS
40119	989	11	depicted	depict	VBN
40119	989	12	in	in	IN
40119	989	13	Fig	Fig	NNP
40119	989	14	.	.	.
40119	990	1	46	46	CD
40119	990	2	,	,	,
40119	990	3	let	let	VB
40119	990	4	the	the	DT
40119	990	5	black	black	JJ
40119	990	6	screen	screen	NN
40119	990	7	first	first	RB
40119	990	8	cover	cover	VBP
40119	990	9	the	the	DT
40119	990	10	paper	paper	NN
40119	990	11	upon	upon	IN
40119	990	12	which	which	WDT
40119	990	13	the	the	DT
40119	990	14	wafer	wafer	NN
40119	990	15	is	be	VBZ
40119	990	16	lying	lie	VBG
40119	990	17	;	;	:
40119	990	18	this	this	DT
40119	990	19	will	will	MD
40119	990	20	darken	darken	VB
40119	990	21	a	a	DT
40119	990	22	portion	portion	NN
40119	990	23	of	of	IN
40119	990	24	the	the	DT
40119	990	25	retina	retina	NNP
40119	990	26	,	,	,
40119	990	27	and	and	CC
40119	990	28	render	render	VB
40119	990	29	it	-PRON-	PRP
40119	990	30	sensitive	sensitive	JJ
40119	990	31	.	.	.
40119	991	1	Then	then	RB
40119	991	2	let	let	VB
40119	991	3	the	the	DT
40119	991	4	screens	screen	NNS
40119	991	5	be	be	VB
40119	991	6	quickly	quickly	RB
40119	991	7	moved	move	VBN
40119	991	8	sideways	sideways	RB
40119	991	9	,	,	,
40119	991	10	so	so	IN
40119	991	11	that	that	IN
40119	991	12	the	the	DT
40119	991	13	wafer	wafer	NN
40119	991	14	,	,	,
40119	991	15	after	after	IN
40119	991	16	having	have	VBG
40119	991	17	been	be	VBN
40119	991	18	seen	see	VBN
40119	991	19	for	for	IN
40119	991	20	a	a	DT
40119	991	21	moment	moment	NN
40119	991	22	through	through	IN
40119	991	23	the	the	DT
40119	991	24	opening	opening	NN
40119	991	25	,	,	,
40119	991	26	may	may	MD
40119	991	27	be	be	VB
40119	991	28	immediately	immediately	RB
40119	991	29	covered	cover	VBN
40119	991	30	by	by	IN
40119	991	31	the	the	DT
40119	991	32	white	white	JJ
40119	991	33	screen	screen	NN
40119	991	34	.	.	.
40119	992	1	A	a	DT
40119	992	2	bright	bright	JJ
40119	992	3	but	but	CC
40119	992	4	evanescent	evanescent	JJ
40119	992	5	greenish	greenish	NN
40119	992	6	-	-	HYPH
40119	992	7	blue	blue	JJ
40119	992	8	ghost	ghost	NN
40119	992	9	will	will	MD
40119	992	10	succeed	succeed	VB
40119	992	11	the	the	DT
40119	992	12	red	red	JJ
40119	992	13	impression	impression	NN
40119	992	14	.	.	.
40119	993	1	But	but	CC
40119	993	2	the	the	DT
40119	993	3	most	most	RBS
40119	993	4	curious	curious	JJ
40119	993	5	thing	thing	NN
40119	993	6	is	be	VBZ
40119	993	7	that	that	IN
40119	993	8	if	if	IN
40119	993	9	the	the	DT
40119	993	10	illumination	illumination	NN
40119	993	11	is	be	VBZ
40119	993	12	strong	strong	JJ
40119	993	13	,	,	,
40119	993	14	and	and	CC
40119	993	15	the	the	DT
40119	993	16	screens	screen	NNS
40119	993	17	are	be	VBP
40119	993	18	moved	move	VBN
40119	993	19	at	at	IN
40119	993	20	the	the	DT
40119	993	21	proper	proper	JJ
40119	993	22	speed	speed	NN
40119	993	23	,	,	,
40119	993	24	no	no	DT
40119	993	25	trace	trace	NN
40119	993	26	of	of	IN
40119	993	27	red	red	NN
40119	993	28	will	will	MD
40119	993	29	be	be	VB
40119	993	30	seen	see	VBN
40119	993	31	at	at	RB
40119	993	32	all	all	RB
40119	993	33	;	;	:
40119	993	34	it	-PRON-	PRP
40119	993	35	will	will	MD
40119	993	36	appear	appear	VB
40119	993	37	exactly	exactly	RB
40119	993	38	as	as	IN
40119	993	39	if	if	IN
40119	993	40	the	the	DT
40119	993	41	actual	actual	JJ
40119	993	42	colour	colour	NN
40119	993	43	of	of	IN
40119	993	44	the	the	DT
40119	993	45	wafer	wafer	NN
40119	993	46	seen	see	VBN
40119	993	47	through	through	IN
40119	993	48	the	the	DT
40119	993	49	gap	gap	NN
40119	993	50	were	be	VBD
40119	993	51	greenish	greenish	NN
40119	993	52	-	-	HYPH
40119	993	53	blue	blue	JJ
40119	993	54	.	.	.
40119	994	1	I	-PRON-	PRP
40119	994	2	am	be	VBP
40119	994	3	informed	inform	VBN
40119	994	4	that	that	IN
40119	994	5	analogous	analogous	JJ
40119	994	6	phenomena	phenomenon	NNS
40119	994	7	have	have	VBP
40119	994	8	been	be	VBN
40119	994	9	observed	observe	VBN
40119	994	10	in	in	IN
40119	994	11	other	other	JJ
40119	994	12	branches	branch	NNS
40119	994	13	of	of	IN
40119	994	14	physiology	physiology	NN
40119	994	15	;	;	:
40119	994	16	a	a	DT
40119	994	17	well	well	RB
40119	994	18	-	-	HYPH
40119	994	19	defined	define	VBN
40119	994	20	reaction	reaction	NN
40119	994	21	sometimes	sometimes	RB
40119	994	22	occurs	occur	VBZ
40119	994	23	when	when	WRB
40119	994	24	no	no	DT
40119	994	25	direct	direct	JJ
40119	994	26	evidence	evidence	NN
40119	994	27	can	can	MD
40119	994	28	be	be	VB
40119	994	29	detected	detect	VBN
40119	994	30	of	of	IN
40119	994	31	the	the	DT
40119	994	32	existence	existence	NN
40119	994	33	of	of	IN
40119	994	34	the	the	DT
40119	994	35	excitation	excitation	NN
40119	994	36	to	to	TO
40119	994	37	which	which	WDT
40119	994	38	the	the	DT
40119	994	39	reaction	reaction	NN
40119	994	40	must	must	MD
40119	994	41	be	be	VB
40119	994	42	due	due	JJ
40119	994	43	.	.	.
40119	995	1	As	as	IN
40119	995	2	in	in	IN
40119	995	3	the	the	DT
40119	995	4	former	former	JJ
40119	995	5	experiments	experiment	NNS
40119	995	6	,	,	,
40119	995	7	the	the	DT
40119	995	8	effect	effect	NN
40119	995	9	may	may	MD
40119	995	10	be	be	VB
40119	995	11	shown	show	VBN
40119	995	12	continuously	continuously	RB
40119	995	13	by	by	IN
40119	995	14	means	mean	NNS
40119	995	15	of	of	IN
40119	995	16	a	a	DT
40119	995	17	rotating	rotate	VBG
40119	995	18	disk	disk	NN
40119	995	19	with	with	IN
40119	995	20	an	an	DT
40119	995	21	open	open	JJ
40119	995	22	sector	sector	NN
40119	995	23	.	.	.
40119	996	1	The	the	DT
40119	996	2	annexed	annex	VBN
40119	996	3	diagram	diagram	NN
40119	996	4	(	(	-LRB-
40119	996	5	Fig	fig	NN
40119	996	6	.	.	.
40119	997	1	50	50	CD
40119	997	2	)	)	-RRB-
40119	997	3	indicates	indicate	VBZ
40119	997	4	a	a	DT
40119	997	5	convenient	convenient	JJ
40119	997	6	apparatus	apparatus	NN
40119	997	7	for	for	IN
40119	997	8	the	the	DT
40119	997	9	purpose	purpose	NN
40119	997	10	.	.	.
40119	998	1	The	the	DT
40119	998	2	disk	disk	NN
40119	998	3	is	be	VBZ
40119	998	4	made	make	VBN
40119	998	5	of	of	IN
40119	998	6	thin	thin	JJ
40119	998	7	metal	metal	NN
40119	998	8	,	,	,
40119	998	9	and	and	CC
40119	998	10	properly	properly	RB
40119	998	11	balanced	balanced	JJ
40119	998	12	;	;	:
40119	998	13	the	the	DT
40119	998	14	dark	dark	JJ
40119	998	15	portion	portion	NN
40119	998	16	of	of	IN
40119	998	17	the	the	DT
40119	998	18	surface	surface	NN
40119	998	19	is	be	VBZ
40119	998	20	covered	cover	VBN
40119	998	21	with	with	IN
40119	998	22	black	black	JJ
40119	998	23	velvet	velvet	NNS
40119	998	24	,	,	,
40119	998	25	and	and	CC
40119	998	26	the	the	DT
40119	998	27	light	light	JJ
40119	998	28	portion	portion	NN
40119	998	29	with	with	IN
40119	998	30	unglazed	unglazed	JJ
40119	998	31	grey	grey	NN
40119	998	32	or	or	CC
40119	998	33	buff	buff	NNP
40119	998	34	paper	paper	NN
40119	998	35	.	.	.
40119	999	1	It	-PRON-	PRP
40119	999	2	should	should	MD
40119	999	3	turn	turn	VB
40119	999	4	some	some	DT
40119	999	5	six	six	CD
40119	999	6	or	or	CC
40119	999	7	eight	eight	CD
40119	999	8	times	time	NNS
40119	999	9	in	in	IN
40119	999	10	a	a	DT
40119	999	11	second	second	JJ
40119	999	12	,	,	,
40119	999	13	while	while	IN
40119	999	14	its	-PRON-	PRP$
40119	999	15	front	front	NN
40119	999	16	is	be	VBZ
40119	999	17	well	well	RB
40119	999	18	illuminated	illuminate	VBN
40119	999	19	either	either	CC
40119	999	20	by	by	IN
40119	999	21	bright	bright	JJ
40119	999	22	diffused	diffuse	VBN
40119	999	23	daylight	daylight	NN
40119	999	24	or	or	CC
40119	999	25	by	by	IN
40119	999	26	a	a	DT
40119	999	27	powerful	powerful	JJ
40119	999	28	lamp	lamp	NN
40119	999	29	.	.	.
40119	1000	1	A	a	DT
40119	1000	2	red	red	JJ
40119	1000	3	card	card	NN
40119	1000	4	placed	place	VBN
40119	1000	5	behind	behind	IN
40119	1000	6	the	the	DT
40119	1000	7	rotating	rotating	NN
40119	1000	8	disk	disk	NN
40119	1000	9	is	be	VBZ
40119	1000	10	made	make	VBN
40119	1000	11	to	to	TO
40119	1000	12	appear	appear	VB
40119	1000	13	green	green	JJ
40119	1000	14	,	,	,
40119	1000	15	a	a	DT
40119	1000	16	green	green	JJ
40119	1000	17	card	card	NN
40119	1000	18	pink	pink	NN
40119	1000	19	,	,	,
40119	1000	20	and	and	CC
40119	1000	21	a	a	DT
40119	1000	22	blue	blue	JJ
40119	1000	23	one	one	CD
40119	1000	24	yellow	yellow	NN
40119	1000	25	,	,	,
40119	1000	26	while	while	IN
40119	1000	27	a	a	DT
40119	1000	28	black	black	JJ
40119	1000	29	patch	patch	NN
40119	1000	30	painted	paint	VBN
40119	1000	31	upon	upon	IN
40119	1000	32	a	a	DT
40119	1000	33	white	white	JJ
40119	1000	34	ground	ground	NN
40119	1000	35	appears	appear	VBZ
40119	1000	36	lighter	light	JJR
40119	1000	37	than	than	IN
40119	1000	38	the	the	DT
40119	1000	39	ground	ground	NN
40119	1000	40	itself	-PRON-	PRP
40119	1000	41	.	.	.
40119	1001	1	I	-PRON-	PRP
40119	1001	2	have	have	VBP
40119	1001	3	prepared	prepare	VBN
40119	1001	4	some	some	DT
40119	1001	5	designs	design	NNS
40119	1001	6	which	which	WDT
40119	1001	7	demonstrate	demonstrate	VBP
40119	1001	8	the	the	DT
40119	1001	9	phenomenon	phenomenon	NN
40119	1001	10	in	in	IN
40119	1001	11	a	a	DT
40119	1001	12	very	very	RB
40119	1001	13	striking	striking	JJ
40119	1001	14	manner	manner	NN
40119	1001	15	.	.	.
40119	1002	1	One	one	CD
40119	1002	2	of	of	IN
40119	1002	3	these	these	DT
40119	1002	4	is	be	VBZ
40119	1002	5	a	a	DT
40119	1002	6	picture	picture	NN
40119	1002	7	of	of	IN
40119	1002	8	a	a	DT
40119	1002	9	lady	lady	NN
40119	1002	10	with	with	IN
40119	1002	11	indigo	indigo	RB
40119	1002	12	-	-	HYPH
40119	1002	13	blue	blue	JJ
40119	1002	14	hair	hair	NN
40119	1002	15	,	,	,
40119	1002	16	an	an	DT
40119	1002	17	emerald	emerald	NN
40119	1002	18	-	-	HYPH
40119	1002	19	green	green	JJ
40119	1002	20	face	face	NN
40119	1002	21	,	,	,
40119	1002	22	and	and	CC
40119	1002	23	a	a	DT
40119	1002	24	scarlet	scarlet	JJ
40119	1002	25	gown	gown	NN
40119	1002	26	,	,	,
40119	1002	27	who	who	WP
40119	1002	28	is	be	VBZ
40119	1002	29	represented	represent	VBN
40119	1002	30	as	as	IN
40119	1002	31	admiring	admire	VBG
40119	1002	32	a	a	DT
40119	1002	33	violet	violet	NN
40119	1002	34	sunflower	sunflower	NN
40119	1002	35	with	with	IN
40119	1002	36	purple	purple	JJ
40119	1002	37	leaves	leave	NNS
40119	1002	38	.	.	.
40119	1003	1	Seen	see	VBN
40119	1003	2	through	through	IN
40119	1003	3	the	the	DT
40119	1003	4	disk	disk	NN
40119	1003	5	,	,	,
40119	1003	6	the	the	DT
40119	1003	7	lady	lady	NN
40119	1003	8	's	's	POS
40119	1003	9	tresses	tress	NNS
40119	1003	10	appear	appear	VBP
40119	1003	11	flaxen	flaxen	JJ
40119	1003	12	,	,	,
40119	1003	13	her	-PRON-	PRP$
40119	1003	14	complexion	complexion	NN
40119	1003	15	a	a	DT
40119	1003	16	delicate	delicate	JJ
40119	1003	17	pink	pink	NN
40119	1003	18	,	,	,
40119	1003	19	and	and	CC
40119	1003	20	her	-PRON-	PRP$
40119	1003	21	dress	dress	VB
40119	1003	22	a	a	DT
40119	1003	23	light	light	JJ
40119	1003	24	peacock	peacock	NN
40119	1003	25	-	-	HYPH
40119	1003	26	blue	blue	JJ
40119	1003	27	;	;	:
40119	1003	28	the	the	DT
40119	1003	29	petals	petal	NNS
40119	1003	30	of	of	IN
40119	1003	31	the	the	DT
40119	1003	32	sunflower	sunflower	NN
40119	1003	33	also	also	RB
40119	1003	34	become	become	VBP
40119	1003	35	yellow	yellow	JJ
40119	1003	36	,	,	,
40119	1003	37	and	and	CC
40119	1003	38	its	-PRON-	PRP$
40119	1003	39	foliage	foliage	NN
40119	1003	40	green	green	NN
40119	1003	41	.	.	.
40119	1004	1	Other	other	JJ
40119	1004	2	designs	design	NNS
40119	1004	3	show	show	VBP
40119	1004	4	equally	equally	RB
40119	1004	5	remarkable	remarkable	JJ
40119	1004	6	transformations	transformation	NNS
40119	1004	7	of	of	IN
40119	1004	8	colour	colour	NN
40119	1004	9	.	.	.
40119	1005	1	[	[	-LRB-
40119	1005	2	Illustration	illustration	NN
40119	1005	3	:	:	:
40119	1005	4	_	_	NNP
40119	1005	5	Fig	Fig	NNP
40119	1005	6	.	.	.
40119	1006	1	50.--Disk	50.--disk	CD
40119	1006	2	for	for	IN
40119	1006	3	transforming	transform	VBG
40119	1006	4	Colours	Colours	NNPS
40119	1006	5	.	.	.
40119	1006	6	_	_	NNP
40119	1006	7	]	]	-RRB-
40119	1006	8	I	-PRON-	PRP
40119	1006	9	have	have	VBP
40119	1006	10	mentioned	mention	VBN
40119	1006	11	only	only	RB
40119	1006	12	a	a	DT
40119	1006	13	few	few	JJ
40119	1006	14	among	among	IN
40119	1006	15	many	many	JJ
40119	1006	16	curious	curious	JJ
40119	1006	17	phenomena	phenomenon	NNS
40119	1006	18	which	which	WDT
40119	1006	19	have	have	VBP
40119	1006	20	presented	present	VBN
40119	1006	21	themselves	-PRON-	PRP
40119	1006	22	in	in	IN
40119	1006	23	the	the	DT
40119	1006	24	course	course	NN
40119	1006	25	of	of	IN
40119	1006	26	these	these	DT
40119	1006	27	investigations	investigation	NNS
40119	1006	28	.	.	.
40119	1007	1	It	-PRON-	PRP
40119	1007	2	is	be	VBZ
40119	1007	3	not	not	RB
40119	1007	4	improbable	improbable	JJ
40119	1007	5	that	that	IN
40119	1007	6	a	a	DT
40119	1007	7	careful	careful	JJ
40119	1007	8	study	study	NN
40119	1007	9	of	of	IN
40119	1007	10	the	the	DT
40119	1007	11	subjective	subjective	JJ
40119	1007	12	effects	effect	NNS
40119	1007	13	produced	produce	VBN
40119	1007	14	by	by	IN
40119	1007	15	intermittent	intermittent	JJ
40119	1007	16	illumination	illumination	NN
40119	1007	17	would	would	MD
40119	1007	18	lead	lead	VB
40119	1007	19	to	to	IN
40119	1007	20	results	result	NNS
40119	1007	21	tending	tend	VBG
40119	1007	22	to	to	TO
40119	1007	23	clear	clear	VB
40119	1007	24	up	up	RP
40119	1007	25	several	several	JJ
40119	1007	26	doubtful	doubtful	JJ
40119	1007	27	points	point	NNS
40119	1007	28	in	in	IN
40119	1007	29	the	the	DT
40119	1007	30	theory	theory	NN
40119	1007	31	of	of	IN
40119	1007	32	colour	colour	NN
40119	1007	33	vision	vision	NN
40119	1007	34	.	.	.
40119	1008	1	William	William	NNP
40119	1008	2	Byles	Byles	NNP
40119	1008	3	&	&	CC
40119	1008	4	Sons	Sons	NNPS
40119	1008	5	,	,	,
40119	1008	6	Printers	Printers	NNPS
40119	1008	7	,	,	,
40119	1008	8	129	129	CD
40119	1008	9	,	,	,
40119	1008	10	Fleet	Fleet	NNP
40119	1008	11	Street	Street	NNP
40119	1008	12	,	,	,
40119	1008	13	London	London	NNP
40119	1008	14	,	,	,
40119	1008	15	and	and	CC
40119	1008	16	Bradford	Bradford	NNP
40119	1008	17	.	.	.
40119	1009	1	FOOTNOTES	footnote	NNS
40119	1009	2	:	:	:
40119	1009	3	[	[	-LRB-
40119	1009	4	1	1	CD
40119	1009	5	]	]	-RRB-
40119	1009	6	It	-PRON-	PRP
40119	1009	7	should	should	MD
40119	1009	8	be	be	VB
40119	1009	9	clearly	clearly	RB
40119	1009	10	understood	understand	VBN
40119	1009	11	that	that	IN
40119	1009	12	the	the	DT
40119	1009	13	length	length	NN
40119	1009	14	of	of	IN
40119	1009	15	each	each	DT
40119	1009	16	wave	wave	NN
40119	1009	17	of	of	IN
40119	1009	18	a	a	DT
40119	1009	19	series	series	NN
40119	1009	20	is	be	VBZ
40119	1009	21	measured	measure	VBN
40119	1009	22	by	by	IN
40119	1009	23	the	the	DT
40119	1009	24	distance	distance	NN
40119	1009	25	between	between	IN
40119	1009	26	the	the	DT
40119	1009	27	crests	crest	NNS
40119	1009	28	of	of	IN
40119	1009	29	two	two	CD
40119	1009	30	successive	successive	JJ
40119	1009	31	waves	wave	NNS
40119	1009	32	.	.	.
40119	1010	1	The	the	DT
40119	1010	2	length	length	NN
40119	1010	3	of	of	IN
40119	1010	4	water	water	NN
40119	1010	5	-	-	HYPH
40119	1010	6	waves	wave	NNS
40119	1010	7	which	which	WDT
40119	1010	8	break	break	VBP
40119	1010	9	upon	upon	IN
40119	1010	10	a	a	DT
40119	1010	11	sea	sea	NN
40119	1010	12	shore	shore	NN
40119	1010	13	is	be	VBZ
40119	1010	14	not	not	RB
40119	1010	15	the	the	DT
40119	1010	16	length	length	NN
40119	1010	17	along	along	IN
40119	1010	18	the	the	DT
40119	1010	19	crest	crest	NN
40119	1010	20	of	of	IN
40119	1010	21	a	a	DT
40119	1010	22	single	single	JJ
40119	1010	23	wave	wave	NN
40119	1010	24	measured	measure	VBN
40119	1010	25	in	in	IN
40119	1010	26	a	a	DT
40119	1010	27	direction	direction	NN
40119	1010	28	parallel	parallel	JJ
40119	1010	29	to	to	IN
40119	1010	30	the	the	DT
40119	1010	31	shore	shore	NN
40119	1010	32	,	,	,
40119	1010	33	as	as	IN
40119	1010	34	the	the	DT
40119	1010	35	uninitiated	uninitiated	JJ
40119	1010	36	are	be	VBP
40119	1010	37	apt	apt	JJ
40119	1010	38	to	to	TO
40119	1010	39	suppose	suppose	VB
40119	1010	40	.	.	.
40119	1011	1	The	the	DT
40119	1011	2	true	true	JJ
40119	1011	3	wave	wave	NN
40119	1011	4	-	-	HYPH
40119	1011	5	length	length	NN
40119	1011	6	,	,	,
40119	1011	7	or	or	CC
40119	1011	8	distance	distance	NN
40119	1011	9	from	from	IN
40119	1011	10	crest	crest	NN
40119	1011	11	to	to	IN
40119	1011	12	crest	crest	NN
40119	1011	13	of	of	IN
40119	1011	14	successive	successive	JJ
40119	1011	15	waves	wave	NNS
40119	1011	16	,	,	,
40119	1011	17	can	can	MD
40119	1011	18	be	be	VB
40119	1011	19	well	well	RB
40119	1011	20	observed	observe	VBN
40119	1011	21	from	from	IN
40119	1011	22	the	the	DT
40119	1011	23	top	top	NN
40119	1011	24	of	of	IN
40119	1011	25	a	a	DT
40119	1011	26	cliff	cliff	NN
40119	1011	27	.	.	.
40119	1012	1	[	[	-LRB-
40119	1012	2	2	2	LS
40119	1012	3	]	]	-RRB-
40119	1012	4	In	in	IN
40119	1012	5	practice	practice	NN
40119	1012	6	,	,	,
40119	1012	7	wave	wave	NN
40119	1012	8	-	-	HYPH
40119	1012	9	lengths	length	NNS
40119	1012	10	are	be	VBP
40119	1012	11	expressed	express	VBN
40119	1012	12	in	in	IN
40119	1012	13	ten	ten	CD
40119	1012	14	-	-	HYPH
40119	1012	15	millionths	millionth	NNS
40119	1012	16	of	of	IN
40119	1012	17	a	a	DT
40119	1012	18	millimetre	millimetre	NN
40119	1012	19	.	.	.
40119	1013	1	The	the	DT
40119	1013	2	wave	wave	NN
40119	1013	3	-	-	HYPH
40119	1013	4	lengths	length	NNS
40119	1013	5	of	of	IN
40119	1013	6	the	the	DT
40119	1013	7	lines	line	NNS
40119	1013	8	A	A	NNP
40119	1013	9	and	and	CC
40119	1013	10	H	h	NN
40119	1013	11	of	of	IN
40119	1013	12	the	the	DT
40119	1013	13	solar	solar	JJ
40119	1013	14	spectrum	spectrum	NN
40119	1013	15	,	,	,
40119	1013	16	which	which	WDT
40119	1013	17	approximately	approximately	RB
40119	1013	18	coincide	coincide	VBP
40119	1013	19	with	with	IN
40119	1013	20	the	the	DT
40119	1013	21	limits	limit	NNS
40119	1013	22	of	of	IN
40119	1013	23	visibility	visibility	NN
40119	1013	24	,	,	,
40119	1013	25	are	be	VBP
40119	1013	26	7594	7594	CD
40119	1013	27	and	and	CC
40119	1013	28	3968	3968	CD
40119	1013	29	ten	ten	CD
40119	1013	30	-	-	HYPH
40119	1013	31	millionths	millionth	NNS
40119	1013	32	of	of	IN
40119	1013	33	a	a	DT
40119	1013	34	millimetre	millimetre	NN
40119	1013	35	.	.	.
40119	1014	1	[	[	-LRB-
40119	1014	2	3	3	LS
40119	1014	3	]	]	-RRB-
40119	1014	4	Possibly	possibly	RB
40119	1014	5	the	the	DT
40119	1014	6	human	human	JJ
40119	1014	7	eye	eye	NN
40119	1014	8	is	be	VBZ
40119	1014	9	at	at	IN
40119	1014	10	present	present	JJ
40119	1014	11	in	in	IN
40119	1014	12	process	process	NN
40119	1014	13	of	of	IN
40119	1014	14	transformation	transformation	NN
40119	1014	15	from	from	IN
40119	1014	16	an	an	DT
40119	1014	17	inferior	inferior	JJ
40119	1014	18	type	type	NN
40119	1014	19	to	to	IN
40119	1014	20	a	a	DT
40119	1014	21	different	different	JJ
40119	1014	22	and	and	CC
40119	1014	23	more	more	RBR
40119	1014	24	perfect	perfect	JJ
40119	1014	25	one	one	CD
40119	1014	26	.	.	.
40119	1015	1	[	[	-LRB-
40119	1015	2	4	4	CD
40119	1015	3	]	]	-RRB-
40119	1015	4	It	-PRON-	PRP
40119	1015	5	is	be	VBZ
40119	1015	6	sometimes	sometimes	RB
40119	1015	7	necessary	necessary	JJ
40119	1015	8	to	to	TO
40119	1015	9	place	place	VB
40119	1015	10	the	the	DT
40119	1015	11	lens	lens	NN
40119	1015	12	I	-PRON-	PRP
40119	1015	13	on	on	IN
40119	1015	14	the	the	DT
40119	1015	15	other	other	JJ
40119	1015	16	side	side	NN
40119	1015	17	of	of	IN
40119	1015	18	K.	K.	NNP
40119	1015	19	[	[	-LRB-
40119	1015	20	5	5	CD
40119	1015	21	]	]	-RRB-
40119	1015	22	It	-PRON-	PRP
40119	1015	23	is	be	VBZ
40119	1015	24	easy	easy	JJ
40119	1015	25	to	to	TO
40119	1015	26	find	find	VB
40119	1015	27	specimens	specimen	NNS
40119	1015	28	of	of	IN
40119	1015	29	red	red	JJ
40119	1015	30	and	and	CC
40119	1015	31	green	green	JJ
40119	1015	32	glass	glass	NN
40119	1015	33	suitable	suitable	JJ
40119	1015	34	for	for	IN
40119	1015	35	this	this	DT
40119	1015	36	experiment	experiment	NN
40119	1015	37	.	.	.
40119	1016	1	The	the	DT
40119	1016	2	proper	proper	JJ
40119	1016	3	kind	kind	NN
40119	1016	4	of	of	IN
40119	1016	5	purple	purple	NN
40119	1016	6	is	be	VBZ
40119	1016	7	not	not	RB
40119	1016	8	so	so	RB
40119	1016	9	commonly	commonly	RB
40119	1016	10	met	meet	VBN
40119	1016	11	with	with	IN
40119	1016	12	.	.	.
40119	1017	1	[	[	-LRB-
40119	1017	2	6	6	CD
40119	1017	3	]	]	-RRB-
40119	1017	4	Some	some	DT
40119	1017	5	recent	recent	JJ
40119	1017	6	experiments	experiment	NNS
40119	1017	7	on	on	IN
40119	1017	8	artificial	artificial	JJ
40119	1017	9	colour	colour	NN
40119	1017	10	-	-	HYPH
40119	1017	11	blindness	blindness	NN
40119	1017	12	(	(	-LRB-
40119	1017	13	Proc	Proc	NNP
40119	1017	14	.	.	.
40119	1018	1	Roy	Roy	NNP
40119	1018	2	.	.	.
40119	1019	1	Soc	Soc	NNP
40119	1019	2	.	.	NNP
40119	1019	3	,	,	,
40119	1019	4	Feb.	February	NNP
40119	1019	5	,	,	,
40119	1019	6	1898	1898	CD
40119	1019	7	)	)	-RRB-
40119	1019	8	have	have	VBP
40119	1019	9	led	lead	VBN
40119	1019	10	Mr.	Mr.	NNP
40119	1019	11	Burch	Burch	NNP
40119	1019	12	to	to	IN
40119	1019	13	the	the	DT
40119	1019	14	conclusion	conclusion	NN
40119	1019	15	that	that	IN
40119	1019	16	there	there	EX
40119	1019	17	are	be	VBP
40119	1019	18	really	really	RB
40119	1019	19	_	_	NNP
40119	1019	20	four	four	CD
40119	1019	21	_	_	NNP
40119	1019	22	fundamental	fundamental	JJ
40119	1019	23	colour	colour	NN
40119	1019	24	-	-	HYPH
40119	1019	25	sensations	sensation	NNS
40119	1019	26	--	--	:
40119	1019	27	a	a	DT
40119	1019	28	red	red	NN
40119	1019	29	,	,	,
40119	1019	30	a	a	DT
40119	1019	31	green	green	NN
40119	1019	32	,	,	,
40119	1019	33	a	a	DT
40119	1019	34	blue	blue	NN
40119	1019	35	,	,	,
40119	1019	36	and	and	CC
40119	1019	37	a	a	DT
40119	1019	38	violet	violet	NN
40119	1019	39	.	.	.
40119	1020	1	His	-PRON-	PRP$
40119	1020	2	results	result	NNS
40119	1020	3	are	be	VBP
40119	1020	4	,	,	,
40119	1020	5	however	however	RB
40119	1020	6	,	,	,
40119	1020	7	thought	think	VBD
40119	1020	8	to	to	TO
40119	1020	9	be	be	VB
40119	1020	10	capable	capable	JJ
40119	1020	11	of	of	IN
40119	1020	12	a	a	DT
40119	1020	13	different	different	JJ
40119	1020	14	interpretation	interpretation	NN
40119	1020	15	.	.	.
40119	1021	1	[	[	-LRB-
40119	1021	2	7	7	CD
40119	1021	3	]	]	-RRB-
40119	1021	4	Or	or	CC
40119	1021	5	through	through	IN
40119	1021	6	several	several	JJ
40119	1021	7	pieces	piece	NNS
40119	1021	8	superposed	superpose	VBN
40119	1021	9	.	.	.
40119	1022	1	[	[	-LRB-
40119	1022	2	8	8	LS
40119	1022	3	]	]	-RRB-
40119	1022	4	A	a	DT
40119	1022	5	violet	violet	NN
40119	1022	6	-	-	HYPH
40119	1022	7	coloured	coloured	JJ
40119	1022	8	haze	haze	NN
40119	1022	9	may	may	MD
40119	1022	10	sometimes	sometimes	RB
40119	1022	11	be	be	VB
40119	1022	12	actually	actually	RB
40119	1022	13	seen	see	VBN
40119	1022	14	around	around	IN
40119	1022	15	the	the	DT
40119	1022	16	opal	opal	JJ
40119	1022	17	globes	globe	NNS
40119	1022	18	of	of	IN
40119	1022	19	the	the	DT
40119	1022	20	electric	electric	JJ
40119	1022	21	lamps	lamp	NNS
40119	1022	22	in	in	IN
40119	1022	23	the	the	DT
40119	1022	24	streets	street	NNS
40119	1022	25	.	.	.
40119	1023	1	[	[	-LRB-
40119	1023	2	9	9	CD
40119	1023	3	]	]	-RRB-
40119	1023	4	A	a	DT
40119	1023	5	"	"	``
40119	1023	6	focus	focus	NN
40119	1023	7	"	"	''
40119	1023	8	electric	electric	JJ
40119	1023	9	lamp	lamp	NN
40119	1023	10	was	be	VBD
40119	1023	11	used	use	VBN
40119	1023	12	in	in	IN
40119	1023	13	the	the	DT
40119	1023	14	lantern	lantern	NN
40119	1023	15	.	.	.
40119	1024	1	[	[	-LRB-
40119	1024	2	10	10	CD
40119	1024	3	]	]	-RRB-
40119	1024	4	Proc	Proc	NNP
40119	1024	5	.	.	.
40119	1025	1	Roy	Roy	NNP
40119	1025	2	.	.	.
40119	1026	1	Soc	Soc	NNP
40119	1026	2	.	.	NNP
40119	1026	3	,	,	,
40119	1026	4	Jan.	January	NNP
40119	1026	5	,	,	,
40119	1026	6	1899	1899	CD
40119	1026	7	.	.	.
40119	1027	1	[	[	-LRB-
40119	1027	2	11	11	CD
40119	1027	3	]	]	-RRB-
40119	1027	4	After	after	IN
40119	1027	5	a	a	DT
40119	1027	6	few	few	JJ
40119	1027	7	seconds	second	NNS
40119	1027	8	'	'	POS
40119	1027	9	observation	observation	NN
40119	1027	10	the	the	DT
40119	1027	11	greenish	greenish	NN
40119	1027	12	-	-	HYPH
40119	1027	13	blue	blue	JJ
40119	1027	14	colour	colour	NN
40119	1027	15	often	often	RB
40119	1027	16	becomes	become	VBZ
40119	1027	17	much	much	RB
40119	1027	18	more	more	RBR
40119	1027	19	intense	intense	JJ
40119	1027	20	,	,	,
40119	1027	21	but	but	CC
40119	1027	22	this	this	DT
40119	1027	23	is	be	VBZ
40119	1027	24	an	an	DT
40119	1027	25	effect	effect	NN
40119	1027	26	of	of	IN
40119	1027	27	fatigue	fatigue	NN
40119	1027	28	,	,	,
40119	1027	29	with	with	IN
40119	1027	30	which	which	WDT
40119	1027	31	we	-PRON-	PRP
40119	1027	32	are	be	VBP
40119	1027	33	not	not	RB
40119	1027	34	at	at	IN
40119	1027	35	present	present	JJ
40119	1027	36	concerned	concern	VBN
40119	1027	37	.	.	.
40119	1028	1	[	[	-LRB-
40119	1028	2	12	12	CD
40119	1028	3	]	]	-RRB-
40119	1028	4	See	see	VB
40119	1028	5	_	_	NNP
40119	1028	6	Nature	Nature	NNP
40119	1028	7	_	_	NNP
40119	1028	8	,	,	,
40119	1028	9	vol	vol	NNP
40119	1028	10	.	.	.
40119	1029	1	55	55	CD
40119	1029	2	,	,	,
40119	1029	3	p.	p.	NN
40119	1029	4	367	367	CD
40119	1029	5	(	(	-LRB-
40119	1029	6	Feb.	February	NNP
40119	1029	7	18th	18th	NN
40119	1029	8	,	,	,
40119	1029	9	1897	1897	CD
40119	1029	10	)	)	-RRB-
40119	1029	11	.	.	.
40119	1030	1	[	[	-LRB-
40119	1030	2	13	13	CD
40119	1030	3	]	]	-RRB-
40119	1030	4	Or	or	CC
40119	1030	5	,	,	,
40119	1030	6	for	for	IN
40119	1030	7	best	good	JJS
40119	1030	8	results	result	NNS
40119	1030	9	,	,	,
40119	1030	10	use	use	VB
40119	1030	11	a	a	DT
40119	1030	12	balanced	balanced	JJ
40119	1030	13	metal	metal	NN
40119	1030	14	disk	disk	NN
40119	1030	15	covered	cover	VBN
40119	1030	16	with	with	IN
40119	1030	17	black	black	JJ
40119	1030	18	velvet	velvet	NN
40119	1030	19	and	and	CC
40119	1030	20	white	white	JJ
40119	1030	21	paper	paper	NN
40119	1030	22	.	.	.