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 IMAGE EVALUATION 
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 1WIISTIR,N.Y. MStO 
 (71*) •73-4903 
 
 
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 Series 
 (Monographs) 
 
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 microfich'es 
 (monographjes) 
 
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 Canadian Inatituta for Hittorlcal1Microra|>roductiona / Inttitut Canadian da microraproductlona hittoriquaa 
 
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 TMhnical and Bibliographic NotM / NolM MChniqufs at MMiofraphiquai 
 
 Tha Imtituta hat attamptad to obtain tha bast original 
 copy availabia for filming. Faatiira* of this copy which 
 may ba MMiographi^lly uniqua. wrtiich may altar any 
 of tha imagat in ttia raproduction, or which may 
 •ignificantly change tha usual mathod of filming, ara 
 chacfcad balow. 
 
 L'Institift a microfilm* la maillaur axamplaira qu'il 
 lui a ^ possiM* da ta proeurar. Las details da cat 
 . ^Kamplairff qui sont pautiltra uniquas du point da «ua 
 bibllographiqika, qui pauvant modif iar una imaga 
 raproduita. ou qui pauvant axigar'una modif icatiori 
 dans la mMmda normala da f ihnaga sont indiquts 
 ei-dassous. 
 
 □ 
 
 Colourad covers/ ' 
 
 Couvartura da coulaur 
 
 Coviws d am agid/ 
 Couvartura andommagto 
 
 Cdirars rastorad and/or laminatadV ' 
 Couvartura rastaurte at/ou palliculta 
 
 □ CohNirad pagn/ 
 Pagas da coulaur 
 
 PagM andommagaas 
 
 D 
 
 □ Pagn rostorad and/or laminatad/ 
 Pkgn rfstaurtes at/ou paHicultes 
 
 □ Covar titia missing/ 
 La 
 
 titra A couvartura manqua 
 
 PagM discolourad. stainad or fokad/ 
 Pagas dteolorlas. tachatias ou piqutas 
 
 D 
 
 Colourad maps/ 
 
 Cartas gfographiquas an coulaur 
 
 n 
 
 Phis d4taeh4as 
 
 
 □ CokNirad ink (i.a. othar thanjihia or Mack)/ 
 Encra da coulaur (i.a. autra qualilaua ou noira) 
 
 □ 
 
 Colourad platas and/or illustrations/ 
 Planchas at/ou illustrations an coulaur 
 
 Bound with othar matarial/ 
 RaM avac d'autras documents 
 
 □ Tight binding may causa shadows or distortion 
 along interior margin/ 
 
 La raliura sarrte paut causar da I'ombra ou da la 
 distorsion la long da la marga intiriaura 
 
 □ Blank laavas addad dttring restoration may appear, 
 within tha text. .Whenever possible, these have 
 bean omitted from filming/ 
 II se paut que certainas pagas blanches ajouttes 
 lors d'une restauration apparaissant dans la taxia, 
 mais, lorsqua cela Atait possible, ces pages n'ont 
 pasMfilmtes. 
 
 0Showth;ough/ 
 Trihsparence 
 
 □ Quality of print varies/ 
 Qualiti inigala de I'impression 
 
 
 Continuous pagination/ ' . 
 Pagination continue 
 
 Includes index(es)/ 
 Comprend un (das) index 
 
 Title on header ulk»f% from:/ 
 La titra de I'en-tlte provienf: 
 
 DC 
 
 page of issue/ 
 
 da titra da |a livraison 
 
 I I Caption of issue/ 
 
 D 
 
 Titre de depart da la livraison 
 
 Masthead/ 
 
 GAnirkiue (p^iodiques) de la livraison 
 
 n 
 
 Additional commaots:/ 
 Commentaires supplimentaires: 
 
 Thii item is f ihned at tlie reduction ratio checked bekwv/ . 
 Ca document est film* au taux da reduction indiqu* ci-dassous. 
 
 V 
 
 Tor 
 
 u* 
 
 lix 
 
 ■«■ 
 
 22X 
 
 12X 
 
 IfX 
 
 20X 
 
 »X 
 
 2ix 
 
 32X. 
 
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 :X- 
 
 th* copy fllm«(d tHiir* hat b««n raproduMd thankt 
 to th«.g«nfroitity of: 
 
 " tftraryoftlMNptiofMl 
 
 ; Arehhri« of CMMMla - . ' ' ' 
 
 L'«««mptoir« fHniA fut roproduiCf^ 
 g«n*rMM d«: / H 
 
 La bibliothkKM das Archivas 
 £> nationalai dM Canada 
 
 ■&- 
 
 icd A la 
 
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 Tha imafaa appaaring hara ara tHa 
 poatibia apnaidaring tha condition 
 of tha original copy and In kaaping 
 fllniing apntraet apadflcatlona. 
 
 quality 
 lagibillty 
 
 " tha ■ 
 
 jS^i^j^ 
 
 Original eoplaa In'printad popar aevata ara fNmad 
 baglnnkig with tha front 9»im and anding on . 
 tha laat paga writh a printad or Nhiatratad Impraa* 
 aion. or tho back covor whon approprlato. All ^^ 
 othar original copiaa ara fHmad boglnnlng on ihi 
 f Irtt pago with a printad w IHuatratad hnprai- 
 aion. and andlpg on tho laat paga wltl|.ar printad/ 
 or IHuatratad Inipraaalon. 
 
 / 
 
 / 
 
 -^ Tha^l^ ra^ardad ff^a Oh aach mieroflcho 
 ahaN contain tha cV'^bol ^^ (moaning 'XON- 
 TINU^D"). or th^ syhiboi ▼ (moaning "END"), 
 wfiichavdr apfMlaa. 
 
 ■/ / 
 7MafNi. pknaa. charta. ate., may ba Wmad at 
 ^ diffarant raduetion ratioa. Thoaa too larga to ba 
 /Ontlraly toieludad in ono ifxpoaura ara fllmad 
 / baglnning toi tha uppar laft hand comor.Joft to 
 '± right and top to bottom, aa many framai aa 
 . raqulrad. Tha following diagrama iliuatrata tha 
 mathodi ■• 
 
 Laa Imagat.aulvantaa ont AtA raproduitat avac la 
 :piua grand aoin. eompta tanu da la condition at 
 da la nattatA da raaamplaira filmA. at •n 
 eonformitA fvie laa condKlona du contrat da 
 
 
 
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 Laa asamplalraa origlnaux dont la couvartura •n 
 paplar aat ImprimAa aont filmAs mn commancant 
 par la pramiar plat at an tarminant toit par la 
 damlAra paga qui compbrta una amprainta 
 dfmpraaaioh ou dlliuatration. aoit par la saeend 
 plat, aalon la caa. Toua laa autras axamplairas 
 origlnaux aont fNmAa an commandant par la 
 p ramlAra ppgo quf comporta una amprainta 
 dimpraaaion ou dlNuatrwtion at an tarminant par 
 la damlAra paga qui comporta una talla 
 amprainta. 
 
 Un daa aymbolaa auivanta apparattra aur la -' 
 damlAra imaga da chaqua mieroficha. talon la 
 cat: la lymbola — ^ aignifla "A SUIVRE". la 
 aymbola ▼ aignifia "FIN". 
 
 Laa cartaa. planchaa. ttblaaua. ate. pauvant Atra 
 filmAa A daa taux da rAduction diff Arantt. ' 
 Loraqua la document oat trap grand pour Atra 
 raproduit an un aaul cllchA. 11 att f llmA A partir 
 da I'angla aupAriaur gaucha. da gaucha A droita. 
 at da haut an bat. an praiilnt la nombra 
 d'Imagat nAcattaira. Laa diagrammat tuivantt 
 muatrant la mAtholl. 
 
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 E. t-DARTNELL, 
 
 Builcting Supplies, <&c. 
 
 180 St. Jamies Street, - - MONTREAL, Can. 
 
 BELL TELEPHONE MAIN 2382-. 
 A. 6. C CODE, 4th EDITION, USED. 
 
 M»'..- 
 
 FINE BUILDINe STONES 
 SEAM-FACE ISRANITE 
 PRESSED BRICK 
 
 ORNAMENTAL TERRA COTTA 
 ENAMELLED BUjLDING BRICK 
 COMMON BRICK 
 
 FLOOR AND ROOF TILES 
 
 '&c., &c., &G. 
 
 ftTENT GLASS WALL TILES 
 MARBLE 
 
 R. I.W. DAMP RESISTING PAINT 
 WIRE LATHING 
 GRINDSTONES 
 TRANSLUCENT FABRIC 
 GRINDSTONES for Pulp Grinding 
 
 '%: 
 
 THE 
 
 PORTABLE BRAVITY CONCIiEn MIXER. 
 
 (SE£ INSIDC.> 
 
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THE PORTABLE iBRAVITy CONCRETE MIXER 
 
 ' WelKlit about. SOO pountfA : No'^powcr used ; No moviii|.|NUts. 
 
 FRANK B. GILBRETH. 
 
 PATENTEE, 'Sola Owner Canadian IpaUnt I 
 
 Protcclcd b> Patent* -In a^ Ihc l^cadlRK CounlrlM. 
 
 BOSTON. NEW YORK. LONDON. 
 
 \ 
 
 PATENTen IN CANADA IQtW. 
 
 E. F. DAR17NELL, leo st. j.m^ st.. 
 
 MONTREAL 
 
 SALES AGENT FOR CANADA. 
 
 t'tit (C. 2<.) slKwiii- IV.rlahW I1atf«»nii set up, willi Iron SoiW n«»x firdjiiR a Mixtr i.»M in 
 Mdnjrth, and Concrete fallinjr into a Derrick Hox. \ 
 'n>c Box. h«.l(lin»,(.nf cuhic yard, is filled with broken stone. ct\ncnt and santl placttl in layers 
 
 aiiU ilien lipped uito the t;l..p!K;r oi tile .Mixer. Average time of niixin^a cubic yard when scalel^ 
 
 is tippcdt— 2.J seconds. 
 
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 Mixir, 
 can Fk! 
 
 CutlC. 241 showuijT the Ikrrickin llu- fortun.uiid moving llu- I'ortahlc IMatl".»nii, O.iunu 
 Watir Harril amlall. Wliire more than one derrick is einploved on a joh \\w platlnrni. .S:c. 
 passed fmnione to tin- <.ther and placed anywhere wi^ii.n reach ».f the derrick arms" • 
 
 ^ 'IJc wtmk' platform, \vei«:lilnjr complete with Mixer ahunt 4<hx> founds, can Ik« /)ickc(r tip 
 ^iMxlily hi- the derrick, a- chain jroinjr thnmjrh tlit- middle of platform at top an(\ hein-' attached 
 nnderneath to one of the principal beams*; this enables the Mixer and flatfcirm to lie swnn^f wherewr 
 desired with bnt a fe\>: ininntes interrnption of its work. ^> — 
 
 , / This I\.rtable iMatfonn is of «:reat -nse wlieri- large niasses .)f Concrete arc Uinu lai.l, as the 
 
 Pfalforiu can Ik- moved fnmi place to place at a nwrtt-k^ri^st and more s,KedilN than concrete can' 
 l»e handled. • , -^ ' 
 
 • . ' •- • ': 
 
 THE ONLY POWER EHPLOYED IN MIXING IS QRAVITAl'ION. 
 
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 CIliBRETH'S 
 
 IWepoFer and Feedep. 
 
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 . B. GILBRETH. ^ Inventor. 
 
 l^teiitM in nil l^etidlnu Countrlen. 
 
 For use with Concrete Mixers, supplying the aggregates ( Stone, Sand, 
 Cement and Water )\ in absolutely correct proportions, withoftt the use of a 
 measuring box. This\ Feeder in connection with W F^ortable Gravity 
 
 Concrete Mixer, 
 
 i\ ^*"» turn out 66 So loo yai-ds of concrete per hotff, 
 
 continuously, provided Jhe bins are kept sufficiently fullof materials, the force 
 of, gravity doing all the rest, i.e., measuring and delivering the materials' 
 accurately and without iiterruption from clogging, arching, or any other cause. 
 The apparatus is easily oArated by one unskilled workman. ^ 
 
 The output is limited only by tlie capacity of the type of Mixer used in 
 
 connection with it. If nfecessary the Portable Gravity Concrote 
 
 Mixer can be furnished ^f an extra size to give \a capacity up to, and over 
 
 \ 
 200 • yards per h^in-. 
 
 PARtlCULARS ON APPLICATION. 
 
 E. F. 
 
 180 5t James Street 
 
 \ 
 
 DARTNELI., 
 
 - MONTREAL: 
 
 AGENT FOR CANADA. 
 
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