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Maps, plates, charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The following diagrams illustrate the method: Les cartes, planches, tableaux, etc., peuvent Atre filmte A des taux de rMuction diff Arents. Lorsque le document est trop grand pour Atre reproduit en un seul cliche, il est filmi A partir de I'angle supArieur gauche, de geuche A droite, et de haut en bas, en prenant le nombre d'images ntcessaire. Les diagrammes suivants illustrent la mAthode. 1 2 3 1 2 3 4 5 6 m rr ^ i^: *rJ m^m ^^ I . ■ • ■ • ^ • • r * « « ■ • • Tr* » - « • I ■■>i I \ .t.aii^ai n V*' I beg to report to you on the examination I bave just, completed ft>r the General Minin<; Association of London, fKlOf^i^ing tO directions '* Irom R. H. Brown, Esq., Manager at the %duey Giijg|^ton. The sample oi Coal forwarded to tne, last (t^onth, wa|^inv^a, V |^i^Jb#xes, et ch^ inches square by 3 feet long, which, cont4iiiedL"^% full \ stioa of the Main Seam 6 feet high, half the length being in each %oicy Pieces were taken throughout, so that a fair average'^ the '^^iftKty of the whole seam might he procured. The Coal arriV^ In etcellent condition after a' long sea ^dftige add ab6ut 50 mites of land ■■^ oarriage, of which 45 were by rail. I obtained the following r^sulit l^^nalysis:— ■■■'•?, ■■ ■ ^COMPOSITIVE OF AVERAGE SAMPLES OF THE WHOLE '^'' SEAM OF COAL. ^/)frp:'' "By Medium CdKiNfJ. By Fast Coking. ^ '^l^turiti .... , , ,.:. 3<04 I Total volatile matters ........ 37.48 ■j' yotatile combustible matter. . .31.14 Coke. 62.52 lit-^ii^ia /easbon .;... 61.50 | . . jt i^sh (reddish brown) 4.32 loo.oo '"*:';'■,■: Av: -• ..I ■•1 U_ [■«*■;:",.('•! t 100.00 1 Theoretical evaporative power. j.gS^^/b. ) j^r. cent .... ....... 6C.82 ^tipal evaporative power. 8 45 lb. By Slow Coking. fi Totaj-voliiitiip!. nifttters . Cokef. • • • • • • ■ • .29.70 ■70.30 100.00 "■(. Theoretical evaporative power. 9.06 lb. Meaijt coke per cent 66.21 8^'\''!''^|ieaiii?theoretical evaporative power 8.49 lb. %i^ ^^ik <^^"t. 432 >!^t!l!^^ilP^^ Sand ai. Peroxide oi Alununa , Sulphate of Ume • Lime ) K5^;iicacid:decided.races.........-;;;ro..3 Manganese, trace. •;; . » Chluj-iJie, traces \°' lOO oo G^S RETURNS, . r M.nmer of Halifax Gas Works, '■ (On samples furnished by me.) Q-,„o cubic teei- Gas (average of 4tc»t*l l ,_ . 'jt „dlcs. '""■"-""« """" "^ , . „„ „,,! known l.ifc'l. f-V""' '" The .letuils ..l,ove give,, explnin ^._^ ,^^__^^^,i,^ „„,, „,. Co. .n.Ueen„e„> fc ..v.. • . ._^^^^ ^^_^„,^^, , „.e, a..a "1- f"'- «<-"" '"■"•*"""° ' """"'"^- r 1, is 1 "U per cent less fln.n vvns (onn.l i.y Jol.nson The amount of ash >s .-J 1 ^^ ^^^^^ ,,_^^^ .„ ,„„« ga.n i„ ,he American Navy na,s ■■ ^^ ^^^^ „„„,., ,„e i„ „,is im,.onant .espect. 11^^^ ^^^^^ ,,, Johnson, l«n.g „„UeHu my analysis >s f" ■„„„«„,.,„ of the .ate o. coking ,,.U against ^^M. In.t as h W • ._^ ^^^^,^^ ^^^^ „„„. H u impossihle to compare elose^ on t ^ ^^^ ^^^^^^ „^, ever t only fom these -"' ; "'^ ^_, ^ ,..,, „. .ha,. Picto» n,.vvsoninl855."thattl,eSy.^e Co ;.^^^^^_ ^^^^^^ ^^^ ,„ C„ai;'a.,a the P-esent y.e of ^^^^^^^^^ ^^^^^^ _^,. ^,,^ ,,„„„ Uepovt of the Geolog.cal Sn ev _^ ^^ ^^^_^^^^,,^^^ ^„,., Coal in this .eport. that t h.s at lus U .___^,„„,. .n.,.s, t... average of five tr.als of the U ^^,_^,^ ,, ,„„, „ i. sta,e,l at 7400 chic leet „e o. a n ^^ ^^^^ ^__^__^^^ ^.^^_^^ ^,,„„ „ .hese a.,.l other Picton Coa s at .^^^^^^^^^^ ^^- ^^_ ._^^ ^_^,,^ ^„,. ,„„ ,,.,,. hei..g from the "toca 1 '"^ • ^^ i„„,„ina.i..g power a"-«geof«.00c..-.^ this gas. howeve,-, an,Uhe p.ese 5^3 \ ■ifa 'f course be nsainst se ;)o\ver, or niimher of pounds of _, ....III wiiKMi slionld he «nii|)<>i:ite«l l»y one pound of coal, 8.49, coMiparc's very t'avouiaWly with the actual power of Hritish Coal:i, as found in the Naw Trials in which I assisted; these were: — • AvL'ia};e of ^7 samples from Wales 9 05 lb. '* 17 " " Newcastle t<-37 Ih. " 2S " " Lancashire 7.94 \U. " 8 " " Scotland 7.70 lb. " S " " Derbyshire 7.5S lb. m This fact alone wouhl always have been significant as indicating that the Sydney Coal shonhl proye a jjjood steam-coal, hut, since hite quality. ' • ' . experiments haye shewn that, when burnt in proper furnaces the f vonr in bituminous coals haye been found to give no smoke, and to have an \ miestW' - evaporative power <;ven superior to th.at of Welsh steam-coals, it is I ..Tpd it now of the hiijhest importance. It is necessary to draw attention in this connection to the resend)lance of the Sydney Coal to those Tobuson biturjiinotis <'o;ds which gave these results, in containing a low pcr- ^^ axxw centJijie of ash. It is stated in the late (xeo. .Stirvev Report on Pictou T\bustU)le Coals that "the very high residts in evaporative power obtained from being the N. of England comIs are scarcily possible with the Pictou coals, as t cokiug these alaio.st invariably (;ontain more ash than those from the north of ^ how- England." Now, I find that the average percentage of ash from 22 meut by analyses by myself and others of good Pictou coals from various . ^ pictou mines is 7.84, fiom 14 analyses of N. of England coals it is 3.77, while "in tbt Sydney Coal gave me oidy a little more than this, viz., 4..'{2. It is a I j^vduc^ proof of its steam producing power being good that, as I mentioned in „-.rkve IT'.*- n>V reitort to the l*royin| >,..., , —1 . .lUl t#li— I.. .— . A__— i III m .■ '^_ ■I ..j&j' ^ ) _^^ Lancashire coals, \ (r which is 1.45, so that i... .J with these from ubrond, some oi purposes. The sulphur perhaps Hppeurs larger ui uu^w... Sy(httiy Coal than it re:illy is, because in some parts very thin scales of pyrites are spread out over surfaces ?o as to strike the eye, whereas in many coals the pyrites is mainly in streaks and bands, of notable thickness occasionally, but often so thin as to pass with little obser- vation, or so ditfui^ed through the coal as scarcely to be noticed. The economic weight or t,nace occupied on stowage is good. The ash has about the average com[K)Rition of that of bituminous coals. I conclude that the Sydney Coal fully merits the very high esteem in which it has been so long held for domestic use ; I am inclined to think its sulphur ha? been over-rated by repute, and I hope I have made it appear that it deserves to be considered a good Steam Coal. I am. Gentlemen, i . , •••.", • i.. • , ■ ' .' ' Your obedient servaht, • " •• . '(r-J '•(Signed) HKNKYHOW, "-■;'-'• ' ' ' ,.-.:,: Professor of Chemistry. To MkSsjUS. CUNAUI) AND MORUOW, . ^ .■;..,; ;:,j j - •. ;« Agents to the General Mining Associatiun^ . ./ -•'^.i-r. ^ ^ :'' , Halifax. .... ,. „, ..,.. ,>,;,-.;, .^.? ..,/;•;..;> '■■\ - . • '_ ' . ■ .■ . .< - ■ ..;:!;-;.,. -.'.S ,•• ?■;;•-'/: J. . ' . • - • ■ ■..: : • ^ . • ■i.\ •■:: .■■ 1 >y .;■' :■ - ^^ ' :^^'v .. ■ y •...; •..' .^: ' ■ . ■; ' ■ 1, • - ff ■•. < • >.'■'' ' .' •■ ('' 'i.'; . . •' .^^,:"'."' ' -■;.-■ ■. , :_.:■,■> ': ,t-fv '■'..■' f '■■: '■' ■ :i,- •■, •• ." . ■ •: .r': '( . - -J- , .« «.' ■•""*5 , : -11 !■;::. .?«a*. ■.Fw*:*.!-':"^''' -^f ..; , — - ■*■ v\ itam