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6 MARINE REVIEW. Coal Movement to Lake Superior. As shown by the following table, coal shipments, hard and soft, to Lake Superior on July 1 were 209,507 tons im excess of shipments on the corresponding date in 1891? 1892. 1891. Actin! casas tes ctvestinei cated 151,495 10,919 INTE ites nets ere ceaaaa ee aikg 401,729 404,698 DIM Chasen ecceresity ocenccer 462,564 390,674 MG ial? Meee eae. o 1,015,788 806,281 The figures are taken from monthly statements of Sault canal traffic and are, of course, entirely reliable. It is unfortu- nate that these statements do not separate hard and soft coal, but it will be readily understood that the bulk of the gain over last year is in soft coal, as Buffalo had shipped on July 1 of this year only 759,931 tons of anthracite coal, against 812,290 tons in 1891. A very heavy movement of coal to the head of the lakes will, no doubt, continue through the season, but shippers are fearing some delay from this time on, on account of the inability of docks to care for the present tonnage. Shipments of soft coal to Lake Michigan are not well advanced and vessel owners are looking for improved freight rates in that trade later on. St. Mary's Falls Canal Traffic in June. Freight passing through the St. Mary's Falls canal during the month of June aggregated 1,671,879 net tons, of which 1,152,249 tons was eastbound and 519,630 tons westbound. The traffic was divided as follows: Eastbound. Westbound. COAG oie nie eile rest van Sods tay Toscan ene 462,564 tons. HN OUTS asics cccuceccsseaece Sentence nes: 746,336 bbls 200 bbls. (GRAIN as ees satieaitosinns sole sorts eant eaten en 5,700 bu. Conn: Pare nes Gaeta HOTS OO but oo ow eiee cc. Wile ate 84 tion cade stieenasc teas tenacc ct SpOOO,Y 2M Dley we Sesiosicle ee Ves Kobinakes ROVE Ge echannecticocuteonnons fa ERY IOS so vetioesottonne (COPPER ccc cccsee sooo eee cseen en' DAO S VONGs se acetone Mianimniactume denon: neresaceeereeass eee res 7,040 tons trombyORC rien cccccee acne ear erace NOG) HOS nodoso6ac MOM pil Ot recsacrcccsscese (cers ieee 1,624 tons. atest Sblteae ioe ecsn sacs tese tae cs ethnics eee 25,813 bbls. und ber ere Reccsctncs Seoeee ec 75,738 M feet ....-..00. Silvers Ore eect cre ence saseunees AOS OMS Scio cee aia: Wirelassitied=tretohitcs sts. 22,238 tons. 46,079 tons. BASSEMQCTAte asec encase esc craeen. te 1,846 2,098 Compound and Triple Expansion Engines, Compound engine was the term given to the engines of two cylinders to which the compounding principle was first applied. When this principle was carried further and an additional cyl- inder used, the combination was called a triple expansion en- gine, the term compound being generally understood as apply- ing to the two-cylinder engine only. As a matter of fact, how- ever, all engines in which the steam is used successively in a number of cylinders are compound engines as distinguished from simple engines in which the whole range of expansion is. accomplished in one cylinder; and we note with interest the use by European writers of the word tri-compound to designate the combination usually referred to upon this side asa triple ex- pansion engine. This usage would give the word bi-compound to a two-cylinder compound engine, and quadri-compound to an engine in which the expansion is divided into four stages. The prefixes must be understood as referring to the stages into which the expansion is divided, and not to the number of cylin- ders, tri-compound, or triple expansion, engines being frequent- ly built with four cylinders.--Power, New York. Canada's Merchant Marine. Again there is a decline reported in Canada's merchant ma- rine. The twenty-fourth annual report of the department of marine, just issued, shows that the total number of vessels re- maining on the register books of the dominion, on Dec. 31, 1891, including old and new vessels, sailing vessels, steamers and barges, was 7,015, measuring 1,005,475 tons, register tonnage, being an increase of twenty-four vessels and a decrease of 19,499 tons register, as compared with 1890. 'The number of steamers on the registry books on the same date was 1,433, with a gross tonnage of 221,679 tons. Assuming the average value to be $30 per ton, the value of the registered tonnage of Canada, on Dec. 31 would be $30, 164,250. The number of new vessels built and registered in the do- minion during the present year was 312, measuring 52,145 tons, register tonnage. Estimating the value of the new tonnage at $45 per ton, it gives a total value of $2,346, 525 for new vessels. The number of tons of new vessels is included in the total reg- ister tonnage of 1,005,475, and in the total value of $30,164,250. Canada owned in 1873, 6,783 vessels of 1,073,718 tons, and as noted on previous occasions the aggregate tonnage of vessels owned in the country has not in any year since that time varied 300,000 tons. tee. : The tonnage of the dominion is divided among the different provinces as follows: aH cee s2 | oa eee | ee earl a @ 2 ae) -- PROVINCES. Se\e8| eae | Ss go a 5 Oo ° $ a S Pe oes | eae a New Brunswick ..........-sececsceescesesececseceeees 969 97 8,913 193,193 Nova SCOttas........0ssecccccesccersecesccereccerreeres 2,778 118} 138,992 441,758 Qe bee 6 cge-2 es eee teats coco nes ee ce ae se renee AOL X87 igi lley 162,330 OlnitanslOee sre nee ST aes soe ecco oe cee 1,345 | 741 | 92,785 138,914 Prince Edward Island.............+.00sseeceeeeee 195 17 4,555 23,316 INMlanmiitio loceaccs scene sete eee eee sees eeee teeter 78 51 0,762 6,197 British Columbia............cccsse-oeesserecereeoees 246 | 142] 21,540 19,767 ANGIE lontcnoc capquocbonsncgence Snoconosconte boot 7,016 | 1,483 | 221,679 | 1,005,475 Tonnage registered in the different ports of Ontario and_ Quebec, where lake vessels are owned, is shown in the follow- ing tables: ap d 6 . © n eS N a tH ae wom q D oS ONTARIO PORTS. 2e | 28 | 8/8 | Be | Bo seg 8s Z Ae ae 3 © B Aral oKv dst O10 Sep secndachonoeoutn co anGeBoo ~ooobASGce Pete iit es cr alt eee ccc 148 Beeville. tssgcte Sic sgsasvesateene eee soa 14 ae 499 |. 862 Brockvillle.s.2..0csers see tee ee 31 28 766 839 Bowannnivallt@escsssnctemetcessebeccee stccs benecs Dive lites Scaeeeee cal iss eee eee 425 Collinge wood:i.. ccsces coc setae eeacee ss 46 44 5,021 3,878 Chippewa. cisicesccentomnd elec suisse cous 3 2 263 103 Cramalies cic susccssonet: esc cceenee Roe ceccncee Qe linea sacccroclk ee nee 278 @hpthiannt 25s ccae sees dacs ee ccen ose te ee eee eee 27 16 1,103 1,663 COPOULE Reais. cosmecs cecenies es asere mise eemen eee: 6 2 51 472 Cornwall oc. occ cksaseeeas cache eee eee 3 2 178 214 Humvees te eases he ee epee a 9 5 63 1,027 DP CSCHOMTOS. sas acsew con eeube tani ae eee ee 7 5 785 784 Guo deriGl ae. 05 as, tre emcee ees cae (ewes og 20 867 1,998 Fara to nee cag ctatrhctesccametuee en ee temel ee 47 32 7,700 6,910 ISCO SCOMG: cancicscoenaeae scaust anes eases eer ee PAU 76 12,505 | 26,090 IMORTISDUGios.5. sextet teen eet 3 1 dd 382 ING AINE: cere verre a essence nn Sop ae amen 8 3 302 922 Owen Sound. 2) tinea ee A ee 32 29 4,838 3,379 Saye dain RS Tee OMe e «Se oe ioe ae ee 196 100 12,143 | 20,529 DEVS as seceieous sane eee cas ce we eae eee A Saal lites eee 323 Prese Ofitat stapes oso ieee: oe cence ee eae 28 14 627 3 158 PortBurwell ceo ee eee ley 6 167 1,411 PorteArthtne tne cere sentem sere se 6 6 382 259 Rort Dover. ae. ste eee Se cepiee are ween ee 17 4 131 ILA Port: Colbome: 3325.5. ee ee 9) 2 95 "597 Pont Mioperitcn.cr mane ese eee oe 64 38 3,031 5,788 Port Rowan a ee ee ee 7 'i 168 | 895 Bort) Stanley seer eer ee ae on 11 9 1,864 1,482 Pictou) .2:.,0¢ eee eee ee 30 9 450 | 2,779 Sarnia... Ce eee ee 24 17 | 7,856 | 6,295 Sici Muriett ar Ae car BOS 15 13oult ene 590 Stes Sr tudeeenete Mitta sickea ace a i Mat Me Porontow itn ie one i conn 142 | 13,057 | 14,58 Wallaceburg. ae 39 21 | 1,458 | 2,506 Whoo. cicaaistiemadnelt anenaicedeeeen eerie ce REA Te 54 26 5,720 5,466 EOLA ia es ais ot eee ee te 1,345 741 92,785 | 138,914 eee QUEBEC PORTS Amherstburg, M. Lee Gicse : Papel i SA eae cele BO | ages ce eee anne | i laa ie eee ea 40 1 709 | 2.490 New Catia) a ee es 139 ae 7a Perce, hice ee ae eb Gees . : One a eee Desai | ats as Cee Sa ee 138 " eas ens See 865 124 21,729 | 79,320 Motalie cee eas aa z ge Hosier nes 1,404 267 | 74,182 | 162,330