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MARINE Light Fuel Consumption on the Aragon, Officials of the Dry Dock Engine Works, Detroit, as well as the Cleveland owners of the new freight steamer Aragon, are undoubtedly very much pleased with the results of an engineering test made on that steamer recently, while bound down the lakes with a car zo of grain. The fuel consumption during eight hours, at 11.3 miles speed, was only 1.63 pounds per hour. This is a better showing than has previously been made in the several scientific trials of lake steamers conducted by experts. The Detroit builders are especially pleased with it on account of the Aragon being fitted with Howden hot draft apph- ances. They claim also that the test is what might be termed a com- mercial test, as the ship was boarded at Detroit after having made a long run from the head of Lake Superior. Nothiag was done in the way of cleaning up or preparing for the trial. It thus shows, they say, what the boat is doing in actual service, the intention being to secure data regarding the engines that might be depended upon in the building of other engines of about the same kind. The boat is a very full model, as she was built to carry the limit of cargo on dimensions of Welland canal locks. Her bottom and bilges are sheathed with oak and this is also a partial drawback as regards speed. H.P. Spring BO Wee fe cies ' # Se Ee we eee mae cee ee oem a ae a ' ce +e oe mee 6051 \ 7 ~ 4 \ Se Le 4 ' ait 's Ny = - -7 + Sec 4 a pee M E.P. 57 ws ie 7 129387 pa ' pea. ; .. ¢ ene a ae ae oS eee ee Pe ~~ See le Int. Spring4o0 i menace ~~ Sic Pon ce te; , --- - \ 22 Rate s at o / \ ee 1 S See N # / \ "2-7 MEP 200 L No wee See Zé pas Wel 7a SK 2 \ ~ CE I a tS a eA a ll ie I 3 IS SE, 2 oda vs rs. NX 1 SS \ L.P. Spring !/O 7 77585 oP Lea \ i ae \ SS Bo 1 nee 1 ene si eer 7.2 9 / \ aan = ae £ \ ~, / ' ag eS / \ . oe aM Rees i 2 in es ae id x 12464 7S nee iN 7 \ ' 4 _=-_-- She SS ease ewe eK ») Se OS SS -- = S 3 2S ee ae ra, \ . : She Airy Pump Spring 20 ' ' \ Tt ' . M.E.P 5.25 XN xs ss ee Geter we Seles = Barc. Soa = pe ota SY ON ee say ony cer nner cai RAMOM DECKING siee os: Aa et ce Nr ie. 150 pounds. WACU os 6.2 ee A SF eee RE ee 22 inches. MU INICLGTAS, Hox hs Ace eho. ay. co weigh aie ss oe 91 Heettembehiirh: pressure... ie.» sya ulin ses oe 214 BPE cee EET TNCGIALGs cree. pecns cennspengne SP os 230.9 LA. P., Pe APIesenree og. Pe es. 206.2 SPM eee ei it. ee ee 651 Meira eroterred fol. Ska sero. Ao. ee 23.68 REVIHW. 13 TRIAL, OF STEEL FREIGHT STEAMER ARAGON, Kngine--triple expansion with cylinders 17, 274 and 46 inches by 36 inches stroke. Air pump 24 inches dances by 12 mene stroke, with 12 inches diameter trunk. Boiler--One of cylindrical type, 12 feet 6 inches diameter by 11 feet 6 inches long, allowed 162 pounds. working pressure. Furnaces 44 inches diameter; 5 feet 6 inches grate bars; 40 1-3 square feet grate surface. Total fesine surface, -1,926 square feet. Ratio of heating surface to grate surface, 47.7. < 7 Coe « al Scale 40 tbs. 8.8. Ciagen ug5 Ib Fan--Wheel of 50 inches diameter and 25 feet width. Fan engine, vertical, 6 inches by 6 inches. nee --14 inches diameter by 7 feet long over all. Propeller--Cast iron, four blades, 10 feet 10 inches diameter, 12 feet 6 inches pitch; 40.36 square feet paces area. Load, nettonss 2. Arne ia a. ot eee wee ea 2,500 Draueht; feet amd ances. aie. gr, ere rere 14-7 Steam spressure, pounds... ee pore 150 I. P. receiver pressure, pounds ................ 46 L. P. receiver pressure, pounds................ 4} Vacuum, Mmches. techn ae id ee bichon ene 22 Indicated horse power, H. P.......... ee ee 214 Indicated horse power, I. B............. Ee . 280.9 Indicated horsepower L:: Po Be ee 22 eee 206.1 Indicated horseypower, total ircu sie een: 651 Indicated horse power, air pump............... 6.58 Per cent.air pump of total. <3.) non ene ene 01 Revolutions, mali emg inek ic: eeen ieee 91 Revolutions, fan epgine@nns.:. 200. .s + Bg eel 8b 'Air pressure inches iii. cco eee ee 2 Ratio of horse power to grate surface........... 16 Ratio of heating surface to horse power ........ 3 Duration of trial, hours, minutes........:-..™-: 7-40 Total coal burned, pounds.......-. Fei see howe e 8,156 Coal burned per hour, pounds....-......2...3. 1,064 Coal burned per I. H. P. per hour, pounds ..... 1.63 Speed! of boat, miles! <..i.¢9 1. on sean 11.3 Speed of propeller, miles..........+.......5... 12.9 Slip of propeller, per cent..+.........:......5. 12.5 Temperature of hot well, degrees.............-. 130 Temperature of heater, degrees............+-... 160 Stocks of Grain at Lake Ports. The following table, prepared from reports of the Chicago board of trade, shows the stocks of wheat and corn in store in regular eleva- tors at the principal points of accumulation on the lakes, Sept. 12,1896: Wheat, bushels. Corn, bushels. Clicar0@., tae gan ee ere 13,188,000 4,366,000 Duluth a. Bo eee ec 5,864,000 52,000 Milwaukee -24 aed. Fee ee 396,000 3,000 'Detrcitecs tte see so oeae ee 466,000 14,000 Toledos?,< Pee ase wee eee Pee gol O00 52,000 Boia) ge Fi eee eke eee 1,392,000 380,000 Total 22,023,000 4,867,000 As compared with a week ago, the ee Hewrce io at the sev- eral points named an increase of 350,000 bushels of wheat, and a decrease of 576,000 bushels of corn.