. American engineer and railroad journal . ograph for testing the sensitive plates and adjusting theselective color screens. When such preliminary adjustmentshad been correctly made the process was almost as simple andtrustworthy as the ordinary negative process. By a modifica-tion of the process, introducing further complication, colorprints were made on glass or paper ; but the comparative sim-plicity of the plan of superposing images commended it to sci-entists and was more convincing to the general public. A New Sound Steamer.—The accompanying illustration,for which we are indebted to the
. American engineer and railroad journal . ograph for testing the sensitive plates and adjusting theselective color screens. When such preliminary adjustmentshad been correctly made the process was almost as simple andtrustworthy as the ordinary negative process. By a modifica-tion of the process, introducing further complication, colorprints were made on glass or paper ; but the comparative sim-plicity of the plan of superposing images commended it to sci-entists and was more convincing to the general public. A New Sound Steamer.—The accompanying illustration,for which we are indebted to the SfaboarJ, shows a new steamerfor Long Island Sound, of a class which is gradually replacingthe side-wheel steamers which have for so many years been theprevailing type in the waters around New York. The new steamer, which is named Hartford, has been latelycompleted by Neafie & Levy, in Philadelphia, for the route be-tween New York and Hartford, Conn. She is an iron boat,251 ft. long, 40 ft. beam and 13 ft. depth of hold. The passen-. STEAMBOAT HARTFORD, .LONG: ISLAND.,SOUND. ger accommodations are excellent, the main saloon being onthe upper deck and having 44 statfe-rooms. There is room for alarge amount of freight on the lower deck. There is a full elec-tric light plant, including a search-light on the hull is divided by water-tight bulkheads into a number ofcompartments. The Harfford \^ propelled by twin ?r-ew=, carH d-ivrn by anindependent compound engine with C)linJeis 20 in. and 40 diameter and 2S in. stroke. Steam is furnished by fourtubular boilers S ft. diameter and 14 ft. long. Although of comparatively light draft, as required for herroute up the Connecticut River, she has shown very goodspeed, making 15 knots an hour in regular work. Vol. LXVI. No. <, 1 ENGINEERING JOURNAL. 389 TH^ RAILROAD^^o Engineering JOURNAL. (CSTABLISaCD III 1832.) THE OLDEST RAILROAD PAPER IN THE WORLD. Monthly at No. 47 Street, New York. M. N. FOR
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
