. Bulletin - United States National Museum. rmerly of theScience Museum, South Kensing-ton, London, and with the firm ofRobert Stephenson & Hawthorns,Ltd., that the three crank rings(USNM 180030-c) received atthat tim^e are actually relics of theAmerica. -igure 7.—Combining difFerent methods of trans-portation was common practice in the early daysof railroading. The Delaware and Hudson as lateas 1 866, for example, carried coal by rail fromthe mines of Scranton and Carbondale, Pa., to itscanal at Honesdale, Pa., and thence on bargesby way of Port Jervis, Ellenville, and Rondout,N. Y., to New Y
. Bulletin - United States National Museum. rmerly of theScience Museum, South Kensing-ton, London, and with the firm ofRobert Stephenson & Hawthorns,Ltd., that the three crank rings(USNM 180030-c) received atthat tim^e are actually relics of theAmerica. -igure 7.—Combining difFerent methods of trans-portation was common practice in the early daysof railroading. The Delaware and Hudson as lateas 1 866, for example, carried coal by rail fromthe mines of Scranton and Carbondale, Pa., to itscanal at Honesdale, Pa., and thence on bargesby way of Port Jervis, Ellenville, and Rondout,N. Y., to New York City. On some early railroads,horses drew the cars on level stretches, but inhilly country where grades were very steep, grav-ity roads with switchbacks and inclined planeswere often used. The inclined plane consisted ofa set of rails over which units of the train couldbe raised or lowered by mechanical , water power, or a stationary steam en-gine, often located at the top of the slope, wereamong the sources of Figure 8.—Cylinder of America, inNotional Museum. Figure 9.—Piston from cylinder, atabout twice the scale of figure 8.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
