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Scientific American, Vol. 97, No. 20 (November 1907) (1907)

leaf 9

An illustration from Scientific American, Vol. 97, No. 20 (November 1907), 1907, leaf 9
onnecting the crankshaft of reap its reward in earnings and improved service, This will give an idea of the long time during which the engine with the trucks through a system of gears. both freight and passenger. the quarries have been in operation.' The present With this type of the channeler… … about a mile long, THE NEW SUSQUEHANNA BRIDGE. feet from the over the Susque- beds, necessitat- hanna River at Havre de Grace, Md. This bridge was tain portion. The price paid the state for this lease, ing the installation of powerful boom derricks built in fast time, and embodies many interesting…

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