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Scientific American, Vol. 97, No. 4 (July 1907) (1907)

leaf 5

An illustration from Scientific American, Vol. 97, No. 4 (July 1907), 1907, leaf 5
ewhat similar cab signal system, belonging to the to a condition of great fatigue. Nevertheless he Sir William Perkin, founder of the coal-tar indus- Safety Signal Company, of 407 Drexel Building, Phila- ascended the mountain a second time. try, died last week at the age of sixty-nine years. Few… … coil springs, this position being the one in which they Among other fossils in the collection are the bones Photo by Yander Weyde. will operate the cab signals, so that in case of any of ungulates and rodents. It is the first time that the failure on the part of the line signals, the cab signals…

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