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Scientific American, Vol. 91, No. 22 (November 1904) (1904)

leaf 3

An illustration from Scientific American, Vol. 91, No. 22 (November 1904), 1904, leaf 3
ar are dry for the most part, and the excessive wetseason only occurs during a month or so. At Niutsch-wang, on -the north shore of the Gulf of Liao-tung, themean winter temperature is 16 deg. F., and the meanfor the summer, 74.8 deg. The mean annual tempera-ture is 47.1 deg. F. The Russian… … AUTOMATIC STEP-LADDERS. Small inventions are not always the least useful,and a proof of the fact is furnished by the automaticplatform step-ladders recently constructed by M. Bar-din, of Billancourt, Prance. Since its invention inantiquity, the ladder, despite its manifold applicationsand manifold…

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