Paris Exposition Notes. Solidification of Hydrogen Gas. THE NEW ASSISTANT COMMISSIONER OF PATENTS. ASSISTANT COMMISSIONER Of PATENTS WALTER H. CHAMBERLIN. Remarkable Metallurgical Experiments. The Rotation of Venus. the time of rotation of Venus to be short. Automobile News. OP .1 1 The Current Supplement. Inventions recently patented 251 Contents. Venus rotation of 250, scientific american, 1900-04-21
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