Popular Science (1872-Present Popular Science Publishing Co.) Vol. 124 #2

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Volume 124 Issue 2 - February, 1934. Cover by Edgar Wittmack. "New Discoveries Show How Electricity Governs Our Lives" explains the strange effects of invisible charges in our atmosphere, "If I Were Getting a Patent" warns inexperienced inventors against six common pitfalls, "How the World Machine Works" described by Gaylord Johnson, tells readers how to perform simple tests with every day objects to show the motion of the Earth, more. 8.5-in. x 11.5-in., 116 pages, black and white. Cover price $0.15.