Scientific American Magazine, Volume 152, Number 2, February 1935
1935112 pages. Features: Use of cemented carbides in industry; The miniature camera; Zeta Aurigae - a close double star; Canalization of the Upper Mississippi River; Archaeologist's notebook; Making your own photomicrographic camera; Rubber plant experiments; Excavations by CWA workers under the Tennessee Valley Authority bring to light the contents of 40 Indian villages and mounds; Preventing fires at sea; The versatile papaya; Is the growing death rate from heart disease and cancer real or only apparent?; Progress in this age of science; Interesting brief note and photo of what may be the first grease cartridges and grease gun; and more. Coverfold partly open. Average wear. Unmarked. A worthy vintage copy. Magazine
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