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Scientific American October 1931 Volume 144 Number 1

1931Features: Ivory - the pearl of the forest - the age-old industry built around the teeth of elephants; Editorials - blindness and false shame - help needed - too fat? - international affairs; Testing the astronomical yardstick - when Eros approaches the earth, Astronomers will study him further; A stone dam greater than Cheops' pyramid - novel methods of construction on World's largest rock-filled dam; Has living matter been produced in the laboratory? - Mexican scientist produces what resembles low forms of life; The volcanic birth of a new island - an eruption in hte bay that was Krakatoa's crater; Mining the sky for scientific knowledge - problems and questions that may be solved by the exploring rocket; Modern 'alchemy' in iron and steel - scientists are making iron almost a noble metal; Preserving newspaper files - tissue coating adds to strength of wood pulp paper; An actor turns inventor - safety oven shelf spells financial success; Practical X-ray crystal analysis in engineering - inner characteristics of materials can now be ascertained; Pre-constructed pip-line hauled out to sea - launching a huge pipe to make an ocean filling station for tankers; Giant Tortoises - they are now being propagated in the U.S.; From the archeologist's notebook - Petra - Chinese pottery dogs - a venus from the sea; Landscaping with fully-grown trees - difficult procedure in moving large trees; On the track of the Mayas - modern Mayas mix Christianity with their old paganism. Back cover features interesting advertisement by Southern California Edison with photo of enormous new transmission tower supplying Los Angeles. Uncommon Auburn Automobile advertisement inside front cover features their Cord Front Drive feature. One inch opening between top of spine and front cover. Average wear and soiling. Unmarked. Book

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