Scientific American Magazine

ORDER X--PRIMATES SUBORDER III--ANTHROPOIDEA SECTION B--CATARRHINI FAMILY II--SIMIIDAE and FAMILY IV-HOMINIDAE

Co-operation Brings Results, Better Crops Are Produced, New Industries Born, Old Ones Benefited, Ultimate Consumer Reaps a Harvest

Artificial Disintegration Leads to Knowledge of How Atoms Are Made, A Round-up of Terms

Wheeler Dam, Completed Next Year, Will Produce, Power Has Navigation Lock, Operated With Other Dams, Will Control Tennessee River

Under the Microscope Perfect Specimens Photomicrographs of Almost Any Chemical

Every Three Years an International Body of Astronomers Meets, Mainly to Coordinate and Facilitate Cooperation of National Groups

Silly Stories and Pictures to the Contrary Notwithstanding, Quite Unthinkable, Often Laughable Nonsense Fancy Yarns

Gage Blocks, Master Gage Blocks, Optical Flats, The Master Controls

The Commonest Mistake, What the Real Method of the Scientist Demands, Hard-boiled, Cold, Rigorous Logic, Two and Two are Not Nine

Scenes in a U.S. Mint

Supply Five To Ten Milliamperes, Operate Relays, Easy To Make, Low In Cost