Scientific American Magazine

Water Table Pumped Lower and Lower, the Desert is Creeping into Rich Central Valley; Two Great Dams, Long Canals, Will Supply Needed Water

Buried Metal Capsule Contains Sample of Our Civilization, Some of Our Products, Millions of Words in Print, For Future Archeologists

What Causes Our Brain Waves and What Do They Signify? Hypotheses, Have They Something to Do With Vision?, A Beginning Has Been Made

Odd Rock Curiosities that Intrigue Collectors, Formed in the Rock Where They are Found, A Peculiar Chemical Reaction is Their Origin

At Their Triennial Meeting the World's Astronomers Witnessed the Amazing New Technique of Observing Solar Prominences and Corona Without an Eclipse

Mechanical Cotton Pickers Coming, to Solve Planter's Biggest Problem, Complex Factors, Adoption Very Slow, No "Economic Revolution"

Science Still Remains Uncertain What the Cosmic Rays Arc, Where They Come from, How They Were Formed and When