Scientific American Magazine

Suggested Developments, To Detect, Defeat Warplanes, Submarines, Humanitarian Aspects, Physical Principles Which Inventors Must Follow

Forest Managers Beginning to Use a Method of Long-range Climatic Prediction, Based on the Study of Fossil Pollen Grains with Microscopes

Not Sun-Spots but Gases Erupted from the Sun and Traveling to Earth at Times of Solar Turmoil, Sun-Spots May but Need Not Accompany This

Unsurpassed In Many Uses, Especially Chemical Equipment, Has Passivity of Glass, Strength of Steel, Hard Tools Made by Powder Metallurgy

Science May Know When it Learns What Life Is, No Surgeon Ever Brought a Dead Patient Back to Life, We Do Not Die All Over, All at Once

Striking Natural Phenomena, The Aurora, Zodiacal Light, and Bizarre Types of Lunar Halos

To Reveal Presence of Foreign Objects, Some Impurities, Also Condition of Products, Fruits, Fluoroscopic Inspection Widely Used

The Brasch and Lange Apparatus, Old-timer in Splitting the Atomic Nucleus, Faces a Revival with Improvements in Generating Artificial Lightning

Extensive Studies of Present Highways, Visibility, Grades, Curves, Traffic Quantity, Quality, Speed, Data Aid Future Planning

Built, With Its 36-Inch Telescope, by Amateur Astronomers of Indianapolis, Financed by Local Enlightenment, Presented to Science

Insects, Number One Forest Enemy, Make Ghosts of a Vast Number of Trees, Bark Beetle Heads the List, Other Insects, Man Combat the Pest