Scientific American Magazine

Individual Transportation, Has Transformed The National Scene, Steady Decline In Price, Safety A Paramount Issue In Design

Modern Liners, Efficient, Comfortable, Safe, Speedy, Great Recent Improvements, Scientific Design And Equipment, Air Competition?

What Might be Seen from a Planet Conveniently Placed Near the Companion of Sirius, Perfect Tests of General Relativity that are Unavailable

Past, Present, Future, Air Mail Reaches All Five Continents, World-Wide Development, Catapults May Become Important

Railroads Alert to Problems, Look Ahead, Build for Efficiency, Safety, Comfort, Speed, Constant Research Meets Modern Demands

The Fossil Ape Newly Found in South Africa is Probably Closer to Man than the Living Apes

Greatest Need is for "Freeways," What is Being Done in Foreign Countries, The Inter-American Highway, Much Work Remains

Early Systems "Just Grew," Co-ordination Resulted in Progress, Comfort and Convenience for Passengers, What of the Next Five Years?

One Superstition that Turned out to be a Fact, Science Went to Work, Maggots Went Out, Allantoin Came in, Followed by Urea, Now We Understand

Mobile Homes for Everybody, What They Offer, Designs, Construction, Booming Trailer Industry, How Long Will it Boom?

Hunger and Thirst, Fatigue and Pain, Cold and Warmth, Smell, Sight and Color Blindness, Hearing, Our "Intelligence Department"

Flood Control and Wildlife Management Can Be Correlated, Proper Dam Design Creates Wildlife Refuges, A Three-in-One Program