Scientific American Magazine

A Key to Nature Study, For Pedestrians Only, A Project of Real Magnitude, From the Wilderness of Maine to Northern Georgia

Iron, Glass, the Arch, Bath Rooms, Found to Have Been in Use Far Earlier Than Formerly Supposed, 4500 Years Ago, A Surprise

Associate Professor of Psychology Duke University.

Advanced Amateur Photographers Will Find Many Uses For Exposure Meters, When And How To Use Them, Outdoors, Indoors

The Investigation of Three Newly- Discovered Stars of the Companion - of - Sirius Type (the Famous Star That Weighs a Ton Per Cubic Inch) Shows That These Extremely Dense Bodies are Old Stars in the Process of Going Out. It Also Shows That Planets Much Larger Than Jupiter are an Impossibility Anywhere in the Universe

Copper, Much New Research, Many New Uses, Alloys, Adaptations, Hardened and Enameled, Quick Patina, Improves Iron, Steel

Subsistence Homesteads, Business Arrangement for Wage Worker, Home-Grown Food Supply, Federal Program Gives Direction to Movement Now Slowly Reversing Urbanization Trend

A Universal Hobby, Daily Weather Reports, Noise on Short Waves, Care in Tuning

Giants, Dwarfs, Fanatics, Neurasthenics, Loafers, All Made by Disordered Glands

Possibilities of Rotating Wing Aircraft, Vertical Rising, High-Speed, Roof-Top Landing