Scientific American Magazine

Immunology, a Science which Often Goes to Law, Identifying Blood Stains, Animal or Human, What the Bio-chemist Does in the Laboratory

Theoretically Obsolete a Few Years Ago, the Big Fellow is Back, All Powers are Building Battleships, New French Dunkerque Set the Pace

There is Evidence that Galactic Space Contains Extremely Tenuous Material--Scattered Atoms of Gas--and is not Wholly Empty, Its Source?

Steam Locomotive Still Supreme . . . Fewer in Service . . . More Power . . . Greater Efficiency . . . Engineering Improvements . . . Newer Rail Power Units

Are Famous Track Records Inaccurate? . . . Effects of the Earth's Gravity and Rotation . . . Even the Latitude Has Effects That Alter the Records

Permeable Jetties . . . Better Than Solid Ones . . . Trip Waves Without Stopping Them . . . When Water is Slowed Up, it Deposits Sand, Builds Beaches

Versatile Moly . . . Industrial Newcomer . . . Important for Alloying . . . Improves Physical Properties . . . Catalyst . . . Unusual Potentialities

The Greatest Puzzle of All Science Seems Today to Be Nearing a Solution . . . Yet, As it Breaks Up, its Parts in Turn Form Newer, Baffling Puzzles

Why Venomous Snakes Cannot Injure the Hopi Indian Priests . . . Explanation Is Simple

Our Weather Influenced by the Stratosphere . . . Radio Transmitters Anchored at High Altitudes to Send Out Thermometer and Barometer Readings