Volume 133, Issue 3
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Features
Wind, Sail and Sea
Growing Popularity of Yachting in the Smaller Types of Boat
The Impossible in Stage Lighting is Achieved
How David Belasco Produces the Effect of Every Conceivable Sky Color, from Midnight Blue-black, Dusk and Moonrise Shadings to the White Light of Early Dawn
Did Man Descend from Monkeys?
The Unqualified Denial of Man's Ape-like Origin Is Misleading and Lacks Candor Teaching Only a Diluted Darwinism
Tagging a Bullet on the Wing
A New Apparatus that Photographs the Flying Bullet in Less than a Millionth of a Second
The Theory of Stellar Evolution Modified
A Star's Life History Reinterpreted in the Light of New Knowledge
The Silent Menace of the Oceans
Only One-ninth of an Iceberg Projects Above the Water
Must Our Universe be Infinite?
The World May Appear to Us Very Different From What It Is
Safeguarding the Airplane Pilot
Government Tests Determine How High Each Aviator May Safely Fly
The Higher Education of the Silkworm
Will Your Radio Set be Obsolete?
Research Laboratories, the Navy, and Amateurs Are Experimenting and Discovering Numerous Advantages to be Obtained by the Use of Short Wavelengths
United States Bureau of Standards Eclipse Observations
Important Spectroscopic, Radiometric, Illumination and Other Observations Were Made by Government Scientists During the Sun's Last Eclipse
Grisly War Trophies
How the Jivaro Indians Shrink the Heads and Bodies of Their Victims
How the Parisian Enjoys Opera at Home
Telephone Subscribers Enjoy a Unique Service from a Central Switchboard by Means of an Elaborate System of Amplification
Chemistry in World Affairs--III
Some Naval Theories Exploded
A Reply to the Criticisms of Captain Dudley W. Knox, U.S.N. (Ret.)
From the Scrap-book of Science--Camera Shots of Scientific Happenings
The Life Spark of Motordom
Cars of High and Low Degree Bow to the Efficiency of the Spark Plug
Insect Parasites of Insects
The Story of How Nature Provides Against the Over Propagation of Species and of How the Larva of the Fly Feeds Upon Caterpillars and Other Insects
New Light on Evolving Man
Recent Events Have Given the Science of Man's Evolution a New Impetus
News for Inventors, September 1925
A Department of Facts and Notes of Interest to Patentees and to Owners of Patent and Trademark Rights