Volume 166, Issue 2
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Features
'Maid-Of-All-Work'
Place of the Versatile Destroyer in Modern Navies
Inch by Inch, Tooth by Gear
Army Officers Receive Technical Training in Motor Vehicle Operation and Up-Keep
Smokeless Powder
Chopped-Up Cotton Speeds Production
Shutters and Cutters
High-Speed Motion-Picture Photography Used in Study of Machine-Tool Cutting Edges
Glass Blocks Bend Light
Daylight Conservation Achieved by Refraction of Incoming Light to Ceilings and Sidewalls
Safe at Work, Light, and more
Better Lighting Reduces Industrial Hazards
Stellar Advertising Signs
Neon, So Rare on Earth, Proves to be 1000 Times More Abundant in the Stars
Ancient Ostia
Ignoring Present-Day Strifes, Archeologists Unearth Rome's Once-Thriving Seaport
Fossil
World's Oldest Evidence Of Animal Life
No Mystery In Pep
Seven Simple Rules for Getting and Maintaining a Reserve of Vigor
Yardstick, Noise
For Planning the Daily Diet; Ear Plugs Protect Industrial Workers
For Better Paint
Methods of Testing Surface Coatings for Metals Have Definite Place in Maintenance
Cloud Charge, Canal Lighting, and more
Mobile Power, Coach-Sleeper, and more
Railway-Car Plants For U. S. Navy
Glue Spreader, Hand Guards, and more
Military Rockets
Anti-Aircraft Traps, Rocket Shells, Weather Study, Airplane Starters, are Possibilities
Flying Boat, Skyfarer, and more
Could Fly Non-Stop to Europe and Return