The Inventor and the Gay Gambler
Ingenuity Ranging from Marked Cards to Crooked Roulette Wheels for Separating the Fool and His Money
Volume 129, Issue 3
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Features
Camps of the Central Circle
Recognition Given the Automobile Tourist by Mid-Western Municipalities
"A Small Private Laboratory"
Some General Impressions Gathered During a Visit to the Riverbank Laboratories
Where Sound Waves are Put the Wallace Clement Sabine Laboratory of Acoustics at Riverbank
Sprayed Rubber
A New Hopkinson Process of Making Rubber which May Revolutionize the Rubber Industry
Sea-Going Ships for the State Barge Canal
Special Type of Barge Designed for Combined Lake, Canal, and Ocean Traffic
Bringing Order Out of Chaos
The Emergency Job of Reconstruction after Philadelphia's Station Fire
Converting the Lump of Coal into Electric Power and Light : New York's Hell Gate Station, Representing the Last Word in Generating Practice
Sixteen-to-One Automobile Testing
Extraordinary Assembly of Apparatus for Making Many Tests on a Single Run of a Motor Car
High-Altitude Mountaineering
Dynamiting Bedrock Over a Subway Tunnel in New York Harbor
The Trial Trip of the "Leviathan"
A Five-Day Test of the Motive Power, Equipment and Operating Staff
Psychic Adventures at Home
The American Supplement to My European Expedition: A Sitting with Ada Besinnet
Some Milestones in the Development of the Modern Typewriter
Keeping the Ash in Motion
Continuous Mechanical Discharge of the Unburned Residue, and Its Role in Boiler Efficiency
Ventilating an Existing Tunnel, The Use of Paper in Gardening
More Water for Washington
The Great New Conduit that Will Double the Capital City's Supply
Protecting a Beach From Erosion by Ice, Liquid Oxygen as an Explosive
The Army Ants of British Guiana
Jungle Insects that Have Learned the Importance of Force of Numbers and Discipline
The Wind-Power Automobile
What Happens When the Tire Hits the Road
Studying the Impacts from Pot-Holes and Obstructions, with Different Types of Tires
The Senses of Insects
The Heating Value of Gas, A Novel Instrument for Navigators
Safeguarding the Miner
Safety-First Cooperation of the Bureau of Mines, the Operators and the Miners
A Diminutive Electric Tractor, Industrial Use of Powdered Coal
The Maple Sugar Industry
The Tree that Made Vermont Famous, and How its Delectable Juice is Harvested
Whole Wheat Bread Without Flour, Measuring the Drying-Time of Varnish
Precision X-Ray Apparatus
New Means of Rectification and Voltmetering that Take the Guess-Work Out of Roentgenology
Adrenalin, the Drug of the Hour, The Life History of a Star
Stretching the Harvest Through the Winter
A Graphical Survey of a Year's Out put of America's Canning Industry
A Trade that is Passing, Copper Qualities
Our Reserves of Energy
The Heat and Power of the Future, Seen from the Brighter Side
An Automatic Exposure-Meter, Doing Away with Dots and Dashes
Something About Calories
Relics of the 1840's
An Interesting Chapter from the Early History of the Telegraph
A Flexible Clutch for Marine Diesel Engines, Friendly Germs
Making Wrought Iron a New Way
A Mechanically-Operated Puddling Furnace which Does Away with Much Manual Labor
The Cathode-Ray Oscillograph
Measuring Electric or Magnetic Forces by Their Effect Upon a Stream of Electrons