Volume 98, Issue 13
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Features
Acetylene Lamps and Smoky Automobiles
The Comparative Trials of Our Scout Cruisers
“Gluten” Bread and Cracker Frauds
Rubber Statistics of 1907
An Automatic Milk Supply
By Our English Correspondent
A Reinforced Concrete Elevated Tank
New Process for Making Shoes
By The Paris Correspondent of the Scientific American
An Observatory for Public Use
By Our Paris Correspondent
Some Experiments with Carbon Disulphide
Curious Facts about Numbers
Joining of Last Span of Blackwell's Island Bridge
How to Construct a Balloon.--The Making, Inflating and Sailing of Gas Balloons
By B. Courtright, Aeronaut; Member Aero Society of Great Britain
The Ever-Shifting Eyeball.--Some New Experiments and Some New Conclusions
New Types of Lifebelts
By Our English Correspondent