Production of Low Temperature and Refrigeration—II
The First International Congress of Refrigerative Industries
Volume 71, Issue 1834supp
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Features
Mica Production in India
Motor Truck for Hauling Building Stones
A New French Commercial Automobile
The Reliability of Electric Furnaces
Factors in Their Development Under American Conditions
Art and the Engineer
Combining the Useful With the Beautiful
Modern Coal Cutting Machinery and Mine Railways
Remarkable Labor-Saving Devices
Environment and Heredity
Modern Studies in Experimental Evolution
Clamp for washing negatives
Making Money Out of Bees—II
Keeping Bees for Pleasure and Profit
A Variable-Speed Carbureter
By the Paris Correspondent of the Scientific American