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Features

The Sponge Fishery of Florida

By John N. Cobb

Production of Glass Sand in 1902

The Centenary of Kant

On Purses; A Purse; And a Priory

Some New Photographic Chemicals

By H. Schweitzer

M. Blondlot's N-Ray Experiments

Calcium Steel, the New Rival of Ceramic Products

The Kouleli-Bourgas Disaster

Watch Dials

Contemporary Electrical Science

The Distillation of Pine Products

By Thomas W. Pritchard

How to Build an Electric Oven

By H. Schmidt

Combined Condenser and Oil Eliminator for Steam Automobiles

Gasoline Inspection Cars for Railways

By the London Correspondent of the Scientific American

Electrical Notes

Engineering Notes

How much of the Heat goes up the Chimney?

Trade Suggestions from United States Consuls

Patents!

Trade Notes and Recipes

Departments

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    March 19, 1904

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