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Scientific American Magazine Vol 42 Issue 11

Scientific American Magazine

Volume 42, Issue 11

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Features

American Industries, No. 34

THE MANUFACRURE OF PUNCHING AND DRAWING PRESSES, DROP HAMMERS, DIES, ETC.

Who Shall Hold the Surplus?

Regulation of Shifting River Channels

The Drive Well in New York City

Ferdinand De Lesseps and the Chagres Canal

Improved Roller Gate

Novel Method of Carpeting Stairs

A New Fruit Drier

Improved Mould for Sewer Building

A Novel Small Motor

New Gas Saver

Cheap Spectroscope

Agricultural Inventions

New Potato Digger

Improved Controlling Valve for Engines

The Leaf Mormolyce

Natural History Notes

The Condition of French Workmen

Improved Cam for Stamp Mills

Electric Lamp Tests

Communications Received

Departments

New Books and Publications

Index of Inventions

Notes and Queries

Business and Personal

Patents