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American Industries.--No. 47

The Manufacture of Dynamo-Electric Machines and Electric Lamps

A New Plan for Small Remittances

The Proportion of Patents to Population

The American Society of Civil Engineers

Cyprien M. Tessie Du Motay

The Army Worm

Hydraulic Elevator for Canal Boats

Mechanical Inventions

Improved Stylographic Pen

Ventilation of Boots and Shoes

Price Indicator for Gas Meters

Engineering Inventions

Improved Steam Boiler

Miscellaneous Inventions

Improved Brick Machine

New Thermo-Electric Battery

By M. A. Niaudet

The Carp and its Culture

Recent Decisions Relating to Patents

U. S. Circuit Court--Southern District of New York


  • Departments


  • Business and Personal

  • Notes and Queries

  • New Books and Publications

  • Index of Inventions

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June 26, 1880

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