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Features

Improved Boat-Lowering Apparatus

General Incandescent Electric Lighting in New York

One Has-Done-It Better Than Three Can't-Do-Its

Mica

New Combination Clutch

Hodson's High Speed Rotary Engine

Improvement in Razors

New Cotton Seed Huller

Paper-Bag Holder

The American Association for the Advancement of Science

By H. C. Hovet

Improved Agricultural Engine

Ferments and Diseases

Decisions Relating to Patents

Miscellaneous Inventions

Engineering Inventions

Textile Invention

Mechanical Inventions

Agricultural Inventions

Metallurgical Invention

Departments

  • Departments

    Recent Inventions

  • Notes and Queries

  • Index of Inventions

  • Business and Personal

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September 16, 1882

Beyond XX and XY

Biology. Identity. Equality.