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An Obelisk at Sea

Improved Automatic Fire Escape

Curious Animal Relationships

The Science of Play

The Duties of the Commissioner of Patents and the Supervising Powers of the Secretary of the Interior

Amateur Observations of the November Meteors

Imitation Terra Cotta

Influence of the Spinal Cord on Bodily Temperature

Another Traveling Expedition

Allan's Pressure Gauge

Improved Double Shedding Harness Jacquard Loom

A New Dredging Apparatus

Improved Ship's Speed Indicator

New Electrical Machines

Improved Window Fastener

Improved Safety Alarm and Door Bell

The Cosmograph


New Miscellaneous Inventions

Recent American and Foreign Patents

New Mechanical and Engineering Inventions

New Household Inventions

Communications Received


  • Departments

    New Books and Publications

  • Notes and Queries

  • Business and Personal

  • Index of Inventions

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