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The Great Cantilever Bridge Over Niagara River

The Use of Argol in Dyeing

Aspects of the Planets for December

Bacterial Disease of the Imported Cabbage Worm

Barrel Pump

Box Fastener


Slotting Shears

Fire Escape

A New Disk Fan or Exhauster

Locomotive Electric Lights

Young Marmosets

The Canadian Porcupine

Carpet Fastener


Mechanical Inventions

Miscellaneous Inventions

Agricultural Inventions


Engineering Inventions

Manufacturing Notes


  • Departments

    Business and Personal

  • Index of Inventions

  • New Books and Publications

  • Notes and Queries

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