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The Meridian Circle in the Paris Observatory

Utilization of the Heat of the Sun, A New Cement, and more

The Education of a Civil Engineer

The Paris Exposition

Curious Hydraulic Experiments

Rubies and Sapphires, Artificially Produced

New York Academy of Sciences

An Ingenious Method of Cutting Spiral or Rifle Grooves with an Ordinary Planer

New Diamond Tool Millstone Dressing Machine

Konz's Improved Furniture Caster

Rice's Improved Boiler Feeder

Roth's Improved Saw File Guide

Draper's Stovepipe Joint

The Silky Marmoset

A Beautiful Orchid

Hymer's Coal Cabinet

Astronomical Notes

Reeves' Excavator

Communications Received

The Scientific American

Wants and Business Inquiries


  • Departments

    Business and Personal

  • Notes and Queries

  • Index of Inventions

  • Patents

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