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Improved Brick Machine

On Flying Machines

Miscellaneous Summary

The Steam Engine Indicator

The Children of Mechanics

Spaulding's Patent Broom Head

A Strange Inconsistency

The Heated Term--How to Keep Cool

Important Decision in Interference Case

The Markets

Our Commercial Marine

The Needle Gun

The Production of Timber

Importance of Bags

Patent Claims

Issued from the U. S. Patent office


  • Departments


  • New Inventions

  • Notes and Queries

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July 28, 1866

Science for the Modern World