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Features

Improved Automatic Churn, Effect of the Removal of Forests

Railway Engineering in London

Miscellaneous Summary

The Origin and Composition of Peat

American Institute--Polytechnic Branch

Rehorn's Patent Sadiron

Myer's Drawer Knob

The Great Iron Belt

Ventilation of the National Capitol

Important to Advertisers

A Very Eminent Officer of the United States Navy on Iron-Clads

Patent Claims

Wolfenden's Universal Box for Turning Lathes

Departments

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    Correspondence

  • Notes and Queries

  • New Inventions

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Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis