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Features

Improved Regulator for Steam Engines, Depths of the Sea, and more

A Week on Oil Creek

By Chas. A. Seely

The Manufacture of Lead Pencils

The Pen--Its Construction and Use

Manufacture of White Lead

“Well-Rotted Manure”

Salt--Its Uses and Production

Miscellaneous Summary

Chemical Notes

Special Notices

New Publications

Becker's Metallic Roofing

Breathing--out of Doors and in the House

The Inflammability of Petroleum

Mechanical Nonsense

Patent Claims

Issued from the U. S. Patent Office

Departments

  • Departments

    Correspondence

  • New Inventions

  • Notes and Queries

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