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The Inventor of Iron-Clad Vessels

Improved Air-Pump

A Lecture on the Iron Navy of Great Britain

Applications for the Extension of Patents

Boating Oil to Market--A “Pond Freshet”

Gun Cotton for Artillery

How to Use Callipers

Preventing Waste of Heat in Boilers

Destructive Effects of Iron Rust

Paying Workmen With Orders

Human Vegetation

Surface Condensers of Marine Engines

California Items

Valuable Work for Inventors, Patentees and Manufacturers

Miscellaneous Summary

Patent Claims

Valuable Receipts

Recent American Patents

To Our Readers

Field's Improved Ice-Creeper


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  • Notes and Queries

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February 07, 1863

Of Shamrocks and Science

Happy St. Patrick’s Day