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Walker's Improved Spice Box

Improved Wind Mill, A Curious Formation

Last Words From England

Odd Watches

New Publications

Editorial Summary

Damascus Steel

Dixon's Low Down Grate

Handy to Have in the Shop

What is a Peddler?

Gleanings from the Polytechnic Association

Steam Boilers--Their Form, Construction, and Material

Extension Notice

Recent American and Foreign Patents

Answers to Correspondents

Rose's Reversible Hoe

The Cashmere or Angora Goat

Caution

Patents in The Dominion of Canada

Gas Meters--Wet and Dry

A Trial of Cut-Offs

How Steamers are Burned at Sea

Ocean Telegraphy

Patent Claims

Elder's Combined Milk Cooler and Butter Preserver

How to Obtain Patents

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April 27, 1867

Confronting Common Wisdom