Features
Birmingham Gun Makers' and Inventors' Club
Gardener's Stool
Pocket Bootjack
Biscuit Manufacture
Compressed Air Locomotives
Twitchell's Draft Regulator and Heat Economizer
Drying by Chemical Action
Opening the Public Libraries on Sunday
Fireproof Building and The Lesson of Chicago
Power Produced by Steam, under Different Temperatures and Pressures
A Long Felt Want
Recent American and Foreign Patents - May 11, 1872
Departments
- From the Editor
Answers to Correspondents - May 11, 1872
- Letters
Correspondence - May 11, 1872
- Departments
Business and Personal - May 11, 1872
Notes and Queries - May 11, 1872
Index of Inventions - May 11, 1872
