Volume 2, Issue 19
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Features
Argument of Hon. Charles Mason
Our Friends
The Profits of Tanning
Aerial Chariots Drawn by Eagles
Prevention of Scale in Boilers
The Cotton Gin--Letter from a Planter
McEwen and Patterson's Ventilating Shoes
Durkee's Grain-Binder
Changing Motion
The Instinct of Appetite
Literary and Scientific Notices - May 5, 1860
Death of an Inventor - May 5, 1860
Polytechnic Association of the American Institute
A Column of Varieties
Hardening Edge Tools
A Pipe Made in a Chicken's Gizzard
Improved Planing Machine
Kennedy's Method of Securing Iron Mouth-Pieces to Clay Retorts
Coloring of Nature and Art
The Way to Manage an Invention
The Result of the Water Wheel Experiments in Philadelphia
Editorial Correspondence - May 5, 1860
American Police and Fire Alarm Telegraph
Weekly Summary of Inventions - May 5, 1860
Industry--Manufactures--Commerce
Discoveries and Inventions Abroad - May 5, 1860
Patent Claims - May 5, 1860
Issued from the United States Patent Office