Volume 12, Issue 21
You are currently logged out. Please sign in to download the issue PDF.
Features
French Chemists on Austrian Gun-Cotton
Invisible Radiation of the Electric Light
Schleier's Indented Rail
Farmers' Club
Egan's Kerosene Oil Burner
Resistance of Vessels in Water
Carleton's Submerged Glass Pump
Recent American Patents
Ancient Mexican Zodiac
A Unit of Heat and Specific Heat
Cheap Solvent for Gold
The Lenoir Gas Engine
Foot-Pounds of Work
Salt as a Fertilizer
Special Notices
The Game of Croquet
Miscellaneous Summary
Patent Claims
Issued from the United States Patent-Office