Volume 13, Issue 21
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Features
Notes on New Discoveries and New Applications of Science
The St. John Boiler Explosion
Nitro-Glycerin
The Electric Ray of the English Channel and other Electric Fish
The Way Banks Are Managed in New York
Special Notices
Miscellaneous Summary
Recent American Patents
Steel Brush for Boiler Tubes
Bird's Geared Differential Pulley
Browne's Broom Head
Negative Slip
To Our Readers on the Pacific Coast
Fashions and Trades
Velpeau on Cholera
The Algonquin and Winooski Trial
Patent Claims
Issued from the United States Patent-Office