Volume 24, Issue 23
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Features
Ransome Artificial Stone
Combined Thimble and Needle Threader
Apparatus for Dyeing Hair
A New Spectroscope
A Few Corrections of the Method of Determining the Percentage of Water Mechanically Suspended in Steam Delivered from Boilers Which Prime
Sash Lock
Cork Extractor
The Erie Canal Navigation Problem
How Labor Enslaves Itself to Capital
Charles E. Emery on Compound Engines
Trial of Olmstead's Electric Car Brake
Jean Lafitte and His Treasure
Canals Ancient and Modern
Popularizing Science
Ocean Telegraphy
The Descent of Man
Scientific Intelligence- June 3, 1871
Applications for Extension of Patents- June 3, 1871
Answers to Correspondents- June 3, 1871
Recent American and Foreign Patents- June 3, 1871
Queries- June 3, 1871
Official List of Patents- June 3, 1871
Issued by the U. S. Patent Office