Volume 9, Issue 21
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Features
Parian Marble
Tin in California
Eccles' Patent Check Looms
Missouri Hemp
Vastness of the Universe
Extraordinary Invention
Imponderable Agents—No. 8
To Detect Cotton in Linen
General Scientific Memoranda
The New Patent Law of England
Pittsburg Statistics
Tracing Paper
Gast and Wrought Iron Rails
Cold in England
Elastic Varnish for Leather
Ocean Steamers
List of Patent Claims
Tanning Cotton and Linen
Recent Foreign Inventions
Locking Type Forms in Chases
Improved Car Coupling
Rock Drill
Improvement in Printing Presses
Brilliant Varnish for Leather
Emery Sand Paper
The Japanese as Inventors
Improvement in Carriage Axles
Improved Miter Box
Heliographic Engravings
Improvement in Building
The Astor Library
Petitions for Extension of Patents
Ocean Locomotion
The Emmons' Patent
Etherizing Congress
Ferry Boat Lights
The Length and Breadth of Steamships
Colt's Patent in Congress
Sal-Ammoniac from Gas Works
New Mode of Steam Repulsion
Crystal Palace
French Taste in the Crystal Palace
Anatomy of the Teeth
Separation of Nickel from Cobalt
Screw Stoppered Bottles
Preparation of Ferrocyanhydric Acid
A Steep Railroad Grade
A Spiritual Machine
Equilibrated Ships' Tables
Gold Assaying in South America
Mechanics
Manufacturers and Inventors