Volume 11, Issue 18
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Features
Peck's Patent Drop Press
New Guano Island
A Tall Chimney
A Large Ruby
Frozen Flesh
List of Patent Claims
Deep Artesian Well--Heat of the Earth
Steel Manufacture at Pittsburg
A New Perpetual Motion
The Democratic Tendencies of Science
Wind Flouring Mills for the Prairies
Gloves
Granite Dust a Fertilizer
Compressed Air Engines for City Railroads
Receipts of the Paris Exhibition; American Reapers
Locomotive Telegraph
Safety Spirit Lamp
Improvement in Seeding Machinese
Epidemics and Their Causes
Railroad Collision
Report of the Secretary of the Interior
Water Descending and Hot Air Ascending
Back Numbers Volume 11
Extinguishing a Burning Coal Mine
Award of the Scientific American Prizes
The Quality of American Wool
California.--Her Work and Ways
Draining of a Sea
Recent Foreign Inventions
A New and Improved System of Numeration and Measurement
Important Items
Excessive Division of Labor Injurious
Milk of Wax for the Skin
Cochineal
Extract of Indigo--Salts of Tin
Price of Coal in England
Mechanics
Inventors, and Manufacturers