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Tempering and Grinding Steel

Crawford, the American Artist

Profusion of Life in the Ocean

Iron Houses

A Toad Insulated

Spontaneous Combustion—A Warning to Manufacturers

Hardening Tallow

A New Tubular Condenser

Thompson's Life Preserving Seat

Another Trip of the Ericsson

Bone Dust

Great Engineering Invention

Recent Foreign Inventions

The Wheat Fly

Foreign Scientific Memoranda

Scientific Memoranda—American

Cleaning Boiler Flues

Improvements in Switches for Railroads

Iron Wheel Fellies

Governor for Steam Engines

Steam Carriages for Common Roads

The Colt Patent in Congress

List of Patent Claims

New Plastic Compound for Useful and Ornamental Purposes

Plated Ware

What our Country Pays for Guano

A Railroad Anecdote

England's Tribute to American Manufacture of Arms


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