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Features

Worssam's Timber Sawing Frame

Improved Bridge

Machines at the Fair which have been Illustrated in the Scientific American

New Locomotive

British Association for the Advancement of Science

Clock-work for Fastening Locks of Doors, Safes,Vaults, &c

Drilling Machine

Improvement in Iron Stairs

Grain Separator

Steam an Extinguisher of Fire

Locks for Safes, &c

Portrait of Washington

Hydraulic Rams

Firemen on Steamships

Artificial Hydraulic or Portland Cement

Iron Lighthouses

The Fair of the American Institute

Bell's Reaping Machine in America

Bellville and Illinoistown Railroad

Proceedings of the French Academy of Sciences

The Ship Challenge

Bomerang Propeller

Gold in New Zealand

Panama Railroad

Scrofula and Pork

What is to be Done with all the Gold

Advertisements

Back Numbers and Volumes

Prizes

Patent Claims

Cheap Postage—Important to Subscribers

Patent Laws, and Guide to Inventors

Human Fat Candles and Soap

The Harlem Railroad Tunnel

An Excellent Tooth-Powder

Mechanics

The Purifying of Wine

An Unrighteous Act

What is Heat?

Heat for Propelling Ships

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  • From the Editor

    To Correspondents

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October 30, 1852

Beyond XX and XY

Biology. Identity. Equality.