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Features

The Steam Battery “Monitor”

Notes on Military and Naval Affairs

Carbureting Apparatus for Street Lamps

The Fight Between the “Merrimac” and “Monitor”

Annual Report of the Commissioner of Patents

What Can Be Done for Inventors--Advice Gratis and Advice for Pay

Splendid Success of the Ericsson Battery

Imbecility in the Navy Department

How Long Has the Sun Shone and How Long Will it Continue to Shine?

T-Rail Shell-Proof Frigates--Learning by Experience

Patent Claims

Issued from the United States Patent Office

Recent American Inventions

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