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Improved Seat and Bunk Tent

Notes on Military and Naval Affairs

Rolling Gun Barrels

Chemistry of Iron

Hardening and Tempering Tools and Metals

Floating Bridges

Birdsell's Self-Operating Davit and Cat Hook

Morehouse's Burner for Lamps Without Chimneys

Lanergan's Decklight

Fifteen Thousand Patents Secured Through Our Agency

To Our Friends

Now is the Time to form Clubs

Rock Oil

Our Country and the Scientific American

Harbor Defences--Martello Towers

Benzole--its Nature, Properties and Uses

The War and Business

The Atlantic Monthly

To Those American Citizens Who Desire to Become Exhibitors at the World' Fair, London, in 1862

The Kind of Gunboats Wanted

Recent American Inventions

Patent Claims

Issued from the United States Patent Office

Lane's Capillary Grooved Rulers With Paper Cutter and Rule Combination

Spaulding's Improved Milk Pan


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December 14, 1861