Bartlett and Boomer's Extension Hemmer

Improved Wheat Steamer and Dryer

One Hundred Thousand Dollars Reward for a New Plan for Canal Propulsion

Uncommon Food

The Cotton Worm

Combined Blotter, Ruler, and Paper Cutter

Mussel Climbing

Combined Milk Pail and Strainer

Seifert's Balanced Steam Valve

The Removal of the Hell Gate Obstructions

One Hundred Thousand Dollars Reward for a New Invention for Propelling Canal Boats

Inspection of Steam Boilers

Compound Engines

Scientific Intelligence- May 6, 1871

More Humorous than Scientific

Are Noisome Effluvia Injurious to Health?

Answers to Correspondence- May 6, 1871

Queries- May 6, 1871

Recent American and Foreign Patents- May 6, 1871

Official List of Patents- May 6, 1871

Issued by the U. S. Patent Office