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Improved System for Trestle Bridges

Polytechnic Association of the American Institute

Mushet on Cast Iron

Smith's Lift and Force Pump

Special Notice

Gillette's Improved Auger

Schaap's Fire Shovel and Sifter

Miscellaneous Summary

River Courses--Canals--Oil Veins

Secret Plans for Extracting Gold

Good Will

Purification of Lubricating Oil

Starch and Sugar


The Manufacture of Cheap Jewelry

Death of Dr. Mott

The Circumlocution Office

Patent Claims

Issued from the United States Patent-Office

Recent American Patents


  • Departments


  • Notes and Queries

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