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Features

Improved System for Trestle Bridges

Mushet on Cast Iron

Polytechnic Association of the American Institute

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

Starch and Sugar

Safes

Purification of Lubricating Oil

Death of Dr. Mott

The Manufacture of Cheap Jewelry

The Circumlocution Office

Patent Claims

Issued from the United States Patent-Office

Recent American Patents

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  • Notes and Queries

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May 13, 1865