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Improved Cannon

A Trip from London to Amsterdam

The Great Exposition Complete

Leavitt's Fruit Dryer

The Accelerating Gun

Lowe's Spiral Spring Packing

Smith's Improved Extension Ladder

Editorial Summary

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

Misapplication of Terms--A So-Called Explosion

France as a Power

Notice to Subscribers

The Linen Manufacture

Protection for Passenger Car Platforms

The Patent Office Delays

The Tomato

The Union Pacific Railroad

Official Report of Patents and Claims

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August 03, 1867

Complex Causes. Alternative Solutions.