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Features

Diking and Draining Salt Marshes

Powers of the Commissioner of Patents

The Great Aeronautical Exhibition

Mechanical Notes

Lakin's Patent Heat Radiator

Brioday's Improved Artificial Leg

Editorial Summary

The Value of a Caveat

Extension Notices

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Should a Farmer be More than a Farmer

Watering Streets and Sidewalks

Employer and Employed

Business and Scientific Men

Swindling Patent Agents

Seasonable Hints--How to Keep Cool

Heating and Ventilation

Obituary--Death of an Inventor

The Glaciers of Switzerland

The Worcester County Free Institute of Industrial Science

Official Report of Patents and Claims

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July 29, 1868

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