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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

Confronting Common Wisdom