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Features

The Pneumatic Dispatch

Miscellaneous Summary

Diffusion Process for Extracting Sugar

Gleanings from the Polytechnic Association

Ellerbe's Transplanting Implement

Lehman's Improved Stop Cock

Government Gas Lighting

Conversion of Wooden Ships

Pitezels Excelsior Clamps

Recent American and Foreign Patents

Breech-Loading Arms for the Government

Answers to Correspondents

Important Law Case--Fire-Proof Safes

Extension Notices

The Scientific American Office

Drainage and Utilizing Waste of Cities

Corrosion of Steam Boilers

Condition of the Patent Office

Advertisers

Patent Claims

Photogram

New Publications

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January 05, 1867

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