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Improvement in Bakers' Rotary Ovens, Improvement in Street Car Signals

Patent Office Report

Science Familiarly Illustrated

Answer to Correspondents

Recent American and Foreign Patents

Extension Notices

Commissioner of Patents' Report

Turning a Movable Wheel Around a Fixed Wheel

Meretricious Ornamentation of Machinery vs Finish of Working Parts

Importance of a Commissioner

Ships' Pumps Done Away With

Patents and Claims

Issued by the United States Patent Office

Manufacturing, Mining, and Railroad Items

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February 15, 1868

The Antidote to Anti-Intellectualism