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Features

The Manufacture of Bessemer and Crucible Steel

The Pneumatic Sub--Aqueous Tube

The Cotton Manufacture--Weaving

Business and Manufacturing Items

Editorial Summary

The Boiler Explosion on Board the Lighter Enterprise

The Mechanical Equivalent of Heat

Science Familiarly Illustrated

Manufacture of Beet Sugar

By Joseph Hirsh

Answers to Correspondents

Recent American and Foreign Patents

Alexander's Lever Saw Set

Police Intelligence!--A Patent Agent in Trouble

Trial Trip of the Steam Ram Dunderberg

Permanence of Animal Types

Caution

Patent Claims

Extension Notices

Patent Office Decisions

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March 16, 1867

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