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Features

Aniline Black

Beet Root Sugar

Bolling Mill Gearing

The Levering Patent Desk

Pratt's Elastic Boiler-Tube Scraper

Skinning and Stuffing of Small Quadrupeds

Burghardt's Improved Milk Can Stopple

A Noble Inventor

Improvements in the Steam Engine

What is Pressure? and What Work Will It Accomplish?

The New York “Times” on Nitro-Glycerin

New Type-Setting and Distributing Machine

King-Crabs and the Manufacture of Cancerine

How a Workingman May Get a House of his Own

Cultivation of Opium in the United States

New Publications

The Late Rev. Patrick Bell, LL.D

Editorial Summary

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

Official List of Patents

Applications for Extension of Patents

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Introducing Scientific American Health & Medicine

Introducing Scientific American Health & Medicine