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American Iron and Steel--Pittsburgh, the Iron City

News for Mechanics

The African Interior

By P. B. Du Chaillu

M'Master's Patent Clothes Line Holder

West Spruce St. Baptist Church, Philadelphia

Answers to Correspondents

The Heaton-Bessemer Correspondence

Manufacturing, Mining, and Railroad Items

Bureau of Naval Engineering--Some Hard Facts

Emery Wheels--How They Should be Made

Summary of the Velocipede

American Beet Root Sugar

Patent Office Contracts

Increasing the Power of Steam by Superheating

Do Laboring Men Have Time to Study?

Improvement in Finishing Pictures

The Philosophy of the Oven

Reported for the Scientific American

A New Register for Business Men

Editorial Summary

Economical and Simple Heater for Steam Boilers

New Publications

Mechanical Skill of Savages

Official List of Patents

Recent America and Foreign Patents

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January 23, 1869

See the World from a Different Perspective

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