Scientific American Magazine

Balanced Screw and Revolving Cotton Press

Some of the Uses of Paraffin

The Railways of the United States

Four Footed Motion

Government Aid to Scientific Investigation

New Law Concerning Copyrights for Labels

Refrigerating Mixtures and Their Physiological Effects

Scientific and Practical Information - July 11, 1874

Progress of the Fireless Locomotive

The Effect of Air Pressure on Animal Life

Improved Steam Engine

The Gravitation Compass

A Navigable Diving Bell

Astronomical Notes - July 11, 1874

Practical Mechanism Number IV.- July 11, 1874

A Novel Needle

Taper Sleeve Pulley and Wheel Fastener

A New Water Pitcher

Various Methods of Cooling Air

Recent American and Foreign Patents - July 11, 1874

Medical Notes - July 11, 1874

Answers and Correspondents - July 11, 1874

Communication Received - July 11, 1874

Canadian Patents - July 11, 1874

Correspondence - July 11, 1874

New Books and Publications - July 11, 1874

Business and Personal - July 11, 1874

Index of Inventions - July 11, 1874

Patents - July 11, 1874