Scientific American Magazine

New System of Aero-Locomotion, Sodium--A Scientific Canard

Harrison Steam-Boiler

Editorial Summary

Gold Hunting and Geology

Why a Belt Runs on the Largest Diameter of a Pulley

Our Navy--One Step in the Right Direction

Harris and Browning's Spring Friction Nuts

Science Familiarly Illustrated

Recent American and Foreign Patents

New Publications

Answers to Correspondents

Advantages of a Practical Knowledge of Mechanics to Inventors

Patentees at the French Exhibition

Caution

A Grammatical Problem

The Management of Boilers--Explosions

Credit

Probable Influence of the Internal Revenue Laws Upon Invention

British Steamships and Marine Engines

Patent Claims

How to Obtain Patents

A Superior Cap for Mucilage Bottles

Correspondence

Business and Personal