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Scientific American Magazine Vol 21 Issue 25

Scientific American Magazine

Volume 21, Issue 25

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Features

Sinking Screw Piles, Acid Rivers and more

The Celebrated Crosse Experiments

The Toad as an Entomologist

A. S. Ritchie

Railway Carriages in Different Parts of the World

Smith's Improved Corn Sheller

The Ejector Condenser

How Trains are Moved by Telegraphic Signals

The Manatee: The Human Fish

I. Cantini

A Prize for Everybody

The Asserted Superiority of the Right Hand

Causes and Prevention of Fires.—The Metro-Politan Fire Department

The Suez Canal

A Remedy for Strikes

The Spanish Gunboats

Men of Progress: —Celebrated American Inventors

The Rights of the Government and Patentees

Announcement for 1870.—A Splendid Work of Art and Cash Premiums to be Given

New Publications

Report of the Judges of Department of Steam Engineering at the American Institute Fair

Recent American and Foreign Patents

Patent Decision

Answers to Correspondents

Official List of Patents

Departments

Correspondence

Business and Personal