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Chaffee's Patent Drying Machine.—Figure 1

Looking Glasses

Powers on Cleaning Marble Statues

Collecting Vinegar from Wood

Safety Railway Truck

The Sardine Fishery

The Atmosphere, and its Effects upon Animal Life

Fire Telegraph in Boston

[Reported expressly for the Scientific American.] Lectures on Chemistry.—No. 4

Parkerapos's Water-Wheel Patents

For the Scientific American Sulphur and the Cholera

Machinery and Tools as they are.—Printing Presses

Form and Heat of the Earth—North West Passage

A Grand Junction Railway in Paris

High Price of Ships

Improved Grain Separator

Boring and Mortising Machine

Tonguing and Grooving Machine

Improved Railroad Switch

Improvement in Butter Firkins

Improvement in Clock Escapement

Cutting Barrel Heads

Improvement in Hand Looms

Mountain of Marble

New Foundry

The Hot Air Ship Erricsson

Colt's Revolver

Effect of the Earth's Rotation on Locomotion

List of Patent Claims

Patent Office Report

Improved Mode of Making Brick

New Locomotive

Foreign Patent Laws

New Railroad

The New Steamboat Law

The Scientific American—Prizes to Apprentices


Patent Principles—Telegraphs

The Founder of Mechanics' Institutes

Wells, Pumps, &C.

Process for Testing Iodine

The Iron Trade in England

Manufacturers and Inventors

Old Apple Tree


  • From the Editor

    To Correspondents

  • Recommended

    A Chapter of Suggestions, &C.

  • Literary Notices

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