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Improved Steam Boiler

Russia Leather

Fawkes' Steam Plow

Sir John Franklin's Remains

A Humboldt Institute

Dyeing Hats and Feathers

Governors for Marine Engines

Properties Characterizing Steel

Gold Amalgamators

The Manufacture of Axes

Hydraulic and Steam Cranes

Symmes' Gas Valve

Agricultural Mechanics

Hot-Air Ovens for Iron Furnaces

Ice Manufacture

Illuminating Gas

Improvement in Coffins

More About Coal-Oils and Coal

Notes on Foreign Inventions

The Four Organic Elements

Historical Days in October

Mode of Case-Hardening Wrought and Cast Iron


Curing Felons

Ira Kinman's Measuring-Faucet

Death of Professor Nichol

Hydraulic Science

One Hundred Thousand Subscribers!

Steam-Engine Regulators--Governor Cut-Offs

Fair of the American Institute

Weekly Summary of Inventions

Electrotyping by Lightning

Sale of Patents

Foreign Summary--Metals and Markets

Patent Claims

Drake's Improved Lamp

Molding Fruits and Insects in Metal

Baldwin's Lightning-Rod

Mellen Battel's Cant-Hook


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    Notes and Queries

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The Essential Guide to the Modern World

The Essential Guide to the Modern World