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Another Arctic Expedition in Prospect

Improved Stave-Jointer

Important Hints on Ventilation

By E. M. Richards

Mineral Products of Western Pennsylvania

New Ideas on Air Navigation

High Railroad Speeds

Our Precious Metals

The Great Meteor of 1807

The Southern Lights

New Iron Furnace

The Density and Temperature of Steam

Is the Manufacture of Oil From Coal Profitable?

Improved Bit Stock

Improved Ceiling Plates for Vaults

Notes on Foreign Inventions

Burning Oils

A Column of Facts in Relation to Meteors

Action of Heat-Diffusers

Puddled Steel

Ferrum or True Iron

Improvements in Tanning Wanted

Improved Machine for Picking Millstones

Completion of Our First Volume


Death of Washington Irving

Technology and the Beautiful

Death of Professor Turner

Science and Art

Weekly Summary of Inventions

Foreign Summary--News and Markets

Patent Claims

Combined Punch and Pinchers

Colville's Improved Method of Adjusting Circular Saws

Stempel's Trace Trimmer


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    Notes and Queries

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