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Improved Patent Cultivator

Valuable Receipts

Miscellaneous Summary

Strength of Guns and How to Cast Them

The Great Russian Steppes

The Proportions, Form and Dimensions of the Several Classes of War-Ships for Modern Service

[Continued from page 293.]

Polytechnic Association of the American Institute

Iron-Clad Ships Versus Batteries

The British Association for the Advancement of Science--Progress of Practical Mechanics

The “Dailies” on Big Guns

The Control of Steam Boilers

Visits to Our Machine Shops-The Allaire Works

Seventeen Thousand Patents Secured Through Our Agency

Why Money is Worth Only Five Per Cent

The Velocity of Steam and Air Under Pressure

Prosperity of the Cotton Manufacture

The Tools With Which Great Men Work

Bayonet Charges

Recent American Inventions

Patent Claims

To Our Readers


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