Improved Balanced Governor Valve

Crooked on Disinfectants

Useful Plants

Growth of Our Navy

Ruggles's Shaft Coupling

Gun-Paper

Interesting to Oil Men and Miners

Improved Portable Steam Engine

The War Powers of Europe and America

New Steamboat Fuel

The Ames Gun

The Non-Recoil Gun

Low's Shingle Machine

Miscellaneous Summary

Honors to Mechanical Engineering

Iron-clad Ships

The Scientific American---Commencement of Volume Xv

Allen's Improved Valve

Improved Steam Boiler

The Adaptation of Implements to Labor and the Laborer

Paris Universal Exhibition

The Culture and Manufacture of Silk

Patents in Congress Again

The Value of Timber

Patent Claims

Issued from the U. S. Patent Office

Hart's Cravat Holder