Another Mammoth Cave

Increase of Tourists

The Morris Canal

To Restore Writing.--To Dye Straws

Supply of Oil

List of Patent Claims

Issued from the United State Patent Office for the Week Ending June 16, 1857

Notes on Science and Foreign Inventions

The Missouri Lead Mines Again

State Fairs for 1857

How Rain is Formed

Improved Tubular Boiler

Changes in the Patent Office

The Atlantic Cable and the Niagara

Progress of Railroads.--The Great West

Arsenic in Silk

Great Iron Viaduct

Brick Cylinders in Sand for Bridge Piers

Live Fences

States Weights and Measures

Canada Railroads and the Great Eastern

Who Invented the Menai Tubular Bridge?

Comparative Speed of Horses and Oxen

The Electro-Magnetic Engine

Inventor of the Mexican Barometer

Treating Wood for Violins

Correspondents

Important Items

Reyman's Field Fence

Boucherie's System of Preserving Wood

Mechanics

Inventors, and Manufacturers