The Submarine Explorer

Artificial Flowers

New Lubricating Materials

Patent Cases

Slating the Track

Grant's Light for Lighthouses

Flax Cotton

Singular Properties of the Digit 9

No Coal on Lake Superior

Antistatic Printing, &C

American Entomology

Gun Explosion at Gibraltar

A New Metal

Improvement in Rotary Stove Grates

Pipe Moulding

Improved Kettle

Shingle Machine

Old and New Inventions

Volcanoes, their Causes—Igneous Theory

The Effect of Climate on Health—Consumption

A Large and Small Wheel

Dinner to Inventors in England

A New Propeller for Steamers

Vinegar—its Adulteration

Telegraph between Quebec and Detroit

Recent Foreign Inventions

To Know Good Guano

Iron Casks

Mechanics

Manufacturers and Inventors

Gold Half-Dollars

Motion of Water