Scientific American Magazine

Pennsylvania Railroad

How to Exterminate Roaches

Bellefontalne and Indiana Railway

To Kill Rats

To Get Rid of Grain Weevils

New Route to California

Cure for Cancer

Cracker and Biscuit Rolling and Cutting Machine

Pacific Rail Road

Cave in California

Prospects of the Wool Trade for 1850

Old Rice

The Census Law for 1850

Old Tan Bark

Stone Cavalry

The Descendants of Robert Burns

Western Giants

Steamboat Boilers

Subterranean Lake at Lancaster

Charcoal for Cisterns

Liquid Gold

Parsnips for Pigs

Death from a Pin

Destitution in Glasgow, Scotland

Indestructibility of Enjoyment

Telegraph Profits

Colonel Fremont

Death of a Great Man

Maryland Institute

The Atlantic

Philosophy of Mechanics

Table of the Board Measure of Logs

The Patent Office and Reform of the Patent Laws

The Use of Oxide of Zinc is not Injurious to Health

Improvement on Hanging Brakes for Railroad Cars and other Machinery

Ingram's Improved Water Closet

New Kind of Black Ink

Proposed New Description of Railway

Chromatype

Self-Adjusting Churn

Oil Stone

Tight Pantaloons and Tobacco

New Serving Mallet for Riggers

Patent Case—India Rubber Pontoon Boat

Propeller Improvements

New American Coins

Splendid Present

Light and its Effects—Gothic Churches

Perspiration

The Solvent Properties of Caloric, Similar to Acid Gases

List of Patent Claims

John Bull Turning Yankee

Inventors and Mechanics

Accoustics

History of Propellers and Steam Navigation

Petrification

Mathematics of Bees

Divisibility of Matter

Useful Statistics

Important Notice To Us!

To Correspondents