The Gatling Gun

Importance of Advertising

The Siamese Twins

The Dover and Calais Tunnel

Is Vitality Vital?

Scientific and Practical Information - February 7, 1874

The Vulcanization of Hydrocarbon Compounds

The Turner Car Brake—Application for an Extension

The Philosophy of the Sand Blast

The One Hundred Thousand Dollar Canal Reward

The New England Association of Inventors and Patent Owners

Professor Coffin

Utilization of Copper Scraps in Electro Plating

New English Thrashing Machines - February 7, 1874

Astronomical Notes - February 7, 1874

Professor Agassiz on the Darwinian Theory-- Interesting Facsimile Letter from the Great Naturalist

Fire and Waterproof Chimney Guard

The Toselli Torpedo

Physician's Cane

Patent Barrel Head

Professor Proctor's Astronomical Lectures

Decisions of the Courts - February 7, 1874

United States Circuit Court—Southern District or New York.Harvester Patent.—C. Aultman vs. H. C. Holley And E. H. Fittz.[In Equity—Before Woodruff, Judge.]

Recent American and Foreign Patents - February 7, 1874

Patent Office Decisions - February 7, 1874

Answers Correspondents - February 7, 1874

Communications Received - February 7, 1874

Canadian Patents - February 7, 1874

List of Patents Granted in Canada, January 13 to January 20. 1873