Automatic Steam Engine

A Gas-Propelled Boat

Bisulphide of Carbon

Electrical Fire Arms

Our Coal Deposits--Their Formation and Extent

An Objection to the Large Telescope Answered

Scientific and Practical Information

The Vienna Exposition

Pumping Engine

Wenham's Heated Air Engine

M'Grath's Patent Side Stick and Quoins

The Belgian Dray

Fireproof Floor

Improved Garden Hoe

Sanitary Notes--Food and its Preparation

The Needle Valve Automatic Oil Feeder

Scotton's Patent Round Tree Box

Positive Circulating Vertical Tube Radiator

Adjustable Pulley Bolt

Portable Steam Renovator

Tannate of Soda

Whiffletree Stub

Decisions of the Courts

United States Circuit Court--District of New Jersey

The Southern Canal

Recent American and Foreign Patents

Answers to Correspondents

Copyrights

Best Mode of Introducing New Inventions

Communications Received