Cigar Making

A New Application of Tube Hydrometers

The Institution of Civil Engineers

Remarkable Structures of the Ancient Americans

The Agricultural Department at Washington

Transmission of Motion

A Lecture Delivered by Coleman Sellers, at the Stevens Institute of Technology, Hoboken, N. J., February 19th, 1872

Absurd Cosmical Theories

Fire

Hay and Straw Stacking Apparatus

Sewing Machine Treadle and Casters

Oxyhydric Illumination

The Horse Disease

Remarkable Stupidity

The Nose Straightener

The Vienna Exposition

Progress of American Iron Industry

Our Concrete Docks

The Growth or Evolution of Structure in Seedlings

Air Gas Light in England

Patent Decision

Professor James Hadley

Answers to Correspondents

Scientific and Practical Information

Communications Received

Recent American and Foreign Patents

Value of Patents, and How to Obtain Them

Practical Hints to Inventors

Patent Cold Rolled Shafting