The Darien Automatic Ventilator, The Use of Diamonds in the Mechanic Arts

Overshot Wheels

On the Flow of Elastic Fluids Through Orifices or Pipes

“Church of the Good Shepherd” Armsmear, Conn. A Beautiful Monument

The Simultaneous Transmission of Messages Over a Single Wire in Opposite Directions

Artificial Production of the Coloring Matter of Madder

Cutting Glass with Steel—The Magic Diamond

Improvement in Axles for Vehicles

Improvement in Ventilators for Buildings and Railroad Cars

The Consumption of Smoke

The Sewage Question

Draft in Chimneys

The Cornell University

The Elasticity, Extensibility, and Tensile Strength of Iron and Steel

American Silk

Editorial Summary

Modern Practices in Finance

Applications for Extension of Patents

Manufacturing, Mining, and Railroad Items

Recent American and Foreign Patents

New Publications

Official Lists of Patents

Issued by the United States Patent Office

Answers to Correspondents