Skip to main content

Features

Improvement in Separating and Concentrating Ores, Grains, Etc.

Is Hydrogen Gas a Metal?

“Modern Engineering”—By the Hon. Wm. J. Mcalpine

Velocipede Notes

Editorial Summary

Greene's Portable Engine, Union Check Valve, and Lubricator

Webb's Patent Adder and Tally Board

“Waste” and “Economy” of Fuel

Examination of Applications for Patents—The Two Systems Compared

Land and Water—Are Earthquakes Land Makers?

The Wickedness of Waste.—Value of Bones

Vegetable Oils Used in Painting

Importance of Accuracy in the Use of Mechanical and Scientific Terms

Hollow vs. Solid Shafting

Bulletin of the National Association of Wool Manufacturers

Conserving of Fruit

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

New Publications

The Gard Brick Machine

Official List of Patents

Answers to Correspondents

European Patents

Patent Offices

Departments

  • Departments

    Correspondence

  • Business and Personal

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format

Why We Need Our Zzzs

Why We Need Our Zzzs

Vital for Memory, Mood and More