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Utilizing Waste Heat from Steam Engines and Boilers

The Water We Drink

The Year and the Day

Scrubbing Machine

Perpetual Motion- February 4, 1871

Improved Externally Adjustable Packing for Pistons

Action of the Reciprocating Parts of Steam Engines, and Its Influence on the Problem of High Piston-Speed

Read before the Polytechnic Club of the American Institute by Chas T. Porter.

Quartz Crusher

Improved Sewing Machine

The Uses of Habit

Soluble Glass

English and American Scientific, Mechanical, and Engineering Journalism

Type-Setting Machines

The Present and the Past

NO. II—Facts of the Present—Destroying Agencies.

The Scientific Value of the Central Park

The Eclipse Expeditions

Obituary.--Hon. David Lyman

Cryolite and Its Uses

Thatch Made by Sewing Machines

Answers to Correspondents- February 4, 1871

A Remarkable Body of Water

From the American Journal of Microscopy, by Prof. J. P. Stelle.

Queries- February 4, 1871

Recent American and Foreign Patents- February 4, 1871

Official List of Patents- February 4, 1871

Issued by the U. S. Patent Office


  • Letters

    Correspondence- February 4, 1871

  • Recommended

    New Books and Publications- February 4, 1871

  • Departments

    Business and Personal- February 4, 1871

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