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On The Minute Measurements of Modern Science

By Alfred M. Mayer

Improvement in Generating Electric Currents

By Alexander Graham Bell

The Chemistry of Gas Manufacture

One of the Metropolitan Gas Referees

By A. Vernon Harcourt

Natural Gas in Ironmaking

Pipes for Gas and other Purposes

Coal Mining at Steubenville, Ohio

By Andrew Roy

Orthoclase, or Common Felspar

Ohio Minerals

The Babcock & Wilcox Sectional Boiler

Boiler Explosions, from September, 1876, to April, 1877

The U. S. Iron Landing Pier, Near Lewes, Delaware

By A. Stierle

Steel Shipbuilding

Deutsche Chemische Gesellschaft, Berlin

By Prof. B. Baeyer

Dynograph Experiments

Impregnated Railroad Ties

Oxygen of the Air

Photo-Chemical Processes in the Retina

The Lime Light without Oxygen

Cooling of Cannon and Other Castings

By John S. Robinson

Action of Chloro-Chromic Acid Upon Anthracene

By M. A. Haller

Singular Case of the Production of Heat

By M. J. Olivier

Dyeing Leather

By M. W. Eitner

Transfer of Negative Films to Paper

Ancient and Extinct British Quadrupeds

By A. Leith Adams


Cod Fishing in Norway

Across Africa


  • Notes and Queries

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