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The Water Works System of the Pan-American City

American Locomotives in England.—V

The Building of Model Tenements

A Kerosene Oil Blowpipe

Air Lift Pump

Penman's Water-Tube Boiler

Use of Blast Furnace Gas in Explosion Motors

Some Motions, Relative and Absolute

By Oberlin Smith

Contemporary Electrical Science

The Sprague Trains

New Method of Photo-Printing

The Presidential Address of Joseph Wilson Swan, F.R.S., at the Glasgow Meeting of the British Association

Motor Fire Engines at Grünewald, Berlin

The Minerals of Morocco

The Intelligence of our Wasps

By A. S. Packard

The Longevity of Insects

By Carus Sterne

Methods of Curing Tobacco

By Milton Whitney

A Camping or Mess Wagon

Selected Formulæ

Trade Suggestions from United States Consuls

Trade Notes and Receipts



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