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Bismarck Bridge over the Missouri River and Northern Pacific Railway

The Panama Canal

How to make Concrete Walls

The German Corvette Prince Adalbert

Poor Economy

Imitation of the Phenomena of Electricity and Magnetism by Liquid or Gaseous Currents

Scamoni's Electrotype Method of Reproducing Photo-Reliefs

The New City Hall, Vienna

A New Residual Product from the Distillation of Coal

By George E. Davis

The Estimation of Sulphur in Coal Gas

Sewer Gas and its Dangers

By G. W. Mccaskey

Equivalents of Metals by means of their Sulphates

By H. Baubigny

Demerara Greenheart

Entomology and Medical Science


Irrigation in California

Obscured Glass for Vineries

The Ice of Greenland and the Antarctic

Our Animal Enemies and Allies Reconsidered


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January 05, 1884

20% Sitewide for President's Day