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The Beacon Tower of the Plateau of Horaine

A Gas Engine Difficulty

The Miller Automatic Flushing Siphon

The Simplon Tunnel.—IV

Brandt's Rock Drills

James Watt, the Engineer

Ventilating Fans for the Simplon Tunnel

Oxidized Linseed Oil

By Walter F. Reid

Apparatus for Shaking Bottles

Stained Glass Windows

Pneumatic Steel Fireproof Storage for Flour Mill Elevators

Medicine Three Thousand Years Ago

The Magnetometer

By Henry Wilde

Dry Batteries

By L. K. Bohm

Argon, the New Constituent of the Atmosphere

Chemical Action at Low Temperatures

Explosives and their Modern Development

By Vivian B. Lewes

Rare Animals in the Zoological Garden at Berlin

The Polecat

By T. A. W. Rees

New Carnations

The Red Cedar

The Water Lily Pest

Making an Orange Grove in Florida

The Irrigation Question in Nebraska

Development of Mineralogy.—V

By L. P. Gratacap

Schmidt's Theory of the Sun



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