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Features

The Effect of Lemon Juice in Lemonade upon Typhoid-Polluted Water

By William G. Bissell

Ice Harvesting

By W. Frank McClure

Sea Water for Street Watering

The Baths of Pompeii

Triceratops Prorsus—An Extinct Monster

The Development of the Submarine in the Direction of Increased Scope

A Study of the Lake Submarine Torpedo Boat “Protector”

By John Halligan

In the Land of Opium

The Morphological Method and Progress

By G. B. Howes

Plant Food from the Air

Stability Tests for Nitrocellulose and Nitrocellulose Powders

By Albert P. Sy

Oldest Technical High School in the World

The Celebrated Thunder Mountain Region in Idaho

Engineering Notes

Trade Notes and Recipes

Electrical Notes

Trade Suggestions from United States Consuls

Selected Formulæ

Departments

  • Departments

    Patents - January 2, 1904

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial