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Spencer's Cure for Garrulity

The Ruins of St. Mark's Campanile

The First Magnetician

Purification of Drinking Water by Ozone According to the Siemens & Halske Process

What the Microscope has Done

A City Fuel Oil Pipe System

Effect of Propeller Pitch on Speed

Double Boring Mill

The Modern Bessemer Plant

Ocean's many Microbes

An Experience in a Gaseous Mine

Platinum Discoveries

The Role of Mosquitoes in the Dissemination of Diseases

By A. Dastre

“Crime” among Animals

Why are Sea Birds White?

The Harpoon-Foremost among Savage Inventions

By Otis Mason

Electrolytic Production of Metals, with Special Reference to Copper and Nickel

By WM. Koehler

Alcohol Lamp and Mirograph Projection Apparatus

Horn Lightning-Arresters with iron Framing

By Eugen Klein

Attar of Ylang-Ylang

New Green Coloring Substance Extracted from the Blood of Animals Poisoned with Phenylhydrazine

Direct Combination of Chlorine with Carbon

Trade Notes and Recipes

Trade Suggestions from United States Consuls

Selected Formulæ


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August 23, 1902

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