SA Supplements

The Ruins of St. Mark's Campanile

The First Magnetician

Spencer's Cure for Garrulity

What the Microscope has Done

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

The Modern Bessemer Plant

Double Boring Mill

A City Fuel Oil Pipe System

Effect of Propeller Pitch on Speed

Platinum Discoveries

An Experience in a Gaseous Mine

Ocean's many Microbes

The Role of Mosquitoes in the Dissemination of Diseases

“Crime” among Animals

Why are Sea Birds White?

The Harpoon-Foremost among Savage Inventions

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

Alcohol Lamp and Mirograph Projection Apparatus

Horn Lightning-Arresters with iron Framing

Direct Combination of Chlorine with Carbon

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

Attar of Ylang-Ylang

Trade Notes and Recipes

Trade Suggestions from United States Consuls

Selected Formulæ

Patents - August 23, 1902