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Features

The Underground and Elevated Electric Railway in Berlin—Now Completed and in Operation

By Frank C. Perkins

A New Egyptian Railway

The Ruthenberg Electric Iron Process

Commerce in the Soudan

Coal-Saving Devices

Electricity in Glass Manufacture

Anthracite's downs and Ups

Core-Wire Straightening Machine

Recent Developments in Coloring Matters

By Otto N. Witt

The Sigriste Photographic Apparatus

The Steam Turbine—Its Commercial Aspect

By Edward H. Sniffin

Making Eggs Tell their Ages

Peary's Work in 1901-1902

The Life of a Xiphopagis, or “Siamese Twins.”

The Electrical Conductivity of Plant Juices

By Fred. D. Heald

Cold Storage for Apples

The Lightest of all Woods

Selected Formulæ

Trade Suggestions from United States Consuls

Patents!

Trade Notes and Recipes

Departments

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November 01, 1902

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