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Features

Steam Turbines

A Review of their Development

Improving the Steam Engine

Laying Concrete under Water

Oxhydric Process of Cutting Metals.—II

Torches and Machines that Cut Steel

By E. F. Lake

To Determine Size of Gas and Oil Engine Cylinders

By Newton Wright

Ancient Marbles used in Modern Times

The Sources of Ancient Stone Supply

By Mary Winearls Porter

Kieselgur or Infusorial Earth

Its many Varied uses

By O. Bechstein

A Novel Traveling Railroad Gas-Holder

An Indian Gas Supply Car

Results of Tests on Several Grades of Fuel in a Producer-Gas Power Plant

Recuperation of Benzine

The Aeronautic Exposition in Frankfort

A Remarkable Undertaking

Suction-Gas Tug Boats on the Rhine

The Atomic Hypothesis

The Experimental Evidence in its Support

By R. Ehrenfeld

Canning and Preserving Fruit.—III

Hints for the Housewife

By Maria Parloa

The Egner-Holmstrom Telephone Apparatus

How to Join Electric Wires

Suggestions for the Amateur

Topographical and other Models

How They are Made

By Stanley C. Bailey

The Sixth Conference of the International Commission of Meteorology

Deep Sea Sounding Apparatus

Some Recent Improvements

By E. Moll

The Dangers of Traffic

The Psychology of Accidents

Calendar for 200 Years

From the Introduction of New Style

By Charles E. Benham

Trade Notes and Formulæ

Engineering Notes

Science Notes

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    August 21, 1909

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