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Features

The New Rotterdam Electrically-Operated Floating Dock

By Frank C. Perkins

Proportioning Concrete

Improving Roads by Oiling and by Calcium Chloride Treatment

M. Lippmann's Method of Photography in Color

The Design and Construction of a 100-Mile Wireless Telegraph Set

By A. Frederick Collins

Radiation from Gas Mantles

By J. Swinburne

The Properties of Tungsten Filaments

Early Illuminating Oils

By C. F. Chandler

Modern Manufacture of Alcohol.—III

Extraction of Alcohol from the Mash, or Fermented Wort

Wood Preservation

Corundum and its uses

Industrial Applications of Gypsum—II

By Robert Grimshaw

How to Improve Telephony—Mechanical and Electrical Phenomena in Telephonic Transmission

By the English Correspondent of Scientific American

The Flight and Soaring of Birds

Two Instruments for the Composition of Simultaneous Movements

By Alfred Gradenwitz

X-Rays and Radio-Active Substances as Therapeutic Agents

By Emil H. Grubbe

Comets

Science Notes

German-Silver Knife Tips

Engineering Notes

Electrical Notes

Departments

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October 06, 1906

Feeling Dead Inside?

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