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Features

Blondlot and Prof. Wood on the N-Rays

The Electric Smelting of Iron Ore

Panama Canal Problems

News about the Submerged Coal Experiments

Launch of the Armored Cruiser "Tennessee"

"American Estates and Gardens"

To our Subscribers

The New British Patent Act

Radium and Radio-Activity

The Great London Power Station

By Harold J. Shepstone

Roman Remains in North Africa

By the Paris Correspondent of the Scientific American

The High-Powered Traction Engine and Its Many Uses

Aeroplanes in France and M. Archdeacon'a Apparatus. -- Rules for Concourses

Photography of the Interior of the Eye

By L. Ramakers

The Bioscope--An Instrument for the Study of Insect Life

By Emile Guarini

Irrigation in Southern California

By Day Allen Willey

Battleships "Idaho" and "Mississippi"

The Modern Battleship Within and Without

The How and Why of the Modern Keyboard.--I

By P. W. Galpin

Business and Personal Wants

READ. THIS COLUMN CAREFULLY--You will lind inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we wili send you the name and address of the party desir-ingtheinformation. Iu every case it is necessary to give the number of the inquiry

Departments

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    Recently Patented Inventions - December 17, 1904

  • Notes and Queries - December 17, 1904

  • New Books, Etc. - December 17, 1904

  • Index of Inventions - December 17, 1904

  • Patents - December 17, 1904

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December 17, 1904