MEDICINE AND SURGERY 1929
by MORRIS FISHBEIN, M.D.
Editor, Journal American Medical Association
Popular Science Monthly – January 1930
THE following subjects have been of exceeding interest during the year just completed.
The concentrated extract of vitamin D made by irradiating ergosterol and now prescribed and sold as viosterol is of the greatest importance as a preventive and cure of [...]

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COMMUNICATION DEVELOPMENTS 1929
by FRANK B. JEWETT, Ph. D.
President, Bell Telephone Laboratories
Source: Popular Science Monthly – January 1930
IMPROVEMENTS in apparatus, circuits, and methods continue to extend the limits of communication and to im-prove its speed, quality, and depend-ability. Illustrative of this is the proposed transatlantic telephone cable, the main link of which will probably extend 1,800 [...]

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GEOGRAPHY ADVANCEMENTS 1929
by WILLIAM BOWIE
Chief, Division of Geodesy,
U. S. Coast and Geodetic Survey
Source: POPULAR SCIENCE MONTHLY – January 1930
EXPLORATIONS have been in progress or initiated during the year along a number of different lines. Commander Richard Evelyn Byrd has been in the Antarctic, exploring the edges of the ice fields and, by air-plane, the interior [...]

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RADIO ADVANCES 1929
by JOHN V. L. HOGAN
Radio Engineer and Inventor
THE growth of radio during 1929 has been not only in the improvement of technical processes and apparatus, but also in the organization and extension of its services and in the adaptation of radio principles to work in various other fields.
Public contact with radio is mainly [...]

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ENGINEERING ADVANCEMENTS 1929
Source: Popular Science Monthly – January 1930
by COLLINS P. BLISS, M.A.
Professor of Mechanical Engineering,
New York University
FORMAL opening of the eight-mile Cascade Tunnel, the longest railroad tunnel in the United States, ushered in the engineering year of 1929.
Outstanding engineering projects of the year include the great International Bridge at Detroit, longest suspension bridge in [...]

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AERONAUTIC ADVANCES
by ALEXANDER KLEMIN, Sc.M.
Professor of Aeronautics,
New York University
ONE  of  the most striking developments of the year in aeronautics has been the use of ethylene glycol in the cooling of aircraft engines. Since water boils at 212 degrees F., operating temperatures must be kept down to 180 degrees. With ethylene glycol an operating temperature of [...]

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PATENTS TRADEMARKS AND COPYRIGHT

THE VICTOR BUILDING: Our New Building Nearly Opposite U.S. Patent Office Specially Erected by Us for Our Own Use
OUR OFFER FOR THE PROTECTION OF YOUR INVENTION
YOUR FIRST STEP—The inventor should write for our blank form “RECORD OF INVENTION.” Before disclosing your invention, a sketch and description should be made on our “Record [...]

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AUTOMOBILE ACHIEVEMENTS 1929
by ALFRED REEVES
General Manager,
National Automobile Chamber of Commerce
WHILE the motor production for the year just concluded was climbing well above the five-million mark, and sales abroad were in the neighborhood of one million vehicles, scientific advances were underwriting stability for the motor industry.
In short, we cannot divorce the study of this industry from [...]

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