Scientific American Magazine Vol 139 Issue 4

Scientific American Magazine

Volume 139, Issue 4

You are currently logged out. Please sign in to download the issue PDF.

Features

The World of the Dog

Dogs Are Often Blamed for Shortcomings Really Due to Fundamental Differences of the Senses. How Would It Seem to Be a Dog

C. J. Warden

Why the Moon is Apparently Ahead of Its Computed Position

From the Scrap-book of Science, October 1928

Youth Hankers to Fly

Tired of Being Earth-bound, Many Young Men Are Learning to Fly at Uncle Sam's Expense

F. D. McHugh

World Astronomers Meet

Every Six Years an International Convention of Astronomers Is Held. What Kind of Affairs Are Transacted at These Cosmopolitan Gatherings?

Henry Norris Russell

New Languages from Old

How Secrecy Is Gained by the Inversion of Speech Sounds

Clyde R. Keith

The Kubu Forestmen of Sumatra

An Expedition to One of the Most Primitive Peoples on Earth, Who Dwell in the Primeval Forests

Tassilo Adam

Farming the "Beefsteak" Oyster

The Month in Medical Science, October 1928

A Review and Commentary on Progress in the Medical and Surgical Field

Morris Fishbein

Naval Adequacy--II

Ships in a Wide Variety of Types and Classes Are Needed By a Navy to Perform Numerous Duties During War or Peace-time

N. H. Goss

X-Rays Reveal Diseases of Ancient Egyptians

Primitive versus Modern Methods of Mint Farming

Menthol, Distilled From Oil of Peppermint and Used in Medicaments and Confectionery, Is Produced at a Lower Price by Japanese Mint Farmers Than by Americans With Better Equipment and Methods

Combating the "Bends"

Careful Regulation of Working Hours, and Better Equipment, Lessen the Danger to Workers Under Pressure

Albert A . Hopkins

Exploring in Palestine and Transjordania

An American Explorer Tells of His Travels and Discoveries in the Holy Land

W. L. Calver

Why Is a Radio Soprano Unpopular

Present-day Radio Laws and Radio Equipment Make Proper Reproduction of Soprano's High Notes Impossible

John F. Rider

The Menace of Increasing Population

The World Is Filling Up At a Wholly Unprecedented Rate, and An Avalanche of Trouble Threatens It. What Is the Remedy?

George H. Knibbs

Motor Sleeping Coach

Up Snow-clad Peaks

Climbing a Mountain of the Rockies Where Glaciers Are Plentiful

Herbert Otis Warren

One Machine Fills a Huge Plant

Greatest Automatic Machine in the Automotive Industry Receives and Inspects Strip Steel and Turns Out Completed Frames Almost Untouched by Human Hands

Departments

Our Point of View, October 1928

Salt and Pepper Shaker, Indoor Folding Clothes Rack and more

All Metal Guitars, Marcel Waver and more

Lincoln Highway Signed with Concrete Posts, Locomotive Has Front End Cab and more

Intercollegiate Flying Contests, Popularizing the Glider and more

Movies by Radio, Sweden Heads Europe With 53.6 Radio Sets to Every 1000 People and more

Asphalt Emulsion for Curing Concrete, Electro-Plating on Aluminum and more

The Back Yard Astronomer, October 1928

The Heavens in October 1928

Good to the Last Bite, The Fountain Pen Invention and more