Volume 142, Issue 6
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Features
Looking Ahead with the Editor, June 1930
Aluminum and its 'Hard-Boiled' Alloys
How a Chemical Curiosity Became a 225,000,000-Pound Industry in Forty-Three Years
Super Magnetic Fields
Some Remarkable Experiments in England--The "Most" Interesting in the World--Promise New Revelations in Physics
From Coco Palms to Coconut Oil
The Coconut Has Exerted a Tremendous Influence in the Industrial Life of the Philippine Islands
Birds of a Bleak Arctic Island
A Bit of the Far North Is Borrowed for a Museum Habitat Group
Fragmentary Molecules of the Sun
On the Sun Most of the Elements Are in Isolated Atoms, Because of the Heat. Unfamiliar Compounds Are Being Discovered
Beautiful Bridges On New Rail Line
Exceptional Engineering Problems Involved in Construction of European Railway
Sinanthropus, the Peking Man
As Evidence Accumulates, the Million-Year-Old Fossils Found in China Are Assuming Increasing Importance
Coney Island's Museum
The First Institution Designed to Show Human Play-Reaction
Midshipmen at 'Landlubber' Colleges
Six Great Institutions Co-operate With the Navy in Preparing Naval Reserve Officers for Sea Duty
Linemen of the Sea
When Transatlantic Cables Are Broken, Men Must Be Sent to Splice Them
Speed Queen Smashes Sister's Record
Is There an Ether?
Aid for the Layman Who Attempts to Keep Abreast of the Changing Concepts of the Modern Physicist
Better Days for Aviation
Present Safe, Dependable Airplanes Will Be Further Improved and the Industry Placed on a Sound Business Basis
Tangled Commerce Abides Where Children Smoke and Swim
The Antipodean Manus Are the Pack Peddlers of the Pacific
Moving a Substation Underground
Without Interruption of Service, Substation Is Moved Seven City Blocks to New Underground Location
Warmed by Satan
An Engineer's Discussion of the Familiar Proposal to Derive Power from the Earth's Hot Interior
From the Archeologists' Note Book
Light Furnishes Ballroom Decorations
Color-Harmony Introduces a New Mode of Expression
The Amateur Astronomer, June 1930
A Monthly Department