Missing Links of the Gobi Desert
How a Handful of Fossils Has Filled a Former Gap in the Evolution Tree
Volume 136, Issue 4
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Features
The Next Great Comet Is About Due
New Knowledge May Enable Scientists This Time to Fathom Its Secrets
Fishes that Can Shock You
Electric Rays, Electric Eels, Electric Catfish and Some Other Fishes Deliver Strong Electric Shocks. How the Electricity Is Generated Is Not Yet Thoroughly Established
Uncle Sam Spendthrift—IX
Neglect Causes 200 Million Dollars Yearly Loss by Soil Erosion
The Month in Medical Science, April 1927
A Review and Commentary on Progress in the Medical and Surgical Field
"Hello, London—New York Calling"
" . . . Marks the Beginning of a New Epoch in Communication Between Two Hemispheres"
"Metropolis"—A 'Movie' Forecast of the Future
Transporting a River Over Mountains
Tapped at a Point 260 Miles From Los Angeles, the Colorado River Is to Furnish Part of the Water Supply for That City
Inventors Who Have Achieved Commercial Success, April 1927
The Fourth Interview of this Series is With the Inventor Who Has Perfected the Production of Animated Cartoons
Twentieth-Century Railroad Building
Thirty-nine Million Dollars Spent to Improve the Railroad Connection Between Oregon and California. Natron Cut-off Reduces Grades and Curvature, and Opens Up a Great Area of Undeveloped Country
The Reconstructed Battleship "Texas"
Blisters Below Water, Heavier Deck Armor, Improved Boilers, Tripod Masts and Larger Cruising Radius, Render the "Texas" a Far More Efficient Ship
The Escape of "Old Ironsides"
Was the Famous Ship Saved by the Threefold Means of Towing by the Ship's Boats, Kedge Anchors, and Extemporized Canvas Sea Anchors?
Sensitive Relays Without Magnets
An Unusual Adhesive Force Between Partial Conductors of Electricity Makes Possible These Unique Relays
Airplane "Eyes" Used for Map Making
Huge Lifting Magnets in Industry
Our Railway Accidents Analyzed
Increase in Safety Is Due to Extreme Care
From the Scrap-book of Science—Camera Shots of Scientific Happenings, April 1927
In the World of Chemistry, April 1927
A Department Devoted to the Advancements Made in Industrial and Experimental Chemistry
Applied Science for the Amateur, April 1927
A department devoted to the presentation of useful ideas wherein will be found material of practical value for those who are mechanically inclined