Volume 130, Issue 4
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Features
The Mooring Mast is the Thing
Flying Around the World
The Route Laid Down for the American Fliers Who Will Attempt Circumnavigation
Teapot Dome
Some Physical Facts in the Naval Oil Reserve Problem
Running the Rapids of the Grand Canyon
An Exceptionally Hazardous Piece of Surveying and Mapping by Uncle Sam's Topographers
A Theater Without a Stage
The Whole Building Given Over to the Play with the Audience Part of the Scenery
Here and There, April 1924
Untangling Our Automobile Laws
Vehicle Commissioners of Ten Eastern States Are Marking Together Toward Uniformity
A Static or Dynamic Atom?
Houses of Mud
Old-Age Pisé Construction as an Answer to the High Cost of Building Materials and Labor
The Story of Steel--IV
The Huge Blast Furnace, in Which a Fierce, White-Hot Fire Reduces Iron Ore to Pig Iron
Water from Gasoline in Airships
Our Psychic Investigation
A Summary of Results to Date, and a Plea for Better Mediumistic Cooperation
A Telescope of Record Dimensions, Shrouding the Propeller and more
By Our Berlin Correspondent
Largest and Fastest of the Zeppelins
New German-Built Airship for the Navy, Soon to Set Sail for the United States
The Food of Corals, Filter-Passers: Living Beings Smaller Than Bacteria
Our Abrams Investigation—Strange Adventures and Strange People
Queer Adventures and Queer People Met in Our Quest of the E. R. A. Truth
From Log to Paper: A Brief Visit to a Great Newsprint Mill in Canada
Ball Lightning
Saving Dollars by Salving Scrap
How the Multitudinous Wastes of a Great Railroad Are Converted Into Cash Values
Shipping Milk in Carload Lots, Log Rafts in the Open Ocean and more
How Gold Leaf Is Made
Little Fishes and Big Oil Pools
Machines and Methods Used in the Manufacture of the Fabric Tire
Flowers That Dislike Music
The Next Great Flood--Where?
How the Study of Probabilities Aids Our Engineers in Fighting an Age-Old Menace
Does Steel Melt from the Inside?, Storing Gasoline Under Pressure and more
Checkmating the Moth
New Investigations of the Life Cycle of this Insect and the Possibility of Preventing its Ravages
Water-Jet Propulsion, Old Egyptian Water-Clocks and more
Man-Made Lumber
Revising the Structural Arrangements of Saw-Mill Waste to Make Possible Its Utilization
Machine-Gunning Auto Bandits, Certain Gear-Shifting With a Foot-Loose Gear-Box and more
Bombing the Battleship
Smoke Screens and Phosphorous Bombs Enable the Airman to Make Close-Up Attacks
Inventions New and Interesting, April 1924
A Department Devoted to Pioneer Work in the Various Arts and to Patent News