
The Next Great Flood--Where?
How the Study of Probabilities Aids Our Engineers in Fighting an Age-Old Menace

The Next Great Flood--Where?
How the Study of Probabilities Aids Our Engineers in Fighting an Age-Old Menace

Getting Our Money's Worth in Fertilizer
Simple Facts About the Intricacies of the Fertilizer Problem as Viewed from Many Angles

Our Smallest Toilers
How Modern Medicine and Modern Industry Are Putting Bacteria to Work

Getting Along With the Boll Weevil
Abandoning Hope of Suppressing this Pest, the South Considers the Problem of Its Control

Fuel by the Ton or the Gallon?
The Principal Advantages and Disadvantages of the Oil-Burning Furnace for Domestic Use

Garbage in Working Clothes
The Efforts now being made to get the value out of this Municipal Waste

Peace-Time Jobs for Poison Gas
How Chlorine and the Other Members of the Family Have Been Put to Honest Work

The Raw Materials for Artificial Daylight
Some of the Little-Known Processes and Machines Used in Making Incandescent Lamps

The Lincoln Highway of the Telephone
The Romance and the Technical Difficulties Met in Laying a Giant Cable Across the Mountains of Pennsylvania

Sewage: The Price of Civilization
One of the Problems of Modern Community Life with Which Our Remote Ancestors Had No Concern

A Garbage Crisis
Must we Solve Anew the Problem of the Disposition of Domestic Wastes?

Can the Airplane Be Made Safe?
Why Airplane Fatalities Take Place and What Is Being Done to Make Flying Safe

Developing Motion Picture Film with Automatic Machinery

Industrial Alcohol
Where It Is to Come From, and Some of the Things We Are to Do With It

What are Vitamines?
Studies and Experiments which Cast some Light on these Mysterious Elements of Nutrition

Something New in Salvaging Equipment

The Oil that Makes the Wheels Go 'Round
Animal and Vegetable Lubricants vs. Those of Mineral Origin Today and in the Future

Animal Tissue That Does Not Die
How a Bit of Chicken Heart Has Been Kept Alive and Growing for More Than the Chick's Span of Life

The Burning Mines of the Hocking Valley

The One-Piece House
Simon Lake's Scheme for Producing Ready-to-Live-In Concrete Unit Dwellings and Transporting Them to the Site

Finding Jobs for Radium
Facts and Figures Regarding the Many Uses to Which This Most Precious of Metals Is Put

When Humpty-Dumpty Travels

Making Weather to Order
The Indoor Meteorology That Makes All the Difference Between Industrial Success and Failure

Stunts of the Stage