Features
The Coal Ration
The Census of the Stars
How the Astronomer Takes Count of Their Number, and Identifies Them Individually
When We Build Our House
Facts Regarding Kinds and Grades of Lumber Which Should Be Known By the Home Builder
The Extermination of Insects
The Chemical Go-Between
When Will Automobiles be Perfect?
Airships and Motherships of the Future
Our Psychic Investigation
The "Direct Message," and the Relation Which It May Ultimately Have to Our Work
The New Home of the National Academy of Sciences, Seeing to Taste
The Heart and the Heartbeat of the Plant
The Work of Distributing Moisture and Sustenance, and the Way in Which it is Done
Most Powerful Reciprocating Steam Engine Ever Built
An Amphibious Military Tank, The Perpetual Calendar and more
A Turbine Locomotive Which Saves Half the Coal
Doubling New York's Water Supply
Two Additional Lines of 11-Foot Pipe Increase Aqueduct Capacity to 500,000,000 Gallons Per Day
Lightning's Pranks, Assembling an Aerial Survey
Getting Along With the Boll Weevil
Abandoning Hope of Suppressing this Pest, the South Considers the Problem of Its Control
Musical Broadcasting Experiments
Taking the Menace Out of Dust
Life and Property Saved and Safeguarded by the Use of the Vacuum Cleaner in Industry
Making Big Photographs of Little Things
The New Conservation -- III
The Savings of Simplified Practice, and the Universal Benefits Resulting Therefrom
Completion of a Notable Concrete Viaduct, Moving a Town by Motor Truck
A Mechanical Solution of a Literary Problem
An Explanation for the Divergent Sequence of Events in the Gospels of Matthew and Mark
Finding Uses for Raw Rubber
Vivisection and Animal Industry
Fishing for Pearls
An Old-Time Industry to Which the Flavor of Romance Still Clings
Railroad Building in the Andes
Two New Transcontinental Lines to Pierce the Rockies of South America
Wearing Red and Green Spectacles to See Stereoscopic "Movies", Testing Kiln Circulation With Chemical Smoke and more
Long-Distance Telephone Problems
Getting More and More Messages Through the Same Number of Wires to Reduce Operating Costs
The World's Largest Vehicular Tunnel
Construction and Method of Ventilation of the Hudson River Tunnel
What Life Is
From Paper Model to Concrete Arch
How the One Affords an Accurate Prediction of the Behavior of the Other
A Safer Way of Bleaching Foods
Tungsten at Extreme Temperatures
How Electricity Causes Death
Fighting the Friction Fiend
How Invention Has Taken Advantage of the Peculiarities of the Lubricating Film
Construction of a Steam-Turbine Wheel
Power From a Whip, Cleansing New York Harbor
Storage Batteries That Are Out of the Ordinary, Radio-Frequency Amplifiers
Departments
- Departments
Our Point of View, February 1923
Inventions New and Interesting, February 1923
The Service of the Chemist, February 1923
The Motor-Driven Commercial Vehicle, February 1923
The Heavens in February, 1923
Recently Patented Inventions, February 1923
Science Notes, February 1923
Miscellaneous Notes, February 1923
Mechanical Engineering Notes, February 1923
Civil Engineering Notes, February 1923
Radio Notes, February 1923
Archaeological Notes, February 1923
Electrical Notes, February 1923
Automobile Notes, February 1923
