Two Outstanding Features of the Eclipse
An Account of the Origin of the Shadow Bands and of the Famous Diamond Ring
Features
Why Was the Moon Late?
How the Efforts of Many Volunteer Observers Contributed to the Precise Measure of the Moon's Position in Space
The Effects of the Eclipse on Radio
A Preliminary Report of the Comprehensive Observations Made By Our Own Collaborators and Others
Prize for Criticism of Eclipse Motion Picture
An Announcement of a Contest Which We Hope All Our Readers Will Join
A New Link in Man's Ancestry
The Psychic Investigation, April 1925
Claims of "Margery" to Produce Supernormal Phenomena Are Rejected by the Committee
Why Let Your House Catch Fire?
A Famous Fire Chief Gives Some Authoritative Advice on How to Help Decrease America's Staggering Bill for Fire Losses
New Concrete Pier at Bremerton Navy Yard
Economy of Combined Precast and Poured Concrete
Devices to Enable a Pilot to Maintain His Course and Equilibrium in Foggy Weather
From the Gold of Croesus to the Gold Dust Twins
For Thousands of Years Men Have Used Special Marks to Indicate Quality or Authenticity
Protection from the Tooth of Time
A Description of the Little-Known Art of Restoring and Preserving Old or Damaged Documents and Prints
The Unusual Occupation of Inlaying Prints
Our Radio Page, April 1925
The Electric Light Socket and Our Vacuum Tubes
Electric Filters that Illustrate Defects of Radio Loudspeakers
The 1924 Eruption of the Hawaiian Volcano
An Eye-witness Describes the First Fatal Explosion of Modern Times
Modern Ideas for Machine Shops
Moving the Machines to the Work in the Shops of the General Electric Company
The Krupp Turbine Locomotive
The Story of Steel--XII
Manufacture of Seamless Steel Tubing
The Smell Organs of Insects
The Antennae of Insects Play a Most Important Part in Their Struggles for Existence
A New Variety of Cross-Word Puzzle
Earn a Credit Toward a New Subscription
Departments
- Departments
Our Point of View, April 1925
Inventions New and Interesting, April 1925
Recently Patented Inventions, April 1925
The Scientific American Digest, April 1925
Learning to Use Our Wings
Radio Notes, April 1925
Science and Money, April 1925
The Heavens in April 1925
Notes and Queries, April 1925
