
Lying-Down Spectacles, Shortage of Coal-Tar Chemicals and More

Lying-Down Spectacles, Shortage of Coal-Tar Chemicals and More

Frost Chaser, Constructing World's Largest-Bore Tunnel and more, January 1936

An Ancient Egyptian Sundial, Laboratory Tests for Rugs and more

Pneumatic Rivet Passer, Gun Detector and more

Movies Analyze Industrial Operations, Flexible Cord Reel and more

Lamp Filament a Coiled Wire, X Ray Diagnoses Elephant's Arthritis and more

Is Beer Nutritious? Why Plants are Green and more

Youthful Maturity, Colored Newspapers in Siam and more

Treatment Prevents Wood Sap Stains, Fabrics Not Weakened by Cleaning Solvents and more

A Tunnel for Saddle Horses, Increase in Spider Bite Poisoning and more

Recorded Music and Sound Effects in "Hamlet", Tomato Test for Poison Gases and more

Anti-Cavitation Marine Propeller, Chemistry Imitates Reptile Skins for Women's Shoes and more

New Soap has no Taste, A Telephone Call-Recorder and more

Lightning, Benefactor of Mankind, New Paint Resists Corrosion and more

An Industry That Was Made-To-Order

Easy Way to Melt Snow Blanket in Spring, Tracer Shotgun Sheil and more

Suspended Observation Car, Door Opens Automatically When Approached and more
Suspended Observation Car