Running a String of Oil-Well Casing

Our Search for the Supernatural--III

Demonstrations of Rappings and Ectoplasm Explained

A Skin Game in Metallurgy

Longer Life and Greater Productivity Given to Tools and Machines by Heavy Chromium Plate

New Brazing Method Cuts Costs

Fusion Process at Arms Plant is Applicable Throughout Many of the Metal Industries

Foil Substitute, Matting, and more

Mud Huts to Skyscrapers

Archeology Shows that Many Modern Building Methods are Thousands of Years Old

Folsom Man

The Shape of the Earth

New Determination of Its Polar Flattening, with a Saner Proposal for Submarines

Mad Dog--Mad Man

Most Modern Treatment for Hydrophobia is the Easily Obtained Simple Treatment

Pregnancy Test, Slit-Lamp, and more

Trucks for Defense

The Trucking Industry is Mobilizing its 4,500,000 Trucks for Emergency Transport

Badges

Bird Dogs of the Oil Field

Gamma Rays Often Point to the Presence of Oil in Old Worked-Out Wells

Polarizer

To Find 1000

A Pinhead-Sized Bit of Radium Can't Long Hide from a Physicist in a Ten-Acre Lot

Tektites, Puzzle of Science

The Origin of these Odd Objects Remains a Mystery Despite Years of Dispute

Lamp, Magnifier, and more

"Winged Warfare"

A Message to the Nation from Airmen Who Know What Military Aviation Needs

Wind Tunnel, Light-Plane Flying, and more