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High Finish on a Disk at High Speed

Flood Forecasting

Daily Gaging of Tennessee Valley Stream Levels and Rainfall; Dams Store or Release Water Accordingly; For Flood Control, Navigation

By Herbert F. Gough

Grits for Grinding

Abrasives Important to Industry; Make Possible Improved Grinding, Lapping, Polishing, Precision Work; Abrasive Research Goes On....

By Philip H. Smith

Number One Rocket Man

A Silhouette of the Shy Massachusetts Physicist Who Pioneered in Rocket Research, Much to His Distress He Broke into the Noisier Newspapers...

By G. Edward Pendray

Soon to be Flooded

By Johns Harrington

Cellophane is Born

By A. P. Peck

Chemistry's Newest Sleuth

Micro-Analysis Enables Chemists to Study Minute Samples, Diagnoses Product Flaws and Ailments, Supplements Usual Laboratory Methods....

By A. L. White

Insulin for Schizophrenia

An Estimate of the New Insulin Shock Treatment for Schizophrenic Insanity, The Enthusiasm for this Astounding New Method Apparently is Justified....

By Barclay Moon Newman

Starch from the Sweet Potato

Purity, Color, and Quality Equal to the Finest Starches, Bleaching Process Perfected, Of Great Economic Significance, Now in Production...

By Frank A. Montgomery

A Great Work Completed

The Monumental New General Catalog of Stars for the Professional Astronomer, in Preparation More than 30 Years, is Finished, An Enormous Task....

By Henry Norris Russell

Unpuzzling Color

Color Names Cause Confusion, A New System is Being Developed to Bring About Definite Standards, Like Sections of Grapefruit...

By John H. Crider


  • 50 Years Ago, May 1938

  • From the Editor

    Our Point of View, May 1938

  • Recommended

    Books Selected by the Editors, May 1938

  • Departments

    Personalities in Industry, May 1938

  • Giant Strip Mill, Binocular Magnifier, and more

  • Camera Angles, May 1938

  • Camera Angles Round Table, May 1938

  • Telescoptics, May 1938

  • Current Bulletin Briefs, May 1938

  • Legal High-Lights, May 1938

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