As the 200-Inch Telescope Develops
Promise of an Instrument Better than the Dreams of the Astronomers, Construction Under Way, To be Finished in Four Years, 1,000,000 Pounds
Volume 155, Issue 5
You are currently logged out. Please sign in to download the issue PDF.
Features
Invisible Lenses
Contact Eye Lenses, No Longer A Scientific Curiosity, But Improved During the Past Two Years, Now Being Worn For Longer Periods
Today--Tomorrow
Archeology In A. D. 8113, An Opportunity For This Generation, Preserving Records For Posterity, Co-operation Needed
Paper Progresses
New Technique in Paper Making, Yet Tradition Persists, New Papers, New Processes, The Role of the Laboratory, Increasing Efficiency
More About the New Lyttleton Theory of Planetary Origin
The Older Encounter Theory is Fortified, Removes the Last of the Dynamical Difficulties, But the Whole Problem is Still Far From Solved
Taking The Guesswork Out of Flying
Definite Paths of Operation, Pilots Exchange Information on Conditions, Trained Meteorologists, What the Dispatcher Does
An All-Belgian Canal
Albert Canal, Started 1930, Will Cost About 80,000,000, Be Completed Next Year, Gigantic Engineering Job, Economically Significant
New Aids for Criminology
Finger Prints Raised With Iodine, Spectrographic Analysis of Materials, Tiny Traces Yield Evidence, Contribute to Conviction
A Woman You Can See Through
A Find that Did Not Ring True
A Problem Solved, Though Solved Negatively, The Story Is a Naïve One, Mr. Brennan's Quick Irish Imagination, Practical Joke, WPA Workers
Frog Farming
Natural Supply Rarely Equals Demand, Italy Imports Breeding Stock from California, Problems of Feeding, Farming Replacing Hunting