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1931 SCIENCE AND INVENTION
JULY
1931
VOL. XIX
No. 3
56 PAGES
THIS MAGAZINE IS COMPLETE AND IN GOOD TO VERY GOOD CONDITION... PLEASE SEE PICTURES
TABLE OF CONTENTS....
Frontispiece 196
Using the King of Skyscrapers, the Empire
State Building, as a Projection Screen
Editorial 197
In Quest of Knowledge
Twenty Thousand Leagues Under the
Sea Today 199
Lieut. Cont. H. A. Gosnell, U. S. N. R , proves to us that Jules Verne's conception
of the submarine and today's submarine are almost identical
Eclipses Yesterday and Today 203
Scientists eagerly avail themselves of the
opportunity to study the sun and the
planetary system afforded by an eclipse . . the ancients regarded one as a portent of
evil. By Donald H. Menzel, Ph.D.
Fortunes in Plain Sight 206
The pot of gold believed to be buried at
the end of the rainbow, is nowadays more likely to be gleaned from material discarded, as useless, in your back yard
The Romance of Glass 208
A. Dinsdale takes you on a tour through
the Corning Glass Works and explains just
how glass is made
Are You Getting Enough Sleep? 211
Welcome relief for sleep -starved individuals. By Frederic Damrau, M.D.
Amazing Camels of the Plant Kingdom 212
:last may well envy some plants their flood
and drought control system, says Forman
T. McLean, of the New York Botanical
Gardens
The House of Tomorrow 214
Samuel G. Hibben gives Mary Jacobs his
conception of how we will live in the future
King of Mediums Made Ghosts to Order 215
Nino Pecoraro, world famous medium, confesses that all the phenomena associated
with his seances throughout his spiritualistic career were produced without benefit
of spirits
How and Why Your Tools Cut 216
You will get more satisfaction from your
tools if you take advantage of the facts presented by Prof. Alfred S. Kinsey
The World of Black Light 218
Ultra- violet and infrared rays enable us to photograph objects otherwise invisible. By
Walter E. Burton
General
Breeding Butterflies for a Livelihood 220
By L. Hugh Newman.
In the Spotlight of Science 221
Eight pages of the latest developments in every field of science
Would You Believe It? 230
Scientific Aids to Your Comfort 236
By Mary Jacobs
What's New in Radio 246
The Safety Valve 250
Science and Invention Announces the Third
Prize Winners of the $3,250 Ideal Home
Workshop Contest 266
Scientific Book Reviews 271 Index to Advertisers 270
Construction, Amusement, Experiment
Spectacular Harmless Fireworks 229
By Raymond B. Waìles
A Poker -Chip Dragon 231
By Charles H. Abler
Prize Puzzles to Polish Your Wits 232
By Sam Loyd
Ornamental Furniture from Discarded Spools 233
By H. L. Weatherby, Director of Manual Training, Montgomery County Schools, .Montgomery, Ala.
Preparing Your Outboard Boat for Racing 234
By J. Phillips Dykes, Vice Commodore and Secretary, American Outboard Assn.
New Tools You Can Easily Make 235
By Joseph Pignone
Making a "Fill -in" Book and Magazine Case 237
By Burton E. Walters
Magic 238
By Dunninger
Overhauling the Car for Weekend Trips 239
By Arthur George, Consulting Engineer
For the Home Machinist 240
By George A. Luers, Supervisor of Ordnance
Design, Naval Gun Factory, Washington, D. C
Wrinkles and Recipes 248
For Inventors
Patent Advice 242
Among the Inventors 244
