Electrical Experimenter, vol. 7, no. 2, June 1919

This issue is composed of the following stories and articles, some of which go unattributed on the table of contents:

AN AËRIAL RESCUE AT SEA—Front Cover From a painting by George Wall

LISTENING TO THEATRE CRITICS

ELECTRIC DRIVE ON U.S.S. "NEW MEXICO" By Charles M. Ripley, of the General Electric Co.

NEW AËRIAL DEVELOPMENTS By H. Gernsback

HUNTING SUBMARINES BY SOUND By Brewster S. Beach

THAT ONE-MAN SUBMERSIBLE

MV INVENTIONS, PART V By Nikola Tesla

FILMING "TALKING MOVIES" IN GLASS HOUSES By H. Winfield Secor

CALL UP WIFEY ON THE STOVE-PIPE RADIO

TIN CAN MODELS—A NEW ART By George Holmes

MAKING A PRACTICAL ELECTRICIAN CLOSE-UPS OF NEW SCIENTIFIC MOVIES

PARIS LETTER By Jacques Boyer, Paris Correspondent of the Electrical Experimenter

POPULAR ASTRONOMY—"THE EVOLUTION OF THE STARS" By Isabel M. Lewis of the U.S. Naval Observatory

PRACTICAL CHEMICAL EXPERIMENTS—EGGS AND THEIR PRESERVATION By Albert W. Wilsdon

EXPERIMENTS IN RADIO ACTIVITY, PART IV (Conclusion) . . . By Ivan Crawford

HOW TO BUILD AN EFFICIENT MEDICAL COIL SET By H. Winfield Secor

A SMALL HIGH FREQUENCY OUDIN COIL by E. W. Cooke

EXPERIMENTAL MECHANICS, LESSON XII, PRACTICAL GRINDING OF TWIST DRILLS By Samuel D. Cohen

"HOW TO MAKE IT" DEPARTMENT, PRIZE CONTEST

WRINKLES. RECIPES AND FORMULAS Edited by S. Gernsback

THE RADIO LEAGUE OF AMERICA—AMATEUR RADIO RESTORED By H. Gernsback

THE MOON'S ROTATION By Nikola Tesla

RADIO DEPARTMENT—TESLA BULBS THE ALEX ANDERSON "BARRAGE" RECEIVER THE ROGERS UNDERGROUND AËRIAL FOR AMATEURS

LEARNING THE CODE By Howard D. Wildman

RADIO CONSTRUCTOR DEPARTMENT

CHOKE COILS—THEIR THEORY, CONSTRUCTION AND DESIGN By Prof. F. E. Austin

LATEST PATENTS DIGEST WITH THE AMATEURS—PRIZE LABORATORY CONTEST

SCIENCE IN SLANG By Emerson Easterling

THE ORACLE