Popular Science Monthly 1923-01: Vol 102 Iss 1
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xi Ser. Sook 4 JE po cas Ry fe oe Popular Science Monthly « JANUARY, 1923; Vol. 102, No. 1 25 cents a Copy; $2.50 a Year Help Save Radio! N THE grounds of a charming country lodge in a little O Virginia town there stands a queer looking loudspeaker, made of stone and cement. When concerts from broad- casting stations are on the air, strains of superlative music float out over the countryside from the mouth of this great horn, POPULAR — MONTHLY Published in New York City at 225 West Thirty-ninth Street Health in Your Home ELDOM has a magazine article created more immediate “ and widespread interest than one in last month’s issue of POPULAR SCIENCE MONTHLY by Harry A. Mount, entitled, ‘*Why Our Homes Breed Winter Sickness.”” Mr. Mount ex- plained astonishing health facts—long known to science, but and are enjoyed by villagers a mile or more away! Armstrong Perry tells in the next issue of POPULAR SCIENCE MONTHLY how he discovered this loudspeaker and its re- markable inventor. [Ns THE same issue, Dr. M. I. Pupin, famous in- ventor and professor at Colum- bia University, will tell of a wonderful new project to broadcast a college education for the benefit of millions who are now denied the advantages of a university course. Christmas, 1922, has been called “‘the first radio Christ- mas.” Radio receiving sets have come to the fore among the most desirable gifts. At the suggestion of POPULAR SCIENCE MONTHLY, plans were being made as this issue went to press for nationally broad- casting on Christmas Eve the old Christmas carols. LSEWHERE in this issue you will read how the activities of a thousand snow- bound workers on a great Los Angeles water supply project are being directed by radio. At the suggestion of POPULAR SCIENCE MONTHLY, a special Christmas radio entertainment has been arranged for these men, marooned for months in the mountain fastnesses. Now—isn’t your imagina- tion fired by the variety of such practical applications of radio as those sketched above? But, wonderful as these possibilities of radio are, the development of wireless broadcasting today as a great new institution of public service is seriously ham- pered—simply for lack of Fed- eral legislation. Whether radio is to remain in its present state of confusion, or to realize fully the tremendous opportunities which POPULAR SCIENCE MONTHLY has for a year and a half predicted, will partly de- pend on public opinion. Your aid is needed to help save broadcasting from its pres- ent difficulties. Read the edi- torial note on page 28 of this issue, telling what YOU can do about it. More than 100 Important Articles, Including: Page Rich Rewards for Arctic Pioneers........... 23 By Vilhjalmur Stefansson Is the $150 Automobile in Sight?............ 26 By Harold F. Blanchard Moving a River through a Mountain........ 28 Steel Bridge Shot with Concrete............ 29 More Life for the Movie Close-Up.......... 30 A Modern Chemist’s Magic................ 31 Rescued from Chasm by a Bag of Rocks..... 37 Accidents that Kill 75,000 Yearly........... 38 How Modern Baby Athletes Are Trained.... 39 A Lumberjack-Inventor’s Climb to Fortune.. 45 Building Ship Models for Millionaires....... 4a Navy Builds Monster New Airliner......... 59 Will Oil Replace Coal in Our Furnaces?...... 67 Jack Binns’ Radio Commandments......... 69 Is Your Car Fixed for the Winter?.......... 72 The Home Workshop—page 75 Better Shop Methods—page 80 Forty-Five New Ideas for Tool Users, pages 75-119 PopuLAR SCIENCE MONTHLY Issued gantity. aoe copy, 25 cents. Yearly ‘ejcmed United States, tks possessions, and Canada, $2.50; foreign countries, $3. Entered as second-class matter Dec. 28, 1918, at the Post Office at New York under the act of March 3, 1879. Entered as second-class matter at the Post Office Department, Canada. Printedin U. S. A. Copyright, 1922, bythe Modern Publishing Co. The a of this magazine must not be reprinted without permission. i. 5. — President ; R. C. Wilson, Vice-President B. Capen, Secretary and Treasurer ART COLOR PRINTING CO., NEW YORE hitherto ignored by the public —concerning the importance of humidity in the air we breathe, and suggesting effect- ive methods of preventing colds and even more serious illness. Mr. Mount’s article has won the commendation of leading national authorjties on ventila- tion and health, among them E. Vernon Hill, of Chicago, noted specialist in heating and humidifying apparatus, who writes: “The discussion in POPULAR SCIENCE MONTHLY of the real meaning of humidity in its relation to temperature, is desirable and timely. Every householder should obtain a practical wet bulb thermom- eter, to make a diagnosis of air conditions in his home.” R. E. P. LYON, dean of the Medical School of the University of Minnesota, writes: “IT have looked over the article on humidity in your December issue. I agree with you that this is a very impor- tant topic. Any humidity de- vice, to be really useful, must be automatic, since an ordinary house may take from 15 to 20 gallons of water a day, and no housewife is going to carry that amount to hand-filled humidi- fiers.”’ An Ideal Gift for a Man HERE is one Christmas| gift that will bring more pleasure, will give more valu- able ideas, will be more appre- ciated than anything costing three or four times as much. It will be used and enjoyed during the whole of next year. It will bring every month new ideas, new inspiration. It is Popular Science Monthly for 1923. For One Subscription Send $2.50. You will save a dollar if you order two subscriptions (one. can be your own), the special Christmas price being $4.00 for two subscriptions. = © btw Oo Le eo
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