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Show Start Early, Girls, to Find Real Mate, Expert Admonishes Widen Circle of Friends, Improve Your Personality New York. Go out of your way to make friends, im prove your personality, get out of a rut, and give real time and thought to finding a husband. These admonitions admoni-tions were given along with much other practical advice on how to win a mate, direct ed particularly to college girls and other intelligent women by Dr. Paul Popenoe, general director of the Institute Insti-tute of Family Relations, Los Angeles, Calif. Two difficulties hamper the girl who would like to marry, but cannot can-not find a suitable partner. Dr. Pop enoe says. The first has to do wilh her marriageability; the second with lack of opportunities for meeting meet-ing eligible young men. Here are the elements that go to make up marriageability, as outlined out-lined by Dr. Popenoe from his broad experience In the study of married couples at the Institute ot Family Relations: 1. The girl must be sexually nor-mal. nor-mal. If she is mannish or engrossed with persons of her own sex, she may be cured provided this Is a psychological condition. The happiest hap-piest marriages are between womanly wom-anly women and manly men. Mustn't Be Suspicious. Keeping Up Sjiene C Science Service. WNU Service. Miniature Airplanes Now Fly Freely in New Test Tunnel Scientists Test Catapult for Launching Transports By WATSON DAVIS Director, Science Service. Langley Field, Va. Miniature Minia-ture airplanes take off and maneuver for the sake of science sci-ence in the world's first "free-flight" "free-flight" wind tunnel just demonstrated dem-onstrated for the first time by the National Advisory Committee for Aeronautics at its laboratories here. Instead of the small counterpart ot a full-sized airplane being held conventionally in an experimental blast of air, the artificial breeze is increased until the model takes oft by itselt and flies freely. Then ailerons ailer-ons and rudder are controlled by magnetic fields acting on small electro-magnets in the model's wings. The scientist in charge maneuvers the test model plane just as a pilot handles a real one. "We expect that this new method of studying airplane stability and control will give us much information informa-tion directly that we have hitherto obtained theoretically or by empirical em-pirical estimation," said Dr. George W. Lewis, N. A, C. A. director of research. "Bumps" or gusts of wind are measured and studied by two new devices devised by N. A. C. A. experts. ex-perts. Instrument Fits Pocket. One of these is a bump recorder small enough to fit into the pocket About 160 of these instruments are placed in airplanes and seaplanes of different types during actual flight One of them has been carried by the China Clipper on round trips between San Francisco and Manila. From the curve traced by the instrument in-strument engineers are able to reconstruct re-construct every roughness of the voyage and tell what stresses the craft withstood. 2. She must be emotionally grownup. grown-up. The Infantile girl is likely to have a fear of sex that unconsciously uncon-sciously perhaps, prevents her from desiring or attaining a happy marriage. mar-riage. 3. She must not be suspicious or stand-offish by disposition. 4. She must not make the mis take of relying on her diploma to charm desirable potential husbands. When 250 happy, educated married couples were asked what they found most admirable in their respective mates, most of the women stressed Intellectual companionability. B u t the husbands were pleased with something quite different it was the wife's ability to do her job and be equal to the responsibilities of marriage, mar-riage, i A girl to be attractive as a wife must appeal to the man's emotion, she must be able to enhance his ego, and she must have domestic competence. If she lacks these assets, as-sets, she can not offset the deficiency deficien-cy by putting forward a quality that he does not particularly want capacity ca-pacity to satisfy him intellectually. Be Seductive, Alluring. For the woman who possesses these points of marriageability, the importance of the correct technique for winning a mate was stressed by Dr. Popenoe who has many practical prac-tical hints to offer in this connection. Don't be misled by thinking that you must take the initiative in courtship or proposal, he warns educated ed-ucated women. The role of the female fe-male as seductive and alluring rather rath-er than aggressive goes back in evo- Gusts are made to order in a new tunnel and model airplanes are catapulted cat-apulted into them. As fast as an arrow is shot from a bow, the tiny plane Is accelerated to 50 miles per hour in a few feet of travel. Hit by the gust, its action is recorded by a motion picture camera. The famous N. A. C. A. cowling which streamlined air - cooled engines so effectively several years ago has been Improved and adapted to the 1,500 horsepower engines developed de-veloped in the past few years. There is an adjustable nose slot In the new cowling design so that the pilot can give the engine more cooling cool-ing air while it is working hardest. lution not only far beyond the human, hu-man, but far beyond the mammalian mam-malian stage; it is unlikely that it can be disregarded now, he warns. "The woman who is not clever enough to maneuver a man into a position where he will propose, is probably not clever enough to hold a man after she gets one," he said. Age tells heavily against the college col-lege girl. She probably does not graduate until she is twenty-two. At that age half the women of the United States are already married. Men usually marry younger women; at twenty-five, a man will marry a girl of twenty-two, but at thirty-five thirty-five he will marry one not of thirty-two thirty-two but of twenty-eight. If the college col-lege girl takes a job for a few years after she graduates, her statistical sta-tistical chances of marriage will vanish, Dr. Popenoe points out. Natural Acid May Be Used to Protect Plants London. Arsenic, lead, copper and other mineral poisons now used to protect plants against fungus, bacterial bac-terial and insect enemies may find practicable and harmless replacement in an acid naturally formed by living liv-ing plants, suggests Maurice Copisarow, Manchester biologist. biol-ogist. The substance is known as maleic acid. Experiments have shown that it exercises an inhibitory effect on the growth of micro-organisms of decay, and Mr. Copisarow suggests that its effect may extend also to viruses hidden in dormant seeds and to insects in early stages of development. de-velopment. This same natural inhibitor, in-hibitor, he adds, is probably transformed trans-formed into the natural accelerator of fruit ripening, ethylene, by a chemical change involving the liberation lib-eration of carbon dioxide. Mr. Copisarow suggests that maleic acid may be applied as a spray in some suitable neutral oily medium. Unlike the mineral poisons poi-sons commonly used for plant protection, pro-tection, maleic acid can be eaten by human beings without harm. Reduces Take-Off Distance. Just by reducing the size of rivets In an airplane wing by one thirty-second thirty-second of an inch, it is possible to reduce the power necessary by 100 horsepower. This is one result of the experiments on the friction drag on the wings of large modern airplanes. In operating high - performance per-formance modern aircraft, the importance im-portance of smooth surface in a wing is so great that the N. A. C. A. experts suggest it may be found economical to have service crews wipe off accumulated dirt and dust on wing surfaces at every stop. Large air transports leaving our airports in the future may be catapulted cata-pulted in order to assist their takeoff take-off and reduce the long run now necessary, if a suggestion of the N. A. C. A. is adopted. A catapult with half the acceleration of gravity would reduce the take-off distance from 1,800 feet to 1,150 feet. Causes of Plant Cancer Are Sought in Bacillus New York. A phosphorus-containing material, relatives rela-tives of which are found in the human brain and liver, has been isolated by Drs. Er-win Er-win Chargaff and Michael Levine of the College of Physicians Phy-sicians and Surgeons at Columbia Co-lumbia university and Monte-fiore Monte-fiore hospital from the body of a bacillus that causes tumors tu-mors in plants. In plants there is a well-known disease, the crown-gall, which bears a slight resemblance to tumors in nimals. It is produced by the bacillus ba-cillus tumefaciens. Using the chemical methods developed de-veloped by Dr. R. J. Anderson of Yale university, who recently purified puri-fied an acid from tubercle bacilli which produces symptoms of tuberculosis tuber-culosis Itself when injected into an animal, they are engaged in analyzing analyz-ing the crown-gall germ. Their first results show that it contains a phosphatide phos-phatide which stimulates rapid cell multiplication in plants. |