Page:Popular Science December 1931.djvu/145

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Want a Steady Gov't Job? $158 TO $225 A MONTH MAIL COUPON BEFORE YOU LOSE IT — "06:40, 13 March 2017 (UTC)"»~ — " — I Franklin Inltltute, Dept. J-273 I Rochester, N. Y. I Sirs: Rush to me, without charge, (O Full f parlicuLirs telling how to become a Railway I Postal Cleric; (2) send copy of 32-page bfvik I "How to Get U. S. Government Jobs." with list I of many Government positions obtainable. ' Name StMdy Work— No L«joll»— Ptl<l V»o«tlo<n— Common Eduoallon Sufllolent I AildresS.. OPPORTUNITIES IN Management Become a Traffic Expert The opportunities in traffic man- agement are limited only by the boundaries of the business world. The trained traffic man is in de- mand by transportation systems and by industrial organizations. Three Detroit Firms Pay Their Traffic IManasttrs Over $20,000 a Year Prepare for this growing:, profit- able profession at home in your spare time under supervision of traffic experts. Low cost; easy terms. Thru the LaSallc Prob- lem Method you learn by doing. Valuable &l-pa£:e booklet free. Send for it Now. LaSalle Extension University, Dept.l283-T, Chicago This Book FREE! IntAnsfve. Practical, Technical Courses, tn Electrical , MKhanical. Structural . Architectural Enirineerinn, De- rrv* in 2 yra., diploma in I yr. Also flharter coursrs in Electricity. Power Plant. Racito. Telpsision, Electric Re- fri»«r*tion.'Draftlnjr. WrldiiiK. Nones»cnli«l»« .-liminatcd. , Low Tuition. Expert Inatructors. Extrnnively eauipp«-'i laboratoriea . Froo life-time employment for irrarluateit . Part-time worlt durinir attendance. 32nd year. Write for cataloft. F1NLAY ENGINEERING COLLEGE tOOl-B Indiana Ave. Kansas City, Mo. Flying Model BOYS AUTOGIRO FREE! Scale of an SENT TO YOU Get It Now Free To You! Enter Model Contests This Year With a Giro Get the Biggest Thrill of Your Litt MAKE IT YOURSELF! FLY IT YOURSELFl I-ciitn Ihe woiidiTs of avijillim'.s nfMfst anil most unusual plune — act If. BullJ 111 Fly 111 YOU DON'T HAVE TO BUY IT— YOU GET IT FREE! Ynu can't hity thl'i autoeiro — jou net it FREK — roiiiptlmi-tus of the Nallotial Glider anil Air- plane Nens. THE MOST SENSATIONAL OFFER EVER MADE Never before sueh an ofTer a> tills — reaii TOUpim see what you cet — art now if you want tiiii Giro FREE. MAIL THIS COUPON NOWl National Gliiier and Airplane News. Dept. P.S.D. 370— 7th Ave.. New York. N. Y. Send me tiitf NaUonKl Glitirr luid Airplane Newa montlily for 1 year: and the Model Aiitoiciro eomplete Kit. tiolden lA inirs and A. B. A. Membership Card, without extra chanre. On arrival of the Kit 1 will pay postman $2.50 and the few centu tioetave chanren. My money to be refunded If 1 am not dellithted. (»3.D0 in Canada, f3.&U in foreign cuuntriea.l Name Addretiit City State NewSolesfor9^ in 3 Minutes TTere's a wonderful new money-maker for aKCiits. It's SliL'-.S()l,r, — the aniazinn new discovery that imjis ni-w su!es on old sln>e3 in 3 minutes — at a cost of only 9c! Ilufce de- mand everywhere gives you an opportunity to Make $2 an Hour in full lime or spare time. Just spread StlL*- SOLE c»vcr old. unrn-nut soles with a knife. Fills up holes, cuts and cracks — dries oyer niglit— and then wears like new leather. Kv- erylH>dy liuys. More men and women needed at once 1.) help handle RrowinB husiness. No capital or cxjieri- ence needed. Write quick ior Oultit Offer. ALBERT MILLS, Pres. 8242 Monmouth Ave., Cincinnati, O. MyENTIONS WANTED Patented or unpatented. If you have an idea for sale, write HARTLEY'S Inc., Box 928-D, Bangor, Maine. UNIVERSITY^/CHICAGO HOME-STUDY COURSES Continue your high-achool. college or personal program of education. Teachers, Religious and Social Workers, Men and Women in many vocations arc wstng the 450 courses in 45 different subjects to obtain guidance by cx- ?'rt3for cultural and for practical purposes, he courses yield credit. Ask for free booklet. THE UNIVERSITY OF CHICAGO 651 ELLIS HALL CHICAGO, ILL. m on, the PIANO

ACCOR.DION 

LEARN TO PLAY BY NOTE Piano Violin Guitar Saxophono Organ Uliulele Tenor Banjo Hawaiian Guitar Piano Accordion Or Any Othtr I natrumtnt Rsadlns and playing of music made downright simple by remarttaM* horn* study method pNTERTAIX at parties. ^ Do solo and specialty work in a danre orchestra. Work over the "ilr." Learn 10 play the extremely popular Piano .rcordion, or any other instrument. throuKh 8 thorouRhb" t<?sted method that has ania7i<d over 600,0f)0 people by its utter simplicity. No trtek music— you ptay ■<■- tuMl not«B,!ei»rm-d quickly Hirht n hiime. Nn t*acner Lonou.t exercises. 1 your r leamins Bwraicvn only n few c-enta a day no mattrr which inatrumrnl you Brlwt. Your copy of our!• re« Bimli , describ- inK this enjoyable way of Iparn- inif muair. and a Fre« Drmon- 6tration Lesson ar« yoUDi for th<^ askfnii. SItnpty mall (coupon hfn no«d**d. cash or crMlt. Write trnw. below. Instruments «upp1f(Hl . . . U. S. School of Mu»lc, 812 Brunswick BldK.. New York City. U. S. SCHOOL OF MUSIC, 812 Brunswick Bids., New YoHt City. Send me your amazlne free Iiook. "Musle Lessons in Your Own Home." with Introdunlon by Dr. Frank Crane: also Free Demonstration Lesson. This docs not put me utider any obligation. Name Address Rave you Instrument Instrument?.. DOPING A CAR FOR COLD WEATHER (Continued from paRe 74) wouldn't take a chance. If you're going to use alcohol at all, get the denatured grain alcohol. You never can tell when you'll get into a traffic jam on an extra warm day in winter with the wind just right and have the motor boil a lot of wood alcohol fumes into the car. Even the fumes of wood alcohol can do a lot of damage if you breathe enough of 'em. "As for you. Jack," Gus continued, "if you use alcohol of any kind when you've got a perfectly good radiator that doesn't leak, you're wasting time and taking a chance on damaging your car. You need glycerine or ethylene glycol. I've got 'em both in stock. Neither one will boil away or give you any trouble. Which shall it be?" "How should I know?" asked Jack. "Which is best? Does one cause more cor- rosion than the other or something?" "Far as I can see there's no choice," Gus replied. 'WW the good brands are treated to prevent corrosion. As a matter of fact I think there'll be less corrosion with either than you get with plain water." "W'hat I can't understand," Jack said, "is why we should have so many new fangled anti-freezes on the market now when a few years ago everybody used alcohol and got good results." "The main reason for that," Gus explained, "is the kind of motors we have in cars now- adays. Higher compression, and more power out of the same size cylinders naturally means more heat to be carried away by the radiator. Most motors now run a lot hotter than the oldtimers. .lcohol boils before many modern motors get up to their right running tempera- ture. If you fix 'em so they stay cold enough not to boil away the alcohol, then you're letting yourself in for a lot of other troubles — mostly extra wear caused by excessive crankcase dilution and poor lubrication." "How do you mean fix 'em?" Jack asked. "TE.^VE the radiator uncovered, for one M—J thing, or if you've got a thermostat or an automatic shutter control, adjust it so it doesn't keep the motor so warm." "If you do that, how do you keep the car warm?" Danny asked. "My car is fitted with a hot water heater." "The answer to that is buy yourself a pair of fur lined boots," Gus smiled, "or else put in a heater that works directly from the exhaust pipe. The exhaust stays hot even when the motor is nearly cold." "Gosh!" exclaimed Danny. "I think I'll have a new radiator core put in. What's the sense of fussing around all winter, worrying about the motor freezing into the bargain? Maybe we won't get new cars in the spring and I'd have a new radiator to buy then anyhow." "I never did think much of makeshift jobs," Gus grinned. NEW INSTRUMENT SHOWS WHICH ROOM IS SUNNY Which rooms of a house will be sunny may be determined, even before the house is built, by an instrument perfected in Eng- land. Designed for architects and others, it consists of a base like a sundial and a small ball on a string representing the sun and its rays. By setting the base upon a house plan and moving the "sun" with the taut string along an inclined guide of accurate astronom- ical design, the hours of sunlight for any door, window, or lawn are found at once for any time of the vear. 140 POPULAR SCIENCE MONTHLY