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By Capt. Robt. Scofield Wood (0. F. C., M. C., Croix de Guerre with four formerly Commander ms 187th Squadron, Royal Alr Fore JOTTINGS ON STORAGE BATTERIES. A storage battery like most every- thing else responds very favorably to careful treatment and tonsideration, Its usefulness is prolonged and never Koes out of service except for re- charging when accorded proper freat- ment. In other articles we have dealt rather exhaustively with the various types of storage batteries, their con- struction, operation and uses, This article will be devoted to the maintain- ance and care of the storage battery used for filament lighting. The single element that needs ,re- placing most frequently is a small avantity of distilled water once every two weeks. Remove the vent cap from each cell and pour in just enough dis- + tilled water to cover the plates. Be sure not to overfill the cells as this ‘will lead to all sorts of trouble. In the first place it will cause the acid to bubble out and destroy the rug, car- pet er floor on which the ‘battery is resting and secondly will damage the battery itself ‘by causing short cir- cults, : Use only distilled water. The ordi- nary drinking water will not do as it contains many mineral salts and other matter that are injurious to the bat- tery. Under no circumstance add acid and do not probe down into the bat- tery with mefallic tools. There is no necessity for sticking a screw driver down the vent hole and it is very likely to result in injury to the plates. It fs always advisable to use non- metallic vessels for storing and handling the distilled water. Glass containers, such as Mason jars or milic bottles, which are inexpensive, can be used for this purpose with the best results, While on the subject of filling it should always be remembered that the solution must never be permitted to drop below the top of the plates, If one cell requites more water than the others, it {s probably leaking, in which event a new jar should be in- atallod immediately. Next in the order of recurring adjust- ments necessary on the six-volt storage battery is “charging” or rather “re- charging.” <A battery under ordinary usage should be recharged at least once @ month. If, however, it is subject to a great deal of service hydrometer tests should be made every day or so, When the epecific gravity falls off to 1.100 on the graduations of the hydrometer scale or when the voltage per cell on dis- charge falls to 1,7 volts, it Is time to recharge. If you have a charging device, merely connect the positive minal of the battery to the positive arging terminal and make the necessary negative con- nections, Then start recharging at am- pero rate not higher than starting rate, which you will find on the lead name- plate which {s attached to all batteries. ‘When the battery is bubbling freely, and the hydromoter reading is about 1.215 or the voltmeter reading in the neighbor- hood of 2% volts per cell the current should be reduced to finish rate and dis- connect. All three batteries should show uniform bubbling. If close watch ts kept on the recharging operations the reduction to finish current should be made just before the hydrometer shows 1.215 or the voltme’sr reads 2.5 volts per cell and the charging over the rest of the route be just a nursing process until the proper readings are obtained. Never permit a batter in the course or recharging to become overheated. De- @crette tre ate of charging if necessary. Never subject a storage battery to ex- cessive cold. Remember that a battery when discharged will freeze mucn quicker than a fully charged battery. The freezing point of a discharged bat- ry is in the neighborhood of 10 degrees abor ro and that of a fully charged one at about 35 below zero Fahrenheit. Freezing will burst the jars and split the battery apart. © Just a little care which really takes Jess time than the reading of this arti- ele will Insure your batteries against disaster and your pleasant radio eve- nings against curtailment. Pa THE FUTURE. What is the future of radio? That question is in the minds of everybody interested in this new and highly inter- esting popular pastime. ‘The question is @ broad one and cannot be considered in its entirety. There are too many widely different ramifications for any- body to try to answer the question ‘When people ask that question they usually r to the concerts that are roadcast daily, Radio to many people means a concert or lecture. On this phase of radio there seem to be very few people in the industry who will ven- ture an opinion on the future of concert broadcasting. In this district where the pleasures of the radio concert are less than a year old the question, Is it a “flash in the pan” or has it come to staf? is only a natural one. ‘When men prominent in the industry ve been asked about the future of rere eoitert trosdcasting-and how it will wear with the public they invariably polmt to Pittsburgh where radio concerts are rounding out their sqcond full year and the public in that section is grow- ing more and more enthusiastic every day. To-day the house in the vicinity of Pittsburgh without an aerial is excep- tional. If Pittsburgh's two years of ra- dioimg with its increasing popularity 8 to be taken as a criterion of the fu- uré—radio is here for some little time. ** But on the other hand no one wants to commit himself any further than the Pittsburgh record, so well have to con- jure upathe to-morrow of radio to svit ‘ourselves. ) HUDSON RADIO CLUB DANCE. The first annual dance of the Hudson, Radio Club will be held to-night at Les- Ve Hall, No. 260 West 88d Street Music will be furnished via radio for the dancing. }.] QUESTIONS AND ANSWERS | Harry Cohen, No, 459 Linwood Street, Brooklyn—1. Is a 40-foot single wire eerial sufficient to reach Newark? My eet'ls of the crystal type. 2. Will a gas pipe do for a ground? 3. Can a magna- vox be used 0” @ crystal set? 4. Can ‘the, isulators be connected directly to the poles? 5. If a tuning coll rests on ite base will it ini ! fag of concert . mwitch sufficient and does it qualify for fhe underweiters? Answer—i, No, your > ee THE EVENING WORLD, FRIDAY, APRIL 21, 1922: ‘Trio’ Wesley ence Mulford Fassett Sterling Andrea Sarto. 10 P. M. rlington offictat The W G 1, Schenectady, 31 programme provided through tesy of Hudson, N. ¥.: 145 P.M ‘Kammenol piano solo, Barl Hermance; aerial should he about 100 feet long. 2. Yes, a gas pipe will make a ground but it is forbidden by the New York Board] bara Frietc of Fire Underwriters. Ground on a| Herman jorning.”” water pipe. 3.No, a loud apeaker can| Miss Helen Beeler not be used with a crystal Bet. 4. Yes, your insulators ean be connected direct-| mance; ‘Tank God for a ly to the pole. 5. Whether it will func- | tenor solo, Mr. Bannister; tion or not depends upon what it rests | yfolin solo, Guido Bells; upon. It Is always better to raise it} tone solo, Mr. Hermance; slightly above the table fitting two blocks | from the opera “Atlanta, of wood or bakelite to the ends of the] Miss Beeler. cylinder on which the coil of wire is wound. 6. A 600-volt switch is required by the N. Y. B, of F. sf A Nightly Reader—'I propose to con- | «prijt: e Struk a Aetector unit ap pasbed B Tieleccw re” one Te Bvening World and would Ike to know] 7.45Late news flashes. if an indoor gerial could. be used. If] 7.55—Police reports. 80 would you kigdly describe how it} §.09—Wiorence La Moyne should be erected Anawer—An indoor | dramatic contralto—"The Lull: aerial, of loop type will not give any | (Jocelyn), So: results worth while with this, set unless} “Faust", “Ay from ou are within a few miles of Newark. | Rusticana” However, if you have plenty of room in} sardt, baritone, your attic, you .may try out several] *'Pagiiacci,” ‘Prologue different types of ordinary aerials. I] “Song of the Toreador’ from Personally khow of a set the same as| (Bizet), the one described last Saturday and | Belcher, londay that®is operating on an-aerial | Italian) of two wires twenty-seven feet long that is swung in the attic. Try it out. nister; “Liebestraume,”” nocts Lies Huguepots,” piano solo, Medford Hillside, 7.30—Bedtime story for tenor, Serenade” “The Star" (Rogers). ‘R, Hawkins; New Rochelle, N. Y. wish ‘to make ‘a variocoupler and two varlometers for short wave regenemtive set of one stage amplification, aerial 150 feet, variable condenser .001' M. F. in series with ground. «Please give number of windings of No. 24 D. C, C, wire-on primary and secondary coils of vari Seyi a : riometer tubes of 4 inch: 7.00 P.M —Baseball score: sold unassembled for about 75 cei BR PRE aha odin A hh Anawer—The varlocoupler has about 60 | Cunning Little Jackal,” a bed turns of wire on the primary with tops | for the schildren. taken off ev tenth turn, secondary has about turn: number of turns on the varlometers you refer to will be Umited by the construc tion of the varfometer, Just wind into S the recesses provided for the wits Benedict, nerd abd Agent many turns as can be comfortably | Cunt Farm Bureau, housed. You will find that the stator} £30 P. M.—Musie. and rotar will have in the neighborhood ve ipod ms to 9.30 P. M.—) Gt Arty cor Ait Surps eaane by Caledonian Male Cho Mitchell, soprano; instrumer Mi ; James McCulloch, cello; monde, accompanist; George musical director, 55 to 10.00 P, M.—Arlington 340 Metres - 3.30 P. M. and at 15 minute thereafter—Baseball scores. change. George Smith, No. 408 West 48th Street, olty—"I have a Marvel crystal receivingy set and hear W J Z plainly, but I cannot hear Wanamaker very loud, I have a 15-foot single wave aerial parallel. to the If I put a 30- foot extension at right angles to my aerial will I be able to hear any better? I have a 35-foot lead-in. will not let me break the concrete in the yard. Can I ground my aerial ina box of earth on the fire escape? If not, will I have to take St down? Will variable condenser imi my set Answer—If you get W J Z you should ve no trouble tin xetting the New York station. but it is very doubtful. It is not neces- | gion. sary to have ah outside ground in the city The city Board of Fire Under- writers differs on this point with the Suburban Board of Fire Underwriters. Just ground on a water line, but not through your instrument . your box of earth will not serve as a ground. A variable condenser will improve your set considerably. pease Chane FIELD. VERA CRUZ, April 21.—A drilling for oil near San Cri W J Z (Newark) 360 Metres 11 A. M. to 6 P. M.—Musical pro- gramme ry hour. A. M., noon, 5 P, M. and 10.01 P.M. ast. P. M.—Shipping news. . : oon and 6 P, M.—Agricultural re- superiority. 7P. M ‘Man in the Moon’ stories for children. SEE IT AT YOUR. 7.00 P. M.—‘Welfare Work"’ by Dr, DEALERS Henry R. Rose of > ark. 45 P. M.—"The Kid on the Corner,” , Frank Moore, Rahway Reforma- t by the Solo Quartet, yterian Church, New York Reda’ mpaniat, ‘Quartet’ Rigolet- ‘o,"" Mmes. Sterling and Mulford and Messrs. Wesley Howard a 5 ap Sarto; also "Midnight Hour n the Road’ to Mandala’ Andrea Sarto; duet, "Vieng Mallika’ Lakme” (Delibes), Mm terling and Mulford; ‘Mattin- ata, ey Howard; "The Lass With the Delicate / ling; duet, ‘The Two Beggars, Make Your Own RADIO Our Patterns make the building of radio sof as simple as A BC. ull directions and complete in structions with blue-prints and drawings are included in every pattern. So simple that any oné can understand them. You sa) joney by “building your own, Pattern No. ! Comp'ete Short Wave Regenerative Set Consisting of 5 pages explanatory direction pamphiet, two {ull size Dlue-prints (193 inches). _Com- Pattern No, 2 Detector and Amplifier Units Programme Messrs, stoct of Baby Vehicles i: the city. Strollers from 14.75 Baby Carriages, from 18.98 Gas, ON and Coal Ran Kes and Cookers in great variety, Good Gas Stoves for 100-Piece with any purchase of explanatory sisting of 4 pai niet tion pal two full blue-ps s (ely 4s inches). or on new accounts, 50c envelope, per wet prepaid.. More Than 25,000 Sold in One Month Order Direct ,by Mail Or For Sale at All Radio Stores Contolidated Rad'e.Ca'l Book Co, Dept. 1. 98 Park Place, New. York City RADIO§ NEWS SS “THE 100% WIRELESS i To supply the demand we bave increased the circulation te OVER 175,000 COPIES , the amateur sed the AT ALL WEWSSTAMOS 25¢ the Copy Or Dirset By Mail, $2.50 0 Your camera beget Period Bedroom Suites Chifforobe, large Dre’ Vanity Table—for Howard and Sarto; “Hominy Howard and Liszt, violin solo, Guido C. Bells; baritone solo, soprano page's song : Rudolph Bos- ms—Aria from (Leoncavello) ‘My Star” (Spross); Ernest selections—Aria (in Red Rose of Love,” “April S K DK A (Pittsburgh) 7.45 P. M.—Government market re- ports and a report of the New York ‘M.—Baseball scores, Spring Vegetable Garden,” by My lsndlord| RusH FOR NEW MEXICAN OIL the southern part of the State, has struck gas at a depth of 1,785 feet, it ‘The extension may help, |is reported. There is a rush to the re- * KA“ Ts The Radio Re-~ ceiver with the seven points of 15-9 dimerses F REE amounting to $98 or over for cash f you bring this advertisement with you. | id =e Our 4-Piece Dining Room Suites Closet, Serving Table, Buffet and Ex- tension Table—sell from $450 down to * Flor- ume, 60 metre, the cour- Ostrow, t's Only & Tiny Garden,” tenor solo, Harry Ban urne No. 3 Mr. Garden,” Type Mass,, 360 children, Story of Address . .. sures eces eweees sescemies Call Letters . Application For Membership PRINTED—SURNAMB FIRST. STREET, TOWN, STATE. + Date... ore: ocsccescccces oMsOCation . sumess OOO C SL eee ee eee e ee ee + Ow, THE EVENING WORLD RADIO CLUB sie ees eowwee Receiving Set.........».Broadcasting Set... .....s See aby Song’ carmen’ (Braga), Showers,” intervals and the ie story All ntal nek. red Si time sig- company istobal, in popular See These Suits in Our Window Before Entering the Stores This Sale is for one week, ending Friday, April 28th. Special for One Week Only! All ‘Wool Flannel Suits Blue, Brown, and Gray Shades For Spring and Summer the Flannel Suit is » who like solid colors. Pr ferred by fashionable men, and especially tho: We make a specialty of selling high grade clothes at moderate prices—and we can offer'no better example of the excellence of our tailoring than willsbe found in these Flannel Suits. They possess all the niceties of custom clothes —richness of color, taste in designing and per- fection in fit—and yet the price is moderate. Single and double breasted models, including the port style in several mode! TH AVENUE Bet 15th and 16th Sts. TORES OPEN Yonkers Store—25-29 North Broad way ATURDAY TILL 10 P. M. RD AVENUE N. W. Corner 83d St. Furniture ea ve & | plo 12) China $ ) , Rox Nice Parlor Davenettes || **"'* as Low as 37: | Girls’ Coats 98 B. id Bed, arrans Gemie 5445, and Dresses tp Brooklyn’s Biggest Credit House 219, 221, 223, 225, 227 Grand Street Corner Driggs Ave. $15 Down Delivers $200 Furniture |Tapestry Brussels Rugs {Good Velvet Ru |Axminster Ru | 164, 166, 168 and 170. Smith Street Corner Wyckoff Bt, “12.45 een ven BB PARLOR SUITES ‘n all the latest styles $ And patterns of cov- up tring: From Clothing for All On Terms $1.50 Weekly On a $30.00 Purchase At Our Grand St. Store Women’s Suits 24% Spring Dresses 12% ‘Tricotines, Serges and Satins, Men’s and Young 19° Men’s Suits Ue Boys’ Two 98 Parts Suits Up | ALL ALTERATIONS FREE ur ange from down to $65 Big Line of Refrigerators 8 prices 49 VICTROLAS $5 Deposit Delivers a $100 Victrola Grand st, $25 to$350 and Records at our Store. Prima Donnas ALL STYLES Smit St, $95 to$160 and Kecords at our Open Daily Till 6 P. M. Saturdays Till 9 P. M. you. - Entire 2¢Floor 15 W.34*St (BETWEEN FIFTH AVENUE AND BROADWAY, OPP. WALDORF HOTEL) The World's Largest 2d Floor Clothing Institution IN NEWARK: 807-813 BROAD ST. (Between Market St. and Branford Pl.) “SENIOR” With 1«2 Pair of Pants &TOPCOATS | Positively $10 to $20 Less Than Any Other in N.Y.! Nowhere throughout the length and breadth of Manhattan is there another clothing institution like this! tative brands under one roof than are to be found anywhere else in No matter what price you wish to pay for a garment, no matter what style, fabric, color or pattern you want— you are certain to find it in our mammoth assortments at $10 to $20 less than it will cost” you elsewhere! fe) “saving in rental and huge daily turnover, together with the low margin of profit we operate on, are the reasons why we can give you such Go where the crowds go—to GEORGES the United States. amazing values. Stouts, Short Stouts, Long Stouts Slims, Shorts All Sizes Up to 52 We have built up a reputation for fitting hard- none in New York. No matter what your size or proportion we can fit Ours is the largest stock of extra size garments in this city. 15 W.34" St. Entire 2d Floor—Oppostte Waldort Hot NEWARK Store: Entire 2d Floor to-fit men second to ees ALSO STORES IN PHILADELPHIA AND BUFFALO The greatest variety of nationally’ famous brands of clothes under one roof in America—in a selection .embracing over 30,000 Men’s and Young Men’s STRICTLY ALL WOOL its We display more represen- ur enormous saving in It pays! Exclusively in Nationally Famous Brands of Clothes land2 Pants Sport & Sack Suits in 1, 2,3 and 4 button models from the most extreme to the most conservative. Worsteds, Cheviots, Cassimeres, Serges, Tweeds, Flannels, Homespuns, etc. Pencil Stripes, Chalk Lines, Overplaids, etc. Nothing missing! $07 -813 Broad St. ae