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PAGE 6. The secondary is wound with 50 turns of 24 gauge DOC wire on a ”6-inch diameter. It is desirable to space the turns '1')“ the thickness of the wire used. 0 primary of this transformer is wound with 50 turns of the same site of wire directly on top of the secondary. If the secondary wind- ing has been spaced, the primary winding may be wound in the spaces between the turns of the secondary. This number of turns in the pri- my will probably be‘great‘er than As mentioned in Part One, the sin- gle tube reflex should be built to fit the particular amplifier tube that is used. This applies to the reflex transformer, shown as T2 in F182: necessary. but the exact number will v.7, slightly under different cir- cumstances and for different. tubes, and mug}. bu dqlerrpiped by exper- AI_A__ 69M.“ "the [method for this de'ter- mngation i_s giv‘en )ater, “'71â€"‘11; fining tuning transformer, shown as T1 in Fig. 2, is made as foilowsz The secondary is wound with 50 turns of 24 gauge DOC wire on a 3%-inch diameter. These turns should be spaced by the thickness 0! the wire. As it is this coil, which, in coniunction with the variable condenser, is chiefly responsible for the selectivity of the receiver, it is well to use special care in its con- struction. _ If the winding is to be on a card- board core, the cardboard should first be thoroughly dried. It should then be covered inside and out with a thin coo; of shollac‘or collodion l___ LA with 50 turns of 2!: gauge DCG wire on a 3%-inch diameter. These turns should be spaced by the thickness at the wire. As it is this coil, which, in conjunction with the variable condenser, is chiefly responsible for the selectivity of the receiver, it. is well to use special care in its con- struction. If the winding is to be on a card- board core, the cardboard should first be thoroughly dried. It should then be covered inside and out with a thin coat of shellac or collodion and should be allowed to dry be- fore using. 111 some near-by phone station. Do not be disappomted if the receiver "howls" a bit a tirst. The howling may usually be removed by adjust- ing the detector, or by reversing the A. l“. transformer leads. If everything is working properly, turning up the comlenser (34 should make the signals louder until oscil- lation starts and distorts the sigâ€" nals. The primary of the reflex transformer '1‘”). should then be ad- justed by taking off turns of wire until the tube will not quite oscil- late when the signals are tuned in at their loudest. (Copyright, 1924, by The Bonnet-Brown Corporation, Chicago) RADIO QUESTIONS AND ANSWERS “JUNIP- J. 1).. F. $335.: “1 am trying to‘ nnntrallzc a Mentl‘udync rccpivm; but. when the filamvnt 1s out 111 the first tube. everything is cut. out. Al- on thn volume is not good now. “Will it be better when the set is bal- timed? f Enthusiastic looting of an: Decide '8“. ‘ ' nblicity given lie or no p . wgasl: big crowd on .haud, 3m! :33: time was wasted an get .115 m 'ness. .. to bus: officers w e . e ‘ - (nilnwing Single Tube Reflex Receiver following SINGLE TUBE REFLEX CIRCUIT FIGURE 2 Constructional Details y R. I. SHERRILL (Radio Engineer) of Hockey ido on Sen- (Pm Two) A still better coil may be made by winding the wire over wooden strips placed symmetrically about. and running the length of the cardboard core. The advantages and details of this type of winding have been described in a previous article. The primary winding consists of 10 turns of 20 gauge DCC wire wound over the lower half of the secondary eoil. It is well to put a layer of paper around the second- ary before winding on the primary. The primary winding should be spaced so that it evenly covers the lower half of the secondary. The connecting of the difl'erent parts is comparatively simple if the wiring diagram is followed closely. The fixed condensers C2 and 03 are by-pass condensers of 0.001 mfd. capacity. _ vwr "V "U - When tho receiver is completely assembled connect up the batteries otc., adjust thocrystal detector. and with (1’5 in the zero position, tune CRYS YAL‘ DETECTOR Farmers Urge The: Government Pay 100 Per Cent of Line Cost. Impending reductions in the rates of Hydro power in the rural districts were announced, Wednesday of last week, b Sir Adam Beck to the mem- bers o the Agricultural Inquiry Committee of the Ontario legisla- ture. The lower rates were declared by Sir Adam, to be the result ol» the Ferguson Government’s legisla- tion of last session, bonusing rural secondary, as well as rural primary lines by fifty per cent, and it was said they would go far towards meeting the views of the agricultur- al community on the matter of cheap power. , _ _ ,, ________ i Ulltjuy yu vv LI; ,Views of farmers as expressed through half a dozen speakers were essentially the same, namely, that Hydro should be made available to the farmer by the government upon a more generous plan. An increase of bonuses to both primary and sec- ondary lines. Exception was also taken to the 20 year contract to which farmers, at present, must ob- ligate themselves. ”ID-V v- A further plea was made for greater local autonomy, both in the matter of constructing lines, and in the matter of a group of farmers being given power, which is now given to municipal corporations, of making contracts for the sale of power from their plant, within their own district, where such contracts are approved by the Ontario Com- mission. (The Hamilton Herald) At the recent, meeting of the On- tario Municipal Electrical Associa- tion, Sir Adam Beck complained bitterly of attacks on the Ontario Hydro Commission and pin-pricking criticism of himself as_ its chair; man, and he threatened to resign if such attacks and criticism continue. The resolution of confidence in Sir Adam. which the association unnanâ€" imously adopted, probably had the efl‘et of soothing his ruffled feelings. What he had reference to must have been the charges made by his former secretary, E. (L Settell. in a letter addressed to himself and in- tended for his eyes only. These are the only charges against the Hydro. Commission or Sir Adam which, so far as the public knows. have re- cently been made. But it is rather odd that Sir Adam should be so much wrought up over what Settell wrote that he threatens to resign. Settell’s charges might never have been made public had not Sir Adam himself demanded that they be pub- licly investigated. And Settell was one of his own subordinate officials. The onl_ persons likely to be af- fected by Lir Adam’s throat are Hy- dro officials who, like Settell, have formed the habit of spying on fed- low officials and taking notes of lit- tle episodes which to them look sus- piciousâ€"notes which might be of service as hlackmailing material some day. This may he the sort of pin-pricking which has got on Sir Adam’s nerves. WALKERTON GIRL Found Unconscious By Roadside South of Townâ€"Forced into Au- tomobile.â€"Rememhers N o t h i n 9 After Liquid Forced into Mouth. SIR ADAM’S THREAT vic‘rm or ATTACK O. A. 6.. Profâ€"asset. Thinks. Science Should Have Doomed Ion. That in order to facilitate scien- tific research for the benefit of manâ€" kind, those convicted by the state to pay the death penalty should in- stead be obliged to become the sub- jects on which scientists might make their experiments, was one 01‘ the suggestions advanced by Proâ€" fessor Dean of the Ontario Agricul- 'tural College, Guelph, in his address Monday evening to members of the Woodstock Rotary Club, who had as their guests the leading farmers of the community. ‘ A--‘- 1km]. n U1 b“‘-l vulllllbul¢uv - Professor Dean pointed out that, a! definite solution of the action of treatments could not be preperly evolved by using rats and guinea pigs as the subjects of investigation, since the results had a different ef- fect than they would have upon a human. This difl‘erence, he stated. was a perplexing one to solve, and the difficulties in this connection would be overcome when human be- ings were experimented upon. “I believe that’s the only way to solve the problems that confront the sci- entistsfi‘ he stated. _ ‘ “â€"Aâ€"l W‘IU‘DW, "U uwvvu. A mild outburst of laughter greet- ed Professor Dean’s suggestion, but from the remarks which followed, it was quite evident that he was in earnest. PRACTICAL JOKE KING DEAD 0F APOPLEXY Dal I UUUUU “The four sides of the dairy in- dustry” was the subject on which Professor Dean addressedthe gath- ering, and it was when dealing with the value of milk as a food product, set forth by ;he scientists, that he "‘dvancod this suggestion. New York Rocked With Mirth at Some of His Famous Hoaxes. Brian G. Hughes, who made the practical joke famous, died Monday of apoplexy at his country home in Monroe, N.Y. He was ‘75 years old. The city rocked w‘ith civic mirth at two of Brian Hughe‘s jokesâ€"they were his most famous hoaxesâ€"be»- cause they took the wind out of the sails of two very dignified instituâ€" tions, the Horse Show and the Cat Show. Seventeen years ago he solemnly entered a horse for the New York show, the plus ultra event of fashionable horsedom. The horse was a nag Hughes had borrowed from a horse car, and he entered it as “Pnldekah Orphan, sired by Metro- politan and Damned by Electricity}: Puldckah got. through sevei‘al trials and almost reached the ring, but a canny judge happened to mull over the name and malized what it meant. But Hughes and tho tmm had the laugh. Hr. had better luck with Nicodeâ€" mus. a eat of the genus Bowcrius alleyeisis. He houmit Mick for a (limo, gave him a feed and a bath and mtornd him in the rat, shnw at Madison Square Gardrn. A fnnlman brought Mick irn cream and fried chicken, and tlw cat‘s prior was fixrd at $2,000. Ho took so many prizes that a woman complained that the judges worn showing partiality. Others clnmonrmi for a vhunoo to buy Nico- demus. At the proper mommt, Htlglws vxpnsml his own hoax and addod tho. furtlwr information that Niqodemus‘ name was mu, avw' phme. Hughes, in bathing, “found" the trea- sure. There was nearly a panic among the haulers to grab the bul- Better Rubber Footwear at the Regular Price If RHINO Rubber Foot- wear wern’t better-il' it didn't wear longerâ€"we would not support the iron-clad guarantee that goes with every pair. These facts hold good with all RH! NO Rubbers. Note the Protector flap on rubber shoe illustrated. It is an exclusive. patented RHINO feature. It efi'ec- 3!} “ Compare The Wear" Wm. Brigham lion which was brass. Unghes his friends were arrcsmi for exploit. 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