PRX SATURDAY, OCTOBER 21, 1922. AR---- 10 DEVELOPMENT] 1 i. 8 BY LIEUT JOHN R. InwIN t U ADE a =) ALTERNATING CURRENT. * In order that this article may be thoroughly understood, in Its briefness, we must refer to the Values of current given In the table of the preceding article. 'These ralues aie plotted + the ao. companying diagram as ordinates (vertically) and the correspond- ing, lengths of time elapsed since the start as abscissas .horizon- taily), and a smooth curve drawn tirough the points enables one to determine what is the value of current for any moment lylog be- tween an two of those which are included in the table. It is to be noted that .he changes of current Pepeat chemselves. Thus in the table the current is the same at 1 second anc 26 seconds after the 8'art; at 7 seconds and 31 seconds, otc. The interval of 24 seconus in this exawple is the "period" of this alternating current. The cur- Tent passer througn a complete "cycle" ot changes 'in this ore Period. A current like that just treated is the same as chat which would to a coil revolving very slowly in & uniform magnetic field. The motion b~: been assumed slow in order that the changes in be fol- lowed with ordinai, direct cur rent Instruments, as explained in the last article. In order to rep- resent the cufrent developed by an ordinary low frequency alter nating current generator we must, however, imagine ie coil to re- vo.ve more than a thousand times more rapidly. Thus the usual A C lighting circuits carry currents whose period is only abcut one- sixtieth of a second. The current basses 'hrough sixty complete cycles each second--that fis, {te frequency is sixty cycles per sec: ond. y The frequency of radio currents is, however, enormously greater than the usual lighting low fre- quency alternating currents. and usually a radio frequency cycle would be completed in one-mil. lionth.of a second to one hundred taousands of a second. be produced in a current attached (Continued in next issue.) "Wave * f ~ APPARATUS DEVICES By RALPH BROWN, RADIO ENGINEER AMPLIFYING TRANSFORMERS. The remarkable results ob- tained in long distance radio com- munication in recent years have been largely due to amplification made possible by the use of vacuum tubes. The experimenter has been at a decided disadvan. tage due to his inability to get witable vacuum tubes. Forty nately this question has now been and satisfactory tubes are now. available. In order to the maximum of results from these tube: as am- plifiers. they must be used with designed transformers. The type illus. trated was specially built to meet © this situation. The primary re. ceives the maximum amount of en «nd delivers it 'undis- torted in wave form and at the correct potential to the grid of the 1\ying tube. The core construction is such that there is little tendency for the setting up of external fields with the resultant ho#'ing in the audio frequency circuit. The distributed capacity of the see- ondary is low, so that the maxi- mum potential is obtained on the grid of the tube. Will readers interested in these radio articles kindly communicate with the editor by mail? | Markets Reports | , GRAIN QUOTATIONS, / Mintreal. Montreal, Oct. 20.--Oats--Canad- fan Western. Np. 2 64 to 65¢; No. 3, 59 to 60c. Flour--Manitoba Spring wheat patents, firsts, $6.50. Rolled Oats---Bags, 90 1bs., $3.90 to $3. Bran, $20, Shorts, $23. INo. 2 red, $1.17 1-4; No. 3 THE long yearlings, $12.75; bulk steers, $9 to $11.50; sixteen loads Camad- ian grassers, $7.50; Montanas to feeder buyers, $6.50 to $7.40; bulk desirable vealers around $10.50; bulk desirable bologna bulls arouml $4.25; bulk stockers and 'feeders, $6.25 to $7.50. Hogs--bulk 170 tb 200-pound av- $9.00 to $9.25; estimated hold-over 2,000. Sheep--4pp fat Western lambs, $14.10; others, $13.75 to $14; {bulk native lambs, $13.75 to $13.85 culls mostly $9.50; . feeders glow; few morning sales about steady; one double 105-pound Washington yearl- ing wethers, $10 to killer; sheep sting to 25¢ higher; heavy fat ewes $3.75 to $4.25; lighter weights up- "| ward to $6.50. - GENERAL TRADE, Toronto, Montreal, Oct. 20. -- Butter -- 27c to 35¢; do creamery 38c to 46¢c; cggs, fresh doz, 43c to 45c; cheese, !b. new 20c to 25¢; ab old 25¢ to 35c; Broilers, Spring 1b. 40¢ to 45¢; Fowl, 1b. 26c to 28¢; Ducklings, 1b. 25c to 30c; Turkeys, 1b. 35¢ to 40c; Apples, basket 25c¢ to 50¢; do. bushel, 76¢c to $1.50; do. bbl, $2.50 to $5; Grapes, 6-qt. 30¢ to 40c; Peaches, vellow, 6-qt. 30c¢ to 60c; do. 11-qt. 40¢ to 90c; Pears, 11-gt. 30¢ to 60c; Plums, 11-qt. 25c to 50c; Jo. prune, 11-qt. 75¢ to $1.00; Quince, 6-qr. 30c fo 50c; do. 11-gt. 50c to 85e: Beets, bag 75¢ to 90c; Cabbage, doz. 45¢ to 60c; Cauliflower, doz. 75c th $1.50; Carrots, bag 75¢ to 90¢; Cel- ery, doz. 40c to 76c; Cucumbers, basket 50c to 75c; Eggplant 30c to 60c; Lettuce, head, box 50¢ to $1.00; Onions, sack $1.50 to $2; Parsnips, bag 75¢ to 90c; Peppers basket 25¢ %o~35¢; do. red 40c to 60c; Potatoes, bag 70c to 80c; Pumpkin, doz, $1 to $1.50; Squash, doz. 76¢c to. $1.25; Tomatoes, 11-qt. 80c to 50¢; Turnips bag 60c to The. ---- Mi .ntreal. per Ib.; cooking butter, 27¢ per Ib. ; oleomargarine, 20¢ per 1b. Eggs--No 1, 36¢c; No. 2 30c; ex- tras, 40c; specials, 52¢ to 53c. Ham--Large size 33c; small size. 37c; cooked, 40c 1b. : hard $1.14%; Corn, No, 2 mixed. ¥ Bacon--Windsgor Loneless, 43¢ per ib; breakfast, 32¢ per Ib. Dressed Poultry--Milkfed chick- ens, 38c to 42c Ib.; broilers, 35 to 38¢; selected chickens, 26c to 28¢c; 36¢c; green ducks 35¢ to 38¢ per Ib. Dressed Hogs---Fresh killed abat- toir stock, $17.50 to $18.50. Flour--First patents, $6.50 per bbl.; sedonds patent, $6 F.0.B. track; strong bakers, $6.10 per bbl. ; winter wheat flour, choice grade, $5.80; broken lots in cotton bags, $5.75 to $5.80. Millfed--Bran and shorts in limit- ed quantities in mixed car lots, $21.25; shorts, $23.25. Rolled Oats--Standard grades, ($3.25 to $3.30 per 90-1b. bag, deliv- ered to the trade. Hay--Baled, per on, in car lots, new crop No. 2 Timothy, $16 to $17; No. 3 Timothy, $14 to $15, delivered to Montreal, ees KINGSTON RETAIL MARKET PRICES a --] 69% to 70%; No. 2 yellow 69% to 71%e¢; Oats, No. 2 white, 43% to 64%c; No. 3 white, 42% to 43c. Rye, No. 2 81c. Barley, 66 to 67c. Timothy seed, $5.50 to $6.50. Clover seed, $15.00 to $19.00. ---- Kingston, Oct. 21st. There has been a considerable change in the local fruit markot during the past week, the prices varying up and down, and plums and melons, for instance, disappearing from the market entirely. Bananas f DAILY BRITIS turkeys, 40c¢ to 50c; ducks, 26c to Creanjery, solids 36¢c Ib.; prints, 37c| * other enterprises that H WHIG. "place in which to live, "Life Insurance serves as it waits," ServingYou and Canada While Life Insurance stands watch over your Home to cover the mortgage; to provide a fund to care for children if you should die, age if you live---it is aidin prosperity. The trust funds formed by the payment of your premiums are invested in Government and mu nicipal securities to build schools, " roads, drains and bridges; to provide hospitals and welfare institu. tions; to establish justice, law and order----as well as being in- vested in mortgages, agriculture, transportation, industrial and go to develop Canada and make it a better your wife and educate your or to support yourself in your own old g Canada's industrial and commercial Buy life insurance for the service &t will render you individually, and the national service will follow. Seek the services of the life insurance representative, and he will advise how your life's program can be now retail at 50 cents, while oranges are to be had in different qualitivs Toronto. from 50c to 90c per dozen. Apples Toronto, Oct. 20.--Heavy steers | have advanced slightly, but the sup- LIVE STOOK MARKETS. : Toronto, -- Toronto, Oct, 20, -- Manitoba wheat--No. 1 Northern $1.153%: corp--No. 3 yellow, 85¢ No. 8 , 84c; all rail, . , 69 t0 62¢, ac- cording to freight outside. Buckwheat--No. 2, 60 to 5c. Rye=No. 2, 62 to 67¢c. : Millfeed freight, bags included; Gren, per ton, $20; shorts, per ton $22; middl- ings, $29.25; good feed tlour, $1.90. : Ontario wheat--No. 2 white, 95 to $7¢, according to freights outside; Ontario No. 2 white bats--39 to 40c. Ontario flour~--ninety per cent. patent, in jute bags, Montreal, prompt shipment, $4.60 to $4.70; basis, $4.50 to $4.60; bulk Seaboard, $4.50 to $4.45. Manitoba fhur--1st' patents, fn cotton sacks, $6.50 per barrel; 2ar patents, $6. : ' Hay----Extra No. 2, per ton, track - Toronto, $16; mixed $13.50 to $14; vad g 3.50 to $14! straw $9, car bg 'Winnipeg. Winnipeg, Oct. 20.--Wheat--No. 1 Northern, $1.02% ; No. 2 Northern $1.01% ; No. 3 Northern 96% c No. 4 No. § 89%¢; No. ¢ 813%¢c; feed 00; track, $1.013%. k 3 C.W., 46%er No. 3 3 re : 40c; No. 2 36¢; rejected, 35%c; track 43%. 3 C.W., 54¥%e; No. rejected and feed, : 1 N.W.C., $207T%; 3 C.W., $2.013%¢; No. 3 C.W. rejected, jLp a $2.06% - $7 t0 37.75 do. good $6.65 to $6.75; do heavy western t0 $5.50; But- cher steers, choice $6 to $6.50; do good $5 tb $8; do. common $4.25 to $4.75; Butcher heifers, choice $6 to $6.50; do. medium $5.25 to $5.50; do. common 4% to $4.50; Baby beev- es $7.50 to $8; Butcher cows, good $4 th $4.50; do. medium $3 to $4: T bulls, good $3.50 to 34; Canners and cutters $1 to $2; Feed- Ing steers, goed $5.35 to $5.50 Stoockers $3.50 to $4.50; Caves, choice $11 to $12; do. medium' $9 to $10; do. common $4 to $6; Milkch cows $50 to $90; Springers $70 to $80; Sheep, choice $6 to $6.50; do. heavy $4.50 to $6; do, yearlings $7 to $8; Lambs $11 to $11.28; Hogs, f.0.b., bid $10.25; do. fed and wat- ored bid $11; db. to farmer, nid $10; Lard type hogs, 50c to $1 less. Light hogs, under 130 Ibs., 2c less per Ib. Buffalo. Buffalo, N.Y., Oct. 20.--Cattle: shippisig steers, $9.50 to $10.50; bute $5 to $13.50. Hogs, heavy $5.35 to $10; mized feed, 139.75 to $9.85; yorkers, light. york- ora and pigs $9.75; roughs, $7.75 to ; stags, $5 to $6. : 36 to $14. 36 to $11.50; off car weights, selects $11.36 $11.50; sows, 39 to $10.50. ' e---- Ago, Oct. 20.--Cattle, des b steers, 313.10; Sugar, ply Is still plentiful at $1 to $1.50 per bushel. There was practically no change in garden produce, with the single exception of tomatos, which have advanced 25c on the bushel. » a Fresh eggs are to be had, but 45 to 50c per dozen is the average price to. be paid for this breakfast varia- ty. Flour has dropped to $4 per hundred, while lard advanced 1 cont per pound. There was no change in the fish division.: « At the present tims, there are no Western oats coming into Kingston, while local oats remain about the same. Hay has dropped $2 per ton. Fraft., Bananas, doz. '.............. Soe Grape fruit, each, 15 2 for 25 Grapes, basket ..... Pennie vein 50¢ Apples, bus. ........., $1 to $1.50 Pears, Duchess, basket ....... 80¢ Pears, winter, 11 qt. basket ,... .7§ - 18¢ to 30¢ serseiiias. 08 tO 10 reese 100 bush. porate $160 Onions, Spanish ......, lbs for 25 Potatoes, peck ......... Potatoes, sweet, Ib. ... mpking, each ...... 10¢ to. 20¢ ssiees 20¢ to 35¢ bus. ............ $1.50 creamery, sre 40 bo 43 or, dairy, Ib. .............38 whey, Ib. ............ 3% new, Ib .. sero 2Be Ares nsensnae | 43¢c dos] ...... 40¢ to 45c ET RE alain, srsees 8%e . Crewe nen aw «8 ng 1b, asesseniiia.. ile Lemons, dos. .... .. .. ..80 to 40 | Lard Oranges, doz. ......... 50¢ to 90¢ ly fresh, dos. ..... §oc carried out even in the event of your premature death. = NEVER HAS ANY POLICYHOLDER LOST A DOLLAR THROUGH THE FAILURE OF A CA - SURANCE COMPANY. Flour, standard, ewt. ........ $4 Steak, round, b. ........ 22 to 25 Rol oate 1b... .... 7. Honéy, 6 1b. pall-. ,. Ie seen innanrariosiies. 286 Folling cuts, qb. ..... Stewing cuts, Ib.. . ,. . .. Deel, Western, cwt, .... 10 to 12% seeee 8:10 10 «8to12 Oleomargarine, Ib. . .... ..25 to 27 [Beet hinds, cwt. sesseamscecas 16 * S-------- Beef, local, It tesnserssenness BE * vvee ses ase vs #210 Pork: % | Loin roasts, Ib.. ..,.....28 to 32 wale Shoulder roasts ,... ., + esse 2s 2.20 |Hog, live weight, cwt ... «+25 to 28 ..12% | Chops, 1b 32 to 35 pol La Oysters, quart ............. $1.00 [Ham, Perch, 1b. ................ 13% Lamb: » MRED. a... SS Carcase, 1b. sretseiaiiniiniaes 3B Salmon, Ib. salmon, 1.. .. .. .18 to 20 White £ah ..%. .. .. 100. 00 Barley, bus. svsssiassseiives Ble a i Corn, ear 18s .. vn innr 9 Hay, baled, ton ........ $13 to Hay, Jawa tit vias 1310 tom ue oie ls tia, baled, ton «i.... $9 to Iw, 10088, ON... 4. iain. Wheat, local ' ; DUR ..viee 95 to ---- 7 HEY oe boot w unwashed... .. .. ..12 to 14 || Horse Ginseng . . 2s 5 es ma «++ 88 por Id ] seein 3 » +s ..33 0 35 SMOKed. ve cove ius... 88 04, Bc vv +... 100 to 16 Hinda'SD,... LAE Chops, Ib. . *ssesesaessnes susss2b vese es essnna 4.30 ool, washed. . .. .... .. .. .18 | Wool, rejects. ... ..". .. . at value | acon ekiny, each... .. .. .. .70 Il seers ais wes $2.00 Ji sheep skins, wp to ...25 | clear.. ., ,, ,.30¢ 1 rendered ., .. «sb | a »., i} 5 I ------------ i A friend % evirybody isa friend | NADIAN LIFE IN- LIFE INSURANCE SERVICE. Gets Results is the oxy-acetylen® wellded by us in a way that prodeces the finest x and strong welding, We can weld anything and everything in hard 'tempered steel or other metal. No use casting metals into the junk pile when welding will save it, sttencciininee,. le) ae