1924-05-10 — Page 10

THE KEY OF LIFE The Vitamin Content of

HONGKONG TELEGRAPH,

SATURDAY, MAY 10, 1924. (FEATURE

RADIO NOTES AND, NEWS.

BOVO-LACTIN

ESSENCE.

BOVO-LACTIN ESSENCE in addion to possessing a high protein content in a most easily assimilatod form is romarkably rich in Vitamin "B", Vitamin B bosides its woll-known "Anti-neuritic" propartios is largely con- vornod in facilitating the proper performance of the various intestinal functions. It is in this sonso a true vitalizor.

flonco. BOVO-LACTIN ESSENCE is an ideal tonic food possessing marked restorative and reivivifying powers. It has a spacial indication in case of auto-intoxication duo to habitual constipation.

BOVO-LACTIN ESSENCE is admir- ably adapted for the elderly, and for invalids with defective digestions. A cupful as a hot drluk at bedtimes is an excellent romody for insomnia. To children either healthy or ailing it is most beneficial as a hot drink.

In cold Soda Water it forms a most refreshing and invigorating bevorage. Other BOVO-LACTIN

proparutions --

Invalid Bovo-Lactin.

The ideal food of in acute illness.

Bovo-Lactin Chocolate.

A perfect food high biological valve.

Supplied by:-

Messra. A. S. Watson & Co., Ltd., Queen's Dispensary. Colonial Dispensary, The Pharmacy, The China Dispensary, The Kowloon Dispensary.

A permanent roofing at a price competitive with corrugated iron.

"ITALIT"

The perfected red and grey corrugated cement -'asbestos ROOFING

The Inspecting Engineer to the Crown Agents for the Colonles

has conducted 蛋礼 -in- teresting and conclu- *ivo serios of tests an **ITALIT"

and a copy of his report, together with full parti culare of "ITALIT," will be forwarded post free on request,

-

ITALIT

provides the maxi- mum in durability

and safety at a

minimum coat.

Delivered or fixed in any quantity anywhere.

Just ask for a copy of the " ITALIT,” Booklet,

STOCK CARRIED. BY~~~~~~e

SHEWAN TOMES &

HONGKONG & GANTON.

.CO.

SOLE AGENTS

E. HING & CO.

SHIPBUILDING MATERIALS, SHIP CHANDLERS & HARDWARE MERCHANTS.

PHONE CENTRAL No. 1116.

25, WING WOO ST,

Central.

A real cigarette

When we made Chesterfield Cigarettes we tried to give smokers the highest pos. eible quality at the lowest possible price, It didn't take smokers long to discover that Chesterfields had just what they wanted-

That quality taste of choicest Turkish and American tobaccos blended in ex-

actly the right proportions.

You'll say

They Satisfi

The Most Out of One Tube.

vacuum

with

To get the most out of a single placed at opposite ends of the tube, try tho single tube roflox panol, in order to roduce any receiver. Here, with the use of inductive affect upon each other a crystal detector and the vacuum to a minimum. tubo ampliflor, stations up to 500 Tho audio-frequency trans- miles can bo brought in on a loud former should be placod at

back speaker. Even farther distances the

of the can be obtained with the phones. tubo and Cross-wise,

Use of a crystal for rectification the grid torminal near the loft in this connection has proved to radio-frequency transformer and be clearer than the vacuum tube, the plate terminal the other way, bocause of its freedom from This makes oach lead as short as .oscillation and the elimination of possible,

the howling and squealing wo get in rogenorative recaivers.

The parts for this sot consist of: 1 audio-frequency transformer, ratio 4 14 to 1

2 radio-frequency transformers, for roflexing

1 tube socket

1 rheostat

2 variable condensers 23 plate

1 phone jack

1 rubberized panol (about 8 inchos by 10.inchos)

wood baro

5 binding poste Bus wire,

Thus, without tho tubo, battorias and phone or loud speakor, the sot should cost not more than $70 Mex.

TRANSFORMERS,

The radio transformúrs may be either made or bought. If bought, caro should bo takon that they are for rofloxing. A kind that; cah, he attached to the variable) condensers can now be bought. The first transformer, al the loft, is made as follows:

Get two formica cylinder forms 1-16 inch thick, 2 inches long and 2 5-8. inches in diameter. Drill two small mounting holes. on each form, one hole on top and one on bottom, by which the. form, when completed, can be attached to the condenser.

Four more holes are drilled in each form, for the terminals, which may consist of switch points clamped down inside by hexagonal nuts: Terminals 1 and 3 are on top: 2 and 4 below. Two small holes are also made for the wire to pass through. | These are near terminals and 2. Solder end of wire to terininal 3 and wind 60 turns of 28 single cotton, single silk, or double cotton, wire evenly and tightly and solder other end to terminal 4. Wrap il 1-inchstrip of empiro cloth around this winding, and then wind the primary winding on this. It con- Bists of 15 turns, in the same direction as the larger secondary winding. The beginning is sold- ered to terminal No. 1 and the ond to No. 2.

Thon mount on condenser by: attaching with short brass strips to the last plato.

CARE IN MOUNTING.

The second radio frequency transformer is wound like the first, except that the top winding or primary coil consists of 35

The rheostat should have a resistance of 20 ohms.

FOR GOOD · RECEPTION. Tube sockets with contact points as far apart as possible are best, because this helps to cut down the capacity between the grid and plate of the tube.

Another help for better, re- coption is the use of a thin

000000001

AERIAL

O

O GROUND

SECTION).

Broadcasting Company as re- prosenting the British, wiraloss Industry. Apart from being handsome place of furnitúra it,is of unusual technical design, requiring hoither outdoor" wiros nor an indoor frame aortal.

It can be moved from room to room within the Palace and placed in any position without affooting the strength or quality of

The cabinet ruception: Ja fittad with

loud speaker, Within two minutes of tho "Chil- the set arriving, dron's Hour" was being broad- cast in a room, at the Palico.

A lotter from the Lord Cham berlain to Lord Gainford, chair- man of the B.B.C., acknowledging receipt of the apparatus conveya "an expression of his Majesty's appreciative thanks for the Bot specially designed by the chief en- gincor of the company," It further Basures Lord Gainford "of the gratification it affords his Majesty' to feel that the installation in Buckingham Palaco will enable

WATEME

RFT

100000000

Leeeeeees

PHONE

JACK

PHONE

TOP VIEW DIAGRAM, ABOVE, OF SINGLE TUBE REFLEX SET; HOOK-UP, CENTRE: PANEL ARRANGEMENT, BELOW.

quaintance with the marvellous progress which is daily being made in this-branch-of science.

sheet of copper to back up the the King to form a closer ac- front panel. It eliminates body capacity and does away with milch unnecessary wiring. If this is done, be sure to keep it from short circuiting the condenser shafts, and attach all ground and De careful also that second transformer is mounted negative A battery connections at right angles to the first, directly to it.

turns.

urki former

4

the

that both sets of trans.

condenser and

Chesterfield

IGARETTES

LIGGETS & AFFAS TRACTO, TO.

Chesterfield

CIGARETTES

́Latorre & Myrra Toracco Co., U. S. A., Manufacturer

are

..

The cabinet has doors of open- work construction, fitted with semitransparent silk of royal| purple. The glowing valves oan just be seen through tho silk, Extreme care should be taken whilst the sound passes, freely. in wiring. Joints should be through the

into tho silk soldered carefully. Leads should room. bo as short as possible. But all The electrical components, all corners of the wiring should be at of British manufacture, have right angles.

been assembled by crafternen of the B.B.C. undor the direction of the chief engineor. Reception is accomplished by what are known as a capacity earth and capacity aorial-two copper plates-one in the roof of the cabinet, the other near the floor.

The crystaldotoctor may be any, kind on the market, or one you can easily make yourself.

The tube best suited for this set, it has been found, is the UV201-A, with a six-volt storage A battery or 4 dry cells in sorics. A UV199 tube might work just as well, with a tap off the second call of the 6-volt A battery.'

The B battery voltage may vary from 45 to 90 and even more,

OPERATION.

To operate the set, first adjust the crystal detector by setting. both dials at the same point and moving the detector control until

The

There aro six valves-two high frequency," a detector, and thred low frequency."

maintenance of the set will bo undertaken by the oleotricians at Buckingham Palace.

VISUAL TEACHING, a strong click is heard.

Somo ingenious devices for] Slowly turn both dials, at about teaching sauitation to the masses the same positions, until a station were described at a recent meat- is heard. Then turn the grid varling in Bombay. One speaker said able condenser for, stronger-re- he had collected huge audiences sponse and manipulate the ory by carrying through the streets a stal for better reception.

gigantic model of the insect or Keep a record of the dial animal responsible for the spread markings and the stations hourd, of the prevailing disease. A to make tuning in easier later.on.model rat or a model flea was

Clarity and solootivity depend used for plague, a cardboard! on proper.crystal adjustment.

mosquito for malaria, and so on. Bohind the effigy of the disenso- Carrior followed a chorus of men who chanted, in a loud voico and continuously some simple instruc- tion to the crowd, as for example In cholera "boil all drinking wator. The crowds Drst made fun of those processions but in the end they boiled: their drinking water. These dovicas, might be worth trying in Hongkong. They would at least provide the people. Tho set has been presented to with a now diversion, which in hte Majosty by the British itsolf would be a good thing.

KING'S NEW.WIRELESS SET.

GIFT OF SIX-VALVE- APPARATUS. ·

The King has now a wireless rooviving set at Buckingham Palace, and will listen-in to the broadcast programmes.

SYNCHRONOME

ELECTRIC CLOCKS.

THE

"

"SYNCHRONOME System of Electrical Impulse Clooks

consists of

Aa Electrically-Driven Pendulum which operates any number, of · Dials. The Pandalam....... is sombinad with a simple switch 10 that both the time-Keeping - and' switching -functiona

performad automatically idently perfect

In

and MADDE Each dial has only "' one-whesi". moyament behind · B, yet this simple machanism secures uniform and De

without time-keeping

wlading BAY

other sitantion.

upor

They are correct to wiikin hall miauis in alx months. Let us quote

you

complete installation.

SHEWAN TOMES & CO.

Sole Agents.

Tol. 781

키이이아

LUX

It only takes a few minutes to wash your silk blouse, your silk stockings, underwear or any thing dainty and "special"-i you vac LUX

The thin, white, silky Lux flakes, which are made by our own exclusive process, dissolve instantly into a bubbling lather that is as harmless as pure water itself. The lather gently squeezed through the fine fabrica "quickly lossen the ditt-and-a-few-rinsinge make-the garments beautifully clean.

Lux stands unrivalled for washing silk and other fine' Rarmente.

•

Lux is sold only in sealed packets-dust-proof!

AGENTS:- The China Soap Co., Ltd., Shanghal-Hongkong-Tientsin Hankow-Tsinanfu-Moukden

THE DETECTOR.

"That is WQRZ broadcasting the orchestre of Cafe Nouveau Richoa

"You don't say. I thought it was/FPO-U÷P broke

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