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are supplied in glass tubes, each already mounted ina milled cap, which can be screwed into the holder,where it is firmly held until a refill is needed. Theyare ordinarily made according to the B.P. formula,but other types are also obtainable.

SPOTLIGHT GOLFMANY doctors play golf and some play extra-

ordinarily well, though it is quite likely that thoseget no more amusement out of the sport than theless accomplished exponents. But for all golfers aninvention which enables the game to be playedindoors will have an interest, and remembering theencroachments upon the time of the medical practi-tioner, the new invention styled Spotlight Golfmay have particular attraction. The inventionconsists of an electrical apparatus, the motor detectorbox, to which is attached the ball, while the strikertakes up his position a few feet from a screen. Theresult of any stroke becomes revealed ; it is possibleto know whether the ball has been truly struck ornot, a matter which in the normal game it is onlyeasy to detect at the end of the flight. A record ofall shots played with a full set of ordinary clubs ismade. The face of the cabinet shows the pictureof the hole which is to be played. The length ofthe shot is indicated along the side of the hole bymeans of an arrow travelling the number of yardsmarked which the ball would have reached if playedon an actual golf course, and its position is shownwithin the limits of the fairway by means of a " spot-light "-one player being red and the other white.There are various key lights, and the player whosecorrect turn it is to play is shown by red or greenat the foot of the cabinet. A shot played wide ofthe fairway is shown by a blue light which calls foranother shot by that player. Should the ball finishin a bunker the depth in feet is indicated, and it isonly by playing a sufficiently lofted shot that theball can be properly played out; if this is not donethe ball, indicated by a light, remains in the bunkerand the player has to continue to play until out ofthe bunker and until he passes his opponent’s ball.The shots being accurately recorded a true pictureis obtained of an actual game as played on a naturalcourse.

We congratulate the inventor, Mr. L. J. Simon,on a very ingenious apparatus which is made by theElectrical and Musical Industries, Ltd., 185, Regent-street, London. It seems that there might be amedical use for the invention in providing suitablepatients with interesting indoor exercise.

ILLICIT TRAFFIC IN DANGEROUS DRUGSTHE League of Nations Advisory Committee on

Dangerous Drugs have recently had before them areport on illicit transactions and seizures during thefirst quarter of this year. Clandestine manufactoriesof narcotics have been discovered in Hong-Kongand Shanghai. In the international settlement inShanghai it was found that 682 grammes of heroinhad been manufactured in three days at a clandestinefactory, and a complete laboratory equipment withchemicals was handed over to the Japanese consularpolice. One of the Chinese persons implicated wassentenced to six years’ imprisonment.Some 30 seizures of raw opium from China, Port

Said, and some European and American ports weremade ; the largest consignment, which was con-

fiscated and destroyed, amounting to 2418 kg., wasat Wuhu, China. Prepared opium, mostly in smallquantities in the Far East or in America, was reportedas having been seized in 29 cases. Last year no lessthan 10,885 kg. of prepared opium and dross werereported to the secretariat of the League as havingbeen seized. Of morphine ten seizures were reportedin the first quarter of this year ; the largest amountswere captured at Batavia, Manila, and at Portland,Oregon. Eighteen seizures of heroin were effected,the largest, amounting to more than 6 kg., being atShanghai. Of cocaine there were sixteen seizures,the largest, of more than 12 kg., was at Prague on

the information of the Government of Czecho-slovakia.The Advisory Committee has been considering the

practicability of adopting more drastic measures

for the prevention of illicit traffic in dangerous drugson ocean-going vessels ; and the cooperation ofseamen’s unions for the same purpose was advocated.A report from the secretariat giving estimates ofthe number of addicts in various countries waswithdrawn for further consideration.

CORRIGENDUM.-The method of describing hearingaids for the deaf is stated in the notice which appearedon our advertisement page 2 of May 23rd to becovered by British Patent No. 576986. The numbershould have been given as 376986.

Medical DiaryInformation to be included in this column should reach us

in proper form on Tuesday, and cannot appear if it reachesus later than the first post on Wednesday morning.

SOCIETIESROYAL SOCIETY OF MEDICINE, 1, Wimpole-street, W.

WEDNESDAY, June 3rd.Surgery. 3 P.M. Laboratory Meeting at the BuckstonBrowne Surgical Research Farm, Downe, Kent.

THURSDAY, FRIDAY, and SATURDAY.Laryngology and Otology.

June 4th, 3.30 P.M. Cases and Specimens. 4.30-6 P.m.Discussion. 7-7.45 P.M. Pathological Demonstrationby Col. Hamerton at the Zoological Gardens, Regent’sPark, N.W.

June 5th. 10.30 A.M. Mr. I. A. Tumarkin: Facial Para-lysis. Mr. G. H. Steele : Technique of the Ballance-Duel Operation for Facial Palsy (film). Dr. DouglasGuthrie and Mr. Gavin Livingstone : IntratympanicMedication with Special Reference to Thyroxine.2.30 P.M. Mr. Andrew Campbell: Two Cases ofLaryngostomy. Mr. A. Lowndes Yates: InvisibleScars in External Operation on Frontal and EthmoidalSinuses. Mr. W. S. Thacker-Neville: Radical Treatmentof Peritonsillar Abscess. 5 P.M. Prof. G. Ohngren,(Stockholm), Mr. E. Musgrave Woodman, and Mr.Norman Patterson : Malignant Disease of the UpperJaw. (Cases and specimens at 4 P.M.)

WEST LONDON MEDICO-CHIRURGICAL SOCIETY.THURSDAY, June 4th.-8.30 P.M. (Kensington Town Hall)

Prof. William Wright: The Princes in the Tower.(Cavendish Lecture.)

LECTURES, ADDRESSES, DEMONSTRATIONS, &c.MEDICAL ASSOCIATION OF THE INTERNATIONALCLINIC.FRIDAY, June 5th.-5 P.M. (Wigmore Hall, Wigmore-

street, W.), Prof. and Mme. Joliot-Curie : The Syn-thesis of New Radio-active Elements.

BRITISH POSTGRADUATE MEDICAL SCHOOL, Ducane-road, W.WEDNESDAY, June 3rd.-Noon, clinical and pathological

conference (medical). 2.30 P.M., clinical and patho-logical conference (surgical).

THURSDAY.-2 P.M., Dr. Chassar Moir : Operative Obstet-rics. 2.30 P.M., Sir Henry Gauvain : Surgical Tuber-culosis. 3 P.M., Dr. R. A. Young : Non-tuberculousPulmonary Diseases.

FRIDAY.-2.15 P.M., Dr. A. A. Davis: GynaecologicalPathology.

Daily, 10 A.M. to 4 P.M., medical clinics, surgical clinics oroperations, obstetrical and gynaecological clinics or

operations.SOUTH-WEST LONDON POST-GRADUATE ASSOCIATION.

WEDNESDAY, June 3rd.-4 P.M., Visit to InternationalClinic, Sherwood Park, Tunbridge Wells.

FELLOWSHIP OF MEDICINE AND POST-GRADUATEMEDICAL ASSOCIATION, 1, Wimpole-street, W.MONDAY, June 1st, to SUNDAY, June 7th.—MAUDSLEY

HOSPITAL, Denmark Hill, S.E. Afternoon course inpsychological medicine.-LONDON LOCK HOSPITAL,91, Dean-street, W. Afternoon course in venerealdiseases (open to non-members).-PRINCE OF WALES’SGENERAL HOSPITAL, Tottenham, N. Sat. and Sun.,course in general medicine.-Courses are open only tomembers of the fellowship.

HOSPITAL FOR SICK CHILDREN, Great Ormond-street,W.C.WEDNESDAY, June 3rd.-2 P.M., Dr. B. E. Schlesinger:

Bilious Attacks and Cyclical Vomiting. 3 P.M., Dr. A.Signy : Foci of Infection in the Intestinal Tract.

Out-patient clinics daily at 10 A.M. and ward visits at2 P.M.

UNIVERSITY OF BIRMINGHAM.FRIDAY, June 5th.-3.30 P.M. (Queen’s Hospital), Dr. 0.

Brenner : Interrelations of the Heart and Lungs inDisease.

ANCOATS HOSPITAL, MANCHESTER.THURSDAY, June 4th.-4.15 P.M., Dr. W. J. S. Reid:

Anxiety States.