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Enclosure 1 in No. 19.

Department of ENTOMOLOGY.

Report for the Half-year ending 31st October, 1924.

1. DURING the summer term a short course of lectures on Snakes and their specific venoms, and the usual course of lectures and practical work' in Medical Entomology were conducted; seventy men attended these courses.

2. In the month of July the Department organized and collaborated in a special course, on Malaria for Medical Officers of Mental Hospitals.

The course, which, for insufficiency of space and of spare apparatus, had to be restricted to twelve Medical Officers, was greatly appreciated.

3. Casual assistance was given to several special students during the summer term and vacation.

4. The survey of Romney Marsh, as an anopheles tract free from malaria, was continued in July and August, and several interesting facts were noted for future consideration.

5. A comparative study of the remarkable antimal sensory organ of the tsetse fly has been in progress.

6. The Department has been in frequent and varied communication with Medical Officers abroad and Medical Officers of Health at home, as one result of which the reserve and study collections have been enriched from many parts of Africa and Southern Asia.

7. Mrs. H. A. Adie, a sometime volunteer worker in the Department, has published her interesting and conclusive investigations of the life-history of Hæmo proteus columbæ in Lynchia Vulgaris. These investigations were carried on in Dr. Edmond Sergent's laboratories at the Pasteur Institute in Algiers, where the necessary material was procurable in abundance, and Dr. Sergent has very kindly expressed a cordial desire that such scientific commerce between the two Institutions may be continued.

8. Of the additions to the collections mentioned generally in paragraph 6 the following deserve particular mention :-

(a) A large series of noxious flies, including a fine representative col- lection of mosquitoes, from Nyasaland, presented by Dr. W. A. Lamborn.

(b) A valuable collection of venomous snakes, from East Africa, pre- sented by Dr. P. H. Rawson.

(c) A collection of mosquito-larvivorous fishes, from Singapore, pre- sented by Surgeon-Commander D. H. C. Given, R.N.

(a) A collection of blood-sucking flies from Northern India, presented by Captain A. G. Harsant, R.A.M.C.

(e) A collection of Assam mosquitoes from Dr. W. H. Scott.

(f) Two desiderata for the Museum, namely, a Glauconiid snake obtained through the kind offices of Dr. Andrew Balfour, C.B., C.M.G.. and a Peripatus presented by Dr. C. Strickland of the Calcutta School of Tropical Medicine.

9. Dr. N. A. Dyce-Sharp, in sending for identification some specimens of the larvae of a tiger-beetle known in the vernacular of Northern Nigeria as Fura, remarks that its bite "causes a most unpleasant sore. which takes from two weeks to two months to heal, and is far more troublesome than the sting of a scorpion:"

A. ALCOCK, Lt. Col., I.M.S., retired,

in charge of Department of Entomology.

London School of Hygiene and Tropical Medicine,

15th December, 1924.

Enclosure 2 in No. 19.

Report of the Director of Helminthology.

SIR,

15th December, 1924. I BEG to submit a report on the work of my Department for the half-year ending 31st October, 1924. This work falls into two categories (1) Teaching, (2) Research.

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Teaching.--During the summer term the usual course of Medical Helminthology was given as part of the general course of the School and extended over a period of three weeks. Mr. G. S. Thapar, M.Sc., attended throughout this term as an advanced student qualifying for the degree of Ph.D., in the University of London. The short advanced course held before the War has been discontinued, partly owing to the lack of students, but chiefly due to the great development of the subject which renders the short three weeks' course of little value.

Collections. Considerable additions have been made to the Helminthological Collection chiefly by members of the Agricultural Section of this Department and acquired as the results of the daily visits to the Zoological Gardens for the examination of all animals which die there.

Research. Dr. H. H. Scott has continued his studies on the life cycle of He has Hymenolepis nama in the rat and its relation to the-form infecting man. experimentally shown that infection is direct without the intervention of any invertebrate intermediary. Dr. W. Y. Turner has been engaged upon and has practically completed the description of a Filaria living in the large cystic spaces of the heart muscle of the antelope in Nyasaland. Dr. R. T. Leiper has carried out investigations on the life cycle of Sparganum mansoni and has studied some of the earlier stages in detail. He has also identified from Trinidad a second batch of specimens of Lagochilascaris minor a parasite giving rise to abscesses in man. On the agricultural side of the Department an extensive series of investigations have been carried out by Drs. Goodey, Cameron, and Ortlepp under the auspices of the Ministry of Agriculture. Original work has been published by Mrs. Philpot on the development of Oxyuride and by Miss Le Bas on the effects of Dibothrioce- phalus latus in man. These investigations were done under a grant for research expenses made to Professor Leiper by the Medical Research Council. Dr. Khalil, a member of the British Guiana Filariasis Commission, published during this period an important paper on "The relation of Sewage Disposal to the spread of Helminth Infections in British Guiana.”

-Publications. All of the original papers from the Department have been published in the Journal of Helminthology, which continues to receive an encourag- ing reception.

Staff. The staff of the Department during the past six months comprised : Director: R. T. Leiper, M:D., D.Sc., F.R.S.

:-

Medical Section: H. H. Scott, M.D., M.R.C.P., F.R.S.E.; W. Y. Turner, M.A., M.B., D.T.M.

Agricultural Section: T. Goodey. D.Sc. T. W. M. Cameron, M.A., B.Sc., Ph.D. M.R.C.V.S.; R. J. Ortlepp, M.A., Ph.D.; D. O. Morgan, B.Sc.: A. E. Lewis, B.Sc.

Biochemical Section: I. Hiles, M.Sc.

I have, &c.,

R. T. LEIPER.

PUBLICATIONS IN THE JOURNAL OF HELMINTHOLOGY. Six months ending 31st October, 1924. GOODEY, T. Oesophagostomes of Goats, Sheep and Cattle. Vol. 2, No. 3, 1924. LE ROUX, P. L. Helminths collected from Equines in Edinburgh and in London.

Vol. 2, No. 3, 1924.

GOODEY, T.

Some New Members of the Genus Oesophagostomum from the Roan Antelope and the Wart Hog. Vol. 2, No. 3, 1924. Cameron, T. W. M., and Ross, I. C. On the Identity of the Kidney Worm of

Pigs in New South Wales. Vol. 2, No. 3, 1924. LE BAS, G.

Z. L. Experimental Studies on Dibothriocephalus latus in Man.

Vol. 2, No. 4, 1924. PASSEY, R. D., and BRAINE, J. C. The Size of the Red Cells in Dibothriocephalus

Infection. Vol. 2, No. 4.

SCOTT, H. H. Stages in the Direct Development of Hymenolepis longior Baylis.

Vol. 2, No. 4.

KHALIL, M.

GOODEY, T.

.

GOODEY, T.

The relation of Sewage Disposal to the spread of Helminth Infections in British Guiana.. Vol. 2, No. 4, 1924. Observations on Hyostrongylus rubidus (Hassall and Stiles, 1892), (Hall 1921): from the Stomach of a Pig. Vol. 2, No. 4. A Critical Review of Zebrowski's Preliminary Report on Hog Lung- Worms. Vol. 2, No. 4, 1924.

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