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No advanced courses have been held, since the number of entries in any instance has not reached the established minimum, but individual students have from time to time received particular instruction on definite problems of Medical Entomology. The collection of preparations for teaching purposes has been considerably Increased, and some select additions have been made to the School Museum. Miscellaneous collection of insects available for special and advanced study has been put in order in a new cabinet.
A successful expedition was made to Romney Marsh during the Easter vacation to study the incidence and distribution of Anopheles mosquitoes there, and to arrange a depot for collecting these and other insects, etc., continually required in the classes.
The report by Dr. F. W. O'Connor, lately Assistant Medical Entomologist, on the expedition to the Western Pacific has been published and distributed. It will be remembered that the main incentive to this expedition was a statement, made on medical authority, affirming the wonderful efficacy of salvarsan in the treatment of filariasis; and that Dr. O'Connor was sent to Funafuti to investigate this matter as the foremost item in a medical survey of the filaria-infested islands in that vicinity. Although his report completely extinguishes any hopes that may have been fired by salvarsan and similar drugs, it supplies a critical and coherent account of the nosology and parasitology of the Ellice, Tokelan, and principal Samoan Islands and will be a valuable guide to future workers in the same field. In the course of his survey Dr. O'Connor assured himself that Acdes variegatus (Stegomyia pseudoscutellaris) is the sole species of mosquito implicated in the dissemination of filariasis in the islands mentioned, defined all the breeding-places of the insect, and showed by a practical experiment how easily it can be controlled. He also had an opportunity of following the early stages of filarial invasion in man through the agency of the mosquito.
The following donations have to be acknowledged :-From Dr. B. R. Neligan, mosquitoes from Persia; from Mr. F. Ware, Indian Civil Veterinary Department, blood-sucking flies; from the Zoological Survey of India, venomous snakes and fishes; from Dr. Tertius Clarke. Malayan ticks attacking man; from Mr. Clifford Dobell, F.R.S., and Professor Miyajama, Japanese Trombinlæ concerned in the dis- semination of Tertsugamushi disease: from Dr. A. R. -Patterson, rats of Kenya Colony; from Mr. A. W. J. Pomeroy, Nigeria, parasitic Orthoptera and their host; and from Dr. G. M. Vevers specimens of warble maggots.
Information and assistance has been given to correspondents in many parts of the world.
30th April, 1923.
SIR,
A. ALCOCK, Professor of Medical Zoology.
Director of Entomology.
-Enclosure 2 in No. 11.
REPORT OF THE DIRECTOR OF HELMINTHOLOGY FOR THE HALF-YEAR ENDING 30TH APRIL, 1923.
I HAVE the honour to submit a Report on the work of my Department for the half-year ending 30th April, 1923.
Staff.-Several changes have taken place in the personnel of the Department during the past six months. Dr. G. M. Vevers was appointed Superintendent of the Zoological Gardens. Dr. J. Anderson was appointed Professor of Medicine in the University of Hongkong, and Dr. Khalil, who for the past three years has been attached for special training in the Egyptian Educational Mission, left to take up an important Research appointment in Cairo under the Egyptian Government.- .I have also to report with very deep regret the death of Mrs. Markhreiter, who has worked, chiefly in a voluntary capacity, in conjunction with this Department for several years. Dr. II. H. Scott and Dr. W. Y. Turner have been appointed as Demonstrators filling vacancies in the Medical Section, and Mr. D. O. Morgan has, by arrangement with the Ministry of Agriculture, been added to the Research Scheme maintained here under their auspices.
Teaching-Two courses of Medical Helminthology, each extending over a& period of three weeks, have been given during the period under review.
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