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PUBLIC RECORD OFFICE, LONDON

ALLY WITHOUT PERMISSION OF THE BE REPRODUCED PHOTOGRAPHIC-

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During Dr. O'Connor's absence, I have had temporary assistance at intervals from Lieutenant-Colonel W. P. MacArthur, R.A.M.C., Director of the R.A.M. School of Hygiene at Southport, and from Mrs. S. L. M. Connal, Assistant in the Medical Research Institute at Lagos. These distinguished workers gave me great assistance in the practical work of the class, and I consider it a great source of strength both to the Department and to the School to be in touch at every oppor- tunity with the working staff of kindred institutions, especially of overseas institutions.

During the period in report, I have conducted two courses of lectures and practical demonstrations in each of the subjects of Medical Entomology and the Medical Zoology of Vertebrates.

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In November and December, Lieutenant-Colonel Clifford Gill, I.M.S., Chief of the Punjab Malaria Bureau, carried on experimental work in malaria infection and the conditions that influence it in Anopheles, and in January and February, Mrs. Connal was also engaged upon experiments with mosquitoes.

So far as conditions and opportunities have permitted, we have continued the operations, referred to in a previous report, which have as their aim the prepara- tion from infected Anopheles of an antigen for serological diagnosis in old cases supposed to be malarial.

Attempts to infect Stegomyia fasciata and Theobaldia annulata with micro- filaria bancrofti were unsuccessful,

An attempt to infect Theobaldiq annulata with the parasite of benign tertian malaria was unsuccessful.

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A very great deal of preserved material for teaching purposes has been received from Dr. W. A. Lamborn, of the malaria bureau at Kuala Lumpur. Some materialTM has also been received from Dr. H. P. Hacker, of the same bureau. From Dr. I. D. Gimlette, of Kalantan, we have received another collection of snakes and venomous insects. Dr. Malcolm Smith, of Bangkok, has presented a fine series of authen- tically named sea snakes from the Gulf of Siam.

Dr. J. R. C. Stephens, of Northern Nigeria, has sent specimens of mosquito larvae, and Mr. A. W. I. Pomeroy, of Southern Nigeria, specimens of moths with urticating hairs.

From East Africa we have received Glossina pup and coloured drawings of local mosquitoes, presented, respectively, by Colonel G. E. F. Stammers and Dr. A. G. Eldred.

Mr. Malcolm MacGregor has presented several choice specimens of larvæ, and to Colonel S...P. James we are indebted for several consignments of Anopheles maculipennis for experimental work. Surgeon-Commander J. Stoddart, R.N., has contributed a specimen of rice attacked by Calandra orgzœ.

Dr. O'Connor has sent home some collections of insects from the Indo-Pacific (which have unfortunately been much damaged in the post), and, a specimen of a coconut-palm well, such as is used for the domestic needs of the inhabitants of some of the smaller islands of the Gilbert and Ellice group in the absence of any other source of fresh water: these coconut-palm wells, dug in the trunk of the living palm, serve as breeding places for the Stegomyia mosquitoes.

I have, &c.,

A. ALCOCK, Professor of Medical Zoology in the London University and Director of Medical Entomology in the London School of Tropical Medicine.

To The Secretary,

Seamen's Hospital Society.

SIR,

Enclosure 2 in No. 1.

London School of Tropical Medicine, Endsleigh Gardens,

Euston Road, N.W.1, 7th June, 1921.

In the absence of Professor R. T. Leiper, Director of Helminthology; who has been away in British Guiana since last March, I have the honour to present a report on the work of the Department for the past half-year.

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The General Course of lectures and practical laboratory work in Helmin- thology was given by me during the Spring session, and I am now engaged upon the same course in the present session.

During the period under review, four advanced students have been working in the Department. Two of these, Mr. A. J. Hesse, B.Sc., and Mr. R. J. Ortlepp, M.A., are working for Ph.D. degrees. Mr. Hesse has now returned to Edinburgh University, where he is taking up a special branch of helminthology,

Dr. Maitland, the Duncan medallist of last session, is doing advanced work with a view to taking his M.D. in tropical medicine at the end of the year.

Mr. F. Ware, Superintendent of the Civil Veterinary Department in Madras, who has been an advanced worker for the past four months, prepared material and wrote a thesis "On some members of the Family Dicrocoelida occurring in Domesticated Animals." This thesis was accepted by the Examiners of the Royal College of Veterinary Surgeons, and he was admitted to the Fellowship of the College in May last.

Grants in aid of special inquiries have been made by the Medical Research Council, the Ministry of Agriculture, and the British Medical Association.

Dr. M. Khalil and Dr. C. U. Lee, who have been for the past nine months engaged on research work in the Department, have accompanied Professor Leiper to British Guiana, as Research Assistants to the Expedition.

Miss M. Turner, M.Sc., has continued her work on the eggs of helminths and the diagnostic significance, and has extended the series of micro-photographs, illustrating the various eggs that may be met with in the fæces of domesticated animals,

In addition to the above work, Miss Turner has been conducting inquiries into the life-histories of two of the most important helminths which affect domestic fowls Heterakis vesicularis and Syngamus trachealis. The inquiry is not yet complete, but several interesting, and as yet unrecorded, facts have come to light which may have some bearing upon the prevention of the diseases which these Dr. T. Goodey, who has been working upon the nematode diseases of clover at the Rothamsted Experimental Station, came from there to work in this Department last January. He has completed his investigations upon the index of susceptibility of the various species of clover to the eel-worm (Tylenchus dipsaci), and is publish- ing his results shortly,

worms cause.

He has also taken up the studies of the life-histories of some of the more important nematodes affecting sheep and cattle, and is at present undertaking a series of experiments with a view to finding out the mode of infection in the case of Trichostrongylus instabilis of the sheep.

Mrs. Philpot, M.Sc., is continuing her work upon the development and mode or infection of Oxyuris vermicularis and Trichuris trichiura.

Mrs. H. M. Williams, who is a voluntary worker, is continuing the compilation

of a guide to the location of medical periodical literature in the chief libraries of London and the Provinces. The incidental expenses in connexion with this work are being borne by a small grant from the British Medical Association.

I have continued the systematic examination of all the animals which have died in the Zoological Gardens, Regent's Park, and have obtained many rare and new forms of helminths, and also much valuable material for the study of life-cycles and the migrations of parasites within their hosts.

Mr. R. J. Ortlepp and Mr. A. J. Hesse have assisted me in the collection of the above material, and have thereby gained valuable individual experience of the various groups of helminths.

From a strain of Ancylostoma ceylanicum, which I obtained from a leopard last July. I have been able to work out the life-cycle of this parasite both inside and outside the body. I have published a short note of my findings in the Proceedings of the Royal Society of Medicine for June, 1921.

I have, &c.,

The Secretary,

Seamen's Hospital Society,

Greenwich.

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G. M. VEVERS, Assistant in the Department of Helminthology.