The blood count as an indication of successful operation Chemical work Substitution of the Sudan 60 EOSINOPHILIA IN BILHARZIA DISEASE AND DRACONTIASIS No. Cases 5 Sudanese soldier, Khartoum 6 Sudanese soldier, Khartoum There being, so far as I am aware, no other statistics with which to compare these results it is hardly worth while, with so few cases, to express the average percentage of eosinophiles or to discuss the relative numbers of the other forms of leucocyte. One point may, however, be raised. It is often a difficult matter to say if the whole of a guinea-worm has been extracted. Might the percentage of eosinophiles be taken as a guide in such cases ? I have not been able to follow out a case through all its stages, but the results obtained seem rather suggestive, and if this be so the differential leucocyte count would have a practical and useful bearing. It will be seen that Case 3 and Case 4 gave a much higher percentage of coarse-grained eosinophiles than did the case in London. Further observations are indicated to decide the usual amount of eosinophiles which one may expect to find in dracontiasis. I am much indebted to Dr. J. B. Christopherson, Omdurman, and to Captain Cummins and Sadek Effendi, E.M.S., for kindly placing suitable and uncomplicated cases at my disposal in the military hospitals at Omdurman and Khartoum, and in the Prison Hospital, Khartoum.

Remarks Percentage of various Leucocytes A Eosino¬ philes Double infection in the arm.

One worm wholly re¬ moved and a portion of the other three weeks before examination. Pro¬ bably malaria present In foot. Worm supposed to have been removed, but ulcer and induration per¬ sisted. Probably malaria Polymorphonuclears Lympho¬ cytes Large mono¬ nuclears 6-4 38-6 28-8 26'2 Basophiles 10-8 27*8 39*6 21*8 0*6 2. Chemical. Nature No. (a) Analysis of alcoholic liquors . . . . . . 6 (b) Toxicological . . . . . . . . . . 3 (c) Medical Jurisprudence apart from (b) . . . . 1 (d) Plant analysis (Economic) . . . . . . 1 (e) Water analysis . . . . . . . . . . 1 (/) Milk analysis . . . . . . . . . . 1 (g) Soil analysis . . . . . . . . . . 2 As regards (a) it has been shown that substitution is practised, cheap made-up spirits, so-called brandies and whiskies, being manufactured. The toxicological cases (b) were not of any special interest, though in one instance arsenic in the form of the yellow orpiment mixed with sulphur, was detected. At the same time these cases involved a great deal of labour. This will be apparent when it is stated