Fasciolopsis buski and Gastrodiscoides hominis are recorded as common human infections in Kamrup District, Assam, where the examination of 221 faecal specimens from different localities gave an average infection rate of 59·7% with F. buski and 41·2% with G. hominis. In individual infections G. hominis may occur in very large numbers; 989 specimens were obtained on one occasion by means of soap water enemas which are effective in removing these worms.

Trichinosis is a disease which is characterised by profound absolute and relative variations in the leucocyte ratios of the circulating blood, more particularly a marked eosinophilia, and in moderate cases, concurrent neutrophilia (van Someren, 1938). It is obvious that these changes in the peripheral blood are the outcome of disturbances in the development of the precursor cells of the haemopoietic system, especially in the bone marrow; the lymphocytogenic tissue in the spleen and lymph glands does not appear to be so markedly activated, except in very severe cases or late in the course of the disease.

Hymenolepis microps is a well known cestode inhabiting red grouse Lagopus scoticus, blackcock Lyrurus tetrix and capercailzie Tetrao urogallus in Europe. Recently the presence of this worm in America has been recorded by Jones and in Canada by Clark. In both cases the host was the ruffed grouse, Bonasa umbellus. It is a species which is easily recognisable because it possesses a very large cirrus sac in the mature part of the worm which passes unchanged into the gravid segments. It is found in grouse in the British Isles mainly in the summer months and then it occurs in enormous numbers. When the gut is opened the strobilae appear as a thick rope, being tangled so closely that it is very difficult to obtain a complete specimen.

A new species of amphistome cercaria from Planorbis exustus in Cachar District, Assam, is described.

Feeding experiments with the encysted cercariae to two calves and a pig proved negative.

It has been established that a concentration of ·001% of phenyl isothiocyanate is sufficient to kill the cysts of the potato strain of Heterodera schachtii when they are kept submersed in it for a period of three days or longer.

In view of the spread of potato eelworm (Heterodera schachtii) in England and Scotland in recent years, it was decided in 1935 to examine farm soils in Jersey to ascertain if these were free from the pest. In three seasons, 1935 to 1937, 180 soils, the majority from fields which had grown potatoes for 10 or more consecutive years, were tested and all of them proved to be free from potato eelworm. These results, together with observations of numerous growing crops, indicated that the Island was substantially, if not entirely, free from the pest.

The effect of calcium and ammonium chloroacetates in increasing the yield of potatoes grown in Ayrshire fields infected with Heterodera schachtii is demonstrated.

From the examination of roots of treated and untreated plants it is believed that this increase in yield is due to a reduction in the eelworm infection, and from hatching experiments this reduction is thought to be the result of the action of calcium chloroacetate in retarding and reducing the hatching of larvae from the cysts.

Continuing the work on which a paper was published by the writer in the Journal of Helminthology, April, 1937, it was decided to concentrate on calcium chloro-acetate in the 1938 field experiments on soil treatment for the control of the potato sickness associated with Heterodera schachtii.

Tests were made at five different centres in the counties of Glamorgan and Monmouth with amounts equivalent to 3 cwt. and 5 cwt. to the acre.