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which they occasion, and the means of cure. with 500 Ascaris megalocephala, 190 Oxyuris curvicula, 214 Sclerostoma BESIDES THE PARASITES belonging to nematodese, which have already in their proper place as they exist in the respiratory organs of ruminants. lung strongle, or lung worm, is well known to the stockowner, presenting the to observe that the host may harbour more than one species at the same time. serious derangement. Of chief importance among them is the worm which which remain long after the worms have migrated from their habitat. The NEMATODE WORMS IN CATTLE AND SHEEP. Ruminating animals Such a state of parasitism must be taken as altogether out of the common to some cestode worms, both mature and in the scolex stage. be of sufficient importance to require any special notice. indeed, only occurs when colts are grazing on pastures on which there are worm, Strongylus micrurus. This form of parasitism is, however, rare ; Occasionally the respiratory tubes of the horse are invaded by a nematode reference to the circumstances which favour their invasion, the disturbance course, and it is unfortnnate that there is no record of the animal's condition during life. been described as infesting the digestive canal of the horse, there are some invades the breathing tubes and lung tissues, inducing changes of structure calves and lambs infested with strongles, and the parasites will be referred to The different round worms have been described separately, but it is necessary habitually harbour several varieties of round worms, some of which cause others which are referred to by authors as of occasional occurrence. These have not been observed by veterinarians in this country, aud do not appear to armatum, and an immense number of Sclerostoma tetracanthum, in addition An extraordinary case is reported by Krause of a horse which was infested