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intestines of the pig, and is only distinguished from the variety which is com- A nematode of considerable size, Ascaris suilla, is sometimes found in the quickly falls exhausted. As to the degree of prevalence of the echinoryncus in in this country. TKICOCEPHALUS CRENATUS is not uncommon in the cseclum and large Two rare nematodes of small size, ^sophagostoma dentatum and Globo- long, and as thick as a swan quill, inhabits the duodenum especially, although cephalus mucronatus are referred to by some writers, but they are not recognised contain embryos in a well developed form ; and, according to Leuckart, if they time, it exhibits signs of pain, groaning and restlessness being the chief it is found in other parts of the canal, sometimes in the large intestines. It small intestines of the pig. The worm very closely resembles the Ascaris symptoms. Probably the affected pig will feed with the others, but shows attaches itself to the mucous membrane by the aid of its armed head, making marked. The animal becomes emaciated, and in the morning, before feeding be introduced into the digestive canal of the pig, they are rapidly developed, worms exist in the intestines, the effects on the pig's constitution are very irritability by biting them if they molest it ; and, if attacked in return, it mon to the sheep by the presence of small spines on the spicule. The eggs lumbicoides of man, but is more slender. and aquire the adult character in about four weeks. 8 numerous punctures, which are indicated by small swellings. When several detected in pigs from the United States ; but even if it exists largely among pigs in this country it is not likely that it would be looked for. swine in this country it is difficult in the absence of direct evidence to form any opinion. The parasite is well known in France and Germany, and has been