PROCEEDINGS OP SECTION I. 689 



little thick purulent material. In this pus, amongst other bacteria, 

 were, in every instance examined, numerous delicate spirochsetes. 



DISEASES DUE TO WORIVIS. 

 Cystic Stage of Cestodes. 



Hi/datid Ci/sts. — The cystic stage of Tcenia echinococcus of the dog 

 occurs in cattle, sheep, and pigs. Already dealt with. 



Cysticercus tenuicollis. — The cystic stage of Tcenia marqinata of 

 the dog. 



During the three months under review the liver and lungs of more 

 than half the sheep and lambs (in 1,120 out of 20,634) have been invaded 

 by this cysticercus, the organs being absolutely riddled by them. They 

 have been, also, not infrequent in the pig. At this time of the year 

 the ova seem to be ingested by their host, and are found making their 

 way via the liver or lungs into the serous cavities. Their tracks in the 

 liver and lungs — occupied by necrotic debris — are often very noticeable. 

 Apparently the great majority perish during their progress, as it is 

 rare to find, later on in the year, more than a few adult cysticerci. 



Adult Cestodes. 

 Tcenia ovilla is found frequently in lambs. How is it this worm 

 disappears in the adult ? 



Tcenia denticulata (?) of cattle. 



Trematodes. 



Distonia nepaticum (fluke) is found not infrequently in the livers 

 of cattle and sheep from the eastern States. It has not so far been 

 recorded, I believe, for Western Australia. 



Amphistoma corricum is fairly common in the rumen of eastern 

 cattle. Inspector Clutterbuck has called my attention to the fact that 

 so far it has always been associated with fluke in the liver. 



Nematodes. 



Ascaris Snilla is common in the pig. 



Strangyli are met with not infrequently in the lungs of cattle, 

 sheep, and pigs. 



Spiroptera. — Nodules are common in cattle, embedded in the 

 muscles. 



Larval Nematodes in Nodules in Intestine of BtdlocTc. — In one instance 

 the intestines of a bullock were found studded with scattered round, 

 firm, nodules, in which were found larval nematodes. 



OTHER PATHOLOGICAL CONDITIONS. 



During nine months the following interesting conditions have been 

 met with : — 



Malignant (Cancerous) Growths. 



Cancer in the Breast in a Cow (aged). — The udder was affected with 

 a scirrhous mass. The sublumbar and other flands were secondarily 

 affected. 



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