Enteritis in Native Animals. 4 37 



from Gippsland, where it had been captured. The carcase 

 shoAved evidence of very acute diarrhoea, indeed dysentery, 

 having been present prior to death. Post-mortem examination 

 showed intense haemorrhagic inflammation of the greater part 

 of the intestines, commencing about eighteen inches from the 

 pylorus, as small and scattered petechiae, gradually becoming 

 more numerous and ultimately confluent further along the canal. 

 The caecum was but slightly affected, and the inflammation 

 gradually disappeared in the large intestine, the rectum being 

 normal. The intestinal contents were fluid, and mixed with 

 much blood, the result of numerous haemorrhages. The inflam- 

 mation, though chiefly confined to the mucosa, yet implicated 

 to some extent all the coats of the viscus. From the serous 

 surface no nodular appearance was visible, but on washing the 

 intensely catarrhal mucosa, it was seen to be affected with 

 numerous irregular greyish granular elevations. The mesenteric 

 lymph glands were all oedematous and haemorrhagic, especially 

 the colic gland, which was greatly enlarged and intensely 

 haemorrhagic throughout. 



Smears of the intestinal contents showed on microscopical 

 examination innumerable falciform bodies (similar to those of 

 sarcosporidia) to be described later. 



Sections of the intestine examined microscopically show great 

 distension of the smaller blood vessels, especially of the mucosa 

 and very frequent haemorrhages. The villi, and indeed the 

 whole mucosa, are much swollen, and close examination demon- 

 strates the presence of two forms of parasitic cysts, some very 

 large and closely packed in groups, and others very numerous, 

 much smaller, and loosely scattered. There is but little tissue 

 reaction, but the larger cysts are gener.;.illy surrounded by a zone 

 of leucocytes, and some new inflammatory tissue, though small 

 in amount. The larger cysts are almost confined to the deeper 

 areas of the mucosa (Plate LX VI I., Fig. 11), but tlie small "cysts" 

 are distributed fairly uniformly throughout the mucosa, even 

 almost to the apices of the villi, often over considerable areas 

 being entirely unassociated with the large cysts. As these 

 varieties of " cysts " dift'er in many respects they must be 

 described separately. 



