Spirochaetae affectvuy P'uj. 109 



perature with capricous appetite, ten days later, and was killed 

 on the foui'teenth day as it was evidently recovering from this 

 condition. Post-mortem examination disclosed a broncho- 

 pneumonia, with irregular areas of degeneration (caseous) which 

 was evidently the cause of the indisposition. In addition, how- 

 ever, on examination of the mucous membrane of the large 

 intestine a number of nodules similar but smaller in sizb Ito 

 those above described were observed. They were not visible on 

 the serous surface and none were degenerated ; all showed the 

 central depression, and containel a gelatinous material, amongst 

 Avhich bacteria as before, and a few cercomonas could be demon- 

 strated, but no spirochaetae. 



That these nodules were not induced by contagion from the 

 previous cases was proved by the fact that a control from the 

 same litter which had remained in good health, killed ten days 

 later, was also affected with similar nodules. These again con- 

 tained no spirochaetes, but many bacilli and a few cercomonas. 



It may be assumed therefore that whatever may Ije the patho- 

 logical signiticance (obviously not great) of these nodules or 

 cysts, which were probably due to the bacterial invasion, the 

 presence of spirochaetes within their contents was probably 

 accidental. 



In neither of the first two pigs were any metazoan parasites 

 observed though careful search was made throughout the whole 

 of the intestinal tract. It may therefore be concluded that the 

 definite eosinophilia present in each was probably due to the 

 spirochaete invasion of the intestinal cysts described. 



