POST-MORTEM EXAMINATION 49 



has been given, when we have found that haemorrhages, 

 and even superficial ulceration, may occur. In some 

 cases, however, the mucosa is quite pale and anaemic. 

 The rectum frequently shows transverse markings, and 

 is often congested. The lymphatic glands are usually 

 enlarged ; but are rarely so to any extent, as may be 

 the case in tuberculosis. They are more or less pig- 

 mented, and when cut into the pigmentation is found 

 to be especially marked in the medulla. An oedematous 

 condition of the glands is present, and on section a 

 watery fluid exudes. 



From the above it will be clear that, when well 

 marked, the lesions are easily appreciable to the naked 

 eye ; but on post-mortem examination of a suspected 

 case frequent scrapings should be taken throughout the 

 length of the ileum and large intestine. In several 

 cases the authors have been able to isolate the bacillus 

 in pure culture when apparently there were no lesions, 

 and when half an hour's search was necessary to find 

 an area showing any bacilli ; so that in a doubtful case 

 cultures should be made on the special media. The 

 ileo-caecal valve and adjacent lymphatic glands should 

 be examined most carefully, as these are the situations 

 in which the disease is most frequently found in very 

 early cases. 



In some naturally infected animals we have observed 

 a fatty condition of the liver, a condition that may also 

 be found in cases of tuberculosis. 



In the post-mortem appearances of sheep there 

 appears to be nothing to distinguish the lesions from 

 those occurring in cattle. The condition is of sufficient 

 interest to warrant the quotation, m extenso^ of the 

 descriptions of the cases investigated by Stockman, 

 and by MTadyean, Sheather, and Edwards. 



The sheep forwarded to the Board of Agricul- 



4 



