12 



The most typical ulcer is about the size of a threepenny- 

 piece. Its edges are circular, and raised above the membrane. 

 The centre of the ulcer is soft, and often yellow or black in 

 colour. The other parts of the bowel may be inflamed, and 

 often the inner surface is covered by a yellowish deposit. 

 Two loops of bowels may have grown together. 



The lungs are very often, though not always, solid in patches, 

 and fluid may be present m the chest. The glands are very 

 red in colour in the more acute cases. 



Board of Agriculture and Fisheries, 

 4, Whitehall Place, 



London, S.W. 

 1st September, 1912. 



