62 



I'ori.Tin DISKASICS AM) llIlilR TRKAT M KNT, 



Still another \cr\- important jMece of post-mortem evidence 

 is iKund if tin.' intestines and {hv mesenteries are dotted with 

 these roiindrd mxhdf-- as shown in iig. 5. 



Fig. 5. Intestine and nusenleric's of a fowl affected witli 

 tnbercnlosis. (After Ward). 



The hmgs are very rarely affected and then usually by the 

 infection spreading from the liver on to the adjoining lung tis- 

 sue. All this agrees witli the fact previously stated that fowls 

 are most easily infected through the digestive tract. Alteration 

 of the hones, joints or other organs occtu- much more rarely and 

 usually only in the most advanced stages of the disease. 



