288 



INFECTIOUS DISEASES 



90), serous membranes, kidneys and other body organs (Figs. 

 91 and 92). The tnherclos may be very small at first, but as 



FlQ. 91. — The carcass of a tubercular cow. Note the condition of the carcass, and the 

 tubercular nodules on the chest wall, showing that the disease was well advanced. 



the disease progresses they continue to enlarge until finally a 

 tubercular mass the size of a base-ball, or larger, is formed 

 (Figs. 93, 94, 95 and 96). Lymphatic glands may become 



