186 



MR. J. B. SUTTON ON THfi 



[Mar. 18, 



rent in the parts is shown in the drawing (fig. 5). It is a well-known 

 fact that when a small bitch tries to accommodate a large Dog, the 

 female often loses her life by rupture of the vagina, and consequent 

 peritonitis. Escaping this, still she may pay the penalty of her lack 

 of [irudence, for the young will be unduly large, and delivery by vice 

 naturales an impossibility. 



Fig. 5. 



The uterus of a Jackal, seen from behind. The rent, at the junction of the 

 vagina and cervix uteri was made during parturition, the young escaping 

 into the peritoneal cavitj-. 



Tuberculosis. 



To superficial observation, it would seem that half the animals 

 dying in the Society's Gardens succumb to this affection. It so 

 frequently happens that if the lung presents a spotted appearance, 

 or on section shows caseous spots of any description, the condition is 

 set down as " tuberculosis." After very careful inquiry the conclu- 

 sion has been forced upon me, that " tubercle " is by no means so 

 common among animals as is generally supposed. In a previous 

 paper, it was shown that Monkeys are rarely attacked by tubercle, 

 and subsequent observations tend to confirm this statement in every 

 particular. 



Three diseases are especially liable to be confounded with the one 

 now under consideration. The precision afforded by the micro- 

 scopical examination of diseased tissues has led to a more rigid defi- 

 nition, and consequent restriction, of the term tubercle from such 

 appearances as the lungs present in lobular pneumonia, or lung-tissue 

 consolidated by pneumonia Avliich, instead of resolving, ends in sup- 

 puration, and lastly, encysted parasites. 



If these three morbid conditions be excluded, then tuberculosis is 



