THE URINARY ORGANS 249 



they are not diagnosed until the post-mortem examination is 

 made, and it is the difficuhy of making a certain diagnosis 

 which is at present so hard to overcome. 



Fig. 159. — Kidneys cut open to show Calculi m situ. 

 (The patient from whom these kidneys were taken was only four years old. ) 



In the patient from which the kidneys shown in the above sketch wete 

 taken, the animal (a bulldog) was only four years old, and showed no 

 signs whatever of kidney trouble, dying from pneumonia. 



