Diseases of the Nervous System. 251 



there Is an unmistakable desire for solitude. If the eyes 

 at this period are closely observed, a vacant expression 

 will be seen in them ; and immediately they meet the 

 gaze of the observer they are dropped in a weary, sleepy 

 manner. 



As the disease proceeds, other and more marked symp- 

 toms become developed. A tendency to mischief is 

 suddenly manifested. Boots, slippers, hearth-rug, carpet, 

 chair-legs, and what not, are worried. If the animal is in 

 the kennel, the straw is mangled and scattered about, the 

 brick-work scratched, flooring torn up, and the whole place, 

 more or less, shows signs of destruction. 



The eyes assume a still more vacant expression ; the 

 gaze appears to be fixed ori some distant object. Then 

 a change takes place : the animal proceeds to examine 

 most minutely every crevice and brick round his kennel ; 

 this done, he retires again into obscurity, and in a few 

 minutes repeats the operation. Or the eyes are directed 

 with earnest attention to some imaginary moving object, 

 as a beetle or spider, which they appear to be tracing in 

 its course. Suddenly he jumps forward with a snap at 

 the supposed offender ; and then, as if ashamed at the 

 hallucination, he crouches down, crawls away and hides 

 himself. 



A flow of tenacious salvia is now present. The animal 

 champs his teeth, and smacks his lips. As its tenacity 

 becomes greater and its secretion more rapid, he strives to 

 free his month of it, with his paws, and this latter act has 

 sealed the fate of more than one individual by being mis- 

 taken for a bone fixed in the teeth or throat. * 



* Last year I was requested to visit a small toy terrier,, belonging to 

 a lady of title. The messenger informed me the animal was supposed 

 to have a bone in its throat. On my arrival, which was between g and 

 10 p.m., I found the subject, which the keeper's wife was nursing, sit- 

 ting with mouth slightly open. On removing my hand, after closing the 



