122 ANIMAL INTELLIGENCE 



One puppy appears to see, or be trying to see, the 

 dam, judging by the position of the head, etc., but it is 

 possible that it is partly guided by smell. I allowed 

 the dam to stand just within the pen at some little 

 distance (1 or 2 feet) from the puppies lying asleep 

 or drowsy. An uneasiness was manifested which in- 

 creased, and was probably due to their smelling the darn. 



On bringing some sulphuric ether towards the 

 nostrils of one of the puppies there was decided evi- 

 dence of dislike. 



When they are lying asleep, touching the lips gently 

 causes movements of the muscles of the face, and 

 especially of the tongue an incipient sucking, in fact. 

 All tests of hearing give negative results. It is im- 

 possible to introduce a small probe into the auditory 

 canal which attempt was made with the puppy under 

 ether so as to avoid the shaking of the head, which 

 might introduce fallacies, and be a source of danger to 

 the drum-head of the ear. 



For this and other investigations that could not be 

 well carried out at home, one of the puppies was 

 conveyed to the Physiological Laboratory of M'Gill 

 University. The puppy, having sucked to its satisfac- 

 tion, was tucked up warmly in a basket, and conveyed 

 for twenty minutes in a street car without the slightest 

 signs of uneasiness. 



Whenever the puppy recovered the least from the 

 ether anaesthesia it showed a tendency to whine, cry 

 out, move, etc. 



To-day there was undoubted play witnessed, both 

 paws and jaws being used, especially the latter. The 

 second subject participated to a less degree. There 

 was no sucking of the ear or other part of the body in 

 this case, as had often happened before, when the mouth 

 of one canine casually came in contact with the ear, 

 paw, etc., of another puppy. 



