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 dam. 
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 anesthesia 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. 
