THE PSYCHIC DEVELOPMENT OF YOUNG ANIMALS 131 
27th day.—The puppies follow a small object (3 by 1 
inches) dangled before them at 15 inches. 
One is observed playing with a straw 3 or 4 inches 
from it. In this act there is the use of the mouth and 
the fore-limb, with all that this implies. 
There is clear evidence that sounds made at the 
outer door of the kennel, and in the adjacent yard, are 
heard. 
A basket in which meat had been kept, and giving 
off a strong odour when brought near the pen, is plainly 
smelled. The dam is brought within 3 feet of the 
puppies, but unseen by them. First one, and then 
another begin to sniff and soon to cry. 
The playing shows advance; better use is made of 
the hind lhmbs, which develop functionally and much 
more slowly than the forelegs. The head and neck 
movements are also better in all respects. 
Now, and even some days since, increase in the 
quantity and quality of the coat, with changes in the 
shape of the head are evident; and in both physical 
and psychic characteristics, individuality is to be 
noted. 
To-day play seemed in one case to change into a 
little quarrel for a few seconds. 
One is observed to utter an abortive bark in its sleep, 
28th day.—Noises above the kennel in my pigeon 
loft have greater effect on the puppies than on the 
mature dogs in the adjoining’ kennel. 
They can now follow with the eyes the small objects 
used in all these experiments at a distance of 4 or 
5 feet; while a napkin, etc., can be followed anywhere 
within their kennel compartment. 
Various objects, as a plate, glass, a folded napkin, and 
a Spratt’s dog biscuit, are presented, but they mouth 
all about equally, so that distinct selective choice is 
not shown, 
