216 ROYAL SOCIETY OF CANADA 
He now stands quite erect on his legs and to-day climbs over the 
rungs of a small rocking chair. 
When in the house to-day he manifests shyness or appreciation of the 
strangeness of his surroundings. 
When his head is stroked he acts somewhat as a cat. 
Has begun a sort of playing with bis dam. . 
The social tendency is clearly evidenced. 
38th day.—Has grown much. There is a great change in his attitude, 
manner of walking, ete. The puppy can now run fairly well. 
He has wonderful control of his tail, moving it when he approaches, 
vigorously as an old dog. 
For a week past his social tendencies towards human beings have 
been very marked. 
He is now provided with practically his full complement of teeth. 
His eyes and general facial expression have also greatly changed. 
He is still readily startled by sounds. 
He as yet reposes a good deal, which perhaps accounts in no small 
degree for his perfect health and excellent state of nutrition. 
He now sees small objects at a distance of 8 to 10 feet at least. 
He is ready to eat almost anything given him. 
He can now bite accurately at any part of his body. © 
39th day.—His weaning is begun regularly to-day. 
42nd day.—The following experiments were tried to-day: When a 
finger was put in his mouth he sucked it, but he would take no notice of 
a stick presented in the same way. Bread he tackled at once using his 
back teeth to crush it. Meat he devoured eagerly. He had received no 
nourishment of any kind for one hour previous to these experiments. 
45th day.—Puppy is brought into my study. Shows little or no 
shyness after a few moments. He is inclined to move about and use his 
nose in an investigating way. 
He can now run fast and well, his power over his hind legs bung good. 
He hears perfectly even faint sounds. 
On being held before a piano when it is played upon, he manifests 
no special effect. 
46th day.—The puppy gets up to a water pan over a foot high and 
resting his front paws on it laps water, the whole proceeding reminding 
one of a mature dog. This was first done, however, three or four days 
ago. 
A small Skye terrier and afterwards a Collie are allowed to enter the 
puppy's compartment but he does not seem inclined to notice them much. 
Lies with his head on the sill of the door of his compartment. 
47th day.— After I play a little while with the puppy and then retire 
he barks impatiently to get out. 
