214 ANIMAL INTELLIGENCE 



clear evidence of both enjoyment and disgust through 

 taste, at all events. 



The general advancement of the animal is well shown 

 in its behaviour towards blistering fluid on the 10th day. 



By the 20th day smell had become a powerful moving 

 force in the animal, as it always will continue to be. 



The manner in which a sleeping dog, young or old, 

 is affected by the presence of food with a pronounced 

 smell, is very impressive to one who witnesses it. 



At so early a period as the 24th day this puppy's 

 sense of smell was so well developed, it will be noticed, 

 that he followed a bone by its aid quite well. At this 

 period he used his eyes, as well as his nose, to guide him. 



At this date also hearing was good in fact, by the 

 25th day the dog had reached a period of fair develop- 

 ment of all his senses, and with considerable motor 

 power, which, of course, also implies a corresponding 

 development of the muscular sense. Hearing seems to 

 be the most rapidly developed of all the senses, i.e. the 

 period from its first beginnings to its greatest acuteness 

 is relatively short. 



The pleasure of the puppy on having its head stroked, 

 on the 31st day, is noteworthy. 



The Moiigrd Dog and the Pure-Bred Dog Compared. 



In my first paper on the dog, certain differences were 

 noted between two varieties of pure-bred dogs the one 

 large and the other small, viz. between the St Bernard 

 and the Bedlington terrier. I now propose to compare 

 the pure-bred and the mongrel, chiefly on the basis of 

 my records in the earlier and in this paper. 



The mongrel showed more vigour at birth, and shortly 

 after, as evidenced to me at a distance, by the voice. 

 He also seemed to be somewhat less influenced by cold, 

 though more persistent, or at least more successful, in 

 getting all the heat possible from the dam. 



