140 ANIMAL INTELLIGENCE 



no light and walked softly, yet two of the puppies, 

 lying against the wire-mesh partition, some 6 or 8 

 'feet from where I stood in the darkness, awoke and 

 soon began to cry as I passed close to the closed main 

 kennel door. The old dogs were heard sniffing. They 

 evidently detected me by the sense of smell. 



Was it wholly so in the case of the puppies, or were 

 they assisted by sight ? Hearing may, I think, be 

 excluded, though not with perfect confidence, so sharp 

 now are their ears. 



In any case, this observation is of much significance, 

 even be it granted that they were not asleep at the 

 time I stood before the door of their kenneL It is 

 further to be remembered, in this instance, that by a 

 misunderstanding the puppies had not had their last 

 evening meal, and also lacked water. 



4Sth day. It remains warm. The flies are trouble- 

 some, and as the puppies lie asleep, or trying to sleep, 

 the same movements of the skin of the head, of the ears, 

 etc., may be seen as in mature dogs when flies irritate 

 these parts. 



49A day. To-day, for the first time, the puppies were 

 removed for a time to a part of the yard enclosed by 

 wire-mesh. The earth furnishes a fresh surface with 

 various small objects on it. 



The puppies proceed to investigate, as when before 

 they were given free access to new surroundings. 



They seize and carry small objects, which they take 

 from each other, indulge in play, and evidently ex- 

 perience keen enjoyment. After, say, half an hour, they 

 lie down and sleep. 



When I call " Puppies ! " from a verandah, at a height 

 of about 20 feet, and at about the same distance on 

 their plane, they look up, some of them at least, at once, 

 to my surprise, for I expected they would not be able 

 to detect the direction of the sound so quickly. 



