120 ANIMAL INTELLIGENCE 



11th day. Held a saucer containing warm milk under 

 the nose of one of the puppies. It took the edge of the 

 saucer in its mouth. Another tried to drink the milk 

 but did not succeed, its eagerness being in excess of its 

 ability to co-ordinate muscular movements. 



The evidence of smell is still very doubtful. 



It is now easy to discern that some are larger and in 

 better physical condition than others. 



13tk day. Last night it was observed that the eyes 

 began to open. At noon to-day they are not fully open, 

 being held by a thin sheet of tissue at the outer canthus ; 

 individual differences are very marked, however, in this 

 matter. 



Smell is tested with pieces of cold cooked veal, warm 

 fried kidney, and cold cooked salted herring. All, when 

 these were put near the nose, licked their lips and moved 

 forward and to each side, following the objects evidently 

 by the nose. 



They do not wink when the whole hand or a finger 

 is moved close before their eyes, but when the eye- 

 lashes are touched, or all but touched, they do wink. 

 The same reflex follows where the lid or corner is 

 actually touched. 



It is very difficult to make out the pupil, and I was 

 not able to learn, though I tried day after day, whether 

 the iris contracted to light or not. No evidence of the 

 existence of vision could be obtained. 



A feather inserted into the nostril causes the head to 

 be quickly drawn away. 



Considerable twitching of the muscles is noticed 

 when they are asleep. 



There is a tendency to growling in sleep. 



All the movements are better than on the earlier 

 days ; and for the first time slight tail movements are 

 noticed, none having been observed during the period 

 prior to opening of the eyes. 



