208 ANIMAL INTELLIGENCE 



2nd day. The irritating substances used on the first 

 day produce more marked effects. 



No positive evidence is forthcoming as regards milk, 

 but sugar seems to be agreeable. 



When salt is put in the mouth it is rejected doubt- 

 fully, but aloes most decidedly. Both are used in 

 solution. 



5th day. Irritants affect the puppies through the 

 nose at a greater distance. 



It remains doubtful whether meat is smelt or not, 

 but milk and a solution of aloes seem to be, for the 

 puppies cease to make their characteristic sounds when 

 these substances are placed before the nose. 



They do not yet seem to show any shortening of the 

 latent period of reflex action on pinching. 



9th day. None of them show any signs of opening 

 of the eyes. 



10^ day. When blistering fluid in a bottle is 

 brought near, active movements result; the head is 

 lifted up, the tongue put out, and sneezing, etc., follows. 



Now, when a solution 6*E salt of the same strength as 

 that used before is presented, it is rejected, and there is 

 frothing at the mouth, etc. Much disgust is also shown 

 towards aloes ; with milk the result is not pronounced, 

 but with sugar there is undoubted enjoyment. 



Eyes begin to open. 



19th day. On clapping my hands, and uttering 

 " Hist ! " vigorously, the ears are moved, indicating the 

 ability to hear. 



20th day. Evidence of hearing, as above, at the 

 distance of 4 feet. 



A piece of meat, put within a J-inch of the nose 

 of one of the puppies, causes it to move towards the 

 object and lick the lips. The same follows when 

 cheese is used. When the same experiments are tried 

 with sleeping puppies they also lick the lips. 



