RECENT NEUROLOGICAL PROGRESS. 275 



his tail and took it greedily enough, then pulled a 

 wry face and hesitated astonished ; but he swallowed it. 

 Perhaps he deemed it not seemly to appear ungrateful 

 to the giver and reject the otherwise fair gift. He 

 overcame his instinct and by his self-control gave proof 

 of the intact cerebrum he possessed. A dog without 

 cerebrum after the usual quantity of food has been taken 

 invariably refuses to take more. The animal seems to 

 know when appetite is appeased. As regards power of 

 sight, the sudden flash of a bright light was evidently 

 noticed, for the gaze was turned immediately in the direction 

 of the lio-fit. 



In spite of this high degree of motility and of reaction 

 to sensory impressions, defects were also present to ex- 

 tremely marked extent. The patting, or stroking, or the 

 offer of food, so pleasurable to a normal dog, and responded 

 to so readily by a wag of the tail or other signs of friend- 

 ship, elicited from the dog without cerebrum no reaction 

 whatsoever, or, at most, a growl in reply to being touched. 

 He paid no heed to the barking or the playful advances 

 of his companions in the kennel. The whip held threaten- 

 ingly before him, though he could see it, did not make 

 him cower. If after beingf washed he was left undried 

 he shivered but did not attempt to shake or lick the water 

 off himself. One dog which was under observation a year 

 and a half never learned during all that time to remember 

 that being lifted from the cage at noon was but a prelimi- 

 nary to his midday meal. He always struggled, resisting 

 the removal and trying to bite the servant who lifted him 

 and fed him. A normal dog after feeding usually licks the 

 top of his nose once or twice, and if a piece of butter be 

 stuck on the nose the dogV relishing the butter, will by 

 repeated licking soon clear it all away. The dog without 

 cerebrum after feeding invariably licked the top of its 

 nose once or twice, as does a normal dog, and if butter were 

 stuck on its nose the tongue, in licking the nose, got some 

 of the butter, which was then swallowed apparently with 

 relish, yet though much butter remained within reach on 

 his own nose the creature never repeated the manoeuvre 



