THOUGHT CAPACITY IN ANIMALS 5 



our higher animals, enabling him, as we have seen, to 

 lay down within certain limits in how far and in 

 what way the existence of this capability can be 

 proved where the horse is concerned. Up to the 

 commencement of the Great War these investigations 

 were continued, a number of different horses being 

 used for the purpose. 



In the year 1912 I became acquainted with a new 

 contribution towards the question of animal psychol- 

 ogy in the person of a Mannheim dog called " Rolf." 



The manner in which Rolf's gifts revealed themselves 

 was disclosed in the columns of the " Muenchner 

 Nachrichten " as follows : 



" OUR DOG ROLF 



" By Frau Paula Moekel (ne'e von Moers, in Mannheim) 



" Anyone possessing an intelligent dog of his own 

 will probably occupy himself far more with it than he 

 is wont to do with other animals. This has been the 

 case with our Rolf, a two-year-old Airedale terrier, 

 which has already attained to celebrity. It was 

 accident that led to our discovery of his talent for 

 doing sums correctly. Our children were sitting 

 together at work on their home-lessons, and one of 

 my little girls seized with a fit of inattention was 

 unable to solve her very easy task, viz., 122 plus 2. 

 At length, and after the child had stumbled repeatedly 

 over this simple answer, my patience was at an end, 

 and I punished her. Rolf, whose attachment to the 

 children is quite touching, looked very sad, and he 

 gazed at Frieda with his expressive eyes as though he 

 was anxious to help her. Seeing this I exclaimed : 

 ' Just see what eyes Rolf is making ! It looks as 



