4 LOLA 



the most unexpected insight into their actual thinking 

 and^feeling. 



They also learnt the divisions of time, while every 

 kind of experiment was undertaken in order to test 

 their reasoning capacity. All these attempts and the 

 majority of results were of such a nature that it became 

 quite impossible not to realize that further persistence 

 along the same lines of inquiry was bound to lead to 

 a confirmation of the assurances already given by 

 Karl Krall with regard to his pupils' " scholarship." 

 Many diverse opinions were heard, while the number 

 of serious adherents to the cause as well as that of its 

 opponents increased. Special instances to which 

 objection had been taken on the score of supposed 

 " influence," or of " signalling," were carefully 

 investigated by Krall in order to clear up any implied 

 doubts. For this purpose a blind horse, by name 

 " Bertho," was taken in hand, proof being thus 

 provided to confute the mythical " code of signals " 

 supposed to exist between master and pupil. Other 

 tests undertaken with Bertho were equally successful ; 

 Krall was, in fact, always eager and willing to submit 

 every objection brought forward to investigation, 

 evident though it was, that his own vast experience 

 amply sufficed to tip the balance in his favour. 



It would take us too long should we attempt to 

 enter into any detailed discussion on this point. 

 Krall's book, " Denkende Tiere " (" Thinking 

 Animals ") 1 , may be recommended as the best source 

 for investigation for those desiring to know more on 

 this subject. 



It must in any case be admitted that the investiga- 

 tions undertaken by Krall have shed a flood of light 

 on the problem of the capacity for thought latent in 



1 Published by Friedrich Engelmann, Leipzig. 



