42 LOLA 



inflicting any cruelty was unbearable. And, indeed, 

 as time went on, this did not occur again, for I kept 

 a keener watch. Soon, too, her capabilities increased, 

 and she was able to fulfil more easily the greater 

 demands made on her when answering to questions. 

 With regard to decimals and units, I made a dis- 

 covery which is, I think, worth stating. The dog 

 did not look at me, but seemed, on the contrary (on 

 this occasion), much interested in gnawing the leg of 

 a chair, and I thought she could not have understood 

 me, or else she would surely have looked up at me. 

 Yet, she had apparently only done this to cover her 

 confusion as it were ! Indeed, this was evident from 

 her expression, and she had heard everything right 

 enough, for she then and ever after rapped her 

 replies without " visualizing " and I mentally re- 

 turned thanks to Karl Krall for the practical advice 

 he had given me, and which had been so opportune. 

 Rolf rapped with one paw only, as has already been 

 stated ; one was, therefore, obliged at length to put 

 the question to him : " I or 10 ? " And Rolf would 

 then say " yes " or " no," as the case might be. 

 This is confusing for the onlookers, and, as a matter 

 of fact, when I saw him at Mannheim I never knew 

 for certain what number he had indicated. But with 

 Krall's method of using alternate hoof or paw, any 

 confusion or doubt is ruled out. 



