SENSITIVENESS OF THE SKIN 81 



an attempt on quite a small scale at carrying out the 

 tests which had been successfully so put to the blind 

 horse Bertho, by Karl Krall. 



These experiments as to her susceptibility to touch, 

 or pressure, led to one slightly different, and which 

 cannot as yet be said to have gone beyond its initial 

 stages. I took a set of weights of 5, 10, 20, 30, 100, 

 200, 400, and 500 grammes, and also others of i and 2 

 kilo, and told Lola she must learn to know how heavy 

 a thing could be. Then I placed the weights separately 

 between her two shoulder-blades, naming them before- 

 hand somewhat as follows and having first written 

 out a chart for her which set forth in a plain and easy 

 form what I was going to say : 



125 grammes = J Ib. 

 250 grammes = Ib. 

 500 grammes = I Ib. 

 1000 grammes = I kilogramme 

 100 Ib. = i zentner 



I then explained this carefully and questioned her at 

 once : 



" How many pounds are 375 grammes ? " Answer : 

 " f." 1 " How much are 1,000 grammes ? " Answer : 

 "2." I had intentionally refrained from putting 

 questions as to figures that were on her chart which I 

 had left lying before her ; and after she had given her 

 replies in accordance with the pressure she had felt 

 between her shoulders, I tested her ability at guessing 

 where greater differences of weight were in question. 

 On two occasions she gave the right answers, namely 

 " i pound " and " 2 pounds," I having put the question 

 so as to obviate superfluous spelling. I then showed 



1 Fractions will be touched on in a later chapter on " Advanced 

 Arithmetic." 



