292 



Dr. A. D. Waller 



[Feb. 4, 



Class I. — "Sensitives" giving large responses (10 per cent, or 

 more of the original resistance) from the forearm and from the 

 hand. 



Class II. — " Normals " giving moderately large response (2 to 

 5 per cent.) from the hand, but little or no response from the fore- 

 arm. 



Class III. — " Insensitives " giving little or no response (1 per 

 cent.) from the hand, and, of course, also the forearm. 



Class IV. — (a) Subjects who, by reason of their state of health, 

 were obviously unfit to undergo examination, and (b) subjects who 

 declared themselves as unable to stand it. 



Subjects of Class I. and Class II. include those who were charac- 

 terised a moment ago as "imaginatives." The three spiritualistic 

 mediums to whom I referred just now were included in Class I. 

 Class III. comprises people of duller imagination, or perhaps of 

 firmer fibre, whom we called " positives." 



At this early stage indeed, when the number of properly observed 

 cases is so small and the danger of imperfect observation so great, 

 it seems to me hazardous even to talk about rules and exceptions or 

 to attempt a classification. Nevertheless, if the attempt is made 

 without prejudice, and if the results of observation are recorded in 

 physical units by the side of what in medical parlance is the clinical 

 history of the subject, a preliminary classification is not only per- 

 missible, but also necessary. 



Let me again refer to the present attempt and make good the 

 point that we may expect to find the unexpected, that so-called 

 regular results may be exceptional and vice versa. 



16. Pythiatics. — Hysterical subjects, or, as they are now called, 

 " pythiatics," men as well as women, seem to be exceedingly sensitive 

 and make a great fuss ; but when they have been persuaded to sit 

 still in an armchair and connected up with the galvanometer and 

 tested by ordinary stimuli — pin-prick, false and real ; match-burn, 



