262 LINUS WAKD KLINE 



bunch and dragged about the floor and knocked against objects 

 hi the room; for unpleasant taste, quassia wood was used, and for 

 pleasant, candied ginger, chocolate and fruit candy, salted pea- 

 nuts, etc.; the unpleasant odors consisted of pyridine and asa- 

 foetida; the pleasant were the usual perfumes of the toilet, such 

 as violet, white rose, heliotrope, etc. The subject's favorite 

 tastes and odors were used whenever possible. 



The method, then, consisted in an application of the earning 

 process under controlled conditions to a study of the influence 

 of feeling of voluntary movements on their integration and coor- 

 dination into skilful action. 



PLANS AND PROCEDURE 



Distributing 52 cards, one at a time, requires as many consecu- 

 tive movements. By always stacking the cards hi the same way 

 and by distributing them under the same plan to the same fixed 

 boxes, the 52 movements became roughly divided into 8 systems 

 consisting of the 4 cardinal and the 4 semi-cardinal points of di- 

 rection, viz., up, oblique right up, right, oblique right down, etc. 

 Furthermore since the sequence of suits is repeated 13 times in 

 the pack and the numerical order four times, it is possible to 

 classify the 52 movements into 4 sets ending, respectively, with 

 the thirteenth, the twenty-sixth, the thirty-ninth and the fifty- 

 second card. These sets are referred to as the first, second, 

 third and fourth 13, and are represented in diagrams 2a and 2b. 

 A glance at first 13 in plan I shows the prevailing direction of the 

 movements for that set to be oblique up right and oblique left 

 down. 



Experimentation began October 14, 1912, and continued with 

 one hour period a week for each subject, without interruption 

 save for the usual vacations, until the middle of May 1913. 

 Table 2 gives exact dates, extent of time, etc., covered by the 

 experiment. 



Eleven subjects, all members of the Harvard Graduate school 

 save one, and trained psychologists, served throughout the year. 

 Nine members, A, B, C, E, F, G, H, I, and J used plan I. This 



