46 



Buchanan 

 Exp. 55. — continued. 



l''he reflex eftects were serial throughout, the separate large rises of the 

 mercury being distinct enough from one another to be counted by the 

 eye in each response. There were sometimes as many as fifteen periods, 

 the number being usually greater in the crossed reflex than in the 

 uncrossed. As the first period was far from being over on a plate 

 which took 0"15 second to pass the slit, they were probably recurring 

 at a rate of about five a second. The records of the responses giving the 

 cord delays marked f showed that the reflex eflfect was not as strong 

 at the beginning as it subsequently became. All the records so marked 

 had the character seen in the reproduction of the first of these (fig. 11, A, 

 p. 54). The records of the responses giving the cord delays marked 

 f f showed that the moment at which the eflfect became strongest was 

 yet longer deferred, and that the strength of the eflTect was very 

 small indeed at the beginning. The records so marked had the 

 character shown in fig. 11, C and D. The crossed-reflex response was 

 more readily produced than the same-side reflex by the weaker 

 stimulus, i.e. one of 1000 units, and, later, one of 500 units was capable 

 of producing a reflex eftect when applied to the left sciatic, before it 

 was capable of producing it when applied to the right sciatic. The 

 number of periods in the electrical reflex responses was no fewer with 

 the weaker stimulus. There was the usual two minutes' rest given 

 between recording successive responses, except when otherwise stated. 



