40 



Buchanan 



Exp. 47. (R. Gastroc). Nov. 23, 1906. Room temp. 16° C. ; moist chamber 

 kept at 14° C. Two minims O'Ol per cent. liq. strych. injected I hour 

 before preparing the muscle and nerve. No crossed effect could be 

 obtained at first with a stimulus under 14,000 units in strength. 



The records show that the same-side reflex response was, to begin with, 

 somewhat weaker, but of about the same duration as the direct response; 

 but that it soon became as strong, and four times, then six or seven 

 times, as long. The direct response was reduced in strength by the 

 weakening of the stimulus to 4000 and 3000, while the reflex response 

 was not ; so that this became finally not only longer, but stronger than 

 the direct response. 



The crossed-reflex effect in the 1st response was very feeble. In the two 

 next there was apparently a second stimulus of central origin, affecting 

 the muscle 47(t and 37(t respectively after the 1st. There was this 

 again in the last response but one (the 6th), whereas the only same- 

 side reflex responses which showed it were the 4th and 6th. In the 

 3rd, 4th, 5th, and 6th responses the crossed-reflex effect was quite as 

 strong as that of 'the same-side reflex, although in the 6th it did not 

 attain its maximum until some llcr after it had begun to be effectual. 

 Its duration was shortest, being about twice that of a direct effect, in 

 the 4th. 



For records of the 5th and 10th responses (of the whole series) see fig. 9. 

 p. 52. 



