62 



Buchanan 



A record of one of the crossed-reflex responses taken with the first of these 

 is reproduced in fig. 13, C The cord delay was 12-5cr longer than it was in 

 the same-limb reflex response recorded immediately afterwards (with the 

 same strength of the artificial stimulus), and reproduced in fig. 13, A. It 

 was of about the same duration in two other responses, one to a stimulus 

 somewhat stronger, and the other to one a good deal weaker than was 

 employed when the record reproduced was taken. But there is something 



M^A^^^W■MVAv 



AA'^Af' 



Fig. 13. — Electrical responses of the gastrocnemius 

 of a large frog which had been injected 

 2^ hours before being prepared with 10 minims 

 0*1 per cent, phenol. 



A, fourth response obtained when the intact sciatic 

 nerve of the same side was excited. [Time lines 

 750 per second.] B, response to excitation of the 

 peripheral end of the same nerve after It had been 

 divided. Record taken at the end of the experi- 

 ment. [Time lines 835 per second.] C, third re- 

 sponse obtained when the sciatic nerve of the 

 opposite side was excited. [Time lines 750 per 

 second.] 



peculiar about the extra delay when the crossed sciatic is excited by 

 strong stimuli (10,000 units) in phenol frogs (besides that which has 

 already been mentioned on p. 31), the discussion of which I must defer. 

 My experiments should, and I hope will, when they are carried further, 

 throw light upon the results obtained from the most ingenious and in- 

 teresting experiments of Baglioni made for the purpose of ascertain- 

 ing the action of strychnine and phenol on nerve cells in Vertebrates 

 and Molluscs. I do not think, however, that they will confirm his 



