Mil I'll 



i he amplitude "i deflection 

 pair <•: etH « ill t 



points of stimulation, for under 1 1 

 itesl possible difTe 



the wave to reach eacl ntacl 



Bearing I principles in mind, we may i 



I When tv <> eh applied ;it difl 



ricle, the amplitudi 



In I bj each heartbeal i« .vhen the lit 



trodes m the iricular i make I 



movemenl of the string musl be pi iphed in the n 



described, the resulting tracing being called '■ 



the experiments with the circular sheet of m lluded to 



thai the Rtimulus i<» produce this resull musl havt 

 borhood of ' he nod< 2 I f one elect 



her electrode is moved aboul from i»' 

 auricle, the deflection being noted 

 on the node ^n ill always be found to I 

 This, however, will nol !»•■ the I both ele 



..ii other parts of tl><- auricli 



\ shall Bee immediately, the current 



In-art may be re 'ded bj connecting a galvam 



of the body; for exampli the righl fore limb and I 



limb. <>n the eleel liogram thus obtained a 



of w hich, «-all<'<l the P wi ly be 



rHiiiractn.n of the auricli -_' If 



■us with thus.' obtained during 



sed by applying ele stimulation to 



found that the ele the 



normal curve onlj when the stimulated 

 the Binoaurieular nod< In other 

 applied to the sinoauricular node tl 

 When the appendix <>r th< 

 diHtorted although the other w 



\ B taking eh 

 <>n the auricle and i 

 limb lead tal 

 the tin 



lship t>. tin' r 



■ 





