'1111 l'HYSHU.<* 





The • menl can \»- still I.. • 



shaped clamp Qi ell'a clamp h' this ia app 

 can be pinched either a1 the Binoauricular junction ilo- 



ventricular, it will \«- found that, . 





I lllci 





I 





pinched, the portion of i !>«• hearl below fails to beat quickly 

 above the clamp Fig J'- Thia is known as partial heart 

 the degree of tin- block is indicated by the numerical ex to 1, 



:: to 1. 1 to l. etc., meaning that tin- sinus is beating either V 

 quickly as tin' ventricle, or three times, <>r four tim< 



■ 



Similar conditions of heart bl< 

 the cardi 



Further evidence that tl ua doiuii ;t in I 



