INTERCALATED DISCS OF THE HEART OF BEEF 



H. K. JORDAN AND J. B. BANKS 



PLATE 4 



.3 ' 



44 



...i/-^' 



/."'^H 





m i 



48 



46 



x:-.^ 



45 



^. 



S*-' / 



47 



^ 



r 



r^ 



^■ 



50 



<'^- 5! 



339 



49 



