Juu.ni. of Aiiid. and Phijslologu, Oct. 1900.] 



[Plate IV. 



Angle 



-^ . - - - -fcr- — cx — ~".*^< ■■ rwtr ■ - - ■- _ --^ _ . _ . -SS^^^frr-C'iirS^^", r^"^' r- ' 



Fig. a. 



I.e. 



S.c. R.P.v. R.B 



! 







: .■^t" _ 









m.o. 



L.P.V. 



Fh;. B. 

 Human Heart of an adult male, liardenecl in situ with formalin, and afterwards excised. 

 Dii Patten. 



