Smithsonian Report, 1899. — Burdon-Sanders 



Plate V. 



Photograph 12 



"■ ^SSIm •"»-'=.!^=?^-S^E^S' 



Kiue seconds. 



Photographs 13, 11. 



13, 11. Ventricle of heart of R. esculenta arrested bv Stannins's ligature. Excitin*' 

 electrodes on auricle. Leading-off contacts at base and apex. In 13 

 apex surface devitalized by heat; in 14, both surfaces uninjured 



