Proceedings of the Boston Society of Natural History. 
Vol. 29, No. 8, 
p. 163-178. 
/ • / 
THE BLOOD VESSELS OF THE HEART IN CARCHARIAS, RAJA, 
AND AMI A. 
By G. H. Parker and Frederica K. Davis. 
With three plates. 
BOSTON: 
PRINTED FOR THE SOCIETY. 
Octoher, 1899. 
