Bulletin of the Museum of Comparative Zoology 
AT HARVARD COLLEGE. 
Vor. XXXI. No. 6. 
THE THORACIC DERIVATIVES OF THE POSTCARDINAL 
VEINS IN SWINE. 
By G. H. Parker anD C. H. Tozıer. 
CAMBRIDGE, MASS., U.S. A.: 
PRINTED FOR THE MUSEUM. 
Marcum, 1898. 
