ae 
a ae ire EE 
’ 
i. 
DIFFERENT FORMS OF CIRCULATING APPARATUS. 241 
Greater circulation. 
Fig. 129.—D1acram or THE CIRCULATION IN MAMMALS AND Brnps. 
were quite distinct from each other; and in fact they are 
almost so in the Dugong, one of the herbivorous Whales 
Lesser circulation. 
Vena cava 
Fig. 130.—D1aGRaM OF THE CIRCULATION IN REPTILES, 
R 
