668 
Sy >, 
J 
iL \ Ragll 
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c Rep 
Fic. 370.—Teart and arterial system of pigeon. 
R.A., right auricle ; R.V., right ventricle; Z.V,, left ventricle; Z.A., left auricle; 
P.V., pulmonary veins; P., pectoral artery; Br., brachial artery ; C., carotid 
artery ; D.A., dorsal aorta ; CZ., coeliac; A./., anterior mesenteric ; R., renals ; 
4", femoral; Sc., sciatic; /Z., iliac ; 4.m., posterior mesenteric ; C., caudal, 
