Chap. X.] 



THE HEART AND CIRCULATION. 



209 



artery (br. a.) to the wing, and a larger pectoral artery (pc. a.) to 

 the great muscles of the breast. The common carotids almost 



hyp.v. 



in.il. c. in - n ' 



FIG. 65. CIRCULATION PIGEON. 



(. m. a. Anterior mesenteric artery, a. r. a. Anterior renal artery, a. r.', 

 a. r.", a. r.'" Afferent renal veins, a. o. Aortic arch. br. a., br. v. Brachial 

 artery and vein. c. Caudal vessels, c. c. Common carotid, cos. a. Cceliac 

 artery, cr. v. Crural vein. fern. a. Femoral artery, he. v. Hepatic vein. 

 hyp. v. Hypogastrio vein. il. v. Iliac vein. in. a. Innominate artery. 

 in. il. Internal iliac vessels, isc. a. Ischiatic artery, ju. Jugular vein. 

 1. au. Left auricle. I. pc. Left precaval. I. v. Left ventricle, in. r. a. 

 Middle renal artery, pc. a., pc. v. Pectoral artery and vein. p. m. a. Pos- 

 terior mesenteric artery, p. m. v. Posterior mesenteric vein. p. r. a. 

 Posterior renal artery, pt. c. Postcaval vein. put. ar. Pulmonary artery. 

 r. au. Right auricle, r. pc. Right precaval vein. r. v. Right ventricle. 

 sc. a., sc. v. Sciatic artery and vein. s. cl. a. Subclavian artery, ver. Ver- 

 tebral vessels. 



14 



