PLATE LXIV. 



Class MAMMALIA continued. 

 THE BABBIT continued. 



FIG. 1. CIRCULATORY SYSTEM: VENTRAL VIEW, x about \. 



e.j. external jugular vein : i.j. internal jugular vein : sc. v. subclavian 

 vein: v. c. 1 right superior vena cava : a. i. anterior intercostal 

 vein: v. a. vena azygos receiving intercostal veins: v. c. 2 left 

 superior vena cava. 



h. heart: a. a. arch of the aorta: i. innomin'ate artery: s. 1 , s. 2 right 

 and left subclavian arteries : v. vertebral artery : r. c. right 

 common carotid artery : /. c. left common carotid artery : ao. 

 dorsal or descending aorta giving off intercostal arteries : c. 

 cceliac artery : m. superior mesenteric artery : r. renal artery : 

 i. m. inferior mesenteric artery: s.p. spermatic artery: 

 m. s. median sacral artery : c. i. common iliac artery : i. I. ilio- 

 lumbar artery : i. i. internal iliac artery : e. i. external iliac 

 artery. 



i. i. v. internal iliac vein : c. i. v. common iliac vein : e. i. v. external 

 iliac vein: r. v. renal vein from Jc. kidney: ad. 1 , ad. 2 right 

 and left adrenals: h.^-h. 3 hepatic veins: p.p. posterior 

 phrenic veins ; v. c. s inferior vena cava. 



FIG. 2. HEART AND GREAT VESSELS : VENTRAL VIEW, x 1. 



v. 1 right superior vena cava: v. 2 left superior vena cava: v. 3 

 inferior vena cava : r. a. right auricle : r. v. right ventricle : 

 in. infundibulum : p. pulmonary artery : I. a. left auricle : 

 I. v. left ventricle : a. arch of the aorta : i. innominate artery : 

 s.^s. 2 right and left subclavian arteries: c. 1 , c. 2 right and 

 left common carotid arteries. 



FIG. 3. HEART AND GREAT VESSELS : DORSAL VIEW, x 1. 



v. 1 right superior vena cava : v. 2 left superior vena cava : v. 3 inferior 

 vena cava : r. a. right auricle : 1. a. left auricle : ve. ventricula-r 

 portion of the heart : p. pulmonary artery : a. arch of the 

 aorta: i. innominate artery: s. 1 , s. 2 right and left subclavian 

 arteries : c. 1 , c. 2 right and left common carotid arteries. 



FIG. 4. HEART AND LUNGS : VENTRAL VIEW, x 1. 



v. 1 , v. 2 , v. s the three vena? cavae : a. arch of the aorta : i. innominate 

 artery : t. trachea : r. right lung : /. left lung. 



