216 



THE HOUSE I LIVE IN. 



On this cut o and q show the stumps of the 

 two great veins which bring back the blood 

 that had been sent to all parts of the body by 

 the arteries. There are, however, one or two 

 more rather large veins that bring back blood. 

 These you see at^?. The right auricle is at n; 

 b is the right ventricle ; Jc represents the pul- 

 monary artery through which the blood is sent 



