ARTERIAL SYSTEM OF BIRD. 227 
which constitute the mass of flesh lying on the breast, are 
supplied with blood by the arteries of the upper extremities, 
which here possess a manifest predominance. The aorta, soon 
after its origin, subdivides into three large branches ; of which 
the first two (one on either side giving-off the subclavian and 
carotid arteries) convey the blood to the head, the wings, and 
_-—— Lingual artery 
External carotid 
” artery 
_ Carotid artery 
Aorta _ 
Ww 
® 
o 
Fi 
on 
\ 
8 
§ 
/ 
Ly 
\ 
at 
a 
Se || 
Ischiatic 
artery ~ 
~s Femoral 
artery 
Sacral artery Cloaca 
Fig. 125.—ARTERIAL System or Birp. 
the muscles lying on the thorax ; whilst the middle one curves 
backwards and downwards, and handenon the descending aorta. 
Now that which is here the continuation of the great side 
Q 2 9 
