334 Dr Duckworth, A critical description of three cases 
Each of these branches, after giving off a femoral branch at 
the appropriate point, is finally traceable to the back of the 
pelvic cavity and comes to an end in the close vicinity of the 
lateral terminal branches of the dorsal aorta. This suggests that 
the normal common iliac vessels in this instance have been 
interrupted. 
The arrangement is represented in Fig. 12, and it should be 
remarked that the ventral and dorsal divisions of the aorta are 
separated by the kidneys (which touch in the middle line of 
the body) and by the pelvic viscera. 
Fig. 13. The principal abdominal arteries of specimen F viewed from 
the left side. 
Two veins are seen on the vertebral column in its lower 
portion. They are joined by a cross-branch below ; then they 
diverge and the slender dorsal aorta appears between them. 
