BOOK III. 



63 



Other Venae Prof undue (D, E, F) from the very summit of the mountain 

 or hill descend the slope (A) to the hollow or valley (B), and they again ascend 

 the slope or the side of the mountain or hill opposite (C). 



Other Venae Profundae (C, D) descend the mountain or hill (A) and 

 extend out into the plain (B). 



