BOOK III. 



69 



A— The " beginning " {origo). B— The " esd " {finis). C-The " head " (caput). 



D— The "tail" (cauda). 



A vena dilatata has only a " beginning " and an "end," and in the place 

 of the " head " and " tail " it has two sides. 



A — The "beginning 



B — The • end. 



C. D- The ' sides 



