BOOK III.

69

A—The “ beginning ” ( origo ). B —The “ end ” ( finis ). C— The “ head ” { caput ).

D— The " tail ” ( cauda ).

A vena dilatata has only a “ beginning ” and an “end,” and in the placeof the “head” and “tail” it has two sides.

A—The “beginning.”

C, D —The “ sides.”

B —The “end.”