Each of the pair

splits at its extremity; the one
branches in the direction of the thumb and the other in the
direction of the palm; and from these run off a number of minute veins
branching off to the fingers and to all parts of the hand. Other
veins, more minute, extend from the main veins; from that on the right
towards the liver, from that on the left towards the spleen and the
kidneys. The veins that run to the legs split at the juncture of the
legs with the trunk and extend right down the thigh. The largest of
these goes down the thigh at the back of it, and can be discerned
and traced as a big one; the second one runs inside the thigh, not
quite as big as the one just mentioned. After this they pass on
along the knee to the shin and the foot (as the upper veins were
described as passing towards the hands), and arrive at the sole of the
foot, and from thence continue to the toes. Moreover, many delicate
veins separate off from the great veins towards the stomach and
towards the ribs.