H. The brachio-cephalic artery.
I. Left common carotid artery.
K. Left subclavian artery.
L. Right common iliac artery at its place of division.
M. Left common iliac artery, seen through the meso-rectum.
N. Inferior vena cava.
O O. The sigmoid flexure of the colon.
P. The rectum.
Q. The urinary bladder.
R. The right iliac fossa.