L L*. Subclavian artery of the right side overlying the pleural sac.
M M*. Right subclavian vein.
N. Right common carotid artery cut at its origin.
O. Trachea.
P. Thyroid body.
Q. Oesophagus.
R. Genio-hyo-glossus muscle.
S. Left tonsil beneath the mucous membrane.
T. Section of the lower maxilla.
U. Section of the upper maxilla.