96 
ANATOMY AND PHYSIOLOGY 
gical Society, December 10, 1836, states, “When the 
young cachalot (sperm whale) has attained the length of 
34 feet, its teeth are perfectly formed, though not visible 
until it exceeds 28.” Mr. B. found eight rudimentary 
teeth on each side of the upper jaw in two instances, 
which, “ though not visible externally in the young 
cachalots, may be seen upon the removal of the soft parts 
from the interior of the jaw.” The entire length of these 
teeth was about three inches. 
In the lower jaw of the skeleton of the sperm whale 
at Burton-Constable, there were 48 teeth — 24 on each 
side ; but there were no indications of sockets in the 
upper jaw. 
OF THE OESOPHAGUS, STOMACH, AND INTESTINES. 
“ The oesophagus or gullet, as in other animals, begins 
at the fauces or posterior part of the mouth, and although 
circular at this part is soon divided into two passages by 
the epiglottis passing across it, as will be described 
hereafter. Below its attachment to the trachea it passes 
down in the posterior mediastinum, at some distance 
from the spine, to which it is attached by a broad part of 
the same membrane, and its anterior surface makes the 
posterior part of a cavity behind the pericardium. Pass- 
ing through the diaphragm it enters the stomach, and is 
lined with a very thick, soft, and white cuticle, which is 
continued into the first cavity of the stomach. The 
stomach, as in other animals, lies on the left side of the 
body, and terminates in the pylorus towards the right. 
