156 
On exposing the pylorus from the duodenal side, it presents the 
form of a crescentic aperture | inch in diameter, but reduced to a 
transverse figure by the pressure of the upper protuberance against 
its inferior thickened ridge: the mucous membrane of both parts is 
produced into longitudinal wavy ruge. A second pylorus might be 
described where these rugze abruptly terminate and where the smooth 
surface of the duodenum begins: this aperture presents a full oval 
form, 1 inch 2 lines by 9 lines, when that intestine is distended. 
The length of the animal, from the muzzle to the vent, was 4 feet 
7 inches; the length of the head, 14 inches; of the tail, 33 inches. 
The length of the intestinal canal was 34 feet, the small intestines 
measuring 30 feet. The ileum, with a circumference of | inch 9 lines, 
rapidly expands at its termination to form the colon, without any 
czecal beginning of the latter gut. This presents a circumference of 
94 inches near its commencement, and gradually decreases to a cir- 
cumference of 6 inches at the rectum. The inner surface of the first 
half of the small intestines is smooth and even; the last half, or 
ileum, is characterized by a single continuous longitudinal fold of the 
mucous membrane from 2 to 3 lines in breadth, extending along the 
side of the gut opposite the attachment of the mesentery. The modi- 
fications of the colon and rectum were described. 
The weight of the liver was 28 oz.; that of the spleen, 2 oz. 
6 drachms; that of the pancreas, 2 0z.: the form and structure of 
these viscera and of the gall-hladder were described. The renal and 
generative organs were next referred to. 
The disposition of the pleura in the thorax, and the form and 
structure of the thoracic viscera were detailed. A peculiarity was 
noticed in the right auricle of the heart: the entry of the inferior 
cava was guarded as usual by the eustachian valve, the homologue 
of the posterior of the two semilunar valves which guard the com- 
munication between the sinus and the auricle in the heart of Rep- 
tiles; in the great Anteater there is a narrower valvular fold or ridge 
on the opposite side of the orifice of the inferior cava, answering to 
the anterior valve in the Reptiles’ auricle, and a ridge is continued 
from both valves in the Anteater, towards the opening of the supe- 
rior cava. 
Of the salivary glands of the Anteater the submaxillary pair were 
those most developed and modified to supply the unusual quantity 
of adhesive saliva with which the long, slender and moveable tongue 
is bedewed: these glands extended over the fore part of the neck 
and chest, and were upwards of 16 inches in length and 2 inches in 
thickness. 
The parotid gland retained its ordinary proportional size and rela- 
tive position. The sublingual gland was represented by an exten- 
sively diffused thin layer of follicles, opening by many small pores 
upon the inner surface of the mouth. The labial glands were small, 
as were also the tonsils. 
The muscles of the jaws were described. 
The cavity of the mouth is susceptible of great dilatation, and pre- 
sents the peculiarity of being extended far back beyond the root of 
