72 PROFESSOR OWEN ON THE AYE-AYE. 
orifices, and from this tract the fibres of the outer muscular layer radiate. A narrow 
but well-marked crescentic fold projects into the cavity from the lesser curvature, four 
lines to the right of the cardia, subsiding about an inch down the fore and hind walls : 
this fold appeared after the cavity had been fully distended, and it marks out inter- 
nally the division between the cardiac and pyloric compartments. The pylorus 
is a subcircular aperture, above which projects a short thick longitudinal promi- 
nence. 
Among the contents of the stomach were portions of a semitransparent colourless 
pulp, which, under the microscope, were seen to consist of hexagonal cells, combined 
with long fibres of a brown colour ; and these, under pressure, exhibited a moniliform 
structure. In the cellular structure were traces of a spiral vessel. The whole was 
indicative of the remains of the pulp of some tropical fruit. No evidence of larve or 
other insects was observed. 
The duodenum (Pl. XXVI. fig. 1, A), after its usual curve, crosses the spine below the 
root of the mesentery, then turns up the left side to commence the three principal folds 
of the small intestine (7), on the border of the mesentery, by which, with the cecum, 
they are freely suspended. A duplicature of peritoneum is continued from the end of the 
duodenum, and from the lower part of the beginning of the colon, to the first lumbar 
vertebra, attaching them thereto. ‘The colon, after a course of three or four inches, 
forms a long narrow fold (‘b. fig. 2, ¢, e), five inches in length, then passes to the left, 
above and behind the root of the mesentery, and descends along the left lumbar and 
hypogastric regions to form the rectum. 
The duodenum is about 4 lines in diameter. The length of the small intestines, when 
detached from the mesentery, is about 4 feet. Here and there they show slight con- 
strictions, as at 2, 2, fig. 1]. Thelength of the caecum (Pl. XXVI. fig. 2, f), from the end 
of the ileum (2b. b), is 2 inches 7 lines. The first inch (f) of the cecum is 10 lines in dia- 
meter ; the rest (g), measuring | inch 9 lines in length, is 3 lines in diameter. The caecum 
suddenly contracts to this dimension, and terminates rather obtusely here, resembling 
an appendix vermiformis ; but this is not marked off by any valvular structure from the 
wider part of the caecum, and it is continued, as in the human fcetus, directly from the end 
of the wider part, or czecum proper. 
The large intestines are about 1 foot 10 inches in length. The colon, moderately 
distended, is 1 inch 2 lines in diameter at its commencement, and gradually decreases 
in width. Beyond the first enlargements (c, ¢c) it is not sacculated, but is slightly 
puckered on a longitudinal band (x), which may be traced a few inches from the 
beginning of the gut, where two or three pouch-like protrusions appear on inflation. 
The ileo-colic aperture is slit-shaped, bounded by two low ridges, that next the cecum 
being most produced. 
The contents of the colon were of a dark pultaceous character ; nothing more definite 
could be distinguished in them than vegetable tissues like those in the stomach, but 
