CEBUS APELLA. 25 



The heart lay very near the diaphragm, but there was a space betwixt 

 them. The liver had five lobes : the right of all passed in and made 

 the lobidus Spigelii. The gall-bladder adhered to the middle lobe. 



The duodenum for length and course was much as in the human, but 

 is seen through all its course by raising the mesentery. The right 

 edge of the mesentery, where it degenerates into a mesocolon, was not 

 tacked down to the loins as in the human, which exposes the duodenum 

 through its whole length. There was a pretty long caecum; and a 

 mesocolon through the whole length of the colon, so that the colon did 

 not adhere anywhere ; but its situation and course were much as in the 

 human : there was no sigmoid flexure. The rectum is straighter than 

 in the human subject. The bladder and uterus were more in the ab- 

 domen than they are in the human subject. 



A Capuchin Monkey [Cebus Apella, Linn.]. 



His thoracic viscera are like other animals, only that there is not a 

 cavity behind the oesophagus, as in the otter, leopard, &c. The ab- 

 dominal viscera are a good deal like a dog's, only the duodenum is not 

 so long nor so loose. There is not so much difference between it and 

 the human [duodenum], only that it is somewhat longer and looser, 

 and is not so much hid by the root of the mesentery : one can see its 

 whole course when the mesentery is raised up, and it does not pass so 

 far to the left side as in the human. The caecum is long and somewhat 

 conical : the colon and rectum are much as in a dog, but rather larger. 

 The epiploon on the left side is attached to the pancreas, which is loose 

 at that end : so is the spleen ; and on the right side [the epiploon] is 

 attached to the beginning of the transverse arch of the colon. The 

 liver is divided into four lobes, besides the lobidus Spigelii ; and the 

 gall-bladder is attached to the third from the right side, which is the 

 largest, in a sidcus of that lobe. The pancreas is in a middle shape 

 between that of the brute and the human ; on the left end it is loose ; 

 it then becomes a little more attached to the back, but not so firm as in 

 the human, and lies in the curve of the duodenum, being a little longer 

 than in the human ; the little pancreas is likewise a little longer, being 

 a degree towards the brute. 



The tunica vaginalis of the spermatic chord was obliterated only a 

 little way, so that it leads a pretty way up the chord from the tunica 

 vaginalis of the testis, and a little way from the abdomen. The urinary 

 bladder is as in other brutes. 



