232 RODENTIA. 



tion : it passes behind that gut to the right, and, up that side, attached 

 to the right edge of the mesentery [through] its whole length ; then 

 passes before the root of the mesentery to the left, being pretty closely 

 connected to it ; from thence it passes down to the pelvis nearly on the 

 middle [hue] of the spine. 



The faeces begin to be divided at the beginning of the colon, where 

 there is a thickening and a kind of stricture: Qu., whether or not is this the 

 part that divides the fseces ? There was the same structure in another 

 that I examined. The great intestine is just once the length of the 

 body of the animal ; the small intestine is six times. All along the 

 attachment of the colon to the mesentery there is a series of lymphatic- 

 glands. 



The liver 1 is divided into four principal lobes besides the lobulus 

 Spigelii, which is divided into two ; the smallest lies in the posterior 

 side of the curve and behind the other, which is pretty long, and lies 

 before the stomach, enclosed in the mesogaster, biit would seem to 

 perforate that membrane. The two left lobes are the largest, and the 

 falx and umbilical ligament are inserted into a deep fissure in the 

 second lobe from the left, as in the squirrel. There is no gall-bladder. 

 The hepatic ducts enter the gut about 1| inch beyond the pylorus. 

 The epiploon is attached to the stomach. The spleen and pancreas 

 are as in other brutes : the spleen is an oblong triangular body, pretty 

 red. 



The kidneys are conglobate, and their coat is very thin : the right is 

 much in the usual place, but the left is very low, near the pelvis. The 

 capsula renalis is of a whitish yellow and almost round, situated at the 

 upper end of the kidneys. 



Male Organs 2 . — As the sacrum is in a line with the back, the pelvis 

 is very small, therefore the contents of the pelvis appear above the 

 pubis. The penis is turned back as in the squirrel, guinea-pig, porcu- 

 pine, hare, rabbit. The penis has a bone in it : there are two glands 

 on the side of the retrograde part of the penis, whose ducts open on 

 the edge of the preputium, and are filled with a white mucus. The 

 urinary bladder is thin and pendulous, attached to the linea alba by a 

 thin ligament. On each side of the neck of the bladder lie two glan- 

 dular bodies, soft and pulpy, which may be called prostate glands, as 

 they send in a thin juice into the urethra -just at the beginning. The 

 testicles are large, and lie within the abdomen, having their lower 

 ends pointing out. There is no scrotum. The epididymis begins at 

 the upper end of the testicle, and as it descends becomes smaller ; it 



1 [Hunt, Preps. No. 800.] 2 [lb. Jfos. 2500, 2501.] 



