530 THE RABBIT chap. 



Remove Uic c.vcum Lugctlicr \\ilh a small portion of the ileum and 

 colon, wash it out by directing a stream of water through it, distcn'l 

 rith water (it is better to harden it first with formaline) and examine in 

 a dish of water ; with the scissors cut away a piece of the wall here and 

 ■jrc, between the constrictions and in the appendix. Note : — 



1. The mucous nicinbranc, tniisiular coaf^ 2C^A peritoneum. 



2. The longitudinal ridges or n/_g-a- in the stomach, and the pyhrii 

 valve. 



3. The aperture of the bile-duct^ and the villi and Peyers patches 

 (p. 498) in the small intestine. 



4. £(, The Peyers patches 2cwA intra-coUe valve in the proximal part 

 of the colon ; h, the thick lymphoid tissue in the walls of the saccuhis 

 rotundus ; <", the ileo-colic aperture and valve. 



5. The spiral valve of the ccecum, and the Imyphoid tissue of the 

 vermiform appendix. 



6. The characters kA the mucous membrane of the c>."ecum and larj^e 

 intestine. 



(Microscopic sections of the small intestine — injected and uninjected, 

 should also be examined, compared with Fig. 39, and the villi and 

 intestinal glands noted. ) 



\TI. Ligature the postcaval at the points \\here it enters and leaves 

 tne liver : remove the entire liver, noting as you do so the aorta, 

 ifz/llet, postcaval, hepatic reins, and phre/iic veins. Sketch the liver from 

 the posterior surface. Then return to the examination of the abdomen. 

 ixni\ make out (Fig. 130) — 



I. The ;-£7m/ and \pcrmatii W\x ovarian) arteries -c^wA veins. 



1. The caudal artery, arising from the dtirsal side of the aorta. 



3. The common iUac arteries, eacli (.if \\ hich gi\"es ofl' an ilio-lumbar 

 branch and divides into an exter)nil -Awd an internal iliac, the former be- 

 coming continuous, beyond I'oupart's ligament, with \\\it J'e moral. (The 

 course of these arteries and of the corresponding veins can lie more easily 

 traced after the urinogenital organs have been remo\ed — see ^ IX.) 



4. T\\^ ilio-lu/nbar I'cins, and the trifurcation of the postcaval into the 

 C-\ternal HiacK and a median vein formed by ihe fusion of the two intcr- 

 )ial iliacs. 



Sketch all ihesc vessels laler, aflei ihc removal of ihe \uinogenitaI 

 I iigans. 



\TII. Dissect away ihe peritoneum and fat from the kidneys, ureters, 

 •xwA geneialive organs, and trace each ureter from the hilus of tlif 



