288 MANUAL OF -MODERN FABRIERY. 



That part of the food which has not been taken up by 

 the lacteals and absorbents in its course through the small 

 intestines, passes through the valvular opening of the ileum, 

 the fluid portion of it finds its way into the colon, and the 

 rest enters into the caecum. Here it seems to remain a 

 considerable time, in order that the nutriment may be 

 extracted from it. This blind pouch is plentifully supplied 

 with bloodvessels and absorbents, which perform their office 

 of carrying off the nutritive portion. 



Horses will frequejitly drink more at a time than the 

 stomach is capable of containing. It does not, however, 

 remain in it, but passes on to the caecum, which acts as 

 a reservoir in time of need. This organ will contain four 

 gallons of fluid. 



n^n^n. The aorta descends in both cavities. . 



o. The vena cava descends, 

 p,/?. The emulgent veins, which empty their blood into the vena 



cava. 

 q, q. The emulgent arteries, emanating from the aorta. 

 7', r. The spermatic arteries and veins, which are united by a cellular 



substance, soon after their origin is distributed to the ovaria. 

 5, 5. The ureters, which have their origin in the kidneys, and are 



inserted into the upper part of the bladder. 

 tj t. The iliac vessels, which are bifurcations of the aorta and 

 vena cava. 



CHAPTER XI. 



OF THE SKIN AND ITS DISEASES. 



The skin of the horse consists of three parts, difi'ering in 

 appearance from each other, namely, the cutis, or true 



