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manual of modern farriery 
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 frequently 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 . The aorta descends in both cavities. 
o. The vena cava descends. 
p f p. The emulgent veins, which empty their blood into the vena 
cava. 
</, q . The emulgent arteries, emanating from the aorta. 
r , r. The spermatic arteries and veins, which are united by a cellular 
substance, soon after their origin is distributed to the ovaria. 
*. s. The ureters, which have their origin in the kidneys, and are 
inserted into the upper part of the bladder. 
t , t. The iliac vessels, which are bifurcations of the aoi-ta and 
vena cava. 
CHAPTER XI. 
OF THE SKIN AND ITS DISEASES. 
The skin of the horse consists ol three parts, differing in 
appearance from each other, namely, the cutis, or true 
