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In these they are carried through the lymph glands of the abdomen into the great lymph duct, which finally pours them into one of the great veins not far from the heart. Tiny, branching lymphatic tubes are found all over the body, picking up what the cells leave of the fluid which has seeped out of the arteries for their use and returning it to the veins through the great lymph duct.
Now, although each of these fluids has its several channels, yet, if by any accident any one of them is obstructed, and there is so great an accumulation of the obstructed fluid that it cannot find vent by its natural channel, or duct, then you must carry off the redundancy by some other; for you well know, that that which can be carried off by one, can be carried off by all.
At least, it seems as if we then could die in peace! About noon we were startled by sharp cries of agony, and looking round, I saw Owen writhing in the most horrible convulsions. I went toward him, for, detestable as his con- duct had been, common humanity prompted me to see whether I could afford him any relief. But before I reached him, a shout from Flaypole arrested my attention.
On the other hand, if among some of them the liver is reduced to simple tubes, floating loosely in the body, as we have just seen it in the cockchafer among insects, these tubes are generally so profusely multiplied, and press so closely against each other, that they form a large compact lump a true liver, to sum up all from which issues, as from ours, a choledochian canal, a bile duct, i. e., which passes out into the intestine at the entrance of the pylorus.
The origin of the Mullerian duct is still obscure; comparative anatomy and ontogeny seem to indicate that it originates by differentiation from the Wolffian duct. Both open behind into the cloaca. However uncertain the origin of the nephroduct and its two products, the Mullerian and the Wolffian ducts, may be, its later development is clear enough.
INTESTINAL PARASITES OF HOGS. The Ascaris suis or common round worm is very commonly found in the small intestine. It may also work its way into the bile duct. Sometimes, after a hog has died, this parasite migrates forward into the stomach and gullet. It is usually found with its proboscis or thorn imbedded in the wall of the small intestine.
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