Veterinary notes for horse owners : a manual of horse medicine and surgery . an animal has been fed on highly nitrogenous food, the waste productsof the tissues will be much more unstable in their composition than they wouldbe were the percentage of nitrogen less. Again, we are aware that the circu-lation of both blood and lymph in the limbs of the horse—especially in the hind WEED. 507 extremities—is peculiarly dependent on exercise. Hence, the probable reasonfor lymphangitis appearing in the extremities ; for its selecting the hind limbsin preference to the fore ones ; and for its
Veterinary notes for horse owners : a manual of horse medicine and surgery . an animal has been fed on highly nitrogenous food, the waste productsof the tissues will be much more unstable in their composition than they wouldbe were the percentage of nitrogen less. Again, we are aware that the circu-lation of both blood and lymph in the limbs of the horse—especially in the hind WEED. 507 extremities—is peculiarly dependent on exercise. Hence, the probable reasonfor lymphangitis appearing in the extremities ; for its selecting the hind limbsin preference to the fore ones ; and for its being induced by idleness and highfeeding. Why it should occasionally occur, as it is said to do, while ananimaf is in a starving condition, though doing no work at the time, is some-what difl&cult of explanation. Perhaps the lymph, when no food has beenaiven for some time, becomes abnormally rich in nitrogen. I can offer noexplanation as to the preference exhibited by this disease, according to goodauthorities, for the near hind leg, rather than for the off Fig. 146.—Ulcerative lymphangitis. Owing to the existing inflammation, a large quantity of fluid escapes fromthe vessels into the adjoining tissues, and gives rise to the swelling. Thisfluid has a strong tendency to become consolidated unless it is promptlyremoved by the lymphatics and smaller veins, whose power of doing so isheld in abeyance as long as they remain inflamed. Hence, the advisability ofreducing the inflammation as quickly as possible, and of endeavouring toprevent its recurrence. The fact that two other kinds of lymphangitis (pp. 503 and 505) 508 GENERAL DISEASES. are caused by specific micro-organisms, suggests the probability ofthis form of lymphangitis being also infective. This disease is generally confined to cart-horses. SYMPTOMS.—The inflammation is usually limited to one hindleg, the near one, as a rule; although, in rare cases, both may be-come affected. Or it may appear in a fore leg,
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