. Diseases of the dog and their treatment. nation of the rectum, insert-ing the thermometer, from certain poisons, so-called hemorrhagic en- EXAMINATION OF THE DIGESTIVE APPARATUS 31 teritis, from proctitis (inflammation of the rectum), in rare instances,from distemper, infectious hemorrhagic gastro-enteritis, septicaemia,and in cases of mycotic meat poisoning. Blood may be found on thesurface of the stool or mixed with the pus. Which portion of the intesti-nal track the blood comes from can be arrived at in the following way:If the blood is found to be mixed all through the material in the fa
. Diseases of the dog and their treatment. nation of the rectum, insert-ing the thermometer, from certain poisons, so-called hemorrhagic en- EXAMINATION OF THE DIGESTIVE APPARATUS 31 teritis, from proctitis (inflammation of the rectum), in rare instances,from distemper, infectious hemorrhagic gastro-enteritis, septicaemia,and in cases of mycotic meat poisoning. Blood may be found on thesurface of the stool or mixed with the pus. Which portion of the intesti-nal track the blood comes from can be arrived at in the following way:If the blood is found to be mixed all through the material in the faeces itcomes from the stomach or small intestines. But if the blood is in clotsor streaks and lying on the surface of the stool, it has come from thelower part of the large intestine or the rectum. The color of the blood isdiagnostic; when the blood has escaped into the intestine in the anteriorportion, it is dark brown, a greenish-brown, or even black; but from thelower intestines the blood is hardly changed in color and in proctitis the. Fig. 15.—Eggs of intestinal parasites in faeces (round worm). Magnified 70 times. blood is normal in color, and is easily detected in the faeces, either in theform of pure blood or bloody mucus. The odor of the faeces is unpleasant, nauseating or offensive, especi-ally when the animal has had a meat diet, and particularly so in cases oflong-standing constipation from mycotic meat poisoning; or in the latterstages of septicaemia, in distemper, diarrhoea, toxic enteritis, or infec-tious hemorrhagic gastro-enteritis. Free bile in the faeces gives them aparticularly offensive odor. The presence of the following objects in the faeces may aid in diag-nosis by giving an important clue to certain disorders; stones, sand,pieces of bone, straw, grass, splinters of wood, hair, portions of sloughedtissue, whole or portions of parasites (ascarides, oxyuris, taenia) (Fig. 15),and more minute examination by means of the microscope may determinethe nature
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