. Diseases of the dog and their treatment. animals that are fat or have short necks; insert theneedle beneath the larynx or through the crico-thyroid ligament, the solu-tions to be used are 1 per cent, solution of morphine or codeine. Theseinjections should be made daily or every other day. Frequently in chronic catarrh we use narcotics to stop the severecough produced by irritation of the membrane—morphine, codeine,heroin, and in rare cases bromide of potassium or chloral are not of much use in the dog. As to other affections of the larynx, with the exception of tuberculo


. Diseases of the dog and their treatment. animals that are fat or have short necks; insert theneedle beneath the larynx or through the crico-thyroid ligament, the solu-tions to be used are 1 per cent, solution of morphine or codeine. Theseinjections should be made daily or every other day. Frequently in chronic catarrh we use narcotics to stop the severecough produced by irritation of the membrane—morphine, codeine,heroin, and in rare cases bromide of potassium or chloral are not of much use in the dog. As to other affections of the larynx, with the exception of tuberculosisof the larynx and certain tumors described by Cadiot (both conditionswhich are extremely rare), the only one of practical importance is Hemiplegia Laryngis. This is occasionally observed. In this affection the animal has a pe-culiarly shrill bark, which is varied in tone, becoming harder and harsherand spasmodic, accompanied by great difficulty in respiration, markeddyspnoea and roaring sounds during respiration. The condition may be. W. McDougall, del. MODE OF ADMINISTERING MEDICINAL VAPORS. BRONCHITIS 137 produced by dragging on a collar, folloAv traumatisms, as in one case ob-served, that is, fracture of the first rib on the left side, and it is also seenfollowing the pulmonary form of distemper. The treatment consists ofthe application of a galvanic battery over the region of the recurrentnerve, the administration of nux vomica internally, or of strychnia,sulxutaneouslv. DISEASES OF THE AIR-PASSAGES AND BRONCHIAL TUBES. Catarrh of the Windpipe and Bronchia; Bronchitis. {Trachitis and Bronchitis Catarrhalis.) Etiology.—Catarrh of the air-passages and of the bronchia occursvery fretjuently in young, weakly, or debilitated dogs. It sometimesoriginates primarily, but, as a rule, it occurs as a secondary disease. Itis caused by cold, especially by breathing cold air when the animal iswarm; and in pet dogs we see it cjuite often where the animals will lienear the register


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