228 DISEASES OF TRUE INFECTION. 



grayish-white or grayish-yellow, sometimes bloody, and in some 

 cases even purulent, with more or less odor. "We also see a 

 "snifiaing" respiration. This is particularly noticeable in short- 

 headed dogs (such as pugs or bulldogs). In all cases there is 

 catarrh of the larynx, bronchi, and bronchioles. Catarrh of the 

 larynx is generally marked by a loud, hoarse, dry cough, which 

 is particularly distressing to the animal, especially at night. As 

 the diseases advances it becomes moist and looser, and is easily 

 produced by a slight pressure on the larynx. Where there is 

 simple laryngitis, we do not generally see any visible increase 

 or difficulty in respiration. This is changed, however, as soon as 

 the large bronchial tubes become involved. In such cases we 

 see a marked increase in respiration, which gradually becomes 

 more intense as the inflammatory process goes downward into the 

 finer bronchi. Any pressure on the sides or tapping upon the 

 walls of the chest causes a very distinct, painful, distressing cough. 

 On auscultation we hear an increased vesicular breathing, as well 

 as dry and moist rattling bruits, which are of various forms and 

 intensity. 



If the inflammatory process has extended to the fine bronchi, it 

 is not rare to see the formation of lobular pneumonic centres — that 

 is to say, catarrhal pneumonia. Difficulty in respiration now 

 appears more pronounced; respiration is superficial but laborious, 

 as is proved by the inflation of the cheeks. The number of respi- 

 rations may increase from 60 to 80, and even more. The cough 

 is very painful, dull, and weak; the pulse is greatly increased, and 

 the temperature may increase to a marked degree, but it is remit- 

 tent. On auscultating we hear in the lungs snoring, groaning, 

 and wheezing sounds and rattling bruits (these last are moist and 

 numerous), also more or less blowing sounds in different regions. 

 We notice an increased vesicular respiration with sharp, prolonged, 

 expiratory bruits, and alternating bruits of a mixed character. In 

 the same region we may notice bronchial respiration. Percussion, 

 as a rule, is not very instructive. 



4. Symptoms of the Digestive Tract. The chief of these is catarrh 

 of the stomach, which may vary in intensity. There is entire loss 

 of appetite, vomiting of a thin turbid liquid, shiny or muco-puru- 

 lent, which is frothy. There are frequent discharges from the 

 bowels of a thin, muco-purulent fluid, occasionally streaked with 



