274 DISEASES OF TRUE INFECTION 



tion of the cheeks. The number of respirations may increase from GO to 

 80 or 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 remittent. On ausculting we hear in the lungs, snoring, groan- 

 ing, 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, expir- 

 atory 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, frothy, turbid lic{uid Avhich is shiny or muco-puru- 

 lent. There are frecpient discharges from the bowels of a thin, muco- 

 purulent fluid, occasionally streaked with blood, and always accompanied 

 by a painful tenesmus. We may also find the abdomen very painful on 

 pressure, and, as a rule, contracted and tense. Yellow coloration of the 

 visible mucous membranes (icterus) is occasionally observed. 



5. Symptoms of the Nervous System. — The animal is very dull, espe- 

 cially its senses. There is a marked apathy and depression, and in some 

 cases deep coma. In a great many cases this condition may be accom- 

 panied by periods of excitement, nervousness, great restlessness, and even 

 true delirium. These periods, which might possibly be mistaken for rab- 

 ies, are not of any great length, as a rule, the animal sooner or later show- 

 ing signs of marked depression. Motor disturbances, such as twitching of 

 various groups of muscles, mostly the head and extremities, are noticed, 

 and, in some cases, convulsions or true eclamptic attacks. These follow 

 one another at long intervals, or keep the animal irritated for days. 

 Clonic convulsions of the maxillary muscles are very frec{uently seen. 

 They consist of a rapid and regular twitching of the muscles of the lower 

 jaw, sometimes confined only to chattering of the teeth, and occasionally 

 sufficiently strong to make a foam of the saliva. Besides this, we may see 

 symptoms of motor paralysis. The patients are unsteady and irregular 

 in their actions. In some instances they drag their hind legs, or occa- 

 sionally their posterior extremities lose their power and the animal is un- 

 able to stand; in rare instances, due to paralysis of the sympathetic, the 

 bladder and the lower bowel lose the power of their sphincters and urine 

 and fgeces are evacuated involuntarily. 



Other General Symptoms. — As has already been observed, the tem- 

 perature may rise or fall, and follow an irregular course, and it is apt to be 

 subnormal in the majority of fatal cases. When bronchitis increases in 

 intensity and a catarrhal pneumonia develops, it is apt to be accompanied 

 by considerable increase in temperature. In some cases, due to paren- 

 chymatous degeneration of the cardiac muscle, the pulse is small, thready 



