Symptomatology. 37 



frequency of the pulse ranges between 50 and 90 per 

 minute and in many cases it keeps a medium strength. 

 Towards the fatal termination, the pulse becomes weak 

 and may reach 120 or more. Finally it becomes imper- 

 ceptible. In the patient of emaciating stage, the pulse 

 is usually irregular, unequal and sometimes intermittent. 

 It should be noted that the pulse of the patient is 

 greatly accelerated by its locomotion even to a very 

 short distance. The heart-beat becomes forcible and it 

 can often be seem from without on the left side of the 

 chest. On auscultation, the cardial sounds are usually 

 loud. The first sound is always prolonged, muffled or 

 divided, so that in some cases one can hear two distinct 

 sounds. Similar disturbances sometimes may be heard 

 in the second sound or in the both synchronously. In 

 other cases a noise is heard simultaneously with or 

 immediately after the first. In still other cases, a pause 

 comes between the first and the second. Pulsation of 

 the jugular veins is a symptom characteristic of the 

 disease. In severe cases, it extends above the middle 

 part of the neck. 



Respiratory system.— The alteration of the tinge of 

 the nasal musous membrane has already been alluded 

 to. A very small quantity of mucus may be shed but 

 no rhinorrhoea takes place. Towards the final issue, the 

 animal sheds foam when oedema pulmonum occurs. 

 Upon percussion or auscultation, nothing abnormal is 

 found in the lungs. Number of the respirations is nor- 

 mal, but in the case of a high fever it is 50-60 per 

 minute. By exertion the rate of respiration of the 

 patient is increased more than in the healthy horses. 



Digestive tract :— During the febrile attacks the 

 patient's appetite is, more or less impaired, as is usually 

 the case with other febrile diseases or is sometimes 



