92 MANUAL OF EQUINE MEDICINE. 



involve other mucous membranes and the skin in various 

 parts of the body. The skin being pigmented, the purplish 

 petechial spots are not often seen except in parts where it 

 is not coloured. 



The pulse is feeble, often dicrotous and accelerated. 

 There is great debility and prostration. The temperature 

 generally rises 3° or 4° R 



The bowels are at first confined in most instances, but 

 purgation is easily induced. The faeces may be blood- 

 stained, and abdominal pain is frequently present. There 

 is impaired appetite through the course of the disease, and 

 a hoarse hollow cough is often present. 



The petechial spots in the nose frequently slough and 

 leave raw surfaces, from which issues the dark-brown sero- 

 sanguineous discharge above mentioned. The tongue is 

 sometimes found swollen, with vesicles on the surface. 



The animal moves with difficulty, owing to the stiff" and 

 painful state of the joints. 



In many cases enteric complications are very severe, and 

 in every case sudden extravasations into the mucous mem- 

 brane of the alimentary tract may cause death rapidly from 

 excess of the internal hsemorrhage. Similarly, extravasa- 

 tions may occur in connection with other internal struc- 

 tures, and, if extensive, may cause sudden and fatal 

 collapse. 



Prognosis. — Is difficult, owing to the fact that cases in 

 which the early symptoms would lead us to expect a 

 favourable issue may at length terminate fatally. 



Morbid Anatomy. — The blood is non-coagulable and of 

 dark violet tint ; the red cells are altered, and the white 

 cells are increased in number. 



The cutaneous swellings and subcutaneous tissues of the 

 swollen parts are infiltrated with dark red, feebly coagulable 

 exudation. 



