Strangles, Infectious Rhino- adenitis. 89 



limbs, or around the point of primary attack attended by more or 

 less engorgement. When this engorgement has reached extensive 

 dimensions and is mixed with sanguineous extravasation it is 

 considered as having merged into petechial fever. 



Symptoms of Coital Infection. From four to seven days after 

 copulation there appear fever, dullness, stiffness, anorexia, swell- 

 ing and heat of the lips of the vulva, a yellowish opaque dis- 

 charge from its lower commissure, a deep dark red blush of the 

 mucosa, with points of distinct infiltration and thickening, de- 

 veloping into vesicles and pustules. The perineum, the groin 

 and mammae often show an extension of the congestion and 

 eruption. In exceptional cases deep abscesses form and L,etard 

 records a fatal case with extensive suppuration among the muscles 

 of the hind limbs and the haunch, inside the pelvis and along the 

 line of the aorta. 



Symptoms of Nervous Lesions. The lesions of the brain and 

 spinal cord are usually secondary and often appear when the less 

 dangerous superficial manifestations, are tardy and indolent, 

 when the exudates are indurated and indisposed to soften. There 

 may be violent delirium, pushing of the head against the wall, 

 movements of the limbs as if walking or trotting, roaring, plung- 

 ing, striking with fore or hind feet, trismus or other muscular 

 spasms. More frequently there is great dulness, prostration, de- 

 bility, vertigo, drowsiness, amaurosis, paraplegia, general paraly- 

 sis, coma. If the lesion is in the spinal cord the spastic or para- 

 lytic symptoms are likely to be confined to the hind parts. 



Fulminant or Septicemic Form. Bigoteau describes a rapidly 

 fatal, septicaemic form, with sudden onset, anorexia, extreme 

 prostration, uncertain stumbling gait, a deep blue color and 

 ecchymosis of the visible mucosae, violent heart action, pulse 

 weak and small, hurried breathing (45 per minute) temperature 

 102 to 106 F., often inability to rise and death from asphyxia 

 in from two to five days. 



Diagnosis. In mild and regular cases this is easy. The attack 

 in rapid succession of all the young, and still susceptible horses 

 in a stable or locality, and the uniform coincidence of a profuse 

 nasal catarrh, and the formation between the branches of the 

 lower jaw, of a diffuse, hot, painful swelling rapidly advancing 

 to suppuration and discharge are virtually conclusive. Simple 



