536 Vete7'hiary Medicine. 



The occurrence of the rheumatoid affection as a complication 

 of influenza and contagious pneumonia in the horse, usually ap- 

 pears not earlier than 15 days after the outset of the pulmonary 

 affection and may be delayed, according to Palat, for 102 days. 

 Palat who had excellent opportunities for observation in army 

 horses found that about one in ten was the ratio in which the 

 rheumatic affection followed these pulmonary diseases. 



The pulmonary lesions in these affections are essentially those 

 of uncomplicated influenza, or contagious pneumonia. 



Cercbro-Spinal Lesions. Nervous disorders are occasionally 

 seen in rheumatism in man (dullness, prostration, delirium, coma, 

 spasms) and traced in different cases to hyperthermia, congestion, 

 exudation, embolism and toxins. In a few cases in the horse, 

 cerebral complications have been observed. Olivier saw a horse 

 with lachrymation, closed eyelids and hot, tender forehead, which 

 showed at the necropsy articular inflammation, and sanguineous 

 effusion in the cranium, encephalon, frontal and maxillary 

 sinuses and ethmoid cells. Jacob records two cases (mare and 

 horse) in which rheumatism was complicated by meningo-en- 

 cephalic congestion but without necrops3' as both recovered. 



Digestive system. In man rheumatism has been exceptionally 

 preceded by pharyngitis, dysphagia, and diarrhoea. In the horse 

 Haj'cock has seen concurrent congestion of the phar3'ngeal mu- 

 cosa, Olivier congestion of the stomach and intestine, and Jacob 

 diarrhoea and abdominal pain, Leblanc and Palat record cases of 

 peritonitis accompanying articular rheumatism in the horse. 



SYMPTOMS OF ACUTE ARTICULAR RHEUMATISM IN 



THE HORSE. 



Chill, hyperthermia, lameness in fetlock, hock, knee, shoulder, stifle, hip, 

 elbow, tendons, sheaths, burste, bilateral, shifting, swelling, heat, tender- 

 ness, decubitus, joint semiflexed, pain on extension or flexion, signs of 

 cardiac disease. Course : rapid to recovery, improvements and relapses, 

 metastasis, debilitj\ 



The attack is u.sually sudden and marked by a slight chill, shivering 

 or staring coat with hyperthermia and lameness. The temperature 



