MANUAL FOR STABLE SERGEANTS. 165 



490. Strangles (distemper). An acute contagious and infec- 

 tious disease of horses and mules, occurring most commonly in 

 animals from 6 months to 5 years of age. 



Cause.- A germ, the streptococcus equi. 



FIG. 50. Contagious stomatitis. (By courtesy of Dr. S. Stewart.) 



Symptoms. The disease begins with a high fever, ranging from 

 104 to 106; and an abundant discharge from the nose which is at 

 first watery, but later becomes much thicker. The submaxillary 

 glands (the glands below the lower jaw) swell, become hot and 



