MAD STAGGERS. 189 



thrusts its head against the rack or manger, stamps and 

 kicks convulsively, rears, hangs back, and breaks the halter 

 shanks, or leaps with his fore-feet into the manger. The 

 pulse is frequent, hard, and wiry; respiration difficult; eyes 

 fixed, and pupils dilated; mouth clammy, and sometimes 

 containing half-masticated food. Visible mucous membranes 

 injected, and sometimes of a yellow tinge. Faeces hard and 

 dry, and sometimes coated with yellowish mucus. The fits 

 increase in number and severity, the animal soon falls in a 

 convulsive fit, dashing about, and sinks exhausted. The 

 stomach may rupture, and vomiting occur shortly before 

 death. 



This form has been erroneously described as phrenitis, and 

 all the symptoms have been regarded by some as denoting 

 an inflammatory disease, but we can distinguish readily be- 

 tween the two diseases as shown by the subjoined table : 



STOMACH-STAGGERS WITH PHRENITIS, OR INFLAMMATION OF 



DELIRIUM. THE BRAIN. 



A common disease, often enzootic Very rare. Never enzdotic or 



or epizootic. epizootic. 



History indicates the cause of re- History indicates the cause to be 

 pletion of the stomach. some local injury; sometimes 



due to disease of the ears. 



Comes on suddenly. Originates and progresses slowly. 



Marked signs of derangement of Usually very slight functional dis- 

 alimentary canal. turbance of stomach and intes- 



tines, indicated by costiveness. 



Febrile symptoms easily dispersed. High fever of a persistent type. 

 Severe symptoms of pain. Stupor, listlessness. 



Colic, sweats, tremors. No signs of colic, and rarely sweats. 



Paroxysmal derangement, and se- Permanent uneasiness, varying 

 vere delirium. very slighly in intensity. De- 



lirium occasionally marked, but 

 more frequently coma. 



