DISEASES OF THE NERVOUS SYSTEM. 



401 



and the jaws closed. The membrana nictitans, on lifting the 

 head, extends almost over the eyeball. The tail is drawn up, the 

 animal carrying it stiffly. The ears are stiff, and stick straight 

 up; and the nostrils become peculiarly dilated. The pulse varies 

 according to the excitement. The bowels are usually consti- 

 pated, the urine scant. If the animal lies down, his limbs stand 

 out, stiff as four sticks. If the case is far advanced, he cannot 



Fig. 121— Lockjaw. A well developed case. 



get on his feet again. AVhen the symptoms are greatly aggra- 

 vated, the animal fights and struggles, the body becomes bathed 

 with sweat; if the animal is not raised in five or six hours, he 

 dies from exhaustion. 



Treatment. — Quietude is of the greates-t importance. The 

 animal should b© placed in a darkened, out of the way place. No 

 persons except the one to administer medicine or the doctor 

 should be admitted, and even they should only go to him three 

 times a day. 



Every drug in the pharmacopoeia has been tried. Experience 

 26 



