DISEASES OF THE BRAIN AND NERVOUS SYSTEM. 433 



heating, sometimes following parturition, etc., but they are not specific 

 and they usually recover. These are cases of tetany. 



How to know it. — The first thing noticed will be the haw of the eye 

 drawn over the eye ball, showing more of the haw and less of the eye; the 

 nose is protruded; the neck straightened; the tail elevated and trembling; 

 the legs straddle and are as stiff as saw-horse legs; the belly is tucked up; 

 the nostrils dilated; the ears are as stiff as sticks; the respirations are hur- 

 ried; the muscles are as hard as board; he sweats profusely; and the most 

 serious point of all is the jaws are locked. If the disease is discovered at 

 the start, the jaws w^ill be found not to be locked, but very stiff and opened 

 with difficulty; but they usually lock tight in the course of twelve hours. 



SHOWING HOW FAR AN ANIMAL WITH TETANUS IS CAPABLE OF MOTION. 



If the head is raised, the haw is drawn completely over the eye; the tail 

 is more elevated; he trembles all over, and, if the head is pushed a little 

 farther up, he is liable to fall. He never lies down; cannot eat; drinks 

 with very great difficulty, and is in the most intense agony all the time. 

 Death usually follows in from three days to three weeks, but if he lives 

 nine days, he is likely to recover, and if he lives eighteen days, he is almost 

 sure to. 



What to do. — If it comes from a wound, and all the symptoms are 

 fully developed, there is no use doing anything but to destroy the animal, 

 and thus save a great amount of suffering; but if it is a mild case, give him 

 a chance. Give the purgative No. 48. Put him in a quiet, dark, loose 



