DISEASES O'^ THE HOKSE. 259 



into a black color by reason of extravasation of blood. There appears 

 early great constitutional disturbance, with much prostration and 

 weakness and generalized anthrax sjnuptoms. 



Treatment. — The treatment of these will vary according- to the sever- 

 ity. Insect bites maj'^ be touched with a solution of equal parts of 

 glycerine and aqua ammonia, or a 10 per cent solution of carbolic acid 

 in wat^r. Snake bites may be bathed with aqua ammonia, and the same 

 agent given in doses of 2 teaspoonf uls in a quart of water. Or alcohol 

 ma}" be given in pint or quart doses, according to the size of tHe animal. 

 In erysipelas the skin rnay be painted with tincture of muriate of iron, 

 or with a solution of 20 grains of iodine in an ounce of carbolic acid, 

 and one-half an ounce of tincture of muriate of iron may be given 

 thrice daily in a bottle of water. In anthrax the swelling should be 

 painted with tincture of iodine, or of the mixture of iodine and carbolic 

 acid, and if very threatening it may have the tincture of iodine injected 

 into the swelling with a hypodermic syringe, or the hard mass may be 

 freely incised to its depth with a sharp lancet and the lotion applied to 

 the exposed tissues. Internally iodide of potassium may be given in 

 doses of 2 di-ams thrice a day, or tincture of the muriate of iron every 

 four hours. 



STY, OK FUKUNCLE (bOIL) OF THE EYELID. 



This is an inflammation of limited extent, advancing to the formation 

 of matter and the sloughing out of a small mass of the natural tissue 

 of the eyelid. It forms a lirm, rounded swelling, usually near the 

 margin of the lid, which suppurates and bursts in four or five da3's. 

 Its course may be hastened by a poultice of chamomile flowers, to 

 which have been added a few drops of carbolic acid, the whole applied 

 in a very thin muslin bag. If the swelling is slow to open after having 

 become j^ellowish white, it may be opened by a lancet, the incision 

 being made at right angles to the margin of the lid. 



EXTKOI'ION AND ECTROPION, OR INVERSION AND EVERSION OF THE 



EYELID. 



These are respectively caused hj wounds, sloughs, ulcers, or other 

 causes of loss of substance of the mucous membrane on the inside of 

 the lid and of the skin on the outside; also of tumors, skin diseases, 

 or paralysis which leads to displacement of the margin of tiie eyelid. 

 As a rule, they require a surgical operation, with removal of an ellip- 

 tical portion of the mucous membrane or skin, as the case ma}'- be, but 

 which requires the skilled and delicate hand of the surgeon. 



TRICHIASIS. 



This consists in the turning in of the eyelashes so as to irritate the 

 front of the eye. If a single eyelash, it may be snipped off with scis- 

 sors close to the margin of the eyelid or pulled out by the root v/ith a 



