382 CHAPTER 54. 



to prevent griping, will effect a temporary clearance. Or a drachm of 

 tartarised antimony may be given for six consecutive mornings before the 

 horse is fed, followed on the seventh day by a dose of physic. A drachm 

 of calomel for two or three consecutive nights, followed by a dose of 

 physic given on the third morning fasting will also answer. The small 

 worms, which inhabit the rectum, may sometimes be cleared away by 

 injections of a weak solution of salt, or of turpentine and linseed oil, or 

 infusion of quassia. 



A change of diet is desirable. Salt in the manger is beneficial. Min- 

 eral and vegetable tonics are useful in improving the condition. Worms, 

 however, notwithstanding the temporary clearance effected by medicine, 

 are apt to reappear after a time. 



784. Worm in the Eye. 



In India a worm is occasionally found floating in the aqueous humour. 

 The treatment consists in puncturing the cornea at its upper inner 

 margin. The humour will then escape, and will carry with it the worm. 

 The humour soon re-forms, the wound readily heals, and in general no 

 after-injurious result ensues. The inner margin is selected for the opera- 

 tion because the cornea at that part is least dense ; and the upper instead 

 of the lower margin, because the aqueous humour, which gradually re- 

 forms, will be less likely to again escape (whilst the wound is healing) 

 than if the incision has been made at the lower part ; and the resulting 

 cicatrix on the cornea is less likely to interfere with the vision. 



