THE EQUINE HOSPITAL FORMULARY 139 



three or four hours for two or three days. Saline purga- 

 tives are most valuable. When the lead has been taken 

 for some time, so that the poisoning is chronic, a moderate 

 purge and then iodide of potassium, in a moderate dose 

 at first, may be given. 



Yew-tree Foliage. — Oleaginous purgatives and stimu- 

 lants, e.g., sp. amm. arom., and nitric ether are useful. 



Corrosive Sublimate. — The best antidotes are vvliite 

 of egg mixed with water, or thick starch, or arrowroot. 



Opium. — Give stimulants, alcoholic, strong coffee, etc., 

 and keep the animal awake by leading it about. 



Hellebore. — Aperient medicine, followed by tonics and 

 stimulants, is best. 



Water Drop-wort. — Vinegar and gruel. 



Cantharides. — Oily and demulcent liquids in large 

 quantities. 



Poll Evil. 



Slight pressure, steadily applied by means of a towel 

 moistened with cold applications and folded several times, 

 may cause a reabsorption of extravasated material. The 

 horse should be rested in a loose-box, and if not convenient 

 to place the animal in a box, a neck-strap should be used 

 instead of a halter. When the acute stasre of inflammation 

 has subsided, ointment made ol one part of sublimate to 

 ten of lard should be applied, and renewed again after 

 a time. 



Should pus have formed, longitudinal incisions must be 

 carefully made, avoiding the occipital artery, and, if possible, 

 keeping IJ inches away from the ligamentum nuchse, unless 

 necrosis has already occurred, in which case section of the 

 funicular portion and removal of the necrosed parts is 

 advisable. Counter-openings may be necessary, and setons 



