164 THE EQUINE HOSPITAL FORMULARY. 



adding sublimate solution (1 in 1,000). If large hsemato- 

 mata have formed, it is well to remove the contents with a 

 Pravaz's syringe, having first disinfected both the skin and 

 the instrument. After removal of the extravasation, an 

 antiseptic dressing should be applied with a moderate 

 degree of pressure. Sometimes a blister of cantharides, or 

 perchloride or biniodide of mercury is preferable to the 

 knife either over the affected spot or near it. 



If there be bursitis over the withers, an exploratory 

 trocar may be passed, and after removal of the serum or 

 blood, compresses applied. Or rubbing in sublimate oint- 

 ment (1 to 10 of lard) may be tried near the affected spot or 

 over it. 



Sore places should be cleaned and powdered with a 

 mixture of iodoform and starch or tannic acid. When 

 healing has occurred, the collar should be provided with a 

 soft covering of waxed cloth or hare-skin. 



Withers, Fistulous. — See Fistula. 

 Worms in the Digestive Organs. 



Tapeworms. — Oil of male fern, oil of absinthe, or oil of 

 turpentine. 



Nematodes. — Aloes with one drachm of antim. pot. tart., 

 and followed by tonics, sulphate of iron, and santonine. 

 The water-supply and the drainage should both be in- 

 vestigated, and on all worms passed boiling water should 

 be poured. 



Strongylus tetracanthus. — Give a purge and follow up 

 with tonics and stimulants. 



Oxyuris curvula. — Cathartics and medicated enemas. 



Oxyuris vermicularis or Trichocephalus dispar. — Inject in- 

 fusion of quassia or diluted tinct. ferri perchloridi. 



