FLOWER OF SULPHUR. 91 



viously reduced by blistering; that firing 

 would then prevent any return of the com- 

 plaint, whereas if the firing were performed 

 in the first place, it would tend to fix the 

 swelling, and render it incurable. I do 

 not believe there is any ground for this 

 opinion. 



The hot iron is the most effectual remedy 

 for those ulcers of the skin, which depend 

 upon farcy or glanders, 



FIXED AIRS, (See Carbonic Acid Air J 

 FIXED ALKALI. (See Alkali,) 

 FLAG, or Yellow Water Flag. The juice 

 of this plant, which grows plentifully near 

 rivers, is a strong purgative in the human 

 system, but has not been tried in the horse, 

 FLIES, SPANISH. (See Cantharides.J 

 FLOWERS OF SULPHUR, or Briyn- 

 stone. This is much used by farriers as an 

 ingredientin alterative medicine. It is pro- 

 cured from the impure brimstone or sul- 

 phur, which is found in the neighbourhood 

 of volcanoes, hy sublimation. 



Flower of Sulphur is not perfectly pure, 

 however; it still retains a small quantity of 

 vitriolic acid, and other impurities, which 

 may be carried off by washing ; it then 



