Sarcoptic Acariasis in Solipeds. 167 



two classes of agents, represented by oils or ointments on the one 

 hand and lotions and baths on the other the latter is preferable 

 unless the skin is so covered as to shut out the air. This in 

 itself would asphyxiate the parasite irrespective of the active 

 agent. But again a complete inunction of the whole body is 

 liable to arrest cutaneous transpiration and cause subnormal tem- 

 perature and internal congestions. Hence with universal oily 

 dressings it is safer to cover but one-half of the body at a time 

 and to alternate the sides at intervals of one or two days. 



The skin having been well prepared by the softening and re- 

 moval of the crusts one of the following may be used or several in 

 succession : Creosote 5 parts, alcohol 5 parts, water 25 parts ; 

 creosote i part, lard, vaseline or oil 25 to 40 parts. Thoroughly 

 rub in two or three times at intervals of from three to five days. 

 Oil of tar may be used in the same combinations. So with the 

 other coal tar products. I<ysol, aseptol, creolin, and chloro- 

 naphtholeum are most conveniently mixed with water : naphthol, 

 and naphthalin, in alcohol or oil : and benzo-naphthol in alcohol. 

 Carbolic acid i part, oil 40 parts may be used and relieves itching 

 somewhat. Tar water may be applied, or -tar i part, vaseline or 

 lard 3 parts, to be used on a limited area only, lest it check trans- 

 piration. Or tar and sulphur J^ lb. each, green soap and alcohol 



1 lb. each (Roll). Tobacco i part, water 25 parts, in decoction 

 acts well, or as a cheaper agent the refuse of the tobacco factories 



2 ozs., oil I lb., sulphide of potassium i part, water 25 parts is 

 effective. Or potassium sulphide 10 parts, potassium carbonate 

 2 parts, lard 300 parts ; or sulphur 2 parts, potassium carbonate 

 I part, lard 8 parts ; or powdered cevadilla 4 ozs., burnt alum i)^ 

 oz., sulphur 2 ozs., olive oil i quart. 



The itching may be lessened by lotions of acetate of lead or in- 

 unctions of eucalyptol or menthol in oil. 



In cases that are weakened or emaciated a rich diet and a 

 course of tonics (nux vomica, gentian, iron, or arsenic) may be re- 

 sorted to. 



Prevention. Any stall that has held a horse with scabies or 

 a suspected one should have any litter, manure, and fodder con- 

 tained in it removed and burned, every precaution bfeing taken 

 against dropping anything on the way to the fire. The stall 

 should then be deluged with boiling water or treated throughout 



