Diseases of the Skin.— External Parasites. 203 



successfully used, and I have no fault to find with those 

 agents, save that they usually require frequent repetition. 



Tobacco-water is a popular remedy with some persons, 

 but from its narcotic effects, through absorption, it is not 

 an advisable one. 



Carbolic acid is another, and in the use of this drug still 

 greater caution is required ; its strength should never be 

 less than i — 50 of soap-suds or whale-oil. 



Mr. Fleming* observes: "The remedies proposed for 

 scabies in the dog are exceedingly numerous ; and it would 

 be altogether beyond our object to attempt an enumeration 

 of even a tithe of them. They consist of baths, liniments, 

 and ointments. Among the former may be mentioned the 

 sulphuret of potassium — one part to five of rain-water ; 

 also corrosive sublimate, one part to fifty of water;, 

 carbolic acid, in the proportions of one to forty of soap- 

 suds or glycerine, is also a good remedy, but requires care. 

 The liniments, are, perhaps, better applications than either 

 the baths or ointments. A very good preparation is the 

 following : Oil of tar one ounce ; sulphur, one ounce ;, 

 common oil, one pint. To be allowed to stand, in the sun 

 or near a fire, for some time, and frequently shaken. 

 Prang^ recommends the subacetate of lead (liquid) and 

 olive-oil, of each thirty parts ; sulphur, fifteen parts. 



" With regard to ointments, the Helmeric pomade already 

 mentioned is very efficacious. Mercurial ointment, and 

 different compounds of mercury, are much resorted to ; but 

 these are readily absorbed by the skin. Dressings of 

 tobacco have the same disadvantage. It is generally a 

 good plan to wash the animal well with soft-soap or car- 

 bonate of potass, in warm water, before applying the 

 parasiticide. The latter should be washed off the skin 

 after it has been applied three or four days. If the skin 

 is covered with long, thick hair, it is advisable to have 



this cut off. 



' * " Veterinary Sanitary Science," vol. ii. p. 4S8- 



