Diseases of the Skin —Evternal 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 1—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. 
Prangé 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. 458. 
