280 DISEASES OF THE SKIN. 



prove " lousy" as well as rough, poor, and hidebound : for 

 half-starved and neglected animals are more liable to become 

 thus affected than such as are well kept and comfortably 

 stabled. The cleansing of the skin may have something to 

 do with this ; but T am disposed to ascribe more to poverty : 

 though to give a reason why these insects should infest 

 neglected in preference to well fed animals is an impossi- 

 bility. All our domesticated animals appear liable to these 

 vermin, though each kind seems to possess a species peculiar 

 to itself. AVhen lice are numerous, they occasion itching, 

 and cause the animal to rub or to bite its sides and quarters. 

 Occasionally they collect in particular places, and so disorder 

 the roots of the hair as to cause part of the coat to fall off. 

 Treatment. — Our first object is to destroy the insect : 

 after which, their recurrence will be prevented by improving 

 the condition of the animal, and paying attention to its 

 coat. A variety of medicines have been used to kill these 

 insects : I have but two, of the efficacy of which there can 

 be no reason to complain : one is tobacco-water ; the other, 

 a watery solution of corrosive sublimate. In some inveterate 

 cases the lotions may be advantageously combined, or the 

 drachm of sublimate may be dissolved in a pint of the 

 tobacco infusion. 



Take of Common Shag Tobacco, 3J. 

 Pour upon it a pint of boiling water, cover it up, and let it stand until cold : 



or. 

 Take of Corrosive Sublimate, 3j ; 



Boiling Water, Oj. 

 Let it stand until cold. 



Some persons use mercurial ointment, and a very effec- 

 tual dressing it is : it is, however, more troublesome to 

 apply, and less penetrative, than a lotion. 



WARTS. 



Everybody familiar with horses is acquainted with these 

 excrescences, nor need be told they are productions to which 

 horses are liable, and some in particular extremely subject. 



