MANGE. 279 



ferent appearances in different subjects ; but they may be all re- 

 ferred to one or other of these heads. Numerous domestic reme- 

 dies are in use, but, I believe, no one article acts so favourably as 

 several united ; and it may, perhaps, not be too much to say that 

 the recipes already given will meet every variety : their efficacy 

 has been proved by long experience and a successful practice. 

 Tobacco-water is often used for the cure of this complaint, and, in 

 very slight cases, it frequently does some good : but, unless used 

 with extreme caution, it is a most dangerous remedy, from the 

 tendency all dogs have to lick themselves ; and, when they do this 

 with tobacco, the effects are often fatal, as I have several times 

 seen. Great caution is also requisite, for the same reasons, with 

 all kinds of washes in which there is any thing active, as mercu- 

 rials, &c. It is not an uncommon practice to dip mangy dogs in 

 the tanners' pits ; but it is a very filthy and not often an efficacious 

 one, except in very slight cases : in such instances, an infusion of 

 oak bark, with a little alum, would of course do as well. 



Having detailed the outward applications, it becomes necessary 

 to mention the internal remedies that are required. When mange 

 is generated, the constitution must be at fault to produce it ; and, 

 when it is taken, it will itself affect the constitution : so that in 

 all, except very slight cases indeed, some internal remedies are 

 requisite. In very full habits, and particularly in red mange, 

 bleeding is very proper^. I have also, in some instances, experi- 

 enced benefit from a seton placed in the neck as a counter drain, 

 particularly when the head has been much affected. It is also 

 very requisite to attend particularly to the food: whatever has 

 been injudicious, both as to quantity and quality, should be altered. 

 Frequently a total change in the manner and matter of feeding 

 assists the cure very materially. See the subject of Feeding. — 

 Purges, when regularly administered, often prove very useful ; for 



* In the Philosophical Transactions, No. xxv, p. 451, is detailed a case 

 of a mangy dog successfully treated by transfusing into hiin the blood from 

 a healthy dog. How far a similar result would follow in other cases is 

 doubtful. 



