CHAP. II.] PERSPIRABLE MATTER IN BOWELS. 81 



part of the animal and another, we have many times 

 found purging physic, given in the usual dose, fail 

 of the effect intended, and come off in the shape of 

 profuse perspiration. Not only in those large and 

 decided doses, that are intended to produce much 

 effect, but milder ones also, as alterative-laxatives, 

 often turn out of their course, and, as well as 

 diuretics, not unfrequently disappoint us in the 

 same way, the latter also coming off by the skin 

 instead of urine ; which is, besides, a very well- 

 known natural operation, usually described by a 

 vulgar saying, " The more you sweat the less you'll 



p ." Tears, or any other evacuation of the 



water that moistens the animal system, are liable to 

 the same kind of comparative remark. When ex- 

 cessive salivary secretion attends the tooth-ache, the 

 glands of the mouth and jaws carry off so much 

 water as to affect the quantity of urine voided, and 

 we may infer that a diuretic would reduce the in- 

 flammation of the jaws. It follows, of course, that 

 the less sweating a horse has got, the more he must 

 stale, and accounts for the profusion of the latter 

 kind of evacuation in winter, when he scarcely ever 

 sweats, and perspires but little, comparatively speak- 

 ing. As a farther proof of this connexion between 

 the secretions and evacuations, let any one notice 

 a horse when he first stales in consequence of 

 taking a diuretic, and he will find a transparent 

 water hanging in little globules at the end of each 

 particular hair of his coat, all over his carcass. 



e 5 



