J 5 DISEASES Class I. 1.2. p 



tremities may not be perceptible ; as ftronger pevfons can better 

 bear Tome increafed exertion, and the confequent unneceflary lot's 

 of fome fenforial power; and in warmer climates the extremi- 

 ties may not be Co liable to become cold. 



Analogous to this I remember to have feen an inoculated child 

 about fix years old, whofe bofom and face, at the beginning of the 

 eruptive fever, were of a fiery red colour, and exceedingly hot to 

 the touch ; and whofe feet were at the fame time pale, and cold 

 to the touch. When on expofing the bofom and face to colder 

 air with the feet only flightly covered, the colour of the former in 

 a tew minutes became nearly natural, with little excefs of tangi- 

 ble heat, and at the fame time the feet became as warm as natural. 



Whence I conclude, that all unnecelTary increafe of ftimuli, as 

 of warm clothing, wine, and opium, is more injurious to fee- 

 ble eonflitutions than to robuft ones \ and that fuch Itimuli alone 

 are falutary to weak perfons, as increafe thofe actions of the fyf- 

 tem, which are immediately necelTary to life and health, as the 

 clafs of medicines termed forbentia, as peruvian bark, and other 

 bitters, and very fmall quantities of Heel, as thefe feem to increafe 

 the activity of the abforbent fyftem, both of the lymphatic and 

 venous ones, and thus fupply more nutrition, with all its falutary 

 confequences. And that the ufe of thefe forbentia, as well as of 

 the occailonai ufe of warmer clothing, wine, and opium, fhould 

 be discontinued, as feon as the fyftem can acquire the natural 

 habit of acting with fuflicient energy without them. See Article 

 II. 2. 2. 1. of the Materia Medica. 



The increafe of perfpiration by heat either of clothes, or of fire, 

 contributes much. to emaciate die body ; as is well known to jock°' 



Sj who, when they are a Hone or two too heavy for riding, 

 iind the quickeft way to leilen their weight is by fweating them- 

 selves between blankets in a warm room ; but this likewiie is a 

 practice by no means to be recommended, as it weakens the fyf- 

 tem by the excefs of fo general a ftimulus, brings on a premature 

 old age, and fhortens the fpan of life ; as may be further deduced 

 from the quick maturity, and ihortnefs of the lives, of the inhab- 

 Jiirtdoftan, and other tropical climates. 

 hetl the beat of the body in weak patients in fevers is increaf- 

 ed by the fiimiilus of the points of flannel, a greater confequent 

 fucceedsj, than when it is produced by the warmth of 



. j as in the former trie heat is in part owing to the increafed 

 .,i 'ii ■■. ity of I ft, and confequent expenditure of fenforial pow- 



latter cafe it is hi part owing to the influx of 

 the fluid matter c f it. 



He the warmth produced by eq utation, or by rubbing the body 



I limbs with a Uiooth brufh 01 hand, as is dene after bathing 



in 



