5i6 Jix-la-Cbaptlk. [Book VII. 



wailied with them without foap. The gallon contains 

 about two fcruples of lea fait, the fame quantity of 

 chalk, and a dram and half of foffil alkali. They are at 

 firft naufeous and harfh, but by habit become familiar 

 and agreeable. At-firft drinking alfo they generally 

 affect the head. Their general operation is cathartic 

 and diuretic, without griping or diminution of ilrength; 

 and they alfo promote perfpiration. The quantity to 

 be drunk as an alterative, is to be varied according to 

 the conllitusion, and other circumilances of the pa- 

 tient. In general, it is beft to begin with a quarter, 

 or half a pint in the mornmg, and increafe the dcfe 

 afterwards to pints, as may be found convenient. The 

 water is beft drunk at the fountain. When it is re- 

 quired to purge, it fhould be drunk in large and often 

 repeated draughts*/ 



The heat of the different baths of the Aix-la- 

 Chapelle waters varies from one hundred and fix of 

 Farenheit's thermometer t;o one hundred and thirty. 

 In bathing it is proper to begin with the moil tem- 

 perate. 



c BATH has long been famous for its warm chaly- 

 beate waters. There are feveral fprings, but their 

 waters are all of the fame nature. There are fix 

 baths; but the principal are the King's bath, die 

 <j>uen's bath, and the Crcfs bath. The others are 

 only appendages to thefe. The two- former raife the 

 thermometer to 116, the latter to 112. The water 

 when viewed in the baths has a greenifh, or fea co- 

 lour : bet in a phial it appears quite traniparent and 

 colourlefs,.and it fparkles in the glafs. It has a very 

 flight faliae, bitterifh, and chalybeate taile, which is 

 not difagreeable a and fometimes ibmewhat of a fulphu- 



* Elliot on Min. Wators, p. 119, &c. 



reous 



