5-22 Spa [Book VII. 



commotion ceafes, they difplode an elaftic vapour 

 with an audible noife, which fliows that they abound 

 in fixed air* At the fountain they both have a brilk, 

 pungent, chalybeate tafte; but the cathartic water 

 taftes bitterifh, which is not ufually the cafe with the 

 chalybeate. They lofe their chalybeate virtues by ex- 

 pofure, and alfo by keeping; but the cathartic water 

 iboneft. They both putrify by keeping ; but in time 

 recover their fweetnefs V 



The properties of the cathartic and of the chalybeate 

 fpring are, as might naturally be fuppofed, very dif- 

 ferent. The former is ufeful in cafes of habitual cof- 

 tivenefs ; the latter in diforders of relaxation and de- 

 bijity. 



SPA, in the bi/hopric of Liege. ' In and about this 

 town there are feveral fprings, which afford excellent 

 chalybeate waters : and in Great Britain they are the 

 moft in ufe of any foreign mineral waters. 



* The principal fprings are, i. The Pcbtui; 

 ion, fituated in the middle of the visage 5 2. "& 

 mtrt> about a mile and an half eaft from it ;- 

 leeck y near to the Sauviniere ; -4. Tonne . 



the left of the road to the Sauviniere; 5. t/rcz, 

 near to the Tonnelet; 6. Geronftere, two mile:, fouth 

 of the Spa; 7. Sarts, or Ntverfet, in the diftrift of 

 Sarts; 8. Chevron, or Bru> in the principality of Sta- 

 velot; 9. Couve, 10. Bever/eef n. bige, 12. Ge- 

 rcmonf, all near Malmdy. 



* ThePoybon is a flow deep fpring, and is more or lefs 

 ftrong or gafeous according to the ftate of the atmo- 

 fphere. The gallon contains ten grains of chalk, thirty 

 of magnefia, ten of mineral alkali, and five of aerated 

 iron It yields of fixed air one hundred and thirty- 

 two ounce meafures. It contains more iron than any 



* Elliot, p. 234. 



cf 



