4 oS MEDICINAL SPRINGS 



fummer as to reduce the mercury to fix degree's 

 in the thermometer. 



5. The water is not always in equal quality. 

 The new fpring gives 142! pints in the hour; 

 the old fpring 465; and the bath fpring 517, 

 one-half. 



6. I could not determine the fpecific gravity 

 of the water of Lokarne, for want of inllruments. 



HI, Chemical dimly/if. 



FROM the account above given of the phyfi- 

 cal qualities of the waters of Lokarne, it -ap- 

 pears, that they contain in their compofition, 

 but a fnvall proportion of extraneous and mine- 

 ral matter. The fame thing appears from ex- 

 periment. 



i. A pint of this water afforded by evapora- 

 tion only two pennyeights and twenty-eight 

 grains apothecary's weight. Nearly a fourth 

 part of this refidue was fine liliceous powder; 

 the retl calcareous earth in combination with 

 marine and aerial acid. 1 have never indeed 

 met with any fpring-watcr entirely free of fali- 

 ted or aerated lime. Hut the infulion of a few 

 drops of the nitrous folution of lilver foon dilco- 

 vcr the pretence of the marine acid, by commu- 

 nicating to the water, if it contains any of that 

 acid, au opaline colour. In a few days the fedi- 



incnt 



