f 461 ] 



Experiment VIII, 



Another piece of paper, moidened in the fame 

 manner with the fyrup, was placed over a glafs of 

 water, as foon as it was taken from the fpring. The 

 paper fuffered no change of colour, although it re- 

 mained, an hour upon the glafs. 



Experiment IX. 



My pulfe beat 84 ftrokes in a minute, at the time 

 when I drank a half pint glafs of the Matlock wa- 

 ter 5 in 20 minutes my pulfe rofe to 86 ; in half an. 

 hour after they funk to 82, and continued to vibrate 

 the fame number of times for an hour, which was 

 as long as I thought it was necefTary to examine 

 them. 



E X P er 1 men t X., 



The mercury in the thermometer,, when immerfed; 

 in each of the baths, flood at 68 : in the river Der-- 

 went, which flows through the valley of Matlock,. 

 at 52. Thefe experiments were made in the month; 

 of June 1772., and the weather was warm.. 



Experiment XL, 



A four ounce phialj after being accurately counter- 

 poifed in a very nice balance, was filled to the brim ; 

 with diftilled water, which weighed three, ounces, 

 four drachms, forty five grains and a half.. The fame 

 phial, exaclly balanced as before, was then filled to, 

 the brim with Matlock water, of the fame tem- 

 perature. 



