f 461 ] 
Experiment VIII. 
Another piece of paper, moiflened 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. 
Exprriment IX. 
My pulfe beat 84 flrokes in a minute, at the time 
when I drank a half pint glafs of the Matlock wa- 
ter; 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 neceflary to examine 
them. 
Experiment 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 phial, after being accurately counter- 
poifed in a very nice balance, was filled to the brim, 
with difliiled water, which weighed three ounces, 
four drachms, forty five grains and a half. The fame 
phial, exactly balanced as before, was then filled to 
the brim with Matlock water, of the fame tem- 
perature 
