[ 457 3 



the vibrations of my pulfe from 84 to 80, and from 

 92 to 86. But the ftimulus of the water foon be- 

 came fuperior to the fedative powers of the cold to 

 which 1 was expofed ; for within the fpace of half 

 an hour my pulfe rofe to 90 in the firft, and to 100 

 ftrokes in the fecond trial. At eleven o'clock be- 

 fore noon, when the air was warm and ferene, the 

 water in a much fhorter time excited its force, in- 

 creating the velocity of my pulfe from 90, to 109 

 vibrations in a minute. Thefe experiments evince 

 the heating quality of Buxton water, and fuggefl to 

 us the precautions to be obferved in the ufe of it- 

 Small quantities mould only be drunk at once, and 

 frequently repeated ; the belly fhould be kept foluble 

 with lenitive Electuary, or any other mild purgative 

 and at the beginning of the courfe, the patient may 

 be directed to fuffer the water to remain a few fe- 

 conds in the glafs, before he fwallows it. For this 

 celebrated fpring abounds with a mineral fpirit, or 

 mephitic air, in which its ftimulus, and indeed its 

 efficacy refides, and which is quickly diffipated by 

 expofure to the air. 



The honourable and ingenious Mr. Cavendifh has 

 mewn by his Experiments on Rathbone Place water, 

 Ph. Tranfactions, vol. LVII, that calcareous earths 

 may be rendered foluble in water, by furnifhing them 

 with more than their natural property of fixed air. 

 And it has lately been difcovered that iron alfo may be 

 fwfpended by this principle, in the fame menftruum *.. 

 It appeared therefore highly probable to me, that a 

 chalybeate impregnation might with great facility 



* Vid. Mr. Lane's experiments, Ph. Tranfa-flions, Vol. LIX. 



Vol. LX. II. N n a be 



