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44 



SPRINGS. 



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REMARKS o N T H E: 



In T A NN A we difcovered on the fide of the, harbour towards the 

 Volcano, feveral hot fprings, called by the natives Doogbos. The 

 water came out of the black ftratum. of fand-ftone mentioned be- 



fore, clofe to the edge of the 



fea 



and at high-water 



wells 



fometimes covered by the fea 



V/e faw feveral of thefe hot fpring 



each other : and, as 



there were little cavities under them,, we cleared them of the rub- 

 billi, and after the water had filled the cavities and overflowed for 

 fome time, I took my portable thermometer,, with Fahrenheit's 



- 



fcale, made by Mr. Ramfden, (v/hich had been that day, in my 



■ 



cabin, at 78" and which, having been carried clofe to my body in: 

 a pocket, I found at 8o%) and having placed it in the hot well, fo 

 that the whole bulb and tube were covered, the quickfi I ver rofe 

 foon to 191°, but after having been for five minutes in the well, it 

 did not rife above that degree. I took the thermometer out, and: 



cleared the well 



better, and made the excavation of the fVone 



below deeper, and then immerled it again during ten minutes, but 



; was done Auguft the 17th, 



found it all the time 



9 



Thi 



h 



1774, at 4" 30' P. M. 



at high-water. 



We returned the next 



r 



morning about nine o'clock,, when the water was low ^ and, upon 

 immerfmg the thermometer as before, we oblerved the quickfilver 



F 



tQ rife to 187° in the fpace ofone minute and a half; at which de- 



the thermometer continued feveral mi- 



gree it remained, though 



6 



Butes 



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