90 



ICE. 



I 



R 



MARK 



O N 



T HE 



\ 



briny particles, than what adhere to its outfide. 



All this perfedliy 



ap-rees 



with the curious fad related by Mr. Adanson *, who had 



brought 



F 



bottles of lea- water, taken up 



differeni: 



parts of the ocean, in order to examine it and to compar 



falt 



nefs, when more 



at leifure; but both 



bottles containing th 



falt-water were buril by being frozen, and the water produced from 



king the ice, proved perfedlyfrelh 



This fad is fo fairly ftated 



and fo very 



that I cannot conceive it is 



ffary to 



that the bottles 



fuppofe f , without the leaft foundation for 



changed, or that Mr, Adanfon does not me 



-.shich the fea-water was thus altered upon- its being di£bhed 



he exprefsly obferves the bottles to 



njlance by. 



fo 



have b 



burfl. it' is obviou 



that the concentrated briny parts 



and were entirely drained 



N 



from the ice, which v/as formed of the freih water only.. 



The ice formed by Dr. Higgins from fea- water, confifted of th 



ach other weakly. Dr. Higgins took out the 



lamince, adhering to e. 



frozen 



from the velTels, wherein he expofed the fea-water, and 



nued to do fo till the remaining concentrated fea-water beg 



\ 



form cryilals of fea fait 



Both thefe experiments therefore by 

 prove what the Dr. intended to infer from thence ^ for 

 was wrong to take out fuch ice, which only confified oj thin lamh 



mean 



-"^ 



adhering to. each 



oth 



Had. he waited with patie 



would 



f Adanfon Hliloire naturellc du Senegal. Paris 1757, 4to.. p- 190- 



* Second fuppkmcnt, to the Probability of reaching the North Pole, p. 119. 



