116 Dr Turner on the Means of Detecting, fyc. 



then the assay gives a strong brown stain to moistened tur- 



— —A. - . • *> • i ■ n 



--^•cy cannot beconfound- 

 _wvo produced by lithia. 

 The carbonate and sulphate of lime give rise to the same 

 phenomena, though their eifect is less distinct ; and the colour, 

 as in the case of strontia, does not appear till the lime is re- 

 duced to its caustic condition. I have examined a consider- 

 able number of siliceous minerals containing lime, in some of 

 which, as datolite and apophyllite, that earth is present in a 

 large proportion ; but none of them, whether alone, or with 

 flux, give a red colour to the flame of the blowpipe. It is 

 probable, from this fact, that strontia, did it chance to occur 

 in a siliceous mineral, would likewise be inert ; or if it ^ : ' 

 redden the flame, it would be under jjuse**— 

 would distinguish it from the v* - 

 would be eonvp^- ' 

 not - 



