23*^ Scientific News, Accounts of Booh, hfir. 



with acids, but their tafte is rather more acrid, and more nearly refembles that of folutions 

 of lead. The Yttria likewife differs from glucine, becaufe it is not foluble (like the latter) 

 in cauftic alkalies •, and becaufe the fait which it forms with the fulphuric acid, inftead.of 

 being foluble, as it is when glucine conftitutes the bafe, is on the contrary fcarcely at all 

 foluble J and, laftly, becaufe it is precipitated from its folutions in the acids by the prufliate 

 of pot-afli, which does not take place with glucine. 



The pieces of-Gadolinite treated by Citizens Vauquelin and Hauy, for the purpofe of 

 afcertaining the nature and charaders of that fubltance, were prefented to them by Meflrs., 

 Abildgaard, Manthey, and Neergaatd. 



Soc. Philom. No. 44, ^n, 9. 



NoU relative to the new Earth denominated Titria. By M. KlaPROTB. 



THIS earth, which contains Gadoliuite, not only poflefles the common property o£ 

 glucine, of forming falts of a fweet tafte, but it alfo readily diflblves in a folution of car- 

 bonate of ammonia. It neverthelefs has peculiar charafters, which, diftinguifhing it front 

 the earths, renders it in fome degree fimilar to the metallic oxides. With the fulphuric 

 and acetic acids, it forms cryftallized falts, of a pale rofe colour : it is precipitated from its 

 combinations by tannin and by Pruffian alkali. 



The proportion of Yttria in the Gadolinite, ftated by Ekcberg, is not very exa£l:. The 

 caufe of this may probably be attributed to the method he employed to feparate the Yttria 

 from ferruginous fubftances, which induced him erroneoufly to imagine that the fulphate. 

 of Yttria is not decompofed by fire. This decompofition, however, does take place, but 

 not fo readily as that of the fulphate of iron. M. Klaproth has afcertained by his analyfes^ 

 ihat Gadolinite is compofed of 21,15. parts of filex, 18. of oxide of iron, 59,75. of Yttria, 

 and 0.50. of alumine. This fmall quantity of aluminous earth is probably merely accidental, 

 and perhaps proceeds from fome particles of feld-fpath accompanying the Gadolinite. 



Note onjluated Alumine and Phofphate of Copper. 



M. KLAPROTH has completed the analyfes of the fluated alumine, named ChryoKte cf 

 Greenland. It confifted of 22r parts of alumine, 36 of foda, and 40^ of fluoric acid 

 and water of cryftallization. He confiders the difcovery of foda in ftony foffils as particularly 

 remarkable. It is'at leaft the firft inftance of fo great a quantity of ihis alkali being found 

 in a ftone, or rather in an infoluble fait. 



Cit. Vauquelin has repeated the analyfes of fluated alumine^ The refult was, alumine 

 ai, foda 32, fluoric acid and water of cryftallization 47. This chemift obferves, that in 



the 



