$IO Chemical and Miner alogual Nomenclature. 



foberil of Werner. — Amphibolc for eryftallifed hornblende.— 

 Pyroxene, a!fo eryftallifed hornblende ; at leaft I have reafon 

 to think fo, for of the eleven external characters of both, 

 given by La Metherie, there is only one in which they ab- 

 solutely differ, that is, the electrical. — Staurotide for ftauro- 

 lit€, the name very properly impofed by La Metherie inftead 

 of the compound name it bore before. — Axinite I believe to 

 be only a variety of thumerftein. — Acl'inote for a&inolite, the 

 termination lite moft properly denoting a ftone. — Thallite for 

 delphinite, the name already given it by Sauflure. — Jdocrafe 

 feems, as I conjecture (feeing no exact account of it), a va- 

 riety of olivin. 



I pafs over feveral new names, as euclafe, dioptafe, cha- 

 hafie, See. as they may poffibly denote new fpecies, which I 

 wifh were fettled in conjunction with Berthout or Van Buch, 

 or fome of the Wernerian fchool. Yet even thefe denomi- 

 nations, we are told, are only prov'ijlonal, being hereafter to 

 be altered as analyfes may require. 



I muft here add, by way of note, that C. Guyton, in re- 

 viewing the firft volume of my Mineralogy, Ann. Chem. 

 p. 105 and 106, has fallen into two miftakes, which I am 

 perfuaded his candour will prompt him to acknowledge. The 

 firft is, in ftating that my experiments on the fufibility of dif- 

 ferent ftones and earths were made in limeftone veffels, 

 whereas they were in Heffian crucibles. The fecond is, in 

 ftating the alleged infulibihty of barytic earth and lime aa 

 the reful t of my experiments, whereas I exprefsly quoted 

 Lavoifier, having myfelf made no experiments on fuch mix- 

 tures. (See Mem. Par. 1783, p. 599 and 600.) Other 

 writers have frequently imputed to me miftakes of Bergman, 

 though I exprefsly quoted him. 



III. A 



