20 Tenth Supplement to Dana's Mineralogy. 



Kopp's Jahrexbericht, 1859, 816). The mineral waa -washed with cold 

 it from adhering chlorid of magnesium. The insoluble portion gave : 



giving the formula 2(>Ig3B4_[.B)+MgCl,:a o 

 obtained by Ileintz and Potyka. 



BoKONATROcALCiTE [see Hayesine. p. .394, V, VIIT].— H. How has given the name 

 eryptomorphite to a hydrous borate of lime and soda, which is found in gypsum, near 

 Windsor, Nova Scotia (this Journal. [2],xxxii. 9). It occurs in ''^'^^^- "■■ """^""^ 



With a magnifying power of 350 diameters, Prof.'Robb found the mineraUo^b« 



^% ifa S % It B ^ 



Assuming 't'rmagnesialnd sulphlic acid" to he accllTtal, an/ deducting the 



magnesia as Mg S+J A, -^ he -"^l^^ -Jpj-^c ^j;^' -,^^»'^?S 





settled, we are not yet willing to admit that these names, as at present app!i« ' 

 each represent three or four distinct mineral species —o. i. b.] 



BouRNONiTE [p. 80, V].— F. Field has found this species at a m'"^® Jl^g^ It 



>anner with Rose's analysis olu» 



BauciTE [p. 133, I. II-IX] — R. Hermann has given the name T'xalite ioj^^ 



Chem., Ixxxii, 368).' The writer' has already^^provefl, from the «X'""'"''^j|'"ii_*i* 



Dana, and,^ previous to Ihe'^pubhiuSn of Hermann's pape?, it had also been detj" 

 mined by Kenngott and G. Rose {ZeiUthrfft der Geol. Getellscha/t, xiii, ^'^^l'., jd 

 paper by Rose had not then been received here, or it would have been V^^J^^^^ 

 ftaswer to Hermann. The crystals examined by Rose and myself were bexag" 



