356 ee to Dana’s Mineralogy. 
in pal (15 p.c. of this carbonic aci a and 8°86 of water) 3 c. insoluble in 
acids. From such a mixture, after a series of estimates, altimoree 1 is judged to 
have ac et gees corresponding to the percentage : 
Al Ca 
25° 88 13°00 ie 33 14:29 : : 
for which the formula given is [H? 41+ R Si] + [4(Mg a+) x + (ig a) Si] 
[Thus we have a new analysis of a stone which some labelled Balti- 
ite. It is very wide from the original Baltimorite of Thomson (from 
Hills, Maryland); and better entitled to the name than many o 
stones that could be gathered from our serpentine regions en as an analysis of 
a eral from a se 
account of the mixtures with i ; as a correction of former pact of the m 
Baltimorite, it is only pérblatiig the subject.] 
Barnuarnire [p. ee —Dr. F. A. Genth, Am. J. Sci., xix, 17. 
dene Silane a? Range by von Waltershausen of a hea 
bai das m the dolomite of Binnen Valley in the Kuve, = (Poe 
xciv, mer, 14) Be 792, Sr8 9: 9:070, Si 0685, Al 2° 155-299: 702. It occurs in 
Bavtrre “in fe rc en of this mineral n aggregation of 
oe or grains caller aay p Salas in pe ee 
has been received by the writer from Dr. F. A. Gentb. Under the mere 
the excess of silica in the analysis might be due to mixed quartz, I examined it 
- ysis mig 
a Haters bat could not we 2 er there was any quartz ere : 
a 
and For 
make the species a feldspar, in which the oxygen mrt oy the anes perosyi 
and silica, according to the former, is 1:3: 24 — 
cxirE, Duf. Min,, iii, * he a siliceous coral eats shire ling to Kenn- 
ans, py Wien Acad, x, 
(Kenngot i p- 225]. “ip of the mica of Greenwood Furnace, by C. v. Hauer 
Not. ean of results 
1 Mg k 
4021 19°99 aM 155 2115 522 0-90 peg beer 
Oxygen ratio for 2 Bi, 1:113:213. tg 1:2, as in most biotites. The paper 
contains a review yses of bi 
[Smith and Bros obtained for the pase ratio from their analyses of this biotite 
11°26 : 9°38: 20°63. The sum _ Daag ah hag bases equals 2064, or just the 
oxygen of the ani, and ¢ vy. Hauer’s analysis, é 
ponding to the e general ile (R3, i) eg See further, P. ite. 
Brsmuratne [p. 33, 503]. Sash ~P of bismuthine in Rowan Co., North Carolina, 
F. ahiangy. J. Sci., [2], xix, 
az [p. 131].—R. Schenck eer Pharm. xc, 1 3, and J. f. pr. Ch» 
Ixi, 3 i, 313) shows by analysis that the eee of Kony is a aaa or argillaceous 
ae [p. 167]. Eiger ae: according to ae Dr. J. Lawrence Smith, 
is identical with dy solite. He obtained (Amer. J, ci, [2], xviii, 372,) as a mean 
Si on Mo 5116 Fe 278 41017 loss by heat 190 
Analysis of boltonite by v. Haner ingens gin Min. Not., No. 12): 
§i 1332 Fe380 a2 Mg 2117 © (by loss) 32°71 = 100 
“utes abut ete wnt es the carbonates in which it was 
lis.of yon ‘von Hauer difer ss st te 
ae papsend, te Sea ae aetna concen anita omer 
BF 
