350 Sixth Supplement to Dana’s Mineralogy. 
‘ [The known planes of Epidote enumerated aoe to = vertical zones, cor- 
responding with the tables in the Mineral ogy, are as follows: O; 44, 4, 1-i, 24, 
= t-4, ~T-i, 3-1, -2-4, -1-i, 4; fi 3-3; 1- 9, 2-2, 4-2, he 2: -5-5; 8-3, -3-3; 
—t-1; 4,1, £1, 4: 1-2, cae 5; 44, a t-2, It may be repeated a Ecez 
in ir tite lettering, i stands for o jaflaiey, and the ~ indicates that the 
refers to the clino iagonal. Otherwise the symbols are those of Naumann, "emo 
that the useless P ig a ed.—p. | 
Eristitarre [p. 38 d IV].—H. How has detected this species in Nova Scotia 
in trap at Mar, heroes seven miles east of Port Geo orge (this M epee p. 33), It 
accompanies fine stilbite, and is in small reddish rhombic crystals nearly or quite 
+ and sometimes the only lining in shallow cavities, ‘Ana alien is afforded Mr 
Si El Fe Ca K H 
1. 58°57 15°34 1:58 7-00 0:99 0-99 15°42 = 99°89 
I. 58°35 16°73 — 187 ~~ 210 ~~, 44°93: LOU 
é second analysis is of a Nova Scotia specimen of uncertain locality. The for- 
mula is (}Na+2Ca) Sit+AlSi®-+-5tr. 
Ervsesc ITE [p. 38, and IiT].—An ee erubescite from the mine of Ra- 
mos in Mexico afforded (, Bergem (L. and B ae Jahrb., 1857, p. 894), Sulphur 
23° he copper 62°17, iron 11- 79, ditver 2°58. a ‘476. 
Case [p. 267, and II].—The crystals of euclase Bi e Urals, announced in 
Suppl v, Bocce: according to a ee ieee: planes (Poge., ciii, 348, tak- 
ing the same planes for the fundamen habus’s paper, -8-3 in Min., 
#4; 1-9; 1,-1, 7; 3-3; 2-2, i-2, -2-2; 8-3; 4-4; Br. 204,44 6-2. 
ed Fo: 
p. 31). It has hardness 45, and gelatinizes perfectly with muriatic acid before 
after ignition. Co inaiposttins on acco according to Mr. How (mean of t 
Bi #1 Oa Na H 
41°26 29°60 1171 5°29 12°73 
= nearly the cree ratio for R, #, Si, H, 1:3:5:8, whence Heddle’s formula 
$Na+ Ca) Sit+AlsSi2t-+-sH. 
ames [p. 190, vn = Il, If, IV, V].—A crystal from granular limestone 3. 
Auerbach is figured by Hessenberg (Min. Not., p. 22), which has the new plane ? 
Grrsrcstre [p. 233, and pe i J. ee has described re vol, ~ 64) fine large 
hexagonal line) 
pears to be Gieseckite (pseudomorp us nephe 
from mg bord ihe N. Y. "They occur in ‘granular limestone oo frees — 
i ‘ rites, Some crystal yer Pp cleavage; 
pen epee being waxy. The lapis also vary much. These diverts 
+ cols to Prof. Brush, show — the crystals = sci aaa - the parte re 
placed y a single fee O:1 eo 133° to 1379, but ap tly between 135 
il oe ith the on prea Beg we , 
1. heal 
difference of 
e tee 
8:48 88 Eat gf ries 
