198 Second Supplement to Dana’s Mineralogy. 
Cuatcopyrire [p. 6 Analysis; from ee Pa., J. L. Smith, Am. J. Set, 
{2}, xx, 249.—Loc. in Californis Am. J, Sei. (2], xx, 
Cuonpropire [p. 186].—Transparent crystals of rene from ie at 
Pargas have been me eared by N. A. E. i. Lpigccancpe (Foes. xcvi, 118). The form 
is a right prism but hem fhedral 50 as to aspect, as with the 
drodite of Orange Co. The planes given a the common ee are J, it, ‘t $i, 1%, $8 
12; 7: H=114° 87/, &: 118691’, &: H=109° 3’, J: 8 B—159° 14’, Ts 1g 
ae 
156° 
The axes, a (vertical): 6: e=1-0361: . bo veld 
[The orks cites the figure by the as given in the third edition of his 
mineralogy, but has not seen his later vir in his fourth edition, and in this Jour- 
ees vol. xiv, aN By changing the position o oe making ¢ the 
axis, en corresponds very | oat ly with Scacchi’s second type of Humite. 
The ost of the crystal above given, J, it, i, 4%, 1%, becomes (see Min, p. 187), 
11, 12, O, 2%, 2% 
Chondrodite, Nordenskiéld. Humite, Type Il, Scacchi. 
12:17=114 115° 
O :2% = 136° 1’ 135° 524° 
O 33% = 109° 3/ 108° 58’ 
These angles fix the dimensions of the crystals, The en: is much nearer than 
Dubween either two of the three types of Humite.— D.] 
Curomioc Iron [p. 106].—Loe. in California, Am. 5 Sci, [2], xx, 82. 
Curysocotta [p, 309].—Analysis of a Chilian specimen by J. L.S Smith (Gilliss’s 
Exped.,. ii, 92): Si 31:35, Cu 42°51, H 21-62, Be 1-97, Xl 2-83=100-28; formula 
nearly Gu Si?-+-6H. 
CuRYSOLITE ote 84].—Analysis of a wine-yellow _— from the Eiffel by 
Th. Kjerulf (Nyt. Mag., viii, 178, and J. f. pr. Chem., lxy, 187): 
Si4221, Mg4929, Fes91, Al018 r 0-004, = 0°12==10072. 
neg = 48]—Mine in California, Am. J. Sci, [2], xx, 
Analysis of mineral see by T. H. siwiiay (Edinb. N. Phil. 
J. rose ii Par (each a mean of two ses) : 
C H N O Ash. ' 
1. Glasgow coal fields, 82:97 3°35 0-75 685 608= 100 
z 
¢. Sean: coal, 2°74 2-85 5°83 19°08 == 100 
2. rshire 43°42 2°94 8°25 ~ 15:39 == 100 
9. Fiechine, Splint coal, . 74°72 2°74 1-67 14:87 = 100 
Fe = AS ee a ee 
ic." ele: 17-385 14:98 = 100 
hard coals associated with Pe last two charcoals consist of 
NS N OS ee 
i, 80°63 516 0°84. 133 10°61 143 
2. 80-93 5°21 0°63 157 10°91 0°75 
area differ from the hard coals but slightly in composition, and Mr 
e Fibrous Anthracite, used by Prof. Bischoff, to that of Mineral 
[p. 853].—The metallic acids of the Columbite of Middletown, accord- 
cae f. pr. Chem., Ixv, 74), consist, in 100 parts, of Columbic (niobic) 
nous acid Tl? O* 18-26, Ilmenie acid f1 23:30. ‘The whole cou 
to Sata j in 
Tl Sn Fe Mn Mg 
1823 040 14:06 5°63 0°49 = 99°06 
n the vamaerot = (Go, T)+ 2k T. 
weight of um is’ stated to be 20420, and that of Columbium 
