436 Scientific Intelligence. 
solves in sqnonnrag hydrochloric acid, with a separation of floceu- 
Tent silica. Analyses: 
i Mg Fe Apatite iH 
I. By Oellacher, 4040. 35°85 0'38 O17 22°60=100°00 
IL By Kobell, 41:50 38°30 — — 20°50==100'30 
Formula according to Oellacher, Mg Sit+Mg H*; Kobell, Mg? Si+3H. 
rele ag in pope —Mr. T. S. Hunt gives the following analysis 
(Logan’s Rep.) of a serpentine from Ham—a variety of a greenish 
white sia Suuibitasarics ; 
Si Al, Be (loss) 
43-4 & 
A serpentine of a grayish- -green color fect Ireland, Cacia afforded 
* Silica 43°70, magnesia 23°46, alumina with peroxyd of iron 2300, 
water 11:57==101-73. G. =2°652—2:658. Another serpentine rock 
from near Nicolet rock, had the specific gravity 2°7 
rh Bowenite, and Williamsite.—J. ctrienel SmitH and G. 
J. Brusn. This vol. p. 211, 212. 
Ta naa —G. Ro: mes Werner’s Talc of Taberg in 
‘Seon “abioh according to Svanberg’s analysis is near chlorite. 
Clinochlore.—The following is a figure, natural size, of a large 
3. 
crystal of clinochlore fiom the cabinet of Thos. F. Seal, of Philadel> 
phia. The measurements ya vary so widely that we do not at P: 
publish our results. It has a rhombohedral aspect.—J. D. Dana. 
