A34 Scientific Intelligence. 
Dr. L. D. Gale 0°9030 of carbonic acid corresponding to 1°73289 
grammes of the sesquicarbonate. (Stansbury’s Rep., p. 420.) 
Alum from Alum Point, Great Salt Lake. ‘This alum is found by 
Dr. L. D. Gale (Stansbury’s Report, &c., p. 420) to be a manganese 
alum, and crystallizes in acicular 4-sided (?) prisms. Taste like that 
of ordinary alum but less strong. It occurs as an efflorescence on @ 
slate rock. The specimen received by Dr. L. D. Gale was recrystal- 
lized before analysis, as it had lost part of the water. It afforded in 
an imperfect analysis 
Mn Al 8 
730 89 40 18:0 
Heavy Spar.—Analysis of a crystalline variety from Pee 
near Dust, by E. reser ese b. pr. Pharm., xxiii, 348; Lieb. 
‘Ko opp’s Jahresb. f. 1851, p. 8 
BaS sr8 Si Fe H 
93°92 0°86 3°75 0°64 0°50=99°67T 
Arragonite of Thurnberg, near Durlach.—Analysis by E. Rizcet, 
sitid }—carbonate of lime 96:04, carb. strontian 2°20, #e 0-06, water 
‘62. 
Cale Spar.—The crystallography of calc spar has been revised with 
‘great mie by F. X. M. Ziprz.. The whole number of distinc! 
forms i viz: 36 rhombohedrons, 79 scalenohedrons, 7 pyram mids, 
and 5 prismatic — the terminal plane. enkschrifien der 
mathem.-naturw. Classe d. kais. Acad. d. Wissensch. in Wien, Bd. 
ili; and Lieb. u. Kopp’ Jahresb. f. 1851, p. 817-820.) 
Carrara pane ie] of best Shes — ded P. M. Kzpret, on 
quartz dani 0: Het 
Limestones. paras of Silurian limestones of the Lake Superior 
region, by Foster & Wurrney, loc. cit. p. 192. The limestones con 
tain for the most part a large amount of maghesia. 
[ a af Lake Superior Region ; Foster & Wurtney’s Rep.» loc- 
cit., 
“ee —Crystals of Selenite are common in connection with an 
impure limestone in the Des Moines “un Iowa. D. D. OWEN, #€P- 
Geol. Survey, Wisconsin, etc., 1 . 9 
_ On Lancasterite and Magnesite ; 3 L. Smrru, and G. J, Brvst.— 
This vol, p. 213, 214 
Apati Piamsioa oe has analyzed the pseudo-tpatiic of ngs 
thaupt, anid ‘obtained the following constitution, showing that it is 
impure apatite . f. pr. Chem. ly, 486). 
ee: Mg Fe cess ' 
4720 489850 178 | 
Ths toons core i cael eee 
