* 
120 : Scientific Intelligence. 
are quantitatively unlike and physically —— nee comparing the 
well crystallized specimens of the former with nodules of the 
latter there is a remarkable resemblance desi ole and the ex- 
ceptional state in which Whitney formed datholite near Lake Su- 
perior, viz., in = Eas Wed white and sara nodules like the finest 
marble or some 
ose re arthy) jemaiiee of the new borate. 
Selenite is oat hapuectty found with slicoborocaleite and arag- 
onite occasionally. The new borate has been met with in gypsum 
from Newport, about six miles east of Windsor; was identical 
by its blowpipe reaction and qualitative analysis, and its powder 
gelatinized like that of the Brookville mineral. The Newport 
stalline. 
New localities for — Both Brookville and New- — 
.—At the former an impure earthy gypsum has silicoborocal- 
cite and selenite together in nodules, and natroborocalcite in dis- 
tinct nodules, sometimes both kinds in a seam of fibrous gypsum. 
Other purer kinds of white gypsum and selenite also, hold it alone. 
Anhyd ite does not contain it. At Newport, it isin white gypsum. 
At both places the nodules are harder inside than out; hardness 
about as 3:1 respectively; qualitative analysis showed HO, CaO, 
BO,, NaO; in several specimens, the microscope showed distinct 
prisms; hence the mineral is concluded to be natroborocalcite. 
saudi of theoretical and actual pemeee from formulas 
and analyses of this mineral ecleee. 2 Resse 
How’s a formula, NaO 2B0,+2CaO 3BO +15H 
Lunge’s oe 2B0,)-+5(CaO #80.) aH 
How. 
Cale. Found. Cale. Found. 
oy, SEE Ree 5°82 5°58 7-82 21 
Lime, 12°95 12°69 14°71 14:20 
agnesia,....-... 6 
OEY, sa cue 35°49 36°85 34-04 49 
Boracic acid, ..... 45°74 44°3 44-02 44°10 
100°00 100- s 100-00 100-00 
As regards all the constituents, I see no reason, on comparison 
of statements, to accept Dr. L.’s formula in place of my own. 
_ 2. 2t Siluriens de la Bohéme, Introduction. 
du Byat. § Silur. du Centre dela a vol. iii) ; par Joacumm Bar- 
BANDE. Geologist Barrande here announces the dy moned 
of vol. iii ili of his great work - the Bohemian Silurian System, 
tH ds of the Paleozoic. e volume is illus- 
trated by 16 eyes ae a ib The. one adnate fog thy Silu- 
