248 Scientific Intelligence. (Marcu, 
The colouring matter he considers as only mechanically mixed 
with the sulphate. It is dissipated or destroyed by a moderate heat. 
VIII. Celestine from Dornburg, near Jena. 
This substance has been lately discovered at Dornburg, consti- 
tuting a bed in marl. It is fibrous, and has a blue colour, similar to 
that from Pennsylvania. Its specific gravity is 3°9536. Stromeyer 
has analysed it, and found its constituents as follows :— 
NRT ards waite oyniiasih: in’ «dalla mises’ case 
Sulphuric acid. oko. sneweeeis coves 42°949 
Lime eeeeseee e@eeseeaeeveaeve e@eeseeeeoeeeaeeve . 0:057 
CPGE OF BON 5 6 es cin ote we eiawin'ge aca: Cee 
ES A a ae ee eee 4b isionge 0:051 
Bitumen and: Water, oi ofav 2 <.clee ee 66-0, 0 LOp 
99°582 
Loss eeeeoeeoeoe eevee cee seeececeeeeeee 0°418 
100°000 
The lime, iron, and clay, in Stromeyer’s opinion, come from 
the marl in which the celestine is found. The blue colour is owing 
to the bitumen, which is only mechanically mixed. 
IX. Vulpinite. 
This isa name given by some mineralogists to a mineral found at 
* Vulpino, not far from Bergamo, in Lombardy. In Italy it is known 
by the name of marmo bardiglio di Bergamo. It was noticed in 
the Journal de Physique under the name of pierre de Vulpino. 
Haiiy, relying on an analysis of Vauquelin, gave it the appellation 
of chaux anhydro-sulphatée quartzifere. Stromeyer has lately 
analyzed it, and found its constituents as follows :— 
ne ME ee aS Ph toe bate ee 
DUIDDUNIC ACI | «se op sp ap n> me werd Oe 
CURIE 2 Let ates onuatieh vee cas 0:090 
Water a 2 PPO Eb OOR 
99°838 
Loss @eecrveoeveeeoeev ee eeee ee eegeee 0°162 
100:000 
Another specimen of coarse scaly vulpinite, which he received 
from Professor Pfaff, of Kiel, was composed of 
PARE) i's Wale co's tae is v0 oes doen ee eee 
Sulphuric acid ......... és masts ¥ee 9 DE Gu 
Quartz eeecee eo vaeesrecevserarcsece 0:260 
OT IE a ES rR 
MS Le Fee ek Es Ais 0°957 
i Loss evecreos eves ecusseevneeveorerseeves 0-711 
100°000 
