A24 Scientific Intelligence. 
of an alkaline bicarbonate marking 5° or 6°. The piece of limestone 
in the first case becomes covered with subacetate of copper, and this 
subacetate, in the next step, changes to malachite ; or if prolonged, to 
a double carbonate of copper and soda. The malachite is in small 
silky globules. 
3. On the artificial formation of Malachite; by M. Henri Ross, 
(Kénigl. Preuss. Akad., Oct., 1851.)—When a solution of sulphate of 
copper is precipitated in the cold by carbonate of soda or potash, the 
precipitate is at first voluminous, and of a blue color, but left for a 
while and then washed, it becomes more dense and of a green color. 
It has the composition of green malachite as found in nature. 
4. On the supposed Dimorphism of Zinc, (Konigl. Preuss. Akad., 
Jan., 1852.)—M. Gusrar Ross has examined the supposed pentagonal 
dodecahedrons afforded by the zinc furnaces of Silesia, and upon 
which M. Nickles announced this as one of the forms of this metal, 
and has pronounced them aggregations of grains instead of simple 
crystals, and concludes that we have yet no sufficient evidence of the 
dimorphism of zinc. 
5. The Quader-Formation of Germany.—On page 151 we have 
given the title of two works of M. Geinitz on the Cretaceous formation, 
greensand of Aix-la-Chapelle, of the Salzberg near Quedlinburg, and 
of Kieslingswalda in Silesia; and as the Upper Quader-sandstone itself. 
LIST OF THE FOSSILS. 
Callianassa antiqua, Otto. Crassatella arcacea, dm. 
Faujasi, Otto Venus faba, Sow. 
Serpula filiformis, Sow. Trigonia aliformis, 
Belemnites quadratus, BZ Arca (Cucullzea) glabra, Sow 
Turritella sexlineata, Rom. Pectunculus sublevis, Sow. 
Rostellaria papilionacea, Goldf. Cardium Ottoi (C. Ottonis), Gein. 
—— vespertilio, Goldf. Gervillia Solenoides, Defr. 
~ Cardita Goldfussi, J/ii//. (—=Pholadomya Ostrea laciniata, Vilss. 
om.) 
The grey chalk-marl (kreide-mergel) of the hill (Schlossberg) at the 
village of Heimburg, comprising the Triimmer-kalk (the Conglomerate 
of the Sudmerberg, near Goslar,) is connected with the green sandy 
marl below it by similarity of organic remains, in the same manner as 
the Upper Quader-sandstone is united with the Upper Quader-marl in 
one and the same cretaceous series. This series of sandstones (t 
‘Lower and Upper Quader of M. Beyrich), greensand and green sandy 
