Geology and Natural History. 149 
ites is 770 feet. Succeeding the Lower Silurian on the Colchester 
side is a band of Middle and Upper Silurian, about 2,000 feet 
wide. This is the band which contains the Londonderry iron 
deposits. Here they are not apparent. On the Cumberland side 
the corresponding Middle Silurian band has a width of 3,000 feet. 
One fossil, a Zingula, was found in the lower part. 
Succeeding the Middle Silurian, on the Colchester side, is a 
great width of the Carboniferous formation. This shows neither 
limestone, gypsum nor coal. 
On the Cumberland side is the Carboniferous formation, which 
contains its coal fields. The part of this formation which immedi- 
. ately lies upon the metamorphic formations of the Cobequids con- 
sists of conglomerates and sandstones. One remarkable feature 
of these two was that they contained embedded blocks of syenite 
of 200 pounds and upward at a distance of 2} miles from the 
original rock of the mountain. Fossil plants embedded in the 
= sepia with these rocks are found closely adhering to the 
atter. ‘ 
found having abundance of rain prints, rill marks, fossil plants 
and abundance of footprints of small and large reptiles. 
One 
reptile had trodden on a fern leaf which lay in the rain-pitted 
3. On a shale (Brandschiefer) in the Lower Permian near 
Pilinitz in Saxony + by Evernr Geryitz.—This shale, according 
- acant, ; 
little Serpula of the Coal measures, made a fungus by Goppert ; 
esides species of ('alamites, Asterophyllites, A nnularia, Schizop- 
teris, Sphenopteris, Hymenophyllites, Odontopteris. Callipteris, 
Neuropteris, Dictyopteris, Cyatheites, Alethopteris, Walchia, Car- 
(. principalis Germar, C. Roesslerianus Gein., Pinites Naumanni 
Gutb., Sehutzia anomala Gein. A plate representing the wings 
of Blattine, the fruit Sigillariostrobus, Sphenopt 
fact pointed out before by Sandberger, and also by Prof, Geinitz 
for a Siberian locality—is a fact of great interest. : 
ies of Silica from a Meteorite ; by 
SKELYNE.—Maskelyne found this mineral in the meteorite of 
Breitenbach, in which it occurs in colorless grains, 1 to 3 milli- 
* 
9) Tr e 
mite and troilite. It has the form of a right rhombic prism (1) 
