Geology and Mineralogy. 479 
mian member, pent rh Ppa vl of red sandstones, and hold- 
ing a somewha t p ora akin to that of the Lower Permian 
of Europe. Deta ‘ls sate illustrations are also given of new s 
of Batrachians, Fishes, Insects, and Crustaceans, recently discov- 
ered, and an ana ysis. and comparison with other countries, is 
made of the remarkable develupment of the Lower Carboniferous 
series of Nova Scotia and New Brunswic 
After a short notice of the Devonian, which, in the region re- 
ferred to, is chiefly remarkable for its rich flora, in the main: dis- 
tinct from that of the Lower Carborniferous, and now numberin 
125 described species, the author proceeds to discuss the diffioul 
ties attending the study of the Silurian and Cambrian formations, 
in a region where they are much disturbed and a and asso- 
ciated with igneous beds of very varied character. On this sub- 
ject he remarks: 
“In the Acadian Provinces, as in some other parts of Eastern 
America, the great igneous outbursts, evidenced by the masses 
and dykes of granite which cut the Lower Devonian rocks, make 
a strong line of distinction between the later and older Paleozoic. 
here of these series are also , often very irregular in 
tribution, and there is little to distinguish mire from each pare 
— when their ages ma circum- 
ANCES 0) many y difficulties to the élshaifieation of all the pre- 
Decmiae rocks of Nova Scotia a and New Brunswick, difficulties as 
et very imperfectly overcome.” 
I 4 tig seemomar and in Eastern Maine, it appears that the 
me es Upper Silurian rocks are capped by felsites, chloritic 
schists and agglomerates of great berctagin- me having an aspect 
not unlike that of the older ioe while in _— Nova 
Scotia bag rocks appear arg hana the st 4 
Siluria all the ai - en the Low eects Silurian pe 
seems om ego been  alncunseaied by tbs of similar a7 
