Geology and Natural History. 237 
distinct ; and in the east the two series containing them are un- 
conformable, rof. Heer, however, somewhat impairs the value 
that formation, He even goes so far as to hold that the plants 
of the American Chemung and Hamilton groups must be Carbon- 
iferous also. This, however, proceeds from want of acquaintance 
on his part with the rich Middle Devonian flora of Eastern 
America, the resemblance of which to that of the Coal-measures, 
im general facies, and especially in its richness in ferns, has misled 
other European paleobotanists accustomed to regard the Middle 
Devonian as comparatively barren in plants, whereas in fact it 
contains a flora comparable in richness with that of the Coal-for- 
mation, though distinct as to species 
Mr. Daintree has recently read before the same society a paper 
on the Geology of Queensland, Australia, in which he refers to a 
Devonian flora existing there; and Mr, Carruthers, who has exam- 
ined hig specimens, identifies some of them with species found in 
the Devonian of North America. We have thus the wonderful 
fact of the extension of a Lower Carboniferous and Devonian flora 
5. Pp 
the Proceedings, containing records commencing with April 4, 
wing : 
P ‘Aa Henry Wurtz, in an article (p. 103) on the rock of the 
alis 
having G=2-94, from Prof. Cook (Geol. of New Jersey, p. 215).— 
and, s 
thene 40, he gives for the calculated result— 
_  $i53-5, 3118-2, Pe 8-7, Mg 8-7, Oa 7-4, K, Na 27=99°2. 
[We strongly suspect from the resemblance of the rock to that 
t - 
ents are essentially the same that have been obtained in analyses 
of the New Haven rock.—s. D. D. ; 
A mica schist filled with minute crystals of kyanite covers large 
areas, according to Professor D, 8. Martin, on New York islan 
East 424 street, near the Union Depot, and also between 
46th streets, west of Madiso i 
Tock is probably continuous from one point to the other. 
