70 F. H. Bradley on Fish-remains in Western New York. 
Of course, these data are insufficient as yet to parallelize Mr. 
Conrad’ 
ining 
Art. IX.—Preliminary Notice of certain beds of Fish-remains, in 
the Hamilton group of Western New York; by Franx H. 
BRADLEY. , 
ticular masses of impure pyrites, which contain large quantities 
of the teeth, fin-spines and bony-scales, of fishes, and numerous 
ollusca. 
The layers composing these beds are very variable in thick- 
ness and in composition, some being quite solid and compose 
almost entirely of pyrites; others, thin and fragile, and interlam- 
inated with layers of black shale. The latter portions commonly 
contain the bones, while the more solid portions yield shells 
most numerously. 
t would seem that the sulphur of the pyrites must have come 
from the decomposed fish, and that the beds correspond to the 
deposits of fish-remains reported by dredgers in certain seas, 
while the surrounding bottom yields not a fragment. 
Information concerning the situation of these localities was 
~~ by Mr. H. A. Green in the January number of this 
ournal. ; 
So far as I have been able to ascertain, they had not been ex- 
plored by any one previous to my visit in July, 1864, at which 
s Shell Bluff and my Red Bluff group. But their rela- 
