174 Carlisle Mineral. 
derstand that Prof. Dewey was of the same opinion. In 
the mean time, Prof. Cooper, of Philadelphia, who at first 
believed the mineral to be sulphat of strontian, wrote me an 
account of experiments, which had induced him to change. 
his opinion ; but it does not pets from his letter, or ne 
. MacNeven’s mention of own results in his atom 
theory, that either of these sii was acquainted with 
my opinion and analysis, which were communicated only 
to my classes, and by letters to a few friends ;* or with Dr. 
Torrey’ s analysis, read before the New-York ‘Lyceum early- 
in the present year. Prof. Hare writes me that he finds 
the mineral to be sulphat of barytes, so that now there is 
no difference of opinion respecting it. 
In an extract from the minutes of the Troy Lyceuni, 
forwarded to me by their gg the following facts are 
stated on the authority of Mr. 
he fibrous sulphat of coat is found in the town of 
Carlisle, Schoharie county, about eight miles s a N. W. 
direction from the Court-house, three miles W. of the 
Schoharie Kill, three miles S. W. from Sloan’s Village, and 
thirty-four miles W. of Albany. 
It is in the N. E. face of a hill, which is about seventy 
or eighty feet high, and three-fourths of a mile in extent. 
crosses the farms of Jacob Dickinson, Andrew 
Gein, and Abraham Mosier. 
teological Position —The fibres of the mineral are ver- 
tical, and in length from half an inch to two inches, standing 
between the layers of a soft argillaceous slate. By the 
lateral adhesion of the fibres, very extensive strata are 
ormed. As fragments are found in the soil on the side of 
the hill through its whole extent, there can be little doubt 
that the strata of this mineral are as extensive as the hill 
itself. The rock in which it is imbedded is overlaid with 
compact limestone, which contains impressions of shells, 
mostly pectenites. 
IT refrained from mentioning rg opinion and experiments in this Jour- 
nal, because I bad and still have reason to Boge that there isa real 
sulphat of bce tian found farther west in the 8 tate of Ne wYork, gece thiuk- 
ing it possible that some of ong _ tlemen had eheyenag oy the two, E waited 
for Guthes efocanchione 
” 
