XI. Notice respecting the Geological Structure of the Vicinity of Dublin; with an Account of some rare Minerals found in Ireland.
By William Fitton, M.D.
Communicated by L. Horner, Esq. Sec. to the Geological Society.
The following observations are to be ascribed principally to the
late Rev. Walter Stephens. I present them to the Geological Society
in their present imperfect form, with the hope that they may attract
the attention of mineralogists to the country in the vicinity of Dublin;
for they are sufficient to shew that very interesting information
may be expected from a correct examination of that district; which
from its situation is easy of access, and presents many advantages to
the observer. I shall subjoin to a brief statement respecting the
geological structure of that country, an account of some minerals of
not very common occurrence, recently found in Ireland.
The city of Dublin is placed in a flat limestone country, at the distance of about five miles to the northward of a range of mountains, which form the verge of a mountainous district, extending from thence for more than thirty miles to the southward. Through this tract there passes in a south-western direction from the shore on the south side of Dublin bay, a broad body of granite, bounded on
