BOSTON 
JOURNAL OF NATURAL HISTORY. 
VOLUME V.— No. III. 
JUNE, 1846. 
Art. XXII.— NOTICES OF NEW LOCALITIES OF RARE MINERALS, 
AND REASONS FOR UNITING SEVERAL SUPPOSED DISTINCT 
SPECIES. By Francis Atcer. Read January 7th, 1846. 
Puaconire from New York. This rare mineral, which 
comes to us principally from Bohemia and Ireland, I have dis- 
covered among a suite of specimens of various kinds found on 
New York Island, near Harlem, by Messrs. Mathews and 
Johnson, of New York city. The specimens, which event- 
ually proved to be this mineral, were labelled Stilbite ; but 
their appearance was so peculiar, that I questioned at the time 
Whether they had been correctly designated, and determined 
to examine them carefully at my earliest convenience. I have 
since received two other specimens, better characterized than 
the first, from Mr. Johnson. The crystals are in a geode form, 
implanted on calcareous spar, and associated with silver-colored 
Mica and a few scales of Oligisto-magnetic iron ore. They are 
OL. v. 20 
