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‘been referred to him for examination. He found it possessed 
all of the properties of, and in fact was simply clay. 
* He also exhibited two remarkable specimens of Rubel- 
lite, from Siberia, one’ was seven-eighths of an inch in 
diameter and one inch long. Its form was the hexagonal and 
hemi-di-hexagonal prism and basal-pinacoid. The crystal 
was remarkably transparent. The second specimen was 
made up of a group of twenty-four crystals, associated with 
crystallized tale, most of them were one-quarter inch in dia- 
meter and three-quarter inches long. They are composed of 
two varieties, the darker varieties showing invariably the 
hexagonal prism and pyramid. The lighter and more 
transparent crystals show the basal-pinacoid associated with 
the same form. 
Pror. A. M. Epwarps exhibited a specimen of Helix 
nemoralis, which he had captured, alive, upon the pavement 
of 29th street, between Madison and Fifth avenues, on the 
10th of last June, 1870. The day was wet, and the animal 
was crossing the southern sidewalk at the time. It had 
evidently come from the grounds of the Church of the Trans- 
figuration, which is situated opposite. The interesting fact 
connected with this capture is, that Helix nemoralis is a com- 
mon Kuropean species, and has not been found native in this 
country. How this one was-introduced could not be ascer- 
tained, but if one could thus get loose, many might also, and 
the species become common here also. 
Mr. F. A. Woop remarked, that a short time since he 
had received a number of specimens of Bulimus virgqulatus 
from Central America, from whence they had been imported 
in Logwood. They had been collected for their shells. 
They were dried, and had been in that condition for about 
five months, and were, to all appearances, dead. Notwith- 
standing, however, he found that they were alive, for they 
projected their soft parts from their shells, and in fact 
traveled about a drawer in which they were kept, as was 
made evident by their traces on the paper lining. But they 
PROC. LYC. NAT. HIST. N. Y.—VOL. IL. Alp 
