208 TRANSACTIONS OF THE [may 21, 
accurate measurements were not obtainable, but approximate 
measurements yielded. 
ba O i3T? ea O 135° 
hn i 135° 6 (ei 79° 
aK (NS e A i-i 131° 
The face b is negative, and e positive, and the latter was also 
noted on one of the specimens in the Columbia College collec- 
tion. 
There is also on Professor Chester’s specimen a third pyra- 
mid face which corresponded approximately to 52, It gave 
the following angles : 
ia O 50° 
it Va LTS 307 
i reel 130° 
also ie , ig—=143° 
The faces mentioned above are interesting, not alone because 
they are new to the state, but I am unable to find them recorded 
from any other locality. 
In none of the specimens which show the new faces are 
both ends of the crystal developed. The crystal figured is the 
one in Prof. Chester’s collection. 
MINERALOGICAL LABORATORY, COLUMBIA COLLEGE, May 21, 1894. 
Mr. Ries also read two additional papers entitled ‘‘ Notes on 
Artificial Crystals of Oxide of Zinc” and ‘ Preliminary Notes 
on the Pyroxenes of New York State,” both of which were illus- 
trated by specimens and by the lantern. On the crystals of 
