CALICITES OF NEW YORK 0 
In 1860 Hessenberg published in the third instalment of his Mineralogi- 
cal Notes, a short paper on “‘Some Rossie Calcite Crystals.’’ He notes two 
new positive scalenohedrons 2R1;° (15.7.22.4) and 32?R'/¢ (60.38.88.35) both 
of which are advanced by him with some misgivings as to their true indexes 
and the latter of which was measured on only two of the three edges and to 
the nearest even degree, showing considerable uncertainty in determination 
due probably to poor reflections. 
In 1878 Irby! published a Monograph on the Crystallization of Calcite 
in which he classes the two scalenohedrons 2R7/° and 3?R+4; of Hessen- 
berg in the list of doubtful forms. 
In 1888 Nason published a bulletin on Some New York Minerals and 
their Localities, which includes a short paper on the calcite crystals collected 
by Professor Emmons from the Rossie lead mines. Mr Nason states in 
his introduction that he has not attempted a technical description and 
consequently we find in his work no references to the previous work of 
Zippe, Hessenberg and Dana, and his crystallographic description is con- 
fined to the recognition of the forms OR, R and R3 and to the republica- 
tion of Beck’s figures. ; 
J. F. Kemp, in his Notes on the Minerals. Occurring near Port Henry: 
(1890) mentions some calcite crystals showing the forms R, 4R, ?R% and 
iiR#, the two latter in oscillatory combination. His accompanying figure 
is republished in the sixth edition of Dana’s System of Mineralogy. 
Penfield and Ford in 1900 described the calcite crystals from Union 
Springs, Cayuga co. and noted. several rare forms in addition to a rare 
twinning habit. 
*Irby, J.R.McD. Inaug. Diss. Bonn. 1878. 
