CAL CITES OF NEW YORK TO5 
colorless, transparent or semitransparent and average 15 millimeters in 
vertical length; they are attached and in no instance was a doubly termi- 
nated individual observed. 
The crystals are scalenohedral in habit, the dominant form being the 
positive scalenohedron K: (2131). The combination shown in figure 5 is 
found on two of the three specimens and characterizes the calcite which 
lines the walls of pockets or vugs. In this combination the fundamental 
rhombohedron p. (1011) is developed to a considerable habit, and the 
combination is marked by the absence of the modifying forms common to 
that shown in figure 6. 
The combination shown in figure 6 is more scalenohedral than the 
preceding habit and shows a notable development of the positive rhombo- 
hedron m. (4041) as well as in some instances of the prism a(1120). The 
acute polar edges of K: are beveled by extremely narrow planes of the 
negative scalenohedron %: (2.9.11.5). Small, roughened planes of the 
second order pyramids ; (8.8.16.3) were present on all the crystals measured, 
the polar edges of this latter form being beveled in the negative sextant by 
a negative scalenohedron. This latter form could not be well established 
owing to the imperfect character of the reflections but from two fairly con- 
sistent measurements of the edge the indexes (4.10.14.3) are suggested for 
it as the nearest hypothetic scalenohedron of rational intercepts; the form 
must be considered as doubtful. 
The forms present are a(1120), 7 (8.8.16.3), p.(1011), m. (4041), 
Ke (GB) eiaGl Sse (CAs 
UNION SPRINGS, CAYUGA CO. 
Plates 18-20 
The calcite from this locality was first described by Penfield and 
Ford' in 1900 from material furnished by Dr John M. Clarke, then State 
Paleontologist, and was further studied in a subsequent note by the 
writer.’ 
*Pentields sl, S& Ford, W. E. Am. Jour: Sci. 1900: 10:237—41. 
2 Winttloc ros No Yo state Mus: Bul 98; 1905. p. 10: 
