CALCITES OF NEW YORK 27 
THEORETICAL CONCLUSIONS 
An examination of the geologic map of New York with relation to the 
foregoing localities will show that these occurrences are geologically sus- 
ceptible of division into the following groups: 
I Occurrences in the crystalline limestones of the Grenville series in 
Jefferson, Lewis and St Lawrence counties. These occurrences are: Rossie, 
Antwerp, Somerville and Sterlingbush. 
II Occurrences in veins traversing Adirondack gneiss and in most 
instances associated with ore bodies of magnetite. These occurrences are: 
Lyon Mountain, Arnold hill, Mineville and Chilson lake. 
III Occurrences in the Trenton limestone of the Champlain-Hudson 
valley. These occurrences are: Smith’s Basin, Glens Falls and Saratoga. 
IV Occurrences in locally disturbed Upper Siluric limestone forma- 
tions of central New York. These occurrences are: Fayetteville and Union 
Springs. 
V Occurrences in the Upper Siluric limestones of the Mohawk-Hudson 
valley. These occurrences are: Howes Cave, South Bethlehem, New Balti- 
more, Catskill, Hudson and Rondout. 
The following synoptic table gives the distribution of the forms for the 
20 occurrences hitherto discussed. 
