GEOLOGY. 



[All the specimens enumerated under this division of the Catalogue are in the 

 Cabinet, unless specially cited as missing.'] 



I. CRYSTALLINE AND METAMORPHIC ROCKS 

 OF THE ANTE-SILURIAN PERIOD. 



i 



9 



10 

 11 

 12 

 13 

 14 

 15 

 16 



Names of Specimens. 



Graphic granite. 



FIRST TABLE CASE* 

 Localities. 



Staten island. 



Westchester county. 



Granite. 



Graphic granite. 



Granite. 



Granite (gneissoid). 



Granite (fine-grained). 



Granite (gneissoid). 



Granite. 



Granite (sienitic). 



Granite. 



Granite (red). 



Granite (felspathic and decomposing). 



Kaolin (from decomposing granite). 



Granite (red). Head of feeder, Boonville, Lewis. 



Granite (sienitic), Highlands. 



Gneiss. Near Peekskill, Westchester. 



Stony point, Rockland county. 

 Dean's bridge, Westchester co. 



Near Clove mine, Monroe, Orange co. 

 Buttermilk falls, Cornwal, Orange. 



East of Boonville, Lewis, 

 Near Boonville, Lewis. 



