10 



NEW-YORK STATE COLLECTION. 



II. METAMORPHIC ROCKS OF THE MOHAWK 



GROUP. 



Names. 



1 Quartz rock. 



2 Granular quartz. 



3 Compact quartz rock. 



4 Granular quartz. 



5 Ferruginous quartz. 



SECOND TABLE CASE. 

 Localities. 



Stanford, Dutchess. 

 Amenia, Dutchess. 

 Poughquaick, Dutchess. 

 Near Peekskill, Westchester. 

 Williamstown, Massachusetts, 

 6 & 7 Granular limestone. Dover plains, Westchester. 



8 Granular limestone. Williamstown, Massachusetts, 



9 & 10 Granular limestone. Hillsdale, Columbia. 

 11 - 13 Granular limestone. Amenia, Dutchess. 



14 Granular limestone (clouded). Northeast, Dutchess. 



15 Granular limestone (grey). Cortland, Westchester. 



16 Granular limestone (variegated). Peekskill, Westchester. 



17 Granular limestone (blue); Peekskill, Westchester. 



18 Granular limestone (striped). Near Peekskill, Westchester, 



19 Granular limestone (compact). Stormville, Dutchess. 



20 Talcy limestone. Stormville, Dutchess. 



21 Talco-slaty limestone. Stormville, Dutchess. 



Unionvale, Dutchess. 

 Ancram lead mine, Columbia. 

 Unionvale, Dutchess. 

 Bloomingrove, Orange. 

 Warwick, Orange. 

 Hoosick, Rensselaer. 

 Arthursburgh, Dutchess. 

 Lebanon springs, Columbia. 



22 & 23 Talcy limestone. 



24 Slaty limestone. 



25 Sparry limestone. 



26 Sparry limestone. 



27 Sparry limestone' 



28 - 30 Sparry limestone 



31 Slaty-talcy limestone 



32 Talco-slaty limestone 



