XXXIV 
TABLE OF CONTENTS. 
Page. 
2. Metamorphic rocks of the Highlands and of Saratoga and Washington counties .. 465 
General description of the limestones. 465 
(a) . Metamorphic white limestone of Warwick... 466 
Range and extent. 466 
General characters and mineral contents . . ... 466 
Local details. 466 
By Prof Rodgers. 468 
Conclusions. 476 
(b) . Metamorphic rocks of the Highlands of Orange and Rockland counties. 476 
Range and extent, general characters and mineral contents. 476 
Local details. 476 
(c) . Metamorphic rocks of the Highlands of Putnam county. 480 
General characters. 480 
Local details in east part of the county. 480 
Two ranges in western part of the county. 481 
Local details of these ranges. 481 
(d) . Metamorphic rocks of Washington county. 485 
General description and some details. 485 
(e) . Quartz rock of Saratoga county. 487 
(f) . Steatite rocks.. 487 
3. Ores of the Champlain division, Taconic system, and Metamorphic rocks . 488 
(1st). Limonite and hematite ore beds. 488 
Geological situation and limits. 488 
Local details. 488 
(2d), Lead, copper, silver, zinc, etc. ores. 498 
Local details of mines. 498 
4. Crystallographical examination of some minerals ... 509 
CHAPTER IX. 
PRIMARY ROCKS. 516 
General remarks. 516 
Range and extent and general remarks. 516 
Local details. Staten island. 517 
Long island. 517 
Island of New-York. 518 
(A). Primary rocks of New-York, Westchester, Dutchess and Putnam counties. 525 
1. Granite, general description and local details.. 525 
2. Sienite “ “ 528 
3. Gneiss “ “ 529 
4. Mica slate “ “ 531 
5. Augite rock “ “ 531 
