XXXll 
TABLE OF CONTENTS. 
Page 
Various local descriptions and extent. 403 
Limestone beds supposed to belong to this group.. . 405 
Brecciated and conglomerate limestone. Various localities, with descriptions 
and sections. 406, 407, 408 
(5) . Calciferous group. Synonims. 410 
G eneral description. 410 
Range of main mass and various patches. 410 
Barnegate limestone; its range and description. 410 
Economical application. 411 
Statistics of the lime manufacture. 411 
Description of, in Orange county. 412 
Ulster county. 414 
Calciferous sandstone ... 414 
Extent and localities. 414 
Oolitic and concretionary limestone, etc. 415 
Slaty limestone, fucoidal and argillaceous, in Saratoga and Orange counties.. 417 
(6) . Potsdam sandstone. Its general characters. 418 
Range, extent, thickness, fossil contents. 418 
Ripple marks, metamorphism, dip. 418 
Localities for examination. 418 
Sections of the strata. Positions with regard to the primary rocks. 419 
CHAPTER VII. 
TACONIC SYSTEM. 422 
General remarks. 422 
Of what composed. 422 
Range and extent. 422 
Strike and dip, and reversed position. 422 
In what situation they are best characterized. 422 
Order of superposition. 422 
Localities where this may be examined... 423 
Limestones of this system, and modifications. 423 
Slate of this system, and modifications. 423 
Localities where the Taconic rocks are well exposed to observation, and easy of 
access. 423 
Local details of the Taconic rocks. 424 
Washington county.«... 424 
Near Whitehall and Hampton. 424 
Near Putnam; metamorphic Potsdam sandstone. 424 
Range of rocks in Granville, Hebron, Salem and White-creek. 424 
Positions in limestones become metamorphic. 425 
