172 
HELDEREERG DIVISION 
the individual strata are indistinct, but the stratification is sufficiently manifest when 
viewed as a whole, and as it appears in a cliff 1 . Fig. 29, at the head of this section, re¬ 
presents the usual appearances of the rock, where its horizontal strata are exposed. It is 
a view of the rock at New-Scotland, as it appears in the creek a few rods below the mill. 
In some localities this rock is recognized with difficulty : thus, at Leeds in Greene 
county, in the disturbed belt, it is unlike the same mass at New-Scotland or at Cherry- 
valley. At the former place it puts on a columnar appearance, especially in the gorge 
below the village; and as the peculiar fossil is not readily distinguished, the geologist will 
inquire with some concern what the rock is, or what it is like ? He will at first suspect that 
he has fallen upon a disturbed mass belonging to the Hudson-river series ; and he will not 
be able to satisfy himself that it is really the Cauda-galli grit, until he finds it succeeded 
below by the Oriskany sandstone and Dclthyris shaly limestone, and above by the Scho¬ 
harie layers and a poor variety of the Onondaga limestone. The columnar structure is 
well represented in the mass by fig. 30, which represents the strata in the gorge at Leeds, 
Fig. SO. 
where the Catskill creek cuts through this rock, and exposes it upon its southwest side in 
a bold cliff 1 fifty or sixty feet high. It is difficult to account for this singular instance of 
