JESQtJIVALENT FORMATIONS. 289 
in original Tahle^ showing the equivalent Formation^ 
below the Coal Measures in the Rock Strata of Eng- 
land, and the States of New-York and Pennsylvania, 
Fonnations of England. 
Coal MEAstJREs.< 
tJp. Lud- 
low rock. 
m < 
Ayemestry 
liraestone. 
Low. Lud- 
low rock. 
Dudley and 
Wenlock 
limestone. 
Wenlock 
shale. 
If 
jv 
Flags. 
Sand- 
stones. 
Lime- 
(stones. 
^ si / Calcare- 
^ I ous ^ags. 
1 I <^ Sand- 
ra I stone and 
V schist. 
Cam- { Clay slate 
forian S. \ system. 
Gneiss. 
Formations of New-Yoirk. Formations of Pennsylvaniai 
Conglomerates. 
Sandstone of Cats- 
kill Mountains.* 
Pyritiferous slate. 
Shales of superior 
series. 
Gray sparry crinoi- 
deal limestone. 
Onondaga lime- 
stone. 
Red Sandstone. 
Sandstones and 
shales of Salmon Ri- 
ver, f 
Blue lim?estone and 
shales of Trenton 
Falls. 
Sparry limerock of 
the Mohawk. 
Bastard limestone. 
Sparry limerock—- 
(Eaton.) 
Calcareous sand- 
stone of Mdiawk 
Valley. 
Calciferous sand- 
rock of Eaton. 
Graywacke ahd 
slate of Hudson Riv- 
er. 
I Clay slate system. 
Gneiss. 
Granite. 
B B 
Anth.Coal meas- 
ures.(13) Conglom- 
erates & shales.(12} 
Red shale.(ll) 
( Sandstone and 
^ conglomerates.(iO) 
] Red sandstones 
I, and shales.(9) 
Olive-coloured 
slate.(8) 
Sandstone,(7) 
Blue limestone. 
Calcareous shale 
{ formation. (5) 
Sandstones and 
conglomerates of 
Kittatinny.(4) 
Slate of Kittatin* 
,ny Valley.(3) 
Limestone of Kit* 
tatinny Valley.(2) 
/ White An'd gnf 
^ Sandstonfes.(l) 
I Chy slate sy 
Gneiss. 
Granitb. 
