116 
GEOLOGY 
In the report of the fourth district, then under the charge of Hall, the following series is found, 
page 294 etc. , 
Red marl and Sandstone. Calcareous shale. 
Argillaceous and Calcareous shales of the Geodiferous and BUuminous limeslone. 
Genesee and Niagara rivers. Gypseous marl and slates. 
Argillaceous iron ore. Carboniferous or Mountain limestone. 
which only reproduces in part the series of Conrad published the year before for the third district. 
The THIRD ANNUAL REPORT is dated Albany Febr. 23'', 1839, and in the Paleontological Department, 
by T. A. Conrad, is the first complete tabular view of the strata of the State of New York, page 62 
and 63. I copy it here verbatim. 
TABLE OF FORMATIONS, SHOWING THE ORDER OF SUPERPOSITION, AND SOME CHARACTERISTIC 
FOSSILS OF THE TRANSITION STRATA. 
I ' Euomphalus catillus ; Delthyris trigonalis, D. cuspidatus\ 
Producta scotica , P. sulcata , P. scabricula , P. hemi- 
spherica-, Goniatites mmuta, G. flenslowi; Calamopora 
polijmorpha; Amplexus coralloides. 
ROCKS OF NEW T'ORK. 
Old Red Sandsto.xe Group , (Murchison.) 
i Old Red Sandstone 1 
' Olive Sandstone , (organic remains unde- 
j termined , except a few land plants , 
I very rare. 
Dipleura Dekayi; Cryphwus Boothii; Calymene Rowi; 
Pterinea fasciculata , P. concentrica ; Posidonia lirata ; 
Delthyris distans\ (Sow.) Lima macroptera; Cyrto- 
ceras maximum. 
1 Black slate, Posidonia. 
Medial Sildrian Strata. 
. Gray Brachiopodous sandstone 
[ Helderberg sandstones, 
) Helderberg limestones , 
1 Second Pentamcrus limestone, 
I Gypseous shales, 
y I Rochester shales, 
1 Pentamerus limestone 
5. Green slate, lenticular iron ore, etc. . . . 
4. Niagara sandstone, (red,) 
Atrypa elongata; Delthyris arenosa. 
Fucoides cauda-galli. 
-isaphus micrurus , A. selenurus; Calymene bufo; Cry- 
phwus calliteles ; Calymene anchiops ; Atrypa prisca , 
.4. aspera, A. Wilsoni ; Pileopsis tubifer\ Strophomena 
rugosa, S. tuberulifera ; Atrypa concentrica-, Calamo- 
pora fibrosa ; Cyathophyllum ceratites , C. helianthoides. 
Pentamerus Knightii ; Euomphalus profundus. 
Eurypterus remipes. 
Asaphus caudatus; Platynotus Boltoni; Trimerus del- 
phinocephalus ; Orthis elegans ; Strophomena elliptica ; 
Delthyris lineatus ; Caryocrinus loricatus , C. ornatus. 
Pentamerus elongatus , (P. oblongus ?) 
Undetermined. 
Fucoides Ilarlani ; Dictuolites Beckii; Lingula cuneata. 
