OF NORTH AMERICA. 
117 
Lower Silirian Strata. 
I Salmon river sandstone, (olive,) . . . . 
O. \ 
( * Green slate 
I Gray crinoideal limestone, 
I Trenton limestone and slate 
Mohawk limestone 
Gray limestone with sparry veins, . . . 
Gray calcareous sandstone, 
Pterinea carinata, (Gold.) P. planulata, P. modiolaris; 
Cyrtolites ornatus. 
Agnostis pisiformis. 
Group of the Trenton limestone. 
Cryptolithus lesellalus ; Trianhrus ; Asaphus tuberculalus\ 
Calymene lilumenbachii-, Isotelus; Ceraurus\ Orthis 
testudinaria ; Strophomena alternata ; Pleurotomaria 
cirriformis ; Orthoceras striatum ; Trocholites ammo- 
nias', Columnaria sulcata', Trianisites', Fucoides den- 
tatus, (Graptolites.) 
Orthostoma communis. 
Fucoides demissus. 
Lingula acuminata. 
Cambrian System , (Sedgwick.) 
{ Olive sandstone and slate, Fucoides serra, (Brong.) 
Variegated sandstone , (Potsdam sandstone 
of Emmons,) Dictuolites radians. 
Primary. 
Gneiss, etc. 
* The position of this rock with Agnostis was determined by Mr. Vanuxem. 
In this report, Vanuxem employs for the first time the denominations, Oriskany Sandstone, p. 273; 
Seneca Limestone, page 275; Tully Limestone, page 278. Hall, in his report of tiie fourth district , em- 
ploys for the first time the denominations, Marcellas Shales, page 295; Ludlowville Shales and Moscow 
Shales, page 298; and Chemung Group, page 322. 
Finally, in the FOURTH ANNUAL REPORT, dated Albany Jan. 24"', 1840; Mather describes 
and names the Hudson Slate Group, page 256 etc. 
see, page 368 and following: 
Polsdam sandstone. 
Calciferous sandrock. 
Fucoidal layers. 
Mohawk limestone. 
Bird's eye limestone. 
Trenton limestone. 
Black slate or shale. 
Frankfort slate. 
Pulaski shales. 
Salmon river sandstone. 
Medina sandstone. 
Oneida conglomerate. 
Protean group. 
Onondaga salt group. 
Manlius water lime group. 
Pentamerus limestone. 
Dellhyris shaly limestone. 
Scutella limestone. 
and Vanuxem gives the following series of strata; 
Orlskany sandstone. 
Fucoides Cauda-Galli. 
Schoharie layers. 
Onondaga limestone. 
Corniferous limerock- 
Seneca limestone. 
Marcellus shales. 
Upper shales of Marcellus. 
Skaneateles shales. 
Hamilton group. 
Moscow shales. 
Tully limestone. 
Black shale. 
Sherburne flagstone. 
Ithaca group. 
Chemung group. 
.Montrose sandstone. 
