298 Screntifie Intelligence. 
Mountains, yet some of aks oghnes are identical, and others closely 
correspondent, as follow 
Wahsatch. Suessonien. 
Ambloctonus. i 
Hyracotherium. Hyracotherium. 
Corypho ryph 
pert bows Gastorn 
Lepidost Lepidosteus 
As a point of difference between the beds, may be mentioned the 
absence of the Teniodonta mins the Suessonian, a sub-order not 
yet known out of North Am 
The Wahsatch sc/isisieaien Fadliaee the Green River Beds of 
Hayden, a name which I formerly used for the entire series. It, 
however, applies properly to the fish shales of Green River, con- 
taining ‘Asineops, Clupea, Osteoglossum, etc., which are probably 
local in their character. : 
The Bridger formation will then represent on the American 
continent, , more nearly than any other, the Middle Eocene or Pa- 
risien of Cuvier, Brongniart, and Renevier. 
The teeth of sharks described in the reports quoted are of uncer- 
tain origin. They are associated with oyster shells, and both have 
the appearance of having been transported ; nev ertheless, some of 
the mammalian teeth found associated with them have a similarly 
rolled appearance. It therefore remains uncertain whether the 
a 
which ye its hor Similar age in one instance the sam 
: ecies of sharks were fund in both formations, the division of 
e Cretaceous being No. 3 and 4 of Hayden. 
n conclusion, the Lomein of the North American Eocene 
may be represented as follow 
Formation. Equivalent. Locality. cee “a 
Brid. Jorm. i ; S. W. Wyoming. Tillodontia. 
ridger Form Middle Eocene yoming. Dinocerata. 
carats 
i Teeniodon 
Wahsatch Form. Lower Eocene. | etnies youlaie Ler 
2. Note cl se the Geological position of the Serpentine Live 
stone of Northern New York, — an inquiry regarding ¢ "4 
tions of this Penekeans to the Eozoon Limestones of Uanaa4, 
Prof. James Hatt.—(The fo Slane is an abstract of this Be veal 
before the American Association at Buffa ng er gt 
reddish tint. The formations suai this space were sl 
ee Primary, and more recently Laurentian. The v 
The same of things exists in ue eaosies Daeg! as the th of es 
Vaud, Switzerland. Mingled with the mammalian o 
Harpe remarks that ticks ¢ appearance ais a warrant the bli 
that they have been transported, or are not indigenous to the Eoce 
