88 On Fossil Plants from Washington Territory. 
The first was given me by the collection of tertiary fossil plants 
from Iceland in which I found a Liriodendron (leaves and fruit) 
very like Z. tulipifera, L., with six species of Pines, of which one 
much resembles Adzes alba. With this, there are leaves of Alnus, 
Betula, Salix, Araucaria, Acer, Sparganium, Equisetum, &c., an 
in truth, species which agree perfectly with those of the tertiary 
q 
agree perfectly with what we find in Europe. This led me to 
believe that the plants of Nebraska belong to the tertiary and 
: i 
is very like Populus Leuce, Ung., of the lower Miocene, and the 
Ettinghausiana seems hardly rightly determined. Besides it is a 
mus badly founded, and which has as yet no value. All the 
owe to the kindness of Dr. John Evans the privilege of still 
having his specimens in my possession; I was therefore enabled 
to again examine the only specimen of the leaf which according 
to Prof. Heer is referable to Oreodaphne Heerii, Gaud. Though 
the specimen is one of the best preserved of the collection, there 
is no trace of the mentioned pimples or depressions at the axils 
of the basilar secondary nerves as -marked in the figure of M. 
Ganudin’s memoir. One leaf agrees in its general outline and by 
its primary and secondary nervation with an Oreodaphne. But 
the secondary intermediate nerves are large, deeply marked, and 
perpendicular to the primary one; and the tertiary nervules are 
also mostly perpendicular to the secondary ones, well marked 
and mostly percurrent. This last character especially would 
separate our leaf from the genus Oreodaphne and put it rather 
with the oaks.—About Sahx Islandica which I referred with 
rof. Heer had not seen, when he wrote this, the paper by Mesers. M 
Hayden in our last volume (p. 219), in which it is shown that the beds con 
tra ized b 
other fossils of the Dr. pegs ype 
from beneath the Cretaceous of New Jersey (collected by Prof, G. H. Cook), and 
<< o ees cts leaves are pair: Poreor Ie 
