e appearance of this florula is quite m ay be the 
result of Say a ar seca er ces. Po lars and Biietoniroede 
live together in the of rivers, and therefore I may mistake 
Marshall’s. In me case it is certainly Tertiary and has no plants 
of an older formatio 
~ In Marshall’s aera eds) we find only ten species of fossil Ue 
| tical with Mi 
nite of Mississippi, ‘one Cornus, one Jugl and Cinnamo- 
mum, all related to Miocene species nd the ‘last one _also closely 
Tam much steams to find my views so well a reste RR yours 
The ort ae ae met from the strata of Golden City, Raton 
Pass and fion, are too scanty to permit considerations 
in regard to the oy positions of the strata which have 
has yet been described from Tertiary 
hese broken remains of a conifer of uncertain ' 
— the shale of mee P chemia, which is a Ter- 
tiary plant, and a leaf of Echitoniwm, and one of Cinnamomum 
identical with specimens found at Marshall’s. 
The remarks as given above, were sent to me by Mr. Les- 
quereux, in the form of a letter, and all the important facts 
contained in it are given, o mitting unimportant details. I re- 
ee these results as extremely interesting, throwing much clear 
ight on many obscure points in western geology. That the 
Marshall beds are lower Tertiary, may be inferred not only 
from the organic remains, but also from the entire conform- ~ 
ity, so far as can thee n, of Cretaceous and lignite beds. It 
will be difficult a Ww i r 
ne and Msoa in the lignite formation in an | 
the West . oe 
