34 J. W. DAWSON ON CRETACEOUS AND TERTIARY FLORAS. 
II.—Similkameen River* :— 
The plants from this place are in a brownish shale, abounding in fragments of a large 
Equisetum, which I have described in the report cited under the name of Æ. Similkamense. 
With this are numerous leaves of Populus Arctica, Heer, and a few of P. latior ; and also 
species of Carpinus, Platanus, Nelumbium, Sapindus, Myrica, Betula, Paliurus, Vaccinium, 
Taxodium, Sequoia and Glyptostrobus, and a fragment of Thuja, not distinguishable from 
T. occidentalis. The species are different from those found at Quesnel, but like them 
apparently of Middle Tertiary age. 
Ill. —Reserve, North Thompson} :— 
The leaves from this place, in a matrix of grey arenaceous shale, are almost exclusively 
poplars, referable to Populus Arctica, P. Genetrix, Newberry, and another species. With 
these is a species of Rhus, allied to R. rosefolia of Lesquereux. 
When the plants from these localities shall have been fully collected and studied, it 
will be time to offer opinions as to the precise horizons of the Tertiary which they repre- 
sent. With so small collections from only a few localities, the local differences are likely, 
to some extent, to mask those depending on age. There can be no doubt, however, that 
they belong to the Tertiary period, and that they may be somewhat newer than the 
Laramie deposits of the plains. Like these they are associated with Lignite, and when this 
shall be worked we may expect that larger collections will be available. 

* G. M. Dawson, Report Geological Survey of Canada, 1877-8, p. 186 B. 
+ G. M. Dawson, 1. c. 
