312 ROYAL SOCIETY OF CANADA 
In discussing the regional distribution of the various collections, 
they may be divided conveniently for geological purposes, into two 
groups. Within the first are embraced Nos. 250, 1001, 1007, and 271. 
Specimens were taken from locality 250 on two separate occasions, 1.¢., in 
1903, and again in 1905. In 1905 also, collections were made from 
localities 1001 and 1007, both of which are on the Kettle river and near 
to No. 250; while locality 271 of the 1903 collection was on an affluent 
of the Kettle river. The proximity of these various collections enables 
us to consider them essentially identical, and the plants derived from 
them will be treated as of one flora. 
In this connection it will be worth while to recall previous deter- 
minations of plants from the Red Deer river, from the Similkameen 
Valley, from Quilchena and from Coutlee. All of these floras will 
have to be compared with one another and with that of the Skagit 
river, in consequence of which it should be kept in mind that, with 
the exception of the first, all of these localities fall within the limits 
of the Kamloops sheet, within which area Dr. George Dawson has shown 
that the Tertiary formation shows “two well marked horizons of strati- 
fied deposits,” and with respect to the causes giving rise to them, “it 
is probable that the Similkameen beds may correspond in time with 
one or other of these horizons, and their appearance and mode of occur- 
rence accords best with the hypothesis that of these two they represent 
the lower or Coldwater horizon, but for the present this correlation 
stands merely as a probably conjecture.” (16: p. 75B.) 
An enumeration of the various types of plants found in the local- 
ities indicated by the above numbers, gives the following :— 
Taxodium distichuma toe ASE UE sea OO Leafy branch. 
Cupressoxylon macrocarpoides ......... Wood. 
Picea tcolumbiemsis (chi Feel. Seles Wood. 
Cyperacites haydemiicntcnig).). EEE wat 
Oy peraertes, Map een ELU ere 
Phragmites, Sp!) MARNE CREER ere 
Betula spi Ws Ge) LRU Mis Grateeas eater tare Fruit. 
Uilmusiprotoracemosa| Ut . techies. (chai: Wood. 
Ulmus protoamericana ................ Wood. 
Ulmus columbiana ......... fe Lite Wood. 
Uinius ep EME Oe eek ARE HERO CERN Leaf. 
Potamoreton, isp... eee sees eer Fruit and leaves. 
Pern stipes; PLE PEAU VERRE AREA 
Hxogenous* wood A0 512 wttele IEEE NAN 
Undeterminable fragments of leaves..... 
Pinus columbranas 2 Se eee sea omneters Wood. 
