822 DEPARTMENT OF THE INTERIOR 



2 GEORGE V., A. 1912 



and comparison, the conclusion has been reached that they represent the larger 

 veins of exogenous leaves, possibly of the type of Platanus, which have become 

 skeletonized and broken up, thus leaving the peculiar fragments observed. This 

 conclusion will satisfactorily meet all requirements. 



Summary and General Conclusion. 



In summarizing the foregoing results it is hoped to answer more or less 

 completely, several questions which have been raised as to the age of the deposits 

 in which the fossils occur. The precise nature of these problems may be best 

 understood by quoting from the original letters of transmittal and information, 

 to the effect that ' Nos. 1428, 1430, 1433 and 1436 were collected from a large 

 area of what has always been known as Lower Cretaceous, occurring at the 

 Boundary (49th Parallel) Line between the Pasayten and Skagit rivers. There 

 seems to be at least 28,000 feet of this series altogether, and it appears to 

 correlate with the Shasta-Chico Series. I am particularly anxious to know 

 whether 1428 is older than 1430 in its facies, and still more to know whether 

 both are really Cretaceous.' And later, in answer to questions as to the relative 

 positions of 1428—1436 of the 1905 collection, and 471 of the 1903 collection, 

 the reply was that ' The locality of No. 471 is about one hundred and twenty 

 miles east of that of 1428 — 1436; the former near to Rossland, the latter on the 

 summit of the Cascade mountains. The age of the Possland volcanics and of 

 the ash beds or sediments in which these obscure 471 specimens occur, is not at 

 all understood, and I was hoping for some indication as to whether these rocks 

 are even later than Palaeozoic. The two occurrences are completely separate in 

 geological and geographical relations, but there is no good reason why both 

 should not be Cretaceous.' 



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 650 on two separate occasions, i.e.; in 1902, 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 determinations 

 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 [Pasayten river] ; in consequence 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 stratified 

 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 



