warD.] JURASSIC FLORA OF OREGON. 878 
however, nothing in the nature of these plants to compel one to regard them as Lower 
Cretaceous. They may very well be of the age of the Oroville plants. They are 
pretty old looking. Why may not Todd’s plant bed be the same as that on Olalla 
Creek (Diller’s No. 2 bed), with the plants like those of Oroville, and both Jurassic? 
At a little later date (January 26) he reported more fully as follows: 
I have examined all the collections from the horizon (Olalla Creek), apparently 
above the Aucella beds of Buck Peak, and find that they indicate a flora of essen- 
tially the same age, and that it is apparently Jurassic, of the same age with that of 
Oroville. Mr. Storrs has made a pretty good collection from Todd’s old locality. 
Unfortunately, nearly all of the fossils from this place are ferns, and ferns are not the 
best kind of fossils to determine geological age. The plants from this locality seem to 
belong to a flora of essentially the same age as that from the Olalla Creek, and to be 
Jurassic and not Cretaceous. Many of them, it is true, are different from those of 
Olalla Creek, but a number are the same, and my impression, from this preliminary 
examination, decidedly is that the floras of the Todd locality and Olalla Creek are 
not essentially different in age from that of Oroville. Mr. Storrs has got some fine 
plants from Olalla Creek. Among them are fine Ginkgos, probably of more than 
one species, with broad lobes, of the type of the Jurassic Ginkgos, G. digitata and G. 
Huttoni.” 
During the season of 1898 additional collections from the Olalla 
Creek beds were made by Mr. Will Q. Brown, of Riddles, Oregon, 
and Mr. Claude Rice, which they offered to send to Washington for 
determination, but, in view of the amount of material already in hand 
and the still existing confusion as to the stratigraphy, no effort was 
made to secure them. Mr. Brown, however, collected and turned 
over to Professor Diller a few plant remains from a railroad cut half 
a mile north of Nichols station, just south of the whistling post for 
that station. The railroad here follows the left bank of Cow Creek, 
and the locality is close to that stream. Nichols station is 7 miles 
exactly due south of the plant beds on Olalla Creek, and also due 
south of the locality on Bucks Peak. The plants from this locality 
closely resemble those obtained at the more northern points, and hence 
had an especial interest. They were sent to Professor Fontaine, and, 
in a letter by him to Professor Diller, dated April 12, 1899, he says: 
The locality, ‘‘Railroad cut near whistling post, one-half mile north of Nichols, 
Douglas County, Oregon,” is a very promising one and seems to contain a great 
variety of plants. The specimens sent are quite fragmentary, but they indicate over 
20 different species, which, I think, show that the strata are of Horsetown age. This 
locality should have additional collections made from it. 
Commenting on this report, Professor Diller wrote me, on April 14, 
as follows : 
These fossils Mr. Brown expected to be Jurassic. It seems much more probable 
that they are Cretaceous. If the ones from the Olalla region are the same as those 
at Oroville, this locality assumes very great importance in furnishing an opportunity 
to study the flora which will connect the Upper Jurassic and the Cretaceous. Were 
it not for the fossil plants I should not hesitate to put all of the rocks in the Creta- 
ceous. If they are not Cretaceous, however, it is important that the line should be 
drawn between them and their relation determined, for it 1s between the upper 
