Pk 
waRD.] JURASSIC FLORA OF OREGON. 369 
map, flows westward along its base on the north side. On the south 
side two streams called Buck Creek and Doe Creek rise near its base, 
flow south, and join Cow Creek below Nichols station on the Southern 
‘Pacific Railroad. The mountain lies in latitude 43° 57’ N., longitude 
123° 30’ W., from Greenwich, and in township 30 S., range 7 W., of 
Willamette meridian. 
The locality at which Mr. Todd collected his specimens of fossil 
plants on Buck Mountain is about 300 feet below the summit on the 
east side, in a gulch which it has been agreed to call Todd Gulch. 
It lies north of Seven Spring Ridge, over which a trail rtins from the 
east, making the ascent of the mountain easy. Mr. Todd revisited the 
locality in 1886 and made additional collections. 
A single specimen from among Mr. Todd’s collections from this 
locality came into my hands in 1885 through Prof. W. H. Dall, who 
turned it over with some shells to Dr. T. W. Stanton, and the latter 
passed it on to me. It was a pretty little fern, and Professor Fontaine 
subsequently identified it with Dryopteris monocarpa (Aspidium mono- 
carpum Font., Proc. U.S. Nat. Mus., Vol. XV, 1892, p. 490, pl. Ixxxiii, 
figs. 4-6, 6a), from the Kootanie of Great Falls, Montana. The 
specimen is recorded as No. 972 in the locality or lot catalogue of 
the Division of Paleobotany of the United States Geological Survey. 
There are two other specimens now in my hands which I believe to 
have been collected at the same locality. They were received from 
Prof. J. S. Diller through Dr. T. W. Stanton, and were turned over 
to me by the former in 1893. They bear the locality number 568, and 
were recorded from data accompanying them as ‘‘from about sec. 16, 
T. 80 S., R. 7 W., Oregon Nickel mines, Riddles, Douglas County, 
Oregon, elevation about 2,000 feet.” This accords sufficiently closely 
with the Todd locality to admit of no serious doubt. The specimens 
are covered by the same fern and the rock is of precisely the same 
character, but unfortunately the original label did not state when or 
by whom they were collected. It is certain that they did not come 
from the Oregon Nickel mines, which lie in range 6, 5 miles east of 
Buck Mountain, and no fossil plants have ever been found in that 
vicinity. Professor Fontaine, while studying this material, observed 
the similarity in these specimens, and in a letter to me dated January 
26, 1898, he says: 
In studying the Oregon plants for description, I had regarded the fern visible on 
the two specimens credited to the Nickel mine, and numbered 568, as the same with 
that on the specimen numbered 972, and credited to Todd’s locality, i. e., Bucks 
Peak, 300 feet below its summit. On comparing these specimens again, after wash- 
ing them, to see if they were really the same ferns, I found on the Nickel mine 
specimens inconspicuous imprints of a conifer, Sphenolepidium Kurrianum, that I had 
not observed before. This led me to examine the supposed Todd specimen care- 
fully, to see if any conifers were shown on that. I had begun to suspect that the 
specimens all came from the same place, as the ferns are identical and the shale 
20 GEOL, PT 2 24 
