5
Déboulé mountains, and by dykes which traverse both the mountains and

the valleys (See Plate IIIB). The intrusions apparently cut through the
sediments without causing any appreciable deflexion of the bedding.

PALZONTOLOGY.

A collection of fossils was made from a marine horizon, in the Hazelton
series, which passes through the American Boy property and is exposed by
the underground workings there. This collection was sent to Dr. T. W.
Stanton, of the United States Geological Survey, who reported as follows:

“The two lots of fossils from near Hazelton, British Columbia, contain
only a few recognizable forms... . . The most abundant form in both
lots is a large smooth Pecten which is very closely related to an unnamed
Pecten in the Aucella-bearing upper Jurassic of southwest Alaska near
Herendeen bay. In one lot there is also a. single specimen doubtfully
referred to Aucella, some poorly preserved specimens that seem to be
Ostrea, and one or two other undetermined pelecypods. In the other lot,
in addition to the Pecten and an Ostrea, represented by several imperfect
specimens, there is one shell which appears to belong to the genus Pedalion,
more commonly called Perna. While the fauna lacks strictly diagnostic
forms I believe it to be most probably upper Jurassic.”

A great many of the sedimentary tuffs of the Hazelton series, in this
district, contain fossil flora; some of the beds contain an abundance of the
fossils and collections were made from several horizons in the Bulkley
canyon between the low and high level bridges and at three places on the
road to Ninemile mountain. W. J. Wilson examined these collections and
summed up his determinations as follows:

“In this collection there are a large number of specimens but only a
few identifiable species. The most numerous and best preserved are those
I have named Cladophlebis virginiensis Fontaine, Ginkgo digitata Brongn,
and Czekanowskia.

“There are some good fronds of Cladophlebis which seem to agree
specifically with Cladophlebis virginiensis, while others show considerable
variation, and might be easily placed in some other of the many species
into which the genus has been divided. Unfortunately the venation in
most specimens is rather indistinct.

“Those named Ginkgo digitata may very well belong to the variety
with much divided, narrow segments, and similar specimens are so placed
by Knowlton and Seward. There seems little doubt that they belong to
this species.

“At nearly all the localities there are specimens more or less covered
with fine, narrow, needle-like leaves, either in tufts or single. These
probably belong to the genus Czekanowskia and may be C. murrayana
(Linley and Hutton) (=C. rigida Heer). There are also a number of tips
of a delicate fern which may be a Thyrsopteris. This name Berry has
changed to Onychiopsis. What may be a fragment of a stem of Equtseties
is on 392-8 and a probable fruit is on 3938-11. On 396-1 there is a Ginkgo-
like form with narrow segments, which may be placed in the genus Batera.
There are good specimens of a cycad on one slab, which seems to agree
best with Dioonites borealis Dawson; this specimen was an erratic picked
up on the trail but supposed to be not far removed from the place of
deposition.