*'ROM THE SECONDARY ROCKS OF BRITAIN. 19 
scale of the Araucarian cone corresponds to the membranous bract 
which subtends the scale of the pine cone, supposes this to be the 
representative of the true scale in the cone of £bius. But whether a 
seed appendage, the folded base of the leaf, or the representative of 
the scale in the pine cone, the matter of importance to us is that it is 
so largely developed in the Australian and fossil species. The speci- 
men of A. spharocarpa is so imperfectly preserved that it is difficult to 
say whether the scales were winged, but there seems to me to be 
indication of short wings. It is, however, evident that the fossils 
belong to the Eutacta section of the genus, and among the species the 
cones of A. exceha approach most nearly to them in size and form, and 
in the structure of the scales. 
The affinities of these cones to recent Australian species are the 
more interesting because Owen, Phillips, and Lyell have shown that 
the animals belonging to the same epoch have their nearest allies in 
that continent. 
Thuyites expansm, Phillips. Two cones of this species are figured 
by Buchanan in the new edition of Murchison's ' Geology of Chel- 
tenham,' 1845, tab. i. fig. 6a and 6b. 
From the Stonesfield Slate. 
Sequoiites Woodwardii, Car., Geol. Mag, iii. 544. Cone subglobose. 
Leaves of two kinds, the one subopposite, very short, acute, with a 
long decurrent base; the other squainose, linear, acuminate, subfalcate, 
with a broad nerve below. • 
This is a very interesting plant, and undoubtedly a fossil species of 
the genus Sequoia. I have, however, employed the name of ^equoiites 
m accordance with the almost universal practice of botanists, — a prac- 
tice of great value in enabling one at once to distinguish the recent 
from the fossil species of a genus. The genus Sequoia is at present 
represented by two Californian species, the monster trees of that 
country known in our lawns and parks as Wellingtonias. Five other 
species have been reported from Tertiary strata, the oldest one being, 
as I believe, S Couteice, from Bovey Tracey. Debey cannot separate 
Geinitzia from Sequoia, and Heer, accepting this determination, sup- 
poses that Sequoia probably begins in the Cretaceous formation. We 
have here a genuine Cretaceous species from the Upper Greensand. 
_ The leaves are of two kinds, the oue very short and acute, scarcely 
leaving the branch from which they rise, but with very long decurrent 
c 
2 
