JEFFREY: NEW PREPINUS. 335 
resin canals, which also appear in the smaller specimen. Outside 
the fibrovascular cylinder lies the cortex, in which are likewise 
present resin canals. In neither of the two specimens examined, 
could any evidence be found of the presence of sclerotic nests such as 
exist in the jiith of P. statenensis. Fig. 10 (PI. 33) likewise shows the 
jtresence of the bases of the ensheathing bracts, which surrovmd the 
axial portion of the short-shoot. It is clear from the figure that these, 
unlike the fascicular leaves, are flattened even as they take their origin 
from the surface of the short-shoot. On their lower or outer surface 
they are coated with a thick coat of sclerotic cells. They contain but 
a single leaf-trace and possess two resin canals, one on each side of the 
trace, communicating with the cortical canals of the short-shoot. 
Fig. 8 (PI. 33) shows the base of one of the fascicular leaves, found 
attached to the upper portion of the smaller short-shoot. It is at once 
distinguishable from the bracts, which take their origin lower down 
by the prominent ridge which marks its outer surface. The leaf-trace 
is single as in the case of the sheathing bracts described above and is 
likewise flanked on either side by a resin canal. In Fig. 8 (PI. 33) the 
junction of the foliar resin canal with that of the cortex of the short- 
shoot can clearly be made out on the right, whilst on the left the union 
of the two resin ducts has not yet taken place. The tyloses are not 
as w^ell developed in the bases of the fascicular leaves as they are in the 
sheathing bracts. This is, however, not surprising as even in the 
woody portion of the short-shoot the resin ducts are less clearly oc- 
cluded by tyloses in the upper portion. The continuity between the 
resin canals of the fascicular leaves and those of the cortex of the short- 
shoots is a feature of great importance in connection with the affinity 
of the present species with Prepinus statenensis. As has been pointed 
out by Strasburger (Hist. Beitrage, vol. 3, 1891) the resin canals of 
the leaves of the living species of Pinus end blindly in the lower portion 
of the leaf and do not communicate with the resiniferous tissues of the 
axis. The same relations have been shown to occur in the case of the 
resin canals of the leaves of true pines from the Lower Cretaceous 
(HoUick and Jeffrey, "Studies of Cretaceous Coniferous Remains 
from Kreischerville, New York," Mem. N. Y. Bot. Garden, no. 3, 
pi. 22, figs. 1, 2, and 4, 1909). 
In transverse sections near the tip of the smaller short-shoot as many 
as seven leaf-bases of the fascicular type, in contrast to the sheathing 
bracts, were found attached to the periphery. In the highest obtain- 
