48 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 
may be seen a lighter stripe, mainly composed of the abundant 
transfusion tissue, which surrounds the bundles on all sides and at 
the same time connects them with one another. Figure 4, Pl. 15, 
shows the upper part of a transverse section, X 80, through nearly 
the same region as fig. 5. Above may be seen the central ovular 
bundle which passes into the median ovule. This and its two lateral 
companions appear to bend very sharply upwards from the complex 
of bundles occupying the horizontal middle of the ovuliferous scale 
below the attachment of the ovules. Below may be made out one 
of the lower series of bundles which lies immediately above a resin 
canal. Figure 6, Pl. 15, is a transverse section, X 180, through 
one of the inferior bundles of the cone scale, showing it surrounded 
by a thick cordon of transfusion tissue on all sides. The tracheids 
of the bundle may be distinguished by their small size, their central 
position and the dark hue of their walls. The lighter colored cells 
which surround the bundle are transfusion elements with small bor- 
dered pits, very similar to those which surround the fibrovascular 
bundles of the needles in living pines. Similar cordons of transfu- 
sion tissue have been described by Seward and Ford in the case of 
the bundles of the cone scales of species of draucaria,** and have 
been likewise observed by one of us in species of 4gathis. It is of 
interest to note in this connection that this probably ancestral type of 
relation of the transfusion tissues to the foliar trace is best marked 
in the vegetative leaves of the Abietineae and in the cone scales of 
the Araucarineae. It may be stated in general that the cone scales 
of the Araucarineae, living and extinct, can often be distinguished 
in an Isolated condition from those of the Cupressineae and Sequoi- 
ineae by the cordon of transfusion tissue which surrounds the fibro- 
vascular bundles on all sides, since in the last two mentioned tribes the 
transfusion tissue had characteristically the same disposition as is 
found in their foliage leaves, viz., on the flanks of the bundles only. 
Figure 1, Pl. 14, represents a longitudinal section, X 30, of a 
cone scale of Protodammara, a little to one side of the median longi- 
tudinal line. To the left is the spinous process, which is a usual 
feature of the cone scales of this genus, and which represents the end 
of the sterile bract, on the hypothesis that the araucarian ovuliferous 
scale is made up of the fusion of a pair of superposed scales equiva- 
lent to those found in the female cone of the Abietineae. The bulg- 
“ Philos. Trans. Roy. Soc. London B 198: 363. f. 27. 1906. 
