2 57 
Dischidia rafflesiana ( Wall.). 
or shelf, rising from the upper side of the lamina, just above 
the petiole (see Fig. i). On a young foliage-leaf J in. long 
they had already disappeared, only the cushion and scars 
marking where they had been seated. 
They were present and functional on the various young 
pitchers examined, up to a length of inches. 
In pitchers developed at Kew, and not yet mature, as shown 
by the rudimentary roots, absence of pigment, and other signs 
of youth, the glands had ceased to be functional, the epithelial 
cells being themselves cuticularized, and also severed from the 
inner tissue by a layer of cork. 
Laminar glands (Ig) are shown in Fig. 4, in the longitudinal 
section of the apex of a pitcher-bearing shoot, in Fig. 6, in 
a transverse section through a young node with scale-leaves, 
and in Fig. 8 from a longitudinal section of a pitcher | in. 
in length. 
The relation both of the vascular bundles and of the 
laticiferous tubes to the laminar glands was traced. It is usual 
for the vascular bundles entering the foliar organs to approach 
rather nearly to the cushion in which the glands are seated ; 
in many cases a branch runs off to the base of a gland, and is 
often continued up into the gland itself, but usually only in the 
form of a strand of elongated cells, not otherwise differentiated. 
In one case only was a spiral vessel found entering a gland 
(see Fig. 8). 
Branches from the laticiferous cells often approach the 
glands, and sometimes enter them. This also, however, is 
evidently an inconstant phenomenon. 
The third type of gland has not, so far as we know, been 
observed before. This is the apical gland, which is seated 
directly on the morphological apex of leaf and pitcher, just 
beyond the termination of the midrib. It is present on all the 
three kinds of leaves. The apical glands are developed 
extremely early ; thus they are present, and to all appearance 
functional, on the scale-leaves (/ 2 ) shown in transverse section 
in Fig. 5. Of course the section figured does not pass through 
these glands. 
