418 LILY HUIE. 
GLAND-CELLS OF THE THIRD LAYER. 
The Resting State, seen in Unfed Leaves used as 
Controls. ‘Fig: 254, Nueleus seen in Pomer 
tudinal section; 258, the same in transverse 
section. 
I have only figured the nuclei of this layer, because the cells 
are very large, and the cytoplasm is too scanty to show any 
characteristic changes, except those of the staining reaction. 
In tentacles fixed in absolute alcohol, however, a dense plasm 
is seen filling the cell, and resembling mucus. 
The Cell Wall.—The outer wall of a longitudinal section 
stains pale blue. The inner wall next the tracheids stains 
deep blue. The cuticularised parts do not stain at all. 
The Cytoplasm is merely a thin peripheral layer, slightly 
granular, staining pure blue. The layer lining the wall next 
the tracheids generally shrinks away from it to the centre of 
the cell, which it traverses like a cord, attached at its ends to 
the point in the transverse wall between the cuticularised por- 
tion and the lignified projection. As this is the case in all the 
cells of the layer, a cord, or rather a lamella, appears to stretch 
continuously from cell to cell. 
The Nucleus is spindle-shaped. Its position is peripheral. 
It lies either in the layer of cytoplasm lining the external wall, 
or in that which lines the internal wall. Should the cyto- 
plasm shrink to the centre of the cell, the nucleus is taken 
with it. Its long axis corresponds to the long axis of the cell. 
The Nuclear Chromosomes are minute granules which gene- 
rally appear to be double. They stain deep blue. They are 
peripherally placed, and their arrangement frequently suggests 
that they are disposed like beads upon invisible threads, which 
describe a wide-meshed reticulum. 
The Nuclear Plasm is granular; and the granules appear 
more or less distinctly to be arranged in chains, or to form a 
kind of open network with the spaces occupied by a homo- 
geneous substance. Both granules and spaces stain blue, 
without any reddish or purple tinge, thus differing from the 
