THE STRUCTURE OF THE PITCHER PLANT. 15 
its venation, and the position of both sets of glands. Minute 
dots, commencing at the bottom and extending to high-water 
mark,* represent the position and number of one series of 
Fig.2. glands, all on the inside of the 
Z pitcher. The under side of the 
lid also is covered with similar 
glands, having among them, how- 
ever, numerous stomata. 
Fig. 2 shows a camera lucida 
drawing (magnified eighty diam- 
f OU TV eters) of these glands, also ren- 
dnd iut piti so that their anatomy may be seen at óne 
view. They are depressed below the inner surface of the 
pitcher, and have, extending over nearly half the diameter 
of each, a projection of the epider- Fig. 3. 
mis like many little roofs, so that a 
stream of water poured in at the 
top would reach the bottom of the 
pitcher without touching a gland. 
The fine reticulation marking the 
surface of each, is caused by the 
ends of long columnar cells making 
up the gland structure, and these 
columnar cells rest on others of 
larger size, shown in the drawing. 
All the parts just described are best 
seen by a perpendicular section (Fig. 
3, magnified one hundred and sixty 
diameters), and it may also be ob- 
served that each gland lies imme- 
diately over large isolated and spiral cells, which have no 
vascular connection with the ordinary spiral structure of the 
plant. 
In.a description, without illustrations, of this series of 
glands, published in the "Edinburgh New Philosophical 




*Crgssing the middle of the pitcher; the dots are omitted in the figure. 
