66 
ORGANOGRAPHY. 
BOOK I. 
glands of Sisymbrium chilense ; in the pestle there is a yellow 
volatile oil ; at the base are three cells of the epidermis ; 
^5 from the inside of the under-lip of Antirrhinum majus : 
the cell containing the glandular matter is at first cylindrical ; 
it then forms a head, from which another cylindrical joint is 
emitted, to which a second head is afterwards formed, and 
upon wdiich another joint with its head is eventually developed ; 
h is a stalked gland from the stem of the same plant ; i, a 
double-headed gland from the flower stalk of Lysimachia 
vulgaris. 
Compound Glands : — c, a compound sessile gland of Dictam- 
nus albus, consisting of a skin which is colourless, and a centre 
which is filled with a thick green etherial oil ; compound 
glands from the flower stalk of Sanguisorba carnea; A, a side 
view of the compound gland of the hop, which chemists call 
LupuLin (Meyen entirely denies the accuracy of Raspaifs 
description of this body) ; Z, a compound red gland from 
Ailanthus glandulosa ; oblong stalked glands from Begonia 
platanifolia : they resemble drops of resin, or something of 
that sort. 
Other modifications of glandular apparatus are what some 
botanists cdiW. papulce, ov papillce {fig> 16. e and n.) 
Glandid(E utriculares of Guettard ; these are transparent 
elevated points of the epidermis, filled with fluid, and covering 
closely the whole surface upon which they appear. In other 
words, they are elevated, distended bladders of the epidermis. 
The presence of papillae upon the leaves of the ice plant gives 
rise to the peculiar crystalline nature of its surface. 
There are, moreover, in many plants internal glands, that is 
to say, collections of cells densely compacted, and filled with se- 
creted matter which hardens them, or renders them transparent. 
They are in some cases nearly of the nature of cysts, already 
described. In Dictamnus alba they form spherical nuclei, 
lying just below the cuticle, and filled with an etherial 
oil, rich in resin and camphor (Jig. 10.) In Nepenthes 
they occur in two different states ; the one as angular nuclei 
below one of the forms of stomate found in that plant; the 
other as hard, deep brown disks, lining the cavity of the 
pitcher, sunk below the epidermis, through which there are 
