CM Apex 
6 CYCADES. 
section discloses the following arrangement, a very thick 
coat, evidently and structurally divisible into two, the outer 
is thicker, having a distinct and thickish cutis, the re- 
mainder consisting of close parenchyma, of a green colour, 
and pierced with numerous irregularly disposed cavities which 
contain the mucilaginous matter, in which Cycadez so much 
abound, and which are analogous to the cavities in the 
outer coat of Gnetum, which are occupied by fibres of very 
large diameter. This coat or rather the outer part of it, is 
the primine. The inner portion is composed entirely of 
whitish dense tissue. This is the secundine, the vascular 
system consists of two fasciculi which occupy the inner part 
of the outer portion of tegument, running from base to 
The tissue of the secundine on a line with these fasciculi 
and between them, and the inner margin of the cavity in 
which the nucleus is contained, is arranged longitudinally. 
This portion of the coat is evascular, another reason for con- 
sidering it to be primine. The central cavity is round, of con- 
siderable size and is occupied by a coniform fleshy cellular 
body, the cells being dense externally, rather lax inter- 
nally, no vessels are traceable into this portion. The imme- 
diate centre is, if the section be made towards the apex, 
Occupied by an opaque body. 
June 8th, 1835. 
l. Cycas circinalis. Pl. CCCLXI. Fig. II. 
1. Female flower and portion of frond. 
2. Ditto separated. 
3. Ditto long section. 
4. Ditto outer coats partially removed, shewing the free 
cone of the nucleus. 
5. Ditto base of the nucleus and outer coats remaining, 
shewing the quartine of a globuler form. 
6. Quartine separated. 
7. Portion of cellular pulp filling its cavity. At this stage | 
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