142 AROIDES. 
below the swollen apiculous part, until its head is exserted, 
and the plumule has commenced its development. 
But nothing can shew clearer that its protrusion is not 
the consequence of resistance opposed to it, than this, namely 
that it commences elongating downwards directly that resis- 
tance is counteracted, and until the cotyledon reaches the 
fundus of the nucleus, it continues to enlarge downwards, 
quicker than the plumule does upwards. 
Pl. CLXXIII. Fig. ПІ. c, 4, e. Represents the embryo 
of a monster, c radicle, d plumula, e cotyledon. 
The changes that occur as the seeds advance, consist in an 
enormous disproportion between the plumule and cotyledon, 
so that the fact is at once pointed out, that the development 
of the plumule constitutes germination, which is always at- 
tended by the enlargement of that organ, and the absorption 
of the cotyledon. So that the great anomaly of а cotyledon 
becoming ampullated, in a measure disappears. Accordingly 
we find that the tissue of the nucleus becomes free from 
fecula. 
In this Malacca species nothing can be plainer than the 
germination inter pericarp et testa. 
Forin the fruit at the time of dehiscence, the cotyledon 
willbe found to separate, the axis is an immensely large 
fleshy cone, producing from the whole surface the subulate 
leaves of the plumule, the innermost being distinctly leaves 
in form, vernation, etc. 
The testa ruptured. At this period the testa has lost 
all its spongy matter, and is a fine membrane, it separates 
with the proportionally small urceolate nucleus and cotyledon. 
And is erect, not that the perforation of the nucleus takes 
place before the cotyledon has assumed its mature organi- 
sation. I should be inclined to. refer the whole of the pheno- 
mena to a very early, and included germination. 
The embryo has now an obliquely exserted apex, as seen in 
the right hand figure Ш. Pl. CLXXIII; this is of the usual 
