1898 - 99 .] Edith Chick on Kicinus Communis. 
661 
The only bundles to be seen besides the primary eight were in 
general those marked a and b in fig. 12, i.e ., the median members 
of those going off to the first pair of leaves after the cotyledons 
in the fully-grown plant. 
These ‘bundles’ were simply strands of smaller and more 
actively dividing cells than the rest of the tissue, and which had not 
even acquired the characteristic shape of the fully-formed bundle. 
On following the hypocotyl upwards, these bundles a and b 
appeared suddenly between cotyledon traces 1 and 8 and 4 and 5 
(fig. 19), and in only one series out of five examined could anything 
approaching branching from these traces be made out. In the 
others the bundles were quite unconnected with the cotyledon 
traces. 
In the series alluded to, however, a branch from 8 and one 
from 4 took up positions midway between traces 1 and 8 and 4 
and 5, and became bundles a and b respectively. Following these 
bundles up towards the growing point, they are seen to continue 
on when the cotyledon traces, leave the central ring, and afterwards 
pass into the first pair of leaves, whose rudiments are always 
present (figs. 18 and 21). 
The embryos differed, however, in the amount of development 
of their tissues, and in some cases the procambial beginnings of 
some or all of the bundles c, d, e, f could be distinguished. These 
in a series cut from below upwards appear, however, later than 
the bundles a and b; in fact, they are seen only just before the 
cotyledon traces leave for the petioles. 
Higher up still, at the level of fig. 21, these extra procambial 
strands had quite disappeared, and only a and b were to be seen 
in the first pair of leaves. In this series the bundle c could be 
traced through eight sections, each 7 '5 /x in thickness, i.e., through 
a distance of '06 mm. 
In an embryo of this stage the bundles a and b attain their 
greatest development just below the level of the growing point, 
and such of the bundles c, d, e, f as may occur are only found at 
this same level. 
In a transverse section of this region they appear cut very 
obliquely, and are evidently in the act of passing outwards from 
the cone of apical meristem to the circumference of the vascular 
