442 
in the majority of cases, one or two towards the centre siicM け nly increase 
in tliickne が . . 
A number of elongated parenchymatous masses is commonly : found 
radially arninged in the central portion of け 化 が ctiou. 
In a longitiidiiiMl section these れ nmml rings iippear as U-sliaped 
1 が ei，s of variable thickn が s. The tliicim も ss of each layer gnulually 
increases from the end of botli arms of U towards Us curved base. 
At the thickest portion the layer often measu]：es even two cm. The 
elongated parenchymatous mas が s arc fbimd running 泣 cross a number 
of annual rings in a curved course む om the axiai portion towards the 
periphery of the バ cltichi り ， and some of them reach the coirtex. These 
parenchymatous elements are especially abundant at the tip of the 
" chichi • I 
A longitudinal section, passing through both the basal poirtio 凸 of 
a " chichi " grown む om a lateral brancli and that pa パ of the branch 
from which the ‘< chichi " grow も reveals that the annual layers of the 
【 ( chichi ，， are the direct continuations of those of the branch. So the 
entire wood of the い cliiclii " appears in such sections like a bulged oiU 
!)o パ ion of the wood of the branch. 
The tracheides of the wood of the " chichi り present very winding 
courses， and the medullary rays are i り creased iu tlieir bulk. Thus 
the regularity of arrangement is greatly cles か oyed in the elemeiUs of 
the wood pcn’tion. The cro が section of the wood often shows the 
longitudinal section of the tracheides ； and the longitudinal section of 
the wood, the cross section of the tracheides : and sometimes a single 
section cuts through a group of tracheides in all directions. 
When the cortex is pealed off， the wood of the ‘( chichi ’， shows 
a very wavy surface with a great number of small conical protuberances. 
A closer examina だ o 打 shows that the parenchymatous masses が ated 
before ends in the interior of the が protuberances. 
On examining the earlier stages of development of the (( chichi ，，， 
we find always a latent bud at the tip of the small protuberance, 
and scalarliform-reticulate cells among the elongated parenchymatous 
masses above stated, [rhus the small conical protuberances on the 
surface of the wood of the い chichi バ repi^esent the tips of shoots of 
many years’ growth, remaining dormant in the tissue of the co け ex. 
N atuv 色 of ((c なえ c もく ，， — Nofcwitlistanding the peculiar form and 
xetraorcl inary sizes, the mode of occurrence and the anatomical structure 
