42 BOTANY. 
as it is placed in the stem) is a mass of sieve-tissue, com- 
posed of latticed cells (v, v, Fig. 25). Surrounding the 
whole is a thick mass of fibrous tissue composed of elon- 
8 
>< 
7 OER 
YA ECL Fie 
ee, SNE 
ete cen. Sen 
SO ZA rSo7 (yy Ne 
: ‘i i 
LIN 
Boros 
aves 
68 
any: 
> 
ts} 
0a 
‘Bp 
ee 
Fia. 26.—Fibro-vasoular bundle of Castor-oil Plant. ¢,¢, g, g, tracheary tissue; 
ps y, sieve-tissue poorly developed; 8, b, bast-fibres; c,c, cambium-cells. High- 
ly magnified. 
gated, thick-walled cells (the shaded ones in the figure). 
81. In the Castor-oil Plant the limits of the fibro-vascular 
bundles are so poorly marked that in places it is impossible 
