289 



The Pines of x\ustralia. 





Figure 204. — Transverse section at junction of timber and bark, showing 

 the cambium, in the neighbourhood of which the paren- 

 chymatous cells contain the manganese compound, and 

 forming a distinct line between the bast fibres. It also 

 shows the gradual increase in size of the tracheids as 

 they recede from the cambium in their early growth. 

 C. Macleayana, x 100. 



