The Pines of Australia. 



ii: 



■«!>' 



Figure 62.- 





-Transvexse section through bark. Two light- coloured bauds 

 of periderm layers are shomi near the top or outer bark. 

 The parallel, interrupted dark lines are the bast fibres, and 

 the oval spaces oleo-re=in cavities. C propinqua, x 52. 



,s«>^'^ii.'-'-^'L -_i«.^- --^■' ■^"-.^--r:pJ--1■-■■J?3- 



■"■«i%^' 



Figure 63. — Transverse seciioa through the bark. ,^ -The bast cells are 

 indicated fay the black broken, parallel lines, whilst the 

 lighter band towards the outer bark marks a periderm 

 layer. C. propinqua, x 2S. 



Figure 64. — Transverse section through the bark. The black lines in 

 left of picture from top to bottom are bast fibres separated 

 by parenchymatous cells and sieve tubes. Towards the 

 right centre the light spaces are oleo-resin cells. The outer 

 bark is the broken edge on the right. C. propinqua, x 25. 



Sections of bark of Callitris propinqua, R,Br. 



