The Pines of Australia. 



J2g 





Figure 147. — Transverse section through timber, with autumnal tracheids 

 running through the centre of section. Tlie continuous 

 dark lines indicate the rays and the scattered rectanfjular 

 markings are the brown manganese contents of the 

 trachficls. C. rhomboidca, x So. 



Figure 148. — Tangential section of timber of C. rhomboidca, x loo. 



Figure 149. — Radial section of timber. In this case the pits of the 

 bordered and simple cells have been focussed, and are 

 indicated by the black " pin " points. Tiie dark black 

 line on the left of the picture is the manganese compound. 

 C. rhomboidca, x too. 



Figure 150. — Radial section through timber, showing varying height of 

 three of rays. C. rhomboidca, x loo. 



Sections of timber of C. rhomboidea, R.Br. 



