The Pines of Australia. ' ' 



Figure 207. — Transverse section through timber. The tracheids with 

 smaller lumina towards the top mark the autumn growih. 

 Two rays are included running from top to bottom of 

 picture, the centre one containing some manganese com- 

 pound. A. pyramidalis- x So. 



Figure 208 — Transverse section through timber. Traumatic resin mass 

 running obliquely through the centre. The rays are 

 located by the black lines running from ton to bottom. 

 the colour being due to manganese compound. A small 

 quantity of this substance is also seen amongst the tracheids. 

 A. pyramidalis, x loo. 



Figure 209.— Tangential section through timber. A. pyramidalis, x izo. 





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Figure 210 ^Radial section of timber. The parenchymatous cliaracter 

 of the outer cells of the rays are distinctly seen in the 

 lower medullary of the section. A. pyramidalis, x ico. 



Sections of timber of Aetinostrobus pyramidalis, Miq. 



