i68 



Figure 103 gives a radial section showing two autumnal periods of grovth 

 at the sides, and one vernal period in the centre of the section. The single pits 

 of the rays are conspicuous in the centre, whilst a double row of bordered pits 

 in some of the tracheidal cells to the right centre is, as stated above, unusual in 

 Ca/litris. 



Figure 104 shows a transverse section through the wlem, cambium, and 

 one resin cavity in the inner cortex, and also the regular parallel arrangement 

 concentric of the bast fibres. 



(c) Chemistry. 

 (See articles on the Phenol and the occurrence of Guaiol, &c.) 



V. BARK. 



(fl^ Economic ^^vide Chemistry). 



(6) Anatomy. 



Practically this bark is identical in structure to that of the genus in general ; 

 the walls, however, of the various cells have perhaps a more distinct definition, 

 especially in the periderm bands (Figure 105), in fact, more so than in any other 

 species ; whilst the parenchymatous, concentric cells appear under a low magni- 

 fication to occupy almost the entire space between the uniseriate ring of hard 

 bast fibres, and so a higher magnification is required to detect the sieve tubes 

 intervening between them and these sclerenchymatous tissue. 



The bands of cork layers and oleo-resin cells are more numerous in this 

 species than probably any others. 



Figure 105 is a transverse section through a junction of the outer and inner 

 corte.x, the boundary between the two being marked by a broad band of periderm 

 layers. The bast fibres are seen to be in regular rows, and the parenchymatous 

 cells empty in the inner and filled with the manganese compound in the outer 

 bark. Figure io5 is a perpendicular section through the inner cortex, antl 

 illustrates particularly well the parenchymatous nature of the cells between the 

 sieve tubes surrounding the bast fibres, two of which are seen extending in con- 

 tinuous lines from the top to the bottom of the plate. The form of crystals 

 composing the bast fibres is given in the article on bark under Anittcaria Bidwilli. 



(c) Chemistry. 



The bark of this species was received at the Museimi from Mr. Shari)e of 

 North Creek, Ballina, and it was taken from a tree about i foot in diameter. In 

 appearance it more closely resembled the bark of C. calcarata than that of (' . glauca, 

 and in section the outer corky layer was very pronounced. It llm^dillcKd bolli in 



I 



