APPENDIX I. 



exposed in one cut, are somewhat differently coloured. The 

 colours are always enumerated from the outside inwards, 

 ending with the colour of the freshly exposed wood if 

 characteristic. If the colours of successive layers alternate, 

 the word banded, is employed. Thus the alternation of 

 successive layers of bast fibres and phloem parenchyma may 

 produce a banded red and white. Owing, presumably, to 

 oxidation of cell contents, the colour of the blaze darkens 

 after a time, but in some cases this is so rapid that the 

 change is visible immediately, and the colour may turn from 

 light to deep brown in about a minute. The Cordis are a 

 good example. 



ANONACEiE 



Alphonsea ventricosa. Bark smooth, thin. Blaze thin 

 brown layer, then white. 



Miliusa velutina. Bark grey, rather cracked, moderately 

 thick to thick. Blaze dark-brown, then thick ligbt-brown or 

 dirty brown with lighter streaks. Wood white. 



Polyaithia cerasioides. Bark not thick, rongh, grey. 

 Blaze deep brown then yellow, only the yellow notictable in 

 young trees. 



Saccopetalum tomentosum. Bark brown, nearly smooth 

 or, in old trees, fiuted. Blaze, thin outer brown layer, then 

 narrowly banded yellowish or light brown and white. Wood 

 white. 



LAURACEJB. 



Litsaea polyantha. Bark smooth. TSlaze somewhat 

 grating, a mixture of brown and white. 



BIXACEJE. 



Cochlospermum Gossypium. Bark thick, fluted. Blaze 

 deep brown and rather hard outside in old trees, light brown 



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