_'oS 



(c^ Chemistry. 

 (Sec articles on the Phenol and the occnrrence of Gnaiol.) 



(d) Forestry. 



As a siiitable tree for stony and barren ridges of the coast ranges and 

 interior it has lew compeers, and as the timber is highly ^'alued on acconnt of its 

 ornamental character and comparati\'e innnimitx' from the attacks of termites, 

 it is worthy of every consideration for forest culture. 



The exceeding value of its bark as a tanning material causes tliis tree to 

 be of special interest, and from its natural growth and location no great care 

 would be needed to preserve for all time natural plantations of this valuable tree, 

 so as to supply the needs of the builder and of the tanner, to say nothing of the 

 value of its resin. 



From data supplied b}- correspondents it will be seen how extensi\'ely 

 this species is distributed on the hills and ranges, and how readily plantations 

 of any extent could be propagated with ordinary care and attention. 



V. BARK. 



(a) Economic. 



The same remarks in this connection apply as those given above under 

 Forestry. (Vide also Chemistry.) 



(b) Anatomy. 



This bark is outwardly darker in colour and more compact than that of 

 C. glaiica, with which species it is so closely associated in the field. 



Macroscopically this part of the tree may be divided in a cross section 

 into two parts, the inner and outer cortex, being dark and light coloured 

 respectively. 



The reddish apj^earance of tlie inner cortex is where the live tannin cells 

 predominate, whilst the coloiu" ol tin.' ouUr appears to be due to the blocking up 

 of the parenchymatous cells with dead matter, principally manganese compound 

 and tannin. 



'i'lie structur( lollo\\> in a measure tlie general and regular rule of llu' 

 genus, consisting of alternate, uniseriate, concent ik rings of sie\-e tulxs, 

 parenchymatous cells, bast fibres, and bands (jf peiideim al \arying intervals. 



.\ltliough a conformity exists between this bark iiml liinl of C. glaucn in 

 the presence of similar cells and tissue, yet when microscopically examined a 



