143 



In the tangential sections, Figures 84 and 85, a good end-on view is obtained 

 of the medullar}' rays. They are the dark, black-coloured fusiform bodies embedded 

 in the radial, vertical walls of the tracheids, a single cell in breadth, and ranging in 

 number from two to tweh-e in height. The black colour is due to the presence 

 of the manganese compound. 



These two sections are of further interest in that they show distinctly a 

 run of contiguous bordered pits in some of the radial walls, and the greater magnifi- 

 cation of Figure 85, details fairlv well the torus and closing membrane. The 

 manganese compound was found to be present in nearly all sections of timber 

 cut, as indicated by black patches or spots scattered throughout the xylem, yet 

 there was quite an absence of constancy in the dispositions of the cells, so that 

 the\- were found to be of little value for systematic classification. 



(c) Chemistry. 



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



(d) Forestry. 



From the economics deducted in this research, be3^ond those already known, 

 this tree is worthv of serious consideration for svhiculture especially for its timber, 

 as it is naturally adapted to withstand the natural conditions of the interior of this 

 continent, thus flourishing where many other trees would perish. Its timber is 

 highly prized for house-building, fencing, &c., in those parts, more especially for 

 its white-ant resisting qualities. 



The pine-timber industr}" has been largeh* responsible for the opening up 

 of some districts in New South Wales. To give one instance : Years ago what 

 was then known as the Dubbo Bush was exploited ; this forest extends back to 

 Cobborah on the one side, and a splendid lot of timber has been obtained from this 

 bush. C^'press Pine predominates, and this timber is one of the best for building 

 purposes. At Balladoran a mill was established for dealing ^\-ith Cypress Pine, 

 and employed a great number of men ; and other similar cases could be quoted. 



It is stronelv recommended as a tree suitable for South African forestrv. 



V. BARK. 



(rt) Economics. 



Apart from its yielding resin, the presence of tannin in the bark, shown 



bv the numerous anah'ses, proves it to be a tan bark of some value (see anah'ses 



appended). 



(b) Anatomy. 



The most characteristic feature of the bark is the very large number and 

 size of the oleo-resin cells distributed throughout the entire cortex, both inner 

 and outer. Macroscopically they appear, in a freshly transverse cut of the mass. 



