167 



As the above results show that this oil was distilled from the same species 

 as that from Ballina, no further work was done upon it. 



Crude Oil from the Leaves of Callitris arenosa: — • 



No. 



Locality and Date. ' Specific Gravity, 



„ ^ ^. Refractive 

 Rotation, a^ ^^^^^ o c 



Ester per 

 cent. 



Yield per 

 cent 



I. 



Ballina, 2 '9 '04. 



0-8491 @ 23° 



+ ss-s" 



1-4760 @ 23 



5-17 



0-402 



2. 



Corrumbian Creek, 



13 I 08 



0-8452 @ 26° 



+ 18-9"^ 



1.4764 @ 26 



3-57 



0-294 . 



IV. TIMBER. 



(rt) Economic. 



This is a pale, chocolate-coloured, easy-working, free timber. It has a straight 

 grain, but, nevertheless, the figure is rather attractive, although wanting in the 

 more elaborate flower often present with the timber of C. calcarata. 



It could be used for various forms of cabinet-making, as it takes a high 

 polish ; but as other timbers are plentiful in the locality where it occurs, it is little 

 used for house-building. 



It is highly aromatic, and contains the phenol, callitrol, in some quantity. 



(&) Anatomy. 



The most characteristic feature is the small number of cells containing 

 the manganese compound substance in the xylem, but this material occurs in 

 most of the cells of the medullary rays. 



The bordered pits are very numerous on the radial walls, being well brought 

 out in Figure 103 — a radial section, and which is an exceptional field for observation, 

 showing, as it does, (i) two rows of pits in some of the lumina of the tracheidal 

 cells, an exception to the rule obtaining in other species of the genus, i.e., single 

 rows, and also (2) the diameter of each pitted cell extending from wall to wall. 



The manganese compound occurs in almost all the cells of the rays, but 

 sparsely in the tracheids, and when it is present in the xylem cells it is found to 

 be distributed irregularly in the autumnal and spring wood. 



In Figure 102 is given a tangential section of the timber showing the fusiform 

 shape of the medullary rays in this plane, the irregular number of horizontal cells 

 in each, and the presence of the manganese compound in some of them. 



