iSg 



amount of borncol, which was separated and determined as in the case of C. glmica. 

 The liquid portion gave a marked secondary odour of terpineol, which was most 

 persistent. Geraniol was not strongly marked. When agitated with hydriodic 

 acid a heavy oil was formed, from which a small amount of crystallised substance 

 was eventually obtained. This melted at about 78° C. and was most probably 

 dipentene dihydriodide CioH.gL, thus confirming the presence of terpineol. 



The free acids were determined b}" evaporating the alcohol from the 

 aqueous portion, and distilling with sulphuric acid, until all the free acids had 

 come over. The barium salt was prepared in the usual way, and 0-5642 gram gave 

 0-5012 gram, BaSO^ = 88-83 P^r cent. A second determination gave identical 

 results. The presence of but^aic acid was most marked when distilling, and the 

 characteristic odour of its ethyl ester was easily obtained. If only butyric and 

 acetic acids were present, then the salt contained 84-71 per cent, of barium acetate 

 and 15-29 per cent, of barium butyrate. 



It is thus seen that the oil of this species has several distinctive characters 

 from those of any other species of Callitris. 



Crude Oil fi 



om the Leaves of Callitris gracilis. 





Locality and Date. | Specific Gravity 



I 



Rotation a^ 



Refractive Index, gster per cent Yield per cent. 



i 



Tal Tal Mountain, 0-8683 @ 20 + 8-7 

 22 '3 05 



1-4752 @ 20 I2-I 



! 



0-723 



IV. TIMBER. 

 (a) Economic. 



This pine grows to the a\'erage height of a Callitris, i.e., 60 feet. The 

 timber is slightly heavier than that of C. rhomhoidca ; it is straight in the grain, 

 and possesses a rather pleasing figure, produced by small medullary rays. 



It could be used for indoor carpentry and panelling, and takes a good 

 polish. 



As its habitat is the rockj' sides of ridges it should be a splendid timber 

 for afforesting these barren places, ^^■ith some hopes of monetar}- returns. 



{b) Anatomy. 



Figure 125 is taken from a two-years old growth, and is interesting, as it 

 shows a large number of cells containing the manganese compound in the tracheids, 

 at this period of the tree's life history. 



