26g 



The specific gravity of the criidi' oil at f^° C. — 0-8582; rotation cIq = — 

 4-7°; refractive index at 20° C. = 1-4749. The saponification number was 7-88, 

 equal to 2-76 per cent, of ester. 



On redistihing, practieaUy nothing came over below 155° C. Between 155° 

 and 157°, 50 jier cent, distilled; between 157" and 170°, y^ per cent.; between 

 170° and 180°, 10 per cent. 



The specific gravity of the first fraction at x|° C. = 0-8512; of the second, 

 0-8502; of the third, 0-8482. The rotation of the first fraction a^, = + 6"6° ; 

 of the second, — 4*5°; of the third, — 22-1°. The chemical products were 

 readily prepared with the first fraction, proving it to consist mostly of pinene. 

 That limonene was present in the oil is also indicated by the above results. There 

 was an almost entire absence of the higher boiling constituents, and no indication 

 of a sesquiterpene corresponding to cadinene was detected. 



The oil of this species is distinct from that of any other Callitris, thus 

 supporting botanical and other characteristics. 



The fruits of this species are apparently devoid of oily constituents, and 

 26 lb. removed from the green branchlets, although distilled for five hours, did 

 not give a single drop of oil. 



Crude Oil from the Leaves of Callitris Muelleri : — 



Locality and 

 Date. 



Specific 

 Gravity ° C. 



Rotation a^ 



Refractive 

 Index - C. 



Ester 

 per cent. 



Yield, 

 per cent. 



The Spit, Sydney, 

 20 9/07 



0-8582 @ 24 



- 47 



1-4749 @ 20 



2-76 



0-103 



IV. TIMBER. 



(a) Economic. 



This is a pale-coloured timber, but as the tree is so sparsely scattered and 

 attains only a small diameter it is necessarily not found in commerce, and so is 

 never likely to be of any commercial value, unless cultivated. 



(b) x\natomy. 



The main features of this timber show some specific characteristics, as, 

 for instance, the medullary rays are almost uniformly fewer-celled in height 

 than, perhaps, other species, and there appears to be less manganese compound 

 content, so pronounced in corresponding cells of other species, and thus this 

 substance is not by any means a prominent feature of the tracheids. 



