231 



terpene appears to be dextro-rotatory ; phellandrene could not be detected. 

 Cineol was present in small amount ; it was determined quantitatively in the 

 second fraction. Aromadendral was present in some quantity in the higher 

 boiling portion, and the occurrence of this aldehyde was also indicated by the 

 rotation figures. Esters were not pronounced, but volatile aldehydes were 

 present in some quantity. 



The crude oil had specific gravity at 15 C. = 0-9098; rotation a v + 1-35; 

 refractive index at 20 = 1-4714, and was soluble in i volume 80 per cent, alcohol. 

 The saponification number for the esters and free acid was 6-2. 



On rectification, 2 per cent, distilled below 162 C. (corr.). Between 

 162-172, 35 per cent, distilled ; between 172-204, 52 per cent, came over, and 

 between 204-235, 6 per cent, distilled. These fractions gave the following 

 results : 



First fraction, sp. gr. at 15 C. = 0-8939; rotation a D + 6-97. 

 Second = 0-9096; + 0-24. 



Third ,, ,, =0-9464; - 9-94. 



The cineol, determined by the phosphoric acid method in the second 

 fraction, gave a result indicating about 19 per cent, of that constituent in the 

 crude oil (O.M.). 



This sample of oil had been stored in the dark, and in August, 1919, was 

 again analysed. From the results now obtained, nineteen years after the oil was 

 distilled, it is evident that little alteration had taken place during all that time, 

 and the constants of specific gravity and optical rotation were practically the same. 

 No deposit had formed in this oil, nor does it occur in any oil belonging to this 

 group. Perhaps the cineol had increased a little in amount. The crude oil 

 and the redistilled portion gave the following results. 86 per cent, distilled below 

 190 C.:- 



Crude oil, sp. gr. at 15 C. = 0-9138; rotation a D + 1-2; refractive index 



at 20 = 1-4712. 

 Rectified portion ,, =0-9050; rotation a D + 4-0 ; refractive index 



at 20 = 1-4667. 



The cineol was determined by the resorcinol method in the rectified portion 

 and calculated for the crude oil ; the result was 47 per cent. 



A cineol determination by the phosphoric acid method in the rectified 

 portion gave 35 per cent., representing about 30 per cent, in the crude oil. 



123. Eucalyptus viridis. 



(R.T.B., Proc. Linn. Soc., N.S.W., 1900, p. 316, t. XIX.) 

 Green MaUee, Rei Mallee, Brown Mallee. 



Systematic. A " Mallee " of dense growth, the stems usually 2 to 3 inches in 

 diameter, but occasionally measuring 20 feet in height ; it rarely grows to tree size ; 

 bark smooth, or only rough at the base of the larger trees. Abnormal leaves con- 

 stantly much narrower than normal leaves. Normal leaves erect, narrow-lanceolate, 

 to almost linear, under 6 inches long, mostly 2 to 4 inches, obtuse or acute, colour 

 rich green, but lustreless on both sides, petiole short ; venation obscured, lateral 



