The sesquiterpene was also present. The higher-boiling portion came over as a deep- 

 blue oil ; this peculiarity has often been noticed with the oils of certain Eucalyptus 

 species, particularly in the portion distilling at about 250-280 C. The aroma- 

 dendral was extracted from the mixed third fractions in the usual way, its oxime 

 prepared, and its other characteristics determined. 



When the results obtained with these two samples of oil are tabulated, it 

 is seen how closely they agree. 



Amount distilling between 169-183° C. 



183-214 C 



2 14-245 ° c. ••• 



245-252 c 



First fraction : — 



Specific gravity at 15° C. 



Optical rotation a It 



Refractive index at 20° C. 

 Second fraction : — 



Specific gravity at 15° C. 



Optical rotation a D 

 Third fraction : — ■ 



Specific gravity at 15° C. 



Optical rotation a D 

 Crude oil : — 



Specific gravity at 15° C. 



Optical rotation a D 



Refractive index at 20° C. 



Saponification number for esters and free acid 



Solubility in alcohol 



Yield of oil 



The high laevo-rotation of the higher-boiling fractions was due to the aroma- 

 dendral, and this influence was also shown in the crude oils. 



The esters were entirely saponified in the cold with two hours' contact, 

 giving an aromatic oil with a strong resemblance to geraniol; the acid was acetic. 

 It is thus probable that the ester was geranyl-acetate. 



The results obtained with these oils were published by us in the 

 Pharmaceutical Journal, London, September, 1905. 



