293 



The above two samples were mixed and stored in the dark, and in November, 

 1919, the oil was again analysed. Very little alteration had taken place in the 

 oil during the twenty years it had been kept, with the exception that the optical 

 rotation had been reduced by about 10 degrees. This appears to be due to the 

 alteration of the phellandrene, as the loss was about the same in both the crude 

 oil and in the rectified portion. 53 per cent, distilled below 190 C. The crude 

 oil and the rectified portion gave the following results : 



Crude oil, sp. gr. at 15 C. =- 0-8970; rotation -- 33-4; refractive index 



at 20 = 1-4827. 

 Rectified portion ,, =0-8696; rotation </ - 43-6 ; refractive index 



at 20 = 1-4753. 



1 he cineol was determined by the resorcinol method in the rectified portion ; 

 when calculated for the crude oil, the result was 17 per cent. As piperitone was 

 present, a ketone determination was made in the rectified portion, with the result 

 that 10 per cent, was absorbed, so that about n per cent, of cineol was present 

 in the crude oil. 



158. Eucalyptus campanulata. 



(R.T.B. & H.G.S., Proc. Roy. Soc., N.S.W., 1911, p. 288.) 

 A Stringybark. 



Systematic. An average forest tree, with a stringybark, persistent on the 

 trunk, branches smooth. Abnormal leaves broad-lanceolate, oblique, not shining, 

 alternately petiolate, often over 9 inches long. Normal leaves lanceolate, oblique, 

 falcate, acuminate, sub-coriaceous, about 4 inches long ; venation not prominent 

 on the upper side, intramarginal vein well removed from the edge, lateral veins 

 very oblique. Umbels with about six flowers, usually axillary, peduncles 6 lines 

 long, angular, sometimes flattened. Buds clavate, tapering to pedicels about 2 

 lines long; operculum domed, sometimes shortly pointed. 



Fruit. Oblique, campanulate in early stages, 

 mature fruit pyriform ; rim truncate or 

 slightly countersunk ; valves scarcely ex- 

 serted ; 2 to 3 lines long and 2 lines wide. 



The fruits mostly resembling these are those of E. 

 virgata or E. Sieberiana. 



Habitat. Tcnterfield, Upper Williams River, New South Wales. 



ESSENTIAL OIL. Leaves and terminal branchlets for distillation were 

 obtained from Tenterfield in January, 1910. The material was collected as for 

 commercial distillation, so that the yield is an average one. The crude oil was 

 of a light-yellowish tint, and had a secondary odour of peppermint, due to the 

 presence of a small quantity of piperitone. The occurrence of this constituent, 

 and the absence of the aldehyde aromadendral, distinguishes the oil of this species 

 from that of E. obliqua. The oil consisted principally of phellandrene, and pinene 

 was practically absent. Cineol was detected in the portion distilling at about 

 176 C., but it was very small in amount. A small quantity of crystallised 

 eudesmol was also present. The oil of this species agrees with those of the 



