293 



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

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

 oil during the twentj vears il had been kept, with th ption thai the optical 



rotation had been reduced l>\ aboul to degrees. rhis appears to be due to the 

 alteration of the phellandrene, .1- the I"-- was aboul the same in both the 1 rude 

 oil and in the rectified portion. 5 ; pei cent, distilled below [90 < - The crude 

 oil and the rectified portion gave the following results : 



Crude oil, sp. gr. ai 15 C. 0*89705 rotation a , ;■ 1 ; refractiv< index 



.it 20° = 1-4827. 



Rectified portion ., = o-S6(j(> ; rotation a 43-6 ; refractive index 



;it 20 = 1-475 i 

 rhe cineol was determined by the resorcinol method in the rectified portion ; 

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

 present, .1 ketone determination was made in the rectified portion, with the result 

 that 10 per cent, was absorbed, so that about 11 j ■* r cent, oi cineol was pr< 51 n1 

 in the crude oil. 



158. Eucalyptus campanulata. 



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

 A St.ringybark. 



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

 trunk, branelu 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, intt amarginal vein well removed from the edge, lateral veins 

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

 long, angular, ometimes flattened. Buds clavate, tapering to pedicels about _' 

 lines Ion-; 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 frails mostly resembling these are those of E. 

 virgata <" E. Sieberiana. 



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



ESSENTIAL OIL. Leaves and terminal branchlets lor 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 

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

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

 and the absent e oi the aldehyde aromadendral, distinguishes the oil oi this species 

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

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

 [76 ( .. but it was \ei \ small in amount. A small quantity of crystallised 

 eudesmol was also present. fhe oil oi this species agrees with those oi the 



