I be mixed oil oi this species was pres( rved in the dark, and in September, 

 1919, twenty-one years afterwards, was again analysed. \<>t much alteration 

 had taken place in the oil during thai period, excepl thai the cineol had 

 apparently increased, and consequently the specifii ravitj also 90 pei cent, 

 oi the oil dii illed below i()o a C. The crude oil and the large frai tion gave the 



follow ing results : 

 Crude oil, sp. 



err. 



at 15 C. 



Large traction 



refractrs e 

 refrai n\ i 



0-9383 ; rotation a„ + 4-4 



index at 20 = 1-4667. 

 0-9220; roiati1.11 a, -)- 3-5° 

 index at 20° = 1-4599. 

 The cineol was determined in the large fraction !>\ tin re-orcinol method 

 and calculated for the crude oil ; the result was 8: percent. B3 the phosphoric 

 acid method it was 79 |>er cent, when calculated for the crude oil. 



Material oi this spe< :ies was also obtained from Bungendore, N.S.W., in 

 June, i,s,,s. The oil differed but slightly from that obtained from Ilford, with 

 the exception that the specific gravity was somewhat higher. Considering the 

 difference in the time of year this was to be expected, as the presenl sample 

 was distilled in midwinter. The yield of oil was o-68 per cent. It wis rich 

 in cineol and free from phellandrene. 



Leaves of this species, the "Butt-butt," of Gippsland, Victoria, were 

 received from .Mr. A. \Y. Howitt, F.G.S., in July, 1898. The oil from this material 

 differed in no respect from the above samples ; was equally rich in cineol, contained 

 pinene, and phellandrene was absent. The yield oi oil was 0-58 per 1 ent. 



Later, in September, iSqq, we received material of this species for dis- 

 tillation from Mr. J. F. Campbell, who obtained it at Walcha, N.S.W. It had 

 been collected as would be done for commercial distillation. The crude oil was 

 of an orange-yellow colour, and had an odour characteristic oi oils belonging to 

 the cineol-pinene class. Cineol was the principal constituent ; it also contained 

 some pinene, but phellandrene was absent. The higher boiling portion consisted 

 largely of the sesquiterpene. The ester was small in amount, similar to the 

 other oils of this species so far tested. The rectified oil was slightly tinged yellow, 

 a character common with the rich cineol oils belonging to this class. 



In April, iqoS, material of this species was sent from YYoolbrook, N.S.W., 

 by the Museum collector. The oil distilled from this was identical with that from 

 material sent from Walcha main - years previously. 



The following results were obtained with the crude oils from these two 

 localities : — 



Wall ha. 



18th Si |ii, in in;. 1899. 



Wootbrook. 

 ii \pril, 1908. 



