2og 



ctification, 2 per cent, distilled below r.69 1 corr.). Between 

 i'". [83 . [8 per cent, distilled; between [83 224 , 26 per cent, came over, and 

 between 224 240 . to pei cenl distilled; leaving i| pei cent, boiling above 

 - 1" < '.. which consisted largely ol the sesquiterpene. [Tie Eractions gave the 

 follow ing results : 



First fraction, sp. gr. at 13 C. = 0-8876; rotation .',73 - 



5' ond ,, .. = 0-8975 ; ., 12-02°. 



Third ,, ,. ., = 0-9429; .. nol taken. 



The light did not pass well with the third fraction, but it was strongly 

 laevo-rotatory. The figures show the presence ol a considerable amount oi 

 aromadendral. 



In July, 1910, mat dial of this species was received from near Parramatta, 



N.S.W., forwarded [01 distillation by Dr. Cuthbert Hall. The yield oi oil was 

 0-4 per cent. The crude oil was in agreement with that from Barber's (reek, 

 and contained similar constituents in about the same amounts. Cineol did no1 

 • v 1 'I'd in per cent. 



The crude oil had specific gravity at 15° C. = 0-9158; rotation,/, n-8°; 

 refrai five index at 20 = 1-4906, and was soluble in 1 volume 80 per cent, alcohol, 

 riu- slightly higher rotation was due to an increased amount of aromadendral. 



108, EucalyptUS punctata, var. didyma. 

 (R.T.B. & H.G.S., in Euc. and their Ess. Oils, Edit. 1902, p. u;. 



Ironwood. 



Systematic. This variety is distinguished from the type by its having 

 two opercula to each bud and by the difference in its oil. The outer operculum 

 is thin, and is shed very early in the budding stage, so that it is scarcely ever to 

 be found in herbarium material. The fruit always lias a broad groove below 

 the rim, and like the leaves are always larger and thicker than those of the type, 

 while the wood is more open in the grain and less interlocked. Otherwise, 

 morphologically, there is little to distinguish it from the type. 



Habitat. Blue Mountains, Rylsi Barber's Creek, Lismore, 



Colo Vale, New South Wales. 



ESSENTIAL OIL. The oil obtained from this variet) oi E. punctata, 

 from material collected at various localities outside the Sydnej district, differed 



siderably from thai obtained from the type growing in the neighbourhood 



ol Sydney. Although th stituents were similar in both cases, ye1 they varied 



greatly in the amounts, and the I in the oil "I the variet) was , onsiderabh 



less than in that of E. punctata its. h 



