490 



167° (corr.), and 34 per cent, between 167-172° C. These 

 two fractions gave the following results : — 



First fraction 

 Second fraction 



Sp. gT. at 15° C. 



0'8604 

 0'8o69 



Rotation aj) i Ret', index at 20°. 



+ 17*5 C 



•+ 9'V 



1-4715 

 1-4746 



The nitrosochloride was readily formed with the first 

 fraction, and this, when purified, melted at 104° C. It is 

 thus evident that the chief terpen e in the oil of this species 

 is dextrorotatory pinene. 



The specific gravity and refractive index suggest that the 

 other terpene is limonene, and probably cymeiie is present 

 also. The oil of this species is thus shown to contain a 

 predominance of terpen es. 



28. Eucalyptus fasciculosa, F. v. M. 

 A "White Gum." 



Mueller described this tree in Trans. Vict Inst., vol. 34,. 

 but Bentham, 1866, (l Flora Australiensis," vol iii., p. .212,. 

 synonymizes it under E. panicu/a/a ; Mueller, in his 

 "Eucalyptographia," 1879, concurs in such a classification, 

 but Maiden, in Trans. Roy. Soc. S. Aus., 1908, p. 280, shows 

 that these two are distinct, and as this is not an "Ironbark" 

 they should be separated. 



It is another instance proving that something more is 

 required in the specific determination of Eucalypts than a 

 morphological comparison of leaves, fruits, etc. 



J. E. Brown figures and describes it in his "Forest Flora 

 of South Australia," p. 46, under the name of E. paniculata. 

 There can be no doubt that the flowers, leaves, and fruits 

 there figured much resemble E. paniculata, and there is also 

 a strong connection in the chemistry of the oils of the two 

 species, but the timbers, bark, and habitat well indicate the 

 specific differences. 



Essential Oil. 



Leaves with terminal branches of this species were 

 received for distillation from the Conservator of Forests 

 of South Australia, Mr. Walter Gill, in the month of 

 December. 



The average yield of oil was 0"019 per cent., only one- 

 ounce of oil being obtained from 329 lb. of material. The 

 species is thus a very poor oil-producing Eucalypt. The crude 

 oil was somewhat mobile, of a dark-amber colour, and an 



