138 



In the year 1900 this species was worked commercially for its oil at Nelson, 

 near Riverstone, N.S.W. The oil obtained was practically identical with the 

 above, and the crude oil contained 61 per cent, of cineol determined by the 

 phosphoric acid method (O.M.). 



Another sample distilled at the end of the year 1900 also gave similar results. 



The above oils were mixed together and preserved in the dark, and in 

 September, 1919, nineteen years afterwards, this oil was again analysed. Not 

 much alteration was observed, except that it was a little heavier and contained 

 more cineol, 90 per cent, distilled below 190. The crude oil and the large 

 fraction gave the following results : 



Crude oil, sp. gr. at 15 C. = 0-9386 ; rotation a D + 1-6; refractive 



index at 20 = 1-4640. 

 Large fraction ,, ,, = 0-9258; rotation a D + 2-25; refractive 



index at 20 = 1-4597. 



The cineol was determined by the resorcinol method in the large fraction, 

 and calculated for the crude oil ; the result was 81 per cent. By the rapid 

 phosphoric acid method it was 70 per cent., when calculated for the original oil. 



73. Eucalyptus Smithii. 



(R.T.B., Proc. Linn. Soc., N.S.W., 1899, p. 292, t. XX). 

 White Top, Gully Ash, White Ironbark. 



Systematic. A tall tree, sometimes attaining a height of 150 feet, and a 

 diameter from 2 to 5 feet. Bark of young trees has a strong resemblance to 

 that of E. radiata, on old trees deeply furrowed, and in colour dark grey to 

 blackish up to the branches, similar to that of the "Mountain Ash" (E. Sieber- 

 iana, F.v.M.) or an "Ironbark," smooth to the branchlets. Abnormal leaves 

 sessile, resembling those of E. Australiana, E. phellandra, or E. radiata, lanceolate- 

 cordate, 5 to 6 inches long, not glaucous. Normal leaves narrow-lanceolate, 

 acuminate, of an equal colour on both sides, not shining ; venation distinct and 

 characteristic of cineol-pinene oil-yielding leaves, lateral veins fine, numerrus, 

 spreading, intramarginal ve ; n slightly removed from the. edge; petiole about I 

 inch long. Oil-glands very numerous. Peduncles axillary, flattened, about as long 

 as the petiole, with numerous flowers, from three to fifteen. Calyx turbinate, 

 narrowing into a short pedicel, the whole 3 to 4 lines long operculum 

 hemispherical, shortly acuminate. 



Fruit. Shortly pedicellate, hemispherical, inclin- 

 ing occasionally to pyriform ; rim raised/ 

 concave ; valves well exserted and ex- 

 panding, obtuse; 2 to 3 lines in diameter. 



Care is required to differentiate it from E. viminalis, 

 E. maculosa, and especially E. Gullicki, sp. nov. In 

 some cases in the early and smaller fruits the rim is 

 only slightly concave. 



Habitat. New South Wales Coast district, south from Mitta- 

 gong, also Sugarloaf Mountain, Monga, and Irish Corner 

 Mountain, Braidwood, Hill Top, Wingecaribbee, 

 Sutton Forest, Nandi, extending into Victoria. 



