252 



Fhis sample oi oil had been stored in the dark, and in September, iqiq, 

 twentj one years after, was again analysed. The Laeyo-rotation of the lower 

 boihng portion had diminished considerably, and the specific gravity had increased 

 a little, otherwise not much alteration had taken place during this long period. 20 

 per cent, distilled below iqo C. The crude oil and the rectified portion gave 

 the following results :— 



Crude oil, sp. gr. at 15 C. = 0-9553; rotation not taken; refractive index 



at 20 = 1-5079. 

 Rectified portion ,, =0-8901; rotation a D — -po°; refractive index 



at 20° = 1-4805. 

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

 when calculated for the crude oil, the result was 5 per cent. 



135. Eucalyptus angophoroides. 



(R.T.B., Proc. Linn. Soc, N.S.W., 1901, p. 676.) 

 Apple-top Box. 



Systematic. — A medium-sized tree, with a white box bark, persistent to the 

 ultimate branchlets. Abnormal leaves ovate-acuminate, cordate, shortly petio- 

 late, glaucous, variable in size from 1 to 3 or 4 inches long, and 1 to 3 inches broad ; 

 venation indistinct on both sides. Normal leaves narrow-lanceolate, about 6 

 inches long, acuminate, not shining, of the same colour on both sides ; venation 

 finely marked, oblique, spreading, intramarginal vein removed from the edge. 

 Peduncles axillary, 3 to 4 lines long, slightly compressed, bearing a few flowers. 

 Calyx tube hemispherical to pyriform, 1 line long, on a pedicel of equal length ; 

 operculum hemispherical, shortly acuminate. 



Fruit.— Shortly pedicellate, hemispherical to 

 slightly pear-shaped; rim thick, convex, 

 having a groove below the edge ; valves 

 generahy four, exserted,. under 1 line long; 

 2 lines in diameter and 2 to 3 lines long. 



The fruits are much like a small E. viminalis or E. 

 Bridgesiana, but are quite different from those of 

 E. Stuartiana, which hare a sloping rim. 



Habitat. — Colombo, Towrang, New South Wales. 



REMARKS. — The herbarium material of this species is so similar to that ot E. Bridgesiana that on a first 

 examination it might be included with that species. Field observations, however, have shown that the two trees 

 are quite distinct and should not be included under the same name. E. Bridgesiana is known vernacularlv as 

 " Apple ' and " Woollybutt," but this tree as " Apple-top Box." The bark is that of a true " Box," but the 

 timber is quite unlike that of a " Box." The bark has not an essential oil as obtains in E. Bridgesiar, - 

 Although it lias a regular light-coloured grey " Box " bark, yet the appearance ot the foliage in the held is more 

 like that of an " Apple-tree " [Angophora), hence the local name of " Apple-top Box." 



ESSENTIAL OIL. — Leaves and terminal branchlets for distillation were 

 obtained from Towrang, N.S.W., in October, 1900. The yield of oil was 0-19 

 per cent. The crude oil was red in colour, and contained rather a large amount 

 of phellandrene, to which constituent the laevo-rotation of the oil was due. Pinene 

 was determined, and also cineol. It also contained a somewhat large amount 



