37 



" Timber. — A very hard, close-grained, interlocked, pale brown coloured timber, difficult to 

 distinguish from E. pUularis ( Blackbutt), and no doubt of equal excellence. It is durable in the ground, 

 and free from gum-veins as a rule. Suitable for bridge-decking, wood-blocking, posts, rails, and general 

 building purposes requiring a hard, durable timber. In the case of " Red " and " White " Stringybark, the 

 bark soon becomes detached after the timber is felled, but in this species the bark remains attached until 

 the timber decays. 



" Kino. — The exudation belongs to the ruby group, consisting principally of a tannic acid and water. 

 Contains neither gum, like the kinos of the " Ironbarks," nor eudesmin or aromadendrin, like the " Boxes." 

 In constitution it is practically identical with that of E. dextropinea, described below. 



" Oil. — A deep reddish colour, and it could not be distinguished from that of E. dextropinea, except 

 by chemical analysis. The leaves gave a yield of 0'66 per cent., and it consists very largely of lsvo-rotatory 

 pinene, chemically identical with the lrevo-rotatory pinene obtained from trees of the Natural Order 

 Conifera?. 



" For the chemistry of this pinene, see paper by my colleague, Mr. H. G. Smith, Proc. Roy. Soc, 

 y.S.W., Oct., 1898. 



"Hal). — Nullo Mountain, Rylstone (J. Dawson), Never Never Mountain, Rylstone (R.T.B.), Gulf 

 Road, Rylstone (R.T.B.). 



" This tree has always been regarded by local residents of the Rylstone district as quite distinct from 

 any of the other " Stringybark " trees in the locality, owing to its peculiar bark and tough wood, and the 

 glinting of the leaves in the sun, making them appear glaucous, and hence its vernacular name of " Silver-Top 

 Stringybark." When seen growing in its native habitat it somewhat resembles E. macrorrhyncha, F.v.M., 

 and the mature fruits, with the domed rim and well-exserted valves, might easily lead one to diagnose it 

 as that species ; but it differs therefrom in its hard, durable timber, and also from it and cognate species 

 by its characteristic bark, as well as in its hemispherical operculum, terete calyx-tube, in its oblique leaves, 

 and the physical constituents of its leaves and oil. Except for its domed fruits, there is little to connect 

 it botanically with E, macrorrhyncha, F.v.M., from the leaves of which is extracted (1) the dye myrti- 

 colarin ; (2) an oil, very rich in the new solid camphor or stearoptene eudesmol, and also cineol. These 

 bodies are entirely absent from the leaves of this particular eucalypt, and the oil is almost entirely 

 composed of lfevo-rotatory pinene. 



" The presence of pinene of course allies it with the other species described in this paper, whilst 

 the optical characters remove it from that species. It differs from E. capilellata and E. eugenioides in the 

 shape of its fruits, its bark, buds, and leaves, and the chemical constituents of its oil, but yet it is a 

 " Stringybark," and the timber shows affinities with that group of eucalypts, while the hemispherical base 

 and size of the fruits are not unlike those of E. capilellata. In botanical sequence it may be placed after 

 E. capilellata. 



" It is distinguishable from E. obliqua by its fruits and timber as well as its oil, but resembles that 

 species somewhat in the shape of its leaves and buds. It differs from E. dextropinea of this paper in its 

 fruits never having a countersunk rim, the superior quality of its timber, and the presence of a dextro- 

 rotatory pinene in its essential oil. The leaves and buds of the two are identical. The oblique leaves and 

 immature fruits led me at one time to consider this species as E. obliqua, L'Her., and I so recorded it." 

 (Proc. Linn. Soc, N.S.W., xxiii, 414.) 



