55 



edge, lateral veins fairlj distil Petiole varying fron 



Umbels axillary, bearing about five to seven llowi dks flattened, undei i 



inch long, stalklel varying from ; to 8 lines long; operculum hemispherical, 



shortly acuminate. Calyx n ilai Stamens .ill fertile, inflexed in the 



1'uil ; anthers divergenl from the very promin which surmounts 



them. 



Fruii. Hemisphere al, pedicellate ; rim either slightly 

 inclined outwards, tru [uite 



domed; incised ring jusl below the lower 

 edge ; vah es exserted : varying in diameter 

 in 'in ; io 6 lines. 



The domed fruit form resembles 

 E. macrorhym h 



Habitat. On basaltii outcrops in the Coastal MountainRai 



Nulla Mountain, Rylstone, Nevei Nevei Mountain, 

 Gulf Road, Bla< k Mountain, ret 

 Armidale, New South Wales; ami Lilydale, Yarra 

 J urn don, Vi< toria. 



REMARKS. i as always been regarded •■ quite 



distinct from anj ingybark " trees in the ] to its peculiar bark ana 



in the sun, which ma ippeai glaucous, and hem cular name 



oi "Silver-top Stringybark." '>'■■ a growing in its native habitat, it son* i \crorhyncha, 



F.v.M., and tlie mature fruits with the domed rim and w< might perhaps lead one to 



i: am which it differs principally in its hard, durable timber, an I the bark in its 



operculum, calyx tube, oblique leaves, and in the chemical I \ccpt for the domed fruits, there 



is little to conned it botanically with /.'. macrorkyncka, F.v.M., a 



myrticolorin, (j) an oil, rich in the stearoptene eudesmol, and also cineol. I ui bodies are absent from the- leaves 

 of this parti nd the oil is almost entirely composed of laevo-rotatorj pineni It differs from 



; l B., in the shape of its fruits, the superior quality of its timber, and thi iceofal otatory 



pinene in it> essential oil. From an economic point of view the confounding of this tree with I hyiicha, 



I v.M., would be fatal to the establishment of an industry lor the ts for which each spei 



suitable. 



ESSENTIAL OIL. Leaves and terminal branchlets foi distillation were 

 obtained from Nulla Mountain, Rylstone, N.S.W., in August, 1898. The yield 

 ni oil was o-66 percent. The crude nil was red in colour and had a turpenl 

 like odour. Phellandrene was absent, and cineol onl} present in small amount, 

 about 8 or io per cent. The oil consisted \< elj "I pinene, which was 



highly l*vo-rotatory, and it contained a smallei amount oi esters than were 

 present in tin- oil ol E. dextropinea. 



The crude oil had specifii gravity at 15 C. = 0-8755; rotation « D 

 37-8°; refractive index al 20 ^4704, and was scarcely soluble in 10 volumes 

 80 per cent, alcohol. The saponification numbei foi the esters and fire acid 

 was 7-0. 



On rectification 1 per cent, distilled below 157 C. corr. . Betwi 

 157-164 , 60 percent, distilled; and between \>>\ 172°, 28 pi came over. 



Tin-'' tractions gave the following results:— 



Firsl fraction, sp. gr. at 15 C. = 0-8699; rotation |<>-i>6°. 



Second ., „ ,, = 0-87 18; .. ',' v 7.^ • 



The cineol wa presenl in -mall amount, and could not be determined 



quantitatively at that time. 



Foi tlb' Eurthei determination oi the terpene, see the article in thi- work 

 on " Tin- Pinenes "I Eucalyptus < His." 



