157 



The cineol was determined by the resorcinol method in the portion boiling 

 between 160-193, and calculated for. the original oil; the result was 61 per 

 cent. By the phosphoric acid method, taken in the crude oil, the result was 

 56 per cent., thus indicating but a small proportion of absorbable constituents, 

 other than cineol, in the portion distilling below 193 C. The alcohol was 

 evidently a high-boiling one, and laevo-rotatory ; it had a distinct cinnamon- 

 like odour. 



The oil at our disposal was not sufficient to enable further work to be done 

 with this alcohol. 



84. Eucalyptus Perriniana. 



(F.v.M.) 



Systematic. A " Mallee " or small tree attaining a diameter of i foot, 

 and sometimes up to 30 feet in height, with a smooth bark. The broad expanded 

 base, from which spring a number of small stems, is very characteristic of this 

 species. Branchlets, terete and glaucous. Leaves also glaucous, variable, both 

 in size and shape, perfoliate, sessile cordate, decussate, opposite or alternate; 

 venation faintly marked, lateral veins oblique, spreading, intramarginal vein well 

 removed from the edge. Flowers in short axillary peduncles mostly, generally 

 in threes, sessile or on a short pedicel. Calyx 2 to 3 lines long, 2 lines in 

 diameter, bell-shaped ; operculum shortly conical, edge overlapping the calyx. 



Fruit. Hemispherical to elongated or cylindrical ; 

 rim thickened, capsule sunk, valves not 

 exserted ; up to 5 lines long and under 3 

 lines in diameter. 



E. vernicosa fruits more resemble this than any other. 



Habitat. Tingiringi Mountain and Snowy Mountains, New 

 South Wales, at an elevation of 5,000 feet ; north 

 eastern Ranges of Victoria; Tasmania. 



REMARKS. The exudation which gives the common name "Cider Gum" to the Tasmanian Eucalyptus, 

 E. Gunnii, is quite wanting in E. Perriniana. In New South Wales it occurs at an elevation of 5,000 feet, and 

 appears there abruptly without transition forms to connect it with any species occurring on lower elevations. It 

 forms on the highest points a dense Mallee scrub, i.e., small trees up to 4 inches in diameter, springing from a large 

 common root-stock, to the number of six or even more trees. This large root stock is present also when the trees 

 grow singly and to proper tree size, up to i foot in diameter. The material of E. Perriniana from Tasmania, 

 again illustrates the constancy of species, for the trees in that Island and on the mainland are identical and show 

 no gradation to E. Gunnii in any way. 



Rf the Authorship of the species.- -In our first edition, we gave a description, and the authorship of this 

 species to F.v.M., but later found that Mueller had not published the name or a description, and in our paper on 

 Tasmanian Eucalypts we give a full description, and so put our names after it, not being aware that it had been 

 previously described. Ewart, however (Proc. Roy. Soc., Victoria, vol. 26, p. 3), states that the authorship really 

 belongs to Mr. L. Rodway, who was the first to publish the name and a " not complete description " (Maiden, 

 Crit. Rev , vol. III., p. 103). As we now understand that Mr. Rodway is agreeable to let Mueller's name stand 

 with the species, we forego any claim as the authors 



ESSENTIAL OIL. -Material for distillation was collected at Strick- 

 land, Tasmania, in July ; 1912. The yield of oil was i per cent. The crude 

 oil was reddish in colour, but this colour was readily removed, when it had a 

 light amber tint. It contained a considerable amount of cineol. Pinene was 

 present in rather a large quantity for a rich cineol oil, and phellandrene was 



