BY R. T. BAKER. 689 



and is altogether a much inferior timber to White Mahogany, 

 E. acmenoides — a fact well-known to the timber-getters. 



Oil. — The yield of oil from this species is T55 per cent. No 

 phellandrene was found, but much dextropinene was present. It 

 contains but a minute quantity of eucalyptol. 



The characteristic constituent of the oil from this species is an 

 acetic acid ester. The specific gravity of the crude oil at 15° C. 

 was -8963. 



The specific rotation of the crude oil was [a] jy + 41-5. 



The saponification figure for the ester was 35*8. 



Another consignment of the leaves of this species was received 

 a month later, and gave practically identical results, showing 

 again the constancy of the constituents in the oils of the same 

 species. 



The yield of oil was -169 per cent. ; specific gravity crude 

 oil =-8901. 



Specific rotation crude oil was [a] ^ + 43-8, and the saponifica- 

 tion figure for the ester was 35-3 (H. G. Smith, F.C.S.). 



E. nigra, sp.nov. 



" Black Stringybark." 



(Plate xlvi., fig. 3.) 



A tall tree with a black stringy bark. 



Leaves lanceolate, scarcely falcate, occasionally oblique, mostly 

 under 4 inches long and under 1 inch wide, of a dull green colour; 

 venation only faintly marked on the upper surface, but very 

 distinct on the lower; lateral veins oblique, distant; intramarginal 

 vein removed from the edge. 



Peduncles axillary, short, under 4 lines, bearing a cluster of 

 from 8-12 small flowers. Calyx hemispherical, under 2 lines in 

 diameter, on a short pedicel. Operculum hemispherical, acumi- 

 nate, about 1^ lines long when mature. Ovary flat-topped. 

 Anthers very small, parallel, filaments very slender. 



Fruits about 4 lines in diameter, hemispherical to pilular, rim 

 variable, thin, or truncate and even domed occasionally, valves 

 slightly exserted. 



