304 ON SOME NEW SPECIES OF EUCALYPTUS, 



Timber. — -A hard, close-grained timber, full of shakes and gum 

 veins, and apparently of little economic value. It possesses none 

 of the good qualities of E. amygdalina, Labill., which is fissile, 

 soft and easily worked. 



Oil. — Leaves obtained from Crookwell, New South Wales, 16th 

 June, 1900. Average yield of oil for three distillations = 1-48 

 per cent. The crude oil is almost colourless. It contains much 

 phellandrene, over 20 per cent, eucalyptol, and citral is probably 

 present in the higher boiling portions, the lemon odour being very 

 marked and the aldehyde reactions readily obtained The con- 

 stituent having an odour of peppermint, present in the oil of 

 E. coriacea, appears to be absent in this oil, and it thus approaches 

 more closely the oil of E. amygdalina. Less than 2 per cent, 

 distilled below 173° C; between 173° C. and 183° C. 78 per cent, 

 distilled (corrected). 



Specific gravity crude oil at 15° C. = 0'886. 



Specific gravity fraction 173-183° C. at 15° C. =0-8792. 



Specific rotation crude oil = [a] jy — 33-92°. 



Specific rotation first fraction = [a] j) — 37-76°. 



Eucalyptol in fraction 173-182° C. = 26 per cent. (H. G. Smith). 



This tree is known locally as "Silver Top Messmate," "Pepper- 

 mint," and " Messmate," but in connection with this species it is 

 not proposed to perpetuate the two latter vernacular names, which 

 should be restricted to E. dives, Schau., and E. amygdalina, 

 Labill., respectively. 



"Messmate," E. amygdalina, has a somewhat similar bark, but 

 its timber is quite different from this species. It is called "Silver 

 Top " from the glinting of the shining leaves in the sunlight, which 

 causes them to appear silvery. For a similar reason E. Icevopinea, 

 R.T.B., is called "Silver Top Stringybark." 



This tree, like E. dives, Schau., E. radiata, Sieb., and other 

 species, has probably been confounded with E. amygdalina, 

 Labill., when determined on herbarium material alone. 



