132 



acetylation it was 36-3, and 28-5 in the cold with 2 hours' contact. This 

 result represents 8 per cent, of free alcohols calculated for the C IO H l8 O molecule. 

 On rectification, i per cent, distilled below 161 C. (corr.). Between 161- 

 171, 30 per cent, distilled; between 171-193, 54 per cent, came over; between 

 193-225, 5 per cent, distilled, and between 225-267, 8 per cent. These fractions 

 gave the following results : 



First fraction, sp. gr. at 15 C. = 0-8999 ; rotation a D + 15-6 ; refractive 



index at 20 = 1-4604. 

 Second ,, = 0-9137; rotation D + 7-5; refractive index 



at 20 = 1-4617. 

 Third ,, ,, = 0-9305; rotation D 5-0; refractive index 



at 20 = 1-4694. 

 Fourth ,, ,, = 0-9450; rotation too dark; refractive index 



at 20 = 1-4925. 



The cineol was determined by the resorcinol method in the portion dis- 

 tilling below 193 C. ; when calculated for the original oil, the result was 55 per 

 cent. By the phosphoric acid method it was 50 per cent., thus indicating but 

 a small proportion of absorbable bodies, other than cineol, in the oU distilling 

 below 193. 



70. Eucalyptus Dalrympleana. 



(J.H.M., in Fo.-est Flora, N.S.W., Vol. VII, pt. 4.) 

 A Mountain or White Gum. 



Systematic. A large tree up to 30 feet in girth, with a smooth bark, white 

 in spring, and later becoming red, the whole trunk having a blotched appearance. 

 Abnormal leaves scabrous when young, cordate to orbicular or ovate, stem 

 clasping, sessile or very shortly petiolate, often mucronate, averaging 2 inches 

 long and 2 inches broad. Normal leaves lanceolate, sometimes falcate, usually 

 over 4 inches long and 9 lines wide ; venation fairly prominent, intramarginal 

 vein not far removed from the edge, lateral veins distant, more or less parallel, 

 inclined at an angle of 35-40 to the mid-rib. Peduncles usually axillary, some- 

 what flattened, 3 lines long, each with an umbel of three flowers. Buds shortly 

 pedicellate; calyx tube cylindroid, i| lines long; operculum semi-ovoid, as long 

 or slightly longer than the tube. 



Fruit. Semi-ovoid, almost sessile ; rim domed; 

 valves thick, well exserted ; 3 lines long and 

 3 lines in diameter. 



They are uncommonly like E. viminalis, so that these 

 two cannot be separated by the fruit alone. 



Habitat. Yarrangobilly, Batlow, Tumbarumba and moun- 

 tainous country of south-east New South Wales; 

 probably extending into Gippsland, Victoria. 



