C2Q 



flic crude oil had specific, gravity a1 15 C. =0-9285; rotation a B + 6-7° ; 

 refractive index at 20 = 1-4717, and was soluble in i-i volume 70 pei cent. 

 alcohol. ["he saponification number tor the esters and free acid was 4-6, and in 

 the cold with two hours' contact ;■(> 



On rectification 2 per cent, distilled below 172" C. (corr.). Between 

 172-10; . (') per cent, distilled; between [93 2j^ . 9-5 per cent, came over, and 

 between 275-294°, 21 per cent, distilled. These fractions gave the following 

 results : — 



First fraction, sp. gr. at 15° C. = 



1 eti active index 

 1 eh active index 

 1 efractive index 



0-9169 ; rotation a B + 3*75 ; 

 at 20 = 1-4619. 

 Second ,, ,, = 0-9251; rotation » D 4- 3-8°; 



at 20 = 1-4700. 

 Third ,, ,, = 0-9582 ; rotation not taken ; 



at 20 = 1-5030. 

 The cineol was determined by the resorcinol method in the first fraction ; 

 the result was 56 per cent, when calculated for the crude oil. By the rapid phos 

 phoric acid method it was 46 per cent, when calculated for the crude oil. 



A portion of the oil was acetylated in the usual way; the saponification 

 number had then risen to 67-2, and in the cold with two hours' contact it was 

 19-7. This result indicated that 19 per cent, of eudesmol and 4-4 per cent, of 

 geraniol were present in the free condition. The eudesmol was purified, when 

 it melted at 8o° C, and in chloroform at 24 C, had specific rotation 



[«]o + 33-05°- 



68, Eucalyptus platypus, 



(Hook., Ic. PL t. 849, 1852.) 



Systematic— -A small tree with a smooth bark. Abnormal leaves ovate 

 or obcordate. Normal leaves broadly ovate or orbicular, often crenate, mostly 



under 2 inches long, thick, smooth 

 Peduncles axillary, thick, woody, flat, 

 bearing about five to twelve flowers, 

 turbinate, sometimes ridged, sessile ; 

 and narrower than the calyx tube. 



and 

 up to 



shining 



venation not prominent. 



6 lines broad and 2 inches long; 

 Calyx tube 3 to 4 lines long, narrow 

 operculum conical, obtuse, much longer 



Fruit.— Crowded in heads, semi-ovoid 

 or turbinate, slightly contracted 

 at the orifice, ribbed ; rim thick 

 and slightly convex ; valves often 

 acuminate, exserted ; 6 to 9 lines 

 long, 4 to 7 lines in diameter. 



This clustering of fruit*- occurs <ilso in 

 E. Lehmanni and E. cornuta, but these 

 litter are easily distinguished from this 

 Eucalypt by their elongated valves. 



Habitat. \\> t< in Australia. 



