19 



ESSENTIAL OIL. Leaves and terminal branchlets foi distillation wer< 



received from Rydal, N.S.W., in October, i i. rhe yield oi oil wa 0-26 per 



cent. 



The crude oil was "l a light amber colour, and had a terpene-like odoui 

 with little resemblance to ordinarj Eucalyptus oil. Ii consisted principally of 

 dextro-rotatorj pinene, together with the sesqu ne. Phellandrene was no1 



detected, and cineol was only presenl in verj small amount. I iccur in 



some quantity, the principal one being geranyl acetati 



The oil of this species has a resemblance to thai ol E. acacicejormis. 



The crude oil had specific gravity a1 [5 C. 0-8854; rotation a- + 247 ; 

 rtdex a1 20 = 1-4717. and was insoluble in to vo] per cent, 



alcohol. The saponification numbei for the esters and frei acid was 44, while 

 in the cold with two hours' contact it wa The secondary odour of the cold 



saponified oil suggested geraniol. 



On rectification 1 per cent, distilled below 157 C. (corr.). Between 

 157 1 7 j , 62 per cent, distilled; between [72 r.94 . to pei cent, came over and 

 between [94 276 , 20 per cent, distilled. IThesi fractions gave the following 

 results : — ■ 



First fraction, sp. gr. at 15 C. = 0-8606; rotation a D + 30-5 : refractive 



index at 20 ' = 1*4665. 

 ond ,, „ ,, = 0-8904; rotation a, f- 4-4 : refractive 



index a1 jo = 1-4747. 

 Third ,, ,, ,, = 0-9388; rotation too dark; tive 



index at 20° = 1-4915. 

 The cineol was determined by the resorcinol method in the portion 

 distilling below 194°. When calculated for the crude oil the result was 8 per 1 



16. Eucalyptus carnea. 



(R.T.B., i'o"-. Linn. Soc., N.S.W .. C906, p. 



Systematic. A tall tree, attaining a height oi COO feet, with a dark- 

 coloured, stringy hark, persistent to the branchlets. Abnormal leaves opposite, 

 sessile, cordate, ovate, acuminate, thin, pale-coloured on the under side, shining, 

 up to 6 inches long and 3 inches broad. Normal Leaves lanceolate falcate, up 

 to 9 inches long and Erom 1 to nearly 3 inches wide, often verj oblique at the 

 base especiallj the larger leavi oriaceous, pale-coloured on both sides; 

 venation less pronounced than in abnormal leaves, intramarginal vein well 

 removed from the edge, Literal veins distinct, oblique and spreading, [nfloi 

 usually in terminal panicle-, but sometimes in axillary umbels. Calyx tube 

 turbinate, gradually tapering into the flattened pedicel ; open ulum hemisphi 1 

 shortly acuminate. 



Fruit. Hemispherical; rim thin; valves sunken; 

 about 3 line- in diametei 



its morphologically much ■ 

 E. ai in' Hi' iii li 



Habitat. Ri ' t, New So 



