with a marginal one somewhat removed from thi I ds are fairlj 



plentiful, rhe flowers are nol numerous and occur in axillarj peduncles, the 

 calyx being elongated, and the operculum shortly acumin; 



Fruit. I in shaped i ontrai ted a1 top with 

 narrow g] i u>\ e, .it outer ill-, ol .1 count 

 sunk run ; valves no1 exserted ami run- 

 ning vertical^ from the base ol the run; 

 5 lines long and as bro: 



The smaller fruit ery similar to those of the 



Eastern Coastal species, E. pilulari 



Habitat. Western Australia. 



ESSENTIAL OIL. rhe oil ol this species was distilled l>> Mi. I'. R li 

 St. [ohn, in January, 1:917, from trees cultivated in Melbourne, Victoria, ami 

 forwarded to the Technological Museum for investigation. The yield ol oil was 

 equal to 11 pei cent, rhe crude oil was of a lemon-yellow colour, ami had a 

 terpene-like odour, while that ol volatile aldehydes was very pronounced. The 

 principal constituent was dextro-rotatory pinene. Cineol was only present in 

 very small amount. Esters were determined, the principal being butyl-butyrate 

 in the lower boiling traction, terpinyl-acetate ami geranyl-acetate in the higher. 

 Free geraniol and free terpineol were also present. 



The crude oil had specific gravity at 15 <". ■ + 



20-5°; refractive index a1 20 r. -4671, and required | volumes pet nt. 



alcohol to lorm a clear sohition. The saponification number for the esters ind 

 free acid was 507. In the cold with two hours' contact it was 11.;. Alt' 1 

 acetylation the saponification number was 101*5. 



On rectification no less than 2 per cent, came ovei below r.22 C. (con 

 Between 122 172', \y per cent, distilled ; between 172 183 , 20 per cent, distilled 

 leaving a residue of ;i per cent, boiling above 183 1 These fractions am! 

 residue gaA e the Eollowing results : 



First large fraction, sp. gr. at 15° C. -0-8725: rotation a r 24-6 refra< 



tive index at 20 = 1-4626. 

 v, C ond ,, ,, ,, 0-8878 : rotation t ■ 1 v - 1 . refrac- 



tive ind. \ i- 1698 



Residue .. ,, =0-9342; rotation >. + [6-2 ; refrai 



th 1 .u 20 i- 17 



The saponification number lor the first fraction was [6-4; lor the 

 second, ji«4; and for the residue [04-2. the ester in the firsl fraction was 

 mostbj butyl-butyrate. 



The volatile acids oi the several esters wet rmined in the usual w 



by saponification formation oi the barium salt, and decomposing this with 

 sulphuric acid. The barium sail gave 88-12 pei cent, barium sulphate, equal 

 to 80-2 pei cent, barium acetate, and 19-8 per cent, barium butyrate. The 

 odour ol bun rie acid was pronounced dm on. 



\ portion ol the crude oil was di>tilled. and all below too I removed, 

 this equalled 68 pei cent, rhe higher boiling portion had saponification number 

 129-7, while in the cold with two hour-' contact i1 was ;p rhe whole was 

 then saponified by boiling with alcoholic potash, the aqueous portion separated, 

 an d the oil thoroughly washed. It was then distilled at to millimetres pressure- 

 m0 s1 oi it being obtained between 98 105 C. On again redistilling at the same 



