ti5 



better than the oil oi / globulus, as the yield oi oil is greater. It would be 

 necessary, however, to rectify the oil before use, because the esters and volatile 

 aldehydes are present in some quantity ; bul this remark applies to mos1 oi the 

 richer cineol oils. 



The above samples wen- mixed togethei and stored in the dark. In 

 August, 1919, the oil was again analysed. It had nol altered much in general 

 characters. Ninety per cent, distilled belovi igo C. The crude oil and the 

 rectified portion gave the following results: 



Crude oil.sp.gr. at 15 C. = 0-9264; rotation a D + 6-7 ; refractive index 



,it 20° = I- \(< j.6. 



Rectified portion ,, = 0-9171; rotation a, 4- 7-0 ' ; refractive index 



at 20° = 1-4610 

 The cineol was determined 1>\ the resorcinol method in the rectified portion 

 and calculated for the crude oil; the resull was 7; per cent. By the rapid 

 phosphoric acid method duplicate determinations the result was 62 per cent. 

 when calculated for the crude oil. Terpineol was detected in the rectified portion. 

 Alter acetylation the saponification number was only 21, thus showing that bodio 

 uther than cineol and alcohol- were absorbed by the resorcinol. 



39, Eucalyptus Rodwayu 



(R.T.B. & H.G.S., Roy. So< ., fas., 1912, p. 191, t. II. 1 

 Apple-Scented or Black Gum. 



Systematic. — A large forest tree; often 4 feet in diameter. Bark persistent 

 on stem and branches. Abnormal leaves alternate, oval lanceolate to ovate 

 lanceolate, 3 inches long and about \ inch broad, inclined to falcate, petiolate, 

 almost membraneous; venation not pronounced, lateral veins distinctly oblique 

 at the base and less so towards the apex. Normal leaves lanceolate, some- 

 times falcate, up to 6 inches long, but usually under 4 inches, and \ inch wide. 

 thicker than abnormal leaves; venation not prominent, intramarginal vein 

 slightly removed from the edge. Peduncles axillary or lateral, about 3 lines 

 long, usually bearing under >ix flowers. Calyx tube about 2 lines, short K 

 pedicellate; operculum conical, acuminate. 



Fruit.— Conical or hemispherical, to slightly 

 pyriform; rim convex, sometimes cracked 

 transversely; valves slightrj exserted; %^3 



under 2 linens long and 2 fines in diameter. 



These so resemble those oj E. Macarfhuri and I 

 aggregata that without taking into account other 

 physical characters all these species m%y easily be 

 co) 1 wnded 



Habitat. Deloraim (Maiden and Cambage). Between [ntei 



laki n and I unbridge, at an ele\ ation 1 >1 ;. feet 



and down the western slopes to quit* 1 low 

 altitude; also Strickland I a mania I . G frby) 



