86 



ih. ii the cineol had perhaps increased a little. The crude oil and traction gave 

 the following results. 88 pei cent, ol the oil distilled below 190° C. :— 



Crude oil, sp. gr. at 15 C. = 0-8813; rotation •>,. 0-2°; refractive index 



al 20 = i- j.80 ;. 



Fraction ,, „ = 08771; rotation a E 0-5°; refractive index 



al 20 = 1-4790. 



I In' cineol was determined by the resorcino] method in the redistilled portion, 

 .Mid calculated Eor the crude oil ; the result was zz per cent. 



The cymene was determined in the portion distilling below 190 C. The 

 cineol was firsl removed by combining it with phosphoric acid, afterwards shaking 

 the uncombined oil with 50 per cent, resorcinol. It was then washed, dried 

 ;u\(\ distilled, the required fraction being separated. This had specific gravity 

 at 15 C. = 0-8632; rotation nil; refractive index at 20 — 1-4835. A portion 

 was oxidised by potassium permanganate in the usual way. The finally prepared 

 acid melted at 155-156 C, thus indicating p-oxyisopropylbenzoic acid, the 

 oxidation product of p-cymene. 



39. Eucalyptus paludosa* 



(K T.B., Proc. Linn. Soc, N.S.W., 1898, p. 167, t. VI.) 

 Yellow Gum, Swamp or Flooded Gum, 



Systematic. — A tree from 60 to 100 feet high, with a diameter from 2 to 3 

 feet. Bark brown at the butt, bluish-white on the trunk and main branches, 

 and yellow on the smaller branches and limbs, decorticating into long ribbons 

 of 30 feet or more, suspended from the forks and trunks of the trees. The lower 

 young leaves opposite, sessile ovate-acuminate, rarely cordate ; the upper ones 

 petiolate, irregularly opposite, lanceolate, coriaceous, often shining, and of a 

 yellowish-green on both sides ; venation distinct. Normal leaves lanceolate-acumi- 

 nate, varying in length up to 8 or 9 inches, coriaceous, slightly shining on both 

 sides, drying a yellowish tinge ; lateral veins oblique, fairly numerous and 

 equally prominent on both sides, but in some instances scarcely visible, the 

 intramarginal vein removed from the edge in the broader leaves, but closer in 

 the narrower ones. Peduncles axillary, under \ inch long, flattened, with seven 

 to ten sessile flowers. Calyx tube 3 lines long; operculum conical, shortly 

 acuminate, much shorter than the calyx tube. 



Fruit.- Fruit shortly pedicellate, conical, trun- 

 cate, with a flange just below the rim, three 

 or four celled ; valves not exserted ; under 

 5 lines in diameter and about 4 lines in 

 length. 



Care is required not to confound them with those of E. 

 camphora, <i smaller fruit with valves exserted, o> 

 E. acervula. 



Habitat. — Coasl District (southern half), New South Wales ; 

 Victoria. 



REMARKS. — The systematic j:o-ition of this sp< i ate] dealt with in our paper on Euc, Tas. Roy. 



Sdc, 1912. in addition In remarks given in our Euc. ami their Ess. Oils, ist Edit. 



