' I" 



Materia] for distillation was also obtained from the abnormal leaves in 

 order to tesl the value oi the oil from this portion oi the plant ; the leaves were 

 collected a1 Wingello, N.S.W., in February, [901. rhe yield oi oil was t-8 pei 

 cent. In appearance, odour, and constituents, the oil was identical with that 

 obtained from the mature leaves, with the exception that the pinene was a little 

 higher and the cineol a little less in amounl : bu1 even then the oil form< d 

 solution wiili 1 J volumes 70 per cenl alcohol. The specifi* gravity of the 

 crude oil was 0-9133, and the optica] rotation a \ <•■] \\\> saponification 

 number for the esters and free acid was .;. Eudesmol was detected in small 

 amount. It is thus evident thai the oil from the leaves of this species may 

 be profitably distilled, especially as the yield is large foi an oil so rich in ciri 

 In other parts of this work it is demonstrated that plantations oi this -pedes 

 could be utilised with advantage for Eucalyptus oil distillation, so that by 

 systematic cultivation the difficulty of collecting the leaves from mature trees 

 might be avoided 



When the whole of the factors in regard to the oil of this species are taken 

 into consideration, it may be regarded as one of the besl Eucalypts, so far 

 determined, for the production of a rich cineol Eucalyptus oil. The following 

 reasons in support of this statement may be advanced : 



1. The yield of oil from both abnormal and mature leaves is large. 



2. The oil from both abnormal and mature leaves is practically of equal 



value. 



3. The oil is very rich in cineol. 



j. A relative absence of constituents of high-boiling point avoids much loss 

 on rectification. 



5. The comparative absence of esters and objectionable volatile aldehydes 



allows the rectified oil to be of superior quality. 



6. The species lends itself to ready cultivation. 



See also the article on "The Variation in the character of Eucalyptus Oils 

 distilled from trees of differing ages and forms of growth." 



74. Eucalyptus Bridgesiana. 



(R.T.B., Pro. . Linn. Soc, N.S.W., 1898, p. 164, t. V). 

 Apple or Woolly-butt. Butt Butt of Gippsland (A. W. Howitt). 



Systematic. \ tree oi considerable size, grows to a greai height, par- 

 ticularly in loamy soil. Bark whitish grey, wrinkled or tesselated, shorl and 

 brittle in the grain, not fibrous, almost identic al with thai oi the " Boxes," and 

 when Ereshlj cul exhales an aroma similar to the ordinary oil obtained from 

 Eucalyptus leaves. Abnormal leaves in the early stage ovab cordate, and then 

 te-acuminate, petiolate or sessile opposite or alternate. Normal leaves on 

 rather long petioles lanceolate, acuminate, often falcate, varying in length to 

 ovei 1 foot, nol mining, the southern form drying a lighl grej colour, the 

 northern a darkish green; lateral veins either prominent oi faint, spreading, the 



