On rectification, i per ecu;, distilled below 174" ('. (corr.). Between 

 174-193 , 25 per cent, distilled; between 193 245", 14 per rent, came over, and 

 between -'45 283 , 55 per cent, distilled. These fractions gave the following 

 results : 



Firsl fraction, sp. gr. at 15° C. = 0*8728; rotation a D -- 28-6°. 



Second ,, ., .. = o-88i(> ; ,. - 20-4°. 



Third ,. ,, .. = 0-9417; ,, not taken. 



A second distillation gave agreeing results, and on again fractionating the 

 combined higher-boiling portions, only 5 per cent, came over below 260 C. ; 

 between 260-275 , 68 per cent, distilled; this portion had specific gravity at 

 15 C. = 0-943; and optical rotation « D --o-8°. (See also the article dealing 

 with the sesquiterpene in this work.) 



Material of this species was also obtained from Gosford, N.S.W., in 

 December, 1896. In appearance and constituents, this oil differed but little 

 from the Barber's Creek sample, with the exception that pinene was a little more 

 pronounced and the phellandrene correspondingly less ; the amount of cineol was 

 about the same as in the previous sample. 50 per cent, distilled between 255-280° 

 C. ; and this fraction also consisted principally of eudesmol and the sesquiterpene. 

 The ester content was practically the same as in the oil from Barber's Creek. 



Material of this species for distillation was received from Lawson, Blue 

 Mountains, N.S.W., in September, 1919. The yield of oil was 0-65 per cent. In 

 general characters and constituents, the oil differed but little from that distilled 

 in 1898. The exception was that the eudesmol at this time was in the crystallised 

 condition, while in the oil from the Barber's Creek trees it was in the liquid form. 



The crude oil had specific gravity at 15 C. = 0-9065 ; rotation « D -- 5-5° ; 

 refractive index at 20 = 1-4902, and was soluble in 1 volume 80 per cent, alcohol. 

 The saponification number for the esters was 4-4, both by the hot and cold methods. 

 After acetylation it was 86-6 by boiling, and 237 in the cold, with two hours' 

 contact. This result represents 5-4 per cent, calculated as free geraniol, and 

 26 per cent, calculated as eudesmol. The eudesmol was purified, when it had 

 melting point 79-80°, and specific rotation [a] D + 38-43 . 



The cineol was determined by the resorcinol method in the portion boiling 

 below 1 93° ; when calculated for the crude oil the result was 9 per cent. 



The predominance of phellandrene is seen from the rotation figures for 

 the crude oil. Piperitone was not detected. 



132. Eucalyptus Laseroni. 



(R.T.B.. Trnc. Linn. Soc, N.S.W., 1912, p. 585.) 



Systematic. — A small tree, under 40 feet in height, 1 foot in diameter, with 

 a hard stringybark, decorticating in strips from the main branches, which are 

 otherwise smooth. Abnormal leaves ovate-lanceolate, slightly falcate in some 

 cases, petiolate, attenuate, varying in size. Normal leaves lanceolate, alternate, 

 sub-coriaceous, average under 4 inches long and 1 inch wide, occasionally shining; 

 venation distinctly marked (the basal lateral veins sometimes running the whole 



