a : 
sa siete SCIENTIFIC NOTES ON ESSENTIAL OILS. 17 
About 0,4 p.c. of camphene; 0,4 p.c. phellandrene; 0,2 p.c. terpene alcohol; 6 p.c. 
a-costene; 6 p.c. S-costene; 20 p.c. aplotaxene; 7 p.c. costol; 15 p.c. dihydrocosto- 
lactone; 11 p.c. costolactone, and 14 p.c. costic acid. 
Cubeb Oil. For the new British Pharmacopoeia, C. A. Hill and J. C. Umney*) had 
made the suggestion that at least 80 p.c. of cubeb oil should pass over between 
250 and 280°. . 
From more recent observations, however, which Umney made in collaboration 
with E. T. Brewis”), it was found that this requirement could not be upheld. In their 
opinion it is sufficient if 60 to 65 p.c. of the oil are required to pass over within the 
limits of temperature indicated. Unfortunately, once again an important point is not 
touched upon at all, viz., the character of the distilling flask. 
At the same time the two authors give the properties of 7 cubeb oils produced 
in the factory of Stafford Allen & Sons, Ltd. With six of the oils the values observed 
were found to be within the following figures: do50 0,919 to 0,924; ap) — 27,2 to — 29,49; 
Np»so 1,4928 to 1,4950; in the course of distillation 14 to 32 p.c. passed over below 
250°, and 64 to 80 p.c. between 250 and 280°. The seventh oil differed a little in its 
density and boiling point: des0 0,927; @p — 27,29; npss0 1,4950; 50 p.c. passed over below 
250°, and 44 p.c. between 250 and 280°. 
Oil of Daniella thurifera. From the resin of Daniella thurifera, Benn. (N. O. Legu- 
minosae)*) Originating from Togo, W. Lenz*) obtained 23 p.c. of an oil which contained 
no phenols, and only traces of aldehydic constituents. 52 p.c. of the oil boiled from 
120 to 290°. On passing in hydrogen chloride, the fractions of a b. p. 259 to 270° 
{dopo 0,9850; &p 67,83° [+ 2]) yielded cadinene hydrochloride (m.p. 119°; [@]p — 39,82°), 
from which the author infers the presence of cadinene in the original oil. The oil also 
contained a bluish green high-boiling fraction of the density 0,9845 (20°); ap 5,98° (+ 2). 
From a sample of the balsam placed at our disposal by the author some 
considerable time back, we obtained upon distillation with steam 58 p.c. of a colourless 
_ oil of the following constants: dis0 0,9216; a) —5° 43’; npooo 1,50670; acid v. 0; ester v. 1,9; 
turbidly soluble in 10 volumes of 95p.c. alcohol. Under a pressure of 3 to 4mm. 
74 p.c. of the oil passed over between 95 and 108°, whereas under atmospheric 
pressure it began to boil at 268°, but in the latter case distillation could not be 
carried through in consequence of decomposition, water being split off. Under the 
influence of hydrogen chloride gas we also obtained considerable amounts of cadinene 
dihydrochloride, m. p. 118°. 
Oil of Daviesia latifolia. According to F. B. Power and A. H. Salway®), the leaves 
and twigs of the Australian leguminosa Daviesia latifolia, R. Br. contain traces of a 
volatile oil in which benzoic acid (m. p. 121°) is present. After elimination of the 
benzoic acid the oil boiled from 200 to 220°. 
Elecampane Oil. The properties of an elecampane oil of our own drawing were 
communicated in our Report of April 1912, page 61. It was a distillate showing a 
full percentage of alantolactone, being a solid mass in consequence. Lately we again 
had an opportunity of analysing two distillates of our own manufacture the alantol- 
1) Chemist and Druggist 76 (1910), 271; Report April 1910, 135. — *) Perfum. Record 5 (1910), 256. — 
*) Comp. Report April 1911, 145. — *) Berl. Berichte 47 (1914), 1989. — 5) Journ. chem. Soc. 105 (1914), 767. 
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