etn a ct y Aa ie Aa fea I 
N’ SmI AND 0 orn ‘NOTES on ESSENTIAL OILS. 1" 37 
sie, A aad Sines ina. ece: Palen, a ba deker which in. time fills with 
if such a pockets iS S struck by boring, the oleoresin soon flows out; | frequently, 
Bicesiwood. ae about 30 per cent. of volatile oil. Two eile after rectification with 
~steam in presence of caustic soda, had the properties: — deo 0.8615 and 0.8627, 
“ TeIp»00. — 47, 38 and — 46. 36°, Mpzo0 1 4688 and. 1.4690. About 60 per cent. of the oil 
Firpene ti Caepineae from Oregon balsam oil 
| BS. bh ge ibS to (585A 156 to.157° 
i digo: > 2. =f 0.8598 0.8590 
[“Ip pee Se AE DD ee Se i APD Ohi 
Be AAT OOS ey A670 
: It’ was identified by transformation into J-«-pinonic acid, m. p. 68°; [lyme — 89.18° 
; — (0.03642 g. in 1 ccm. ); m.p. of the semicarbazone 107°. On account of the high optical 
3 ‘Totation the J-a-pinene did-not yield a “nitrosochloride. ee 
Neither camphene nor -pinene were detected in the oil. 
pee} per cent. of the oil boiling between 168 and 178° consisted of /- limonene; m. ape 
a “oF the dihydrochloride 49 to 50°. 
c.-The highest-boiling parts of the oil were free: from “stlethions lated bedies but 
_ baterpineo! (nitrosochloride,. mp: 116°: nitrolpiperidine, m.p. 152°) was present. 
g The oleoresin obtained from the living wood by tapping yielded 22.7 per cent. of ’ 
E il with dyso 0.8594, [@]piso — 22.369. It contained about 17 p.c. J-a-pinene (nitroso- 
_ chloride, m. p. 103°; nitrolpiperidine, m. p. 132,5°). Camphene was not detected, but — 
about 46 per cent. of /-8-pinene, yielding on oxidation nopinic acid, m. P. 1252, | 
; ee: Possibly, atte: oil also contains limonene. | i 
% Origanum Oil. According to a communication of the peta Institute 1). Cyprus 
2 _ exported. in 1915 34 cwts. origanum oil valueing 1.046 ¢ to Great Britain. The ordinary 
i Cyprus oil is stated to originate from Origanum dubium, Boiss. (see below). Later on, 
ES _a further species of Origanwm”) has been described, O. Bevam, Holmes which is also 
2 distilled in Cyprus. The Imperial Institute received of this species, some time ago, a 
; ~ sample of 49 Ibs. of dry flowering herb, without the roots. The plant had a particular, 
- thyme-like odour and gave 1.9 percent. volatile oil with the characters: — ‘dis0 0.951; 
2  &y + 0° 24’; Mp0 1.51; soluble in 2.7 vol. 70 per cent. alcohol; phenols 75 per cent. 
ps pi lieshe oils ane the constants: — dis0 0.958 to 0. 966; ap + 0; Np»s0 1 ot; soluble 
of Pine oil at Opigatenih Bintan’ esnsict of | a nietuire of about 41 parts of cheb and 
E 44 parts of thymol, ordinary Cyprus oil is said to contain merely thymol. For this reason, 
‘the distillation of O. Bevani is not to be recommended, and the prospects therefor do 
“not seem to be great, since this species occurs only scarcely in Cyprus. 
__ We wish to add to above communication that it is rather doubtful whether Cyprus 
- origanum oi! contains merely thymol. According to the statements. of the Chemist to 
_ the Cyprus Government, Francis, the oil, it is true, consists principally of a mixture 
_ of thymol, thymene and cymene; on the other. hand, the phenols of Cyprus oil investi- 
; 8 3) Bull, Imp. Inst. V5 (1917), 305. — 2) EAM, Pslsties: Perfum. Begora 6 (1915), 19; Report October 
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