— 58 — 



Oil of Cymbopogon coloratus. According to a communication 

 which has appeared in a contemporary 1 ) an oil with an odour resembling 

 that of a mixture of lemongrass oil and Java citronella oil has been 

 obtained in the Fiji Islands by distillation of Cymbopogon coloratus. The 

 sp. gr. of this oil was 0,920 and it contained 42% of constituents which 

 reacted with bisulphite, as well as 15°/ geraniol. The oil, of which the 

 percentage yield is not indicated, made no clear solution with 70°/ alcohol. 



In the Fiji-Islands the oil is known as "lemongrass oil". 



Oil of Cymbopogon Iwarancusa(?). The Imperial Institute in London 2 ) 

 gives brief particulars of an oil from the Soudan which is probably derived 

 from Cymbopogon Iwarancusa 2 ). The properties of the distillate somewhat 

 resemble those of pennyroyal oil. Its principal constituent is a ketone 

 possessing a pulegone-like odour. 



Oil of Cymbopogon polyneuros, see p. 59. 



Cymbopogon Oils, also see Andropogon Oils. 



Cypress Oil. The demand for this oil has throughout been exceedingly 

 strong. We have at our disposal an excellent quality, the bulk of which 

 was distilled last autumn in our factory at Barreme, and we have therefore 

 been able to supply, without delay, all the requirements during the 

 whooping cough season. Notwithstanding the numerous specialities 

 which have recently been brought out as specifics against this common 

 complaint of childhood, our cypress oil has maintained its favoured 

 position, and the first authorities continue to speak of its efficacy as 

 absolutely astonishing. 



Oil of Dacrydium Franklinii, Hook. 4 ) The habitat of this conifer 

 is restricted to Tasmania, where it is known as „Huon Pine". The leaves 

 yielded 0,5°/ essential oil: d^§ 0,8667, « D +20,5°, n D25 o 1,4815, soluble 

 in equal vols, and more of absolute alcohol. The oil was carefully and 

 thoroughly fractionated, When it was found that it probably contained 

 1-ec-pinene (m. p. of the nitrosochloride 110 to 111°) and d-limonene (tetra- 

 bromide, m. p. 104°). The principal constituent of the oil is a hitherto 

 unknown terpene, to which the authors have given the name of "dacry- 

 dene". This dacrydene boils at 165 to 166° (corr.) (d^o 0,8524, « D + 12,3°; 

 11D220 1,4749) and yields a nitrosochloride, m. p. 120 to 121 °. Analysis gave 

 the formula C 10 H 16 : found C 88,14%, H ll,65°/ ; calc. for C 88,24%, 

 H 11,76%. Upon brominating, during which hydrobromic acid was libera- 



*) Perfum. and Essent. Oil Record 1 (1911), 232. Comp. also Bull. Imp. Inst. 8 (1910), 144. 



2 ) Bull. Imp. Inst. 8 (1910), 145. 



3 ) Comp. Report April 1907, 31. 



4 ) Baker and Smith, A Research on the Pines of Australia, Sydney 1910, p. 397, Also 

 comp. the present Report p. 148. 



