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Oil of Callitris Drummondii, Benth. et Hook. fil. (Frenela Drum- 

 tnondii, Parlat.) This species, to which also the term "Cypress Pine" is 

 applied, grows in Western Australia. The oil from the leaves, distilled 

 in June (yield 0,547%) was found to possess the following properties: 

 d 17 o 0,8591, « D + 42,2°/ , n D19 o 1,4739, 1,85% ester CH 3 COOC 10 H 17 . The 

 separate fractions were found to contain: d-«-pinene (m. p. of the nitroso- 

 chloride 108°; m. p. of the nitrosopinene 132°), d-limonene and dipentene; 

 and, as regards esters, borneol and geraniol, probably as acetates. The 

 oil contained over 90% pinene. 



The oil from the fruit is almost identical with that from the leaves: d 15 o 

 0,8663, « D + 45,1 °, n D19Q 1,4798, ester content 2,4%, (calc. as CH 3 COOC 10 H 17 ). 



Oil of Callitris Muelleri, Benth. et Hook fil. (Syn.: Frenela fruti- 

 cosa, A. Cunn.; F. Muelleri, Parlat.) This species of Callitris is known 

 as "Illawarra Pine" and occurs in isolated localities in New South Wales. 

 The fruit carries no essential oil. The oil from the leaves was distilled 

 in September, the yield being 0,103%; d^o 0,8582, « D — 4,7°, n D20 o 1,4749, 

 ester-content 2,76%, calc. as CH 3 COOCi Hi 7 . The oil, which consisted 

 almost entirely of terpenes, was insoluble in 10 vols, of 90% alcohol. 

 The constituents found were: d- and l-«- pinene, d- and 1-limonene. The 

 odour of the oil is somewhat like that of turpentine oil. 



Oil of Callitris oblonga, Rich. (Syn.: C. Gunnii, Hook; Frenela 

 australis, R. Br.; F. Gunnii, Endl. ; F. variabilis, Carr.; F. maerostachya, Gord.) 

 This species is restricted to Tasmania, where it is known as "Native 

 Cypress". The leaves, distilled in June, yielded 0,054 % essential oil with 

 the following properties: di 6 o 0,8735, « D -f-38,l°, n D160 1,4783, ester-content 

 hot 6,05%, cold 5,6%, calculated as CH s COOCioHi 7 : The oil, which is 

 not soluble in 10 vols of 90% alcohol was shown by fractionation to 

 consist chiefly of d-«-pinene (b. p. 155 to 156°, identified from the nitroso- 

 chloride) and probably contains limonene, together with, perhaps, a 

 sesquiterpene or similar compound. 



Oil of Callitris Macleayana, F. v. M. (Syn. : C. Parlatorei, F. v. M. ; 

 Frenela Macleayana, Parlat; Octoclinis Macleayana, F. v. M.; Leichhardtia 

 Macleayana, Shep.) This species is called in New South Wales "Stringy 

 Bark" or "Port Macquarie Pine". The oil from the leaves, distilled in 

 in October, (yield 0,172%) possessed the properties: d§§ 0,8484, a D + 42,5°, 

 n D 2oo 1,4791, ester-content hot 3,5%, cold 3,2%, calc. as CH 3 COOCi Hi 7 . 

 The oil was not soluble in 10 vols, of 90% alcohol. Under careful 

 fractionation the oil was found to contain the following constituents: 

 d-o-pinene (m. p. of the nitrosochloride 107 to 108°), d-limonene (m. p. 

 of the tetrabromide 117 to 118°), dipentene (?) and a hydrocarbon of 

 which the odour and properties pointed to a d-menthene: b. p. 162 to 

 165°, d 22 o 0,837, « D +58,7°, n D22 o 1,4703. In addition the oil appears to 

 contain cadinene (d 220 0,9203; n D22 o 1,5052), for it gave the colour-reaction 

 with chloroform and sulphuric acid, but no dihydrochloride was obtained. 



