— 29 — 



acetic acid, probably butyric acid. The presence of geraniol was proved 

 by oxidising into citral and identifying the latter from the naphtho-cincho- 

 ninic acid compound. Other constituents are : d-«-pinene, dipentene, d- and 

 1-limonene. This species also is richer in 1-limonene in the middle of 

 summer than in winter. 



Oil from the twigs and fruit: This oil (yield 0,164% in December) 

 gave: d§§ 0,8803, « D — 4,5°, n D19 o 1,4752, sap. v. 110,38 - 38,6 °/ ester 

 CH3COOC10H17. The following were detected in the separate fractions: 

 d-borneol (as acetate?), geraniol or geranyl acetate, 1-limonene, dipentene 

 (m. p. of the tetrabromide 118°) and, in the saponification-liquor, acetic 

 acid. The oil from the fruit was also distilled, the yield, in December, 

 being 0,229 °/ . It was practically identical with the oil from the leaves: 

 df§ 0,8797, « D + 2,15°, n D23 o 1,4744, sap. v. (hot) 95,35 = 33,37% ester 

 CH3COOH10H17 (cold 31,18%). Here also, the presence of geraniol was 

 shown by oxidation into citral. 



Oil of Callitris rhomboidea, R. Br. (Syn.: C. (?) cupressiformis , Vent.; 

 C. arenosa, Sweet; Frenela rhomboidea, Endl.; F. Ventenatii, Mirb.; F. arenosa, 

 A. Cunn.; F. triquetra, Spach; F. attenuata, A. Cunn. ; Cupressus australis, 

 Desf. ; Thuja australis, Poir.; T. articulata, Tenore). This species, which 

 is also known as "Cypress Pine", is found in places in Queensland and 

 N.S.Wales. The yield of oil from the leaves in January was 0,0335%: 

 dg| 0,8826, a D — 19,2°, n D25Q 1,4747, ester-content hot 30,43%, cold 29,78°/o, 

 calculated as ester CH 3 COOCi Hi 7 . The crude oil, which was somewhat 

 dark in colour, assumed a bright yellow hue after being shaking with highly 

 diluted soda solution. It was soluble in 7 vols, of 80% alcohol. Only 

 traces of borneol occurred in the oil, and almost the only ester found in 

 it was geranyl acetate. In addition to the above, it was found that «-pi- 

 nene, 1-limonene and dipentene were probably present in it 



Oil of Callitris Tasmanica . Baker et Smith. (Syn. : Frenela rhom- 

 boidea, R. Br. var. Tasmanica, Benth.). This conifer occurs in Tasmania as 

 well as in isolated spots in Victoria and N. S. Wales. In Tasmania it is 

 known as "Oyster Bay Pine". The leaves, when distilled, yielded 0,14% 

 (in March) and 0,208% (in July) of an oil possessing the following pro- 

 perties: di 5 o 0,8976, or d 22 o 0,9036, « D + 1>0°, respectively —5,8°, n D25 o 

 1,4738, respectively n D15Q 1,4739, ester-content hot 59,95 or 62,75 %, cold 

 59,91 or 62,2%, ester CH 3 COOCi H 17 . The oil was insoluble in 10 vols 

 of 70% alcohol, but soluble in its own vol. and more of 80% alcohol. 

 It consists of about 70% of geranyl acetate and free geraniol. When 

 fractionated, it was found to contain the following constituents: d-«-pinene, 

 probably mixed with l-«-pinene, (d~ 0,857; « D + 9,9°, n D240 1,4706; m. p. of 

 the nitrosochloride 107 to 108°, of the benzylamine 122 to 123°), 1-limonene, 

 and dipentene (m. p. of the tetrabromide 118°). Only acetic acid was dis- 

 covered in the saponification liquors. The oil furthermore contains a small pro- 

 portion of phenol, probably identical with that of the oil from Callitris gracilis. 



