— 145 — 



as hexahydro-p-cymene, — hence the hydrocarbon of the original oil 

 was a dihydrogenated terpene. Treatment of the chloride with magnesium 

 and benzaldehyde led, as in the case of limonene and phellandrene 

 (q. v.) to a hydrocarbon which also possessed two more atoms of 

 hydrogen; in addition, benzoin appeared. 



1 6 kilos of very small, ground, fruit of another species of Pittosporum, 

 P. pendantrum (Blanco) Merrill, which grows chiefly in the lowlands 

 of the Archipelago, gave, when distilled, 210 cc. of oil. The oil had 

 b. p. 153 to 160 and after washing with alkali liquor and distilling 

 over sodium it behaved as follows: b. p. 155 to 160 (chiefly 157 to 

 160 ), d'^ 0,8274, «D3oo (+ ? ) 4°,4°, n D30° 1,4620. This oil, there- 

 fore, seems also to consist mainly of the dihydroterpene of the petroleum 

 nuts described above, without heptane. 



Some time ago Power and Tutin 1 ) described an oil from the fruit 

 of Pittosporum undulatum Vent, which came from South Australia. 



An unknown species of Fagara (Rutacese) from the Northern Pro- 

 vinces yielded upon distillation of the leaves small quantities of an 

 oil containing limonene and probably also a limonene derivative; the 

 latter could also be obtained from limonene by treating it with diluted 

 alkaline solution of sulphate of copper. This combination, on which 

 Bacon proposes to report subsequently, gave a crystalline body with 

 phenylhydrazin. 



A Mexican oil of Fagara octandra L. has been described by us 

 previously 2 ). 



The leaves of Clausena anisum-olens (Blanco) Merrill (Rutacese), a 

 tree which occurs freely in certain districts have a strong odour of 

 anise, as is indicated by the name. Their alcoholic extract has a 

 similar odour, and the leaves are probably used by the natives in the 

 preparation of their brandies known as anisados. Commenting upon 

 the statement by Busse 3 ), who lays special stress upon the heliotrope- 

 odour of the East African species CI. anisata Willd., Bacon points out 

 that this odour is not found in his species of Clausena. 



Bacon has unsuccessfully attempted to obtain an oil, or even a 

 flower water, by distilling a quantity of 40 kilos of the flowers of Plumiei-a 

 acutifolia Poir. ( Apocynaceae) , a tree which is frequently planted in 

 cemeteries, and of which the flowers have a slight but clearly per- 

 ceptible odour of Frangipani. Special experiments showed that the 

 odorous principle was destroyed when heated even to 40 . Extraction 



*) Compare Report October 1906, 65. 



2 ) Report April 1905, 82. 



3 ) Report October 1904, 10 1. 



