YLANG-YLANG. ia 
of silver contains 46°6 of metal; hence the identity of the crystals 
with benzoate of silver was proved. For the separation of the 
alcoholic constituent, which is present in the form of an apparently 
inconsiderable quantity of benzoic ether, far more Ylang oil would 
have been required than was at the operator’s disposal. 
“« Besides a benzoic ether, and probably a phenol, the oil gives 
indications of the presence of an aldehyde or ketone, since, on 
shaking it with acid sodium sulphite, the formation of a very small 
amount of crystals was observed. Like the benzoic acid, the acetic 
acid is no doubt present in Cananga oil in the form of a compound 
ether.” 
The name Cananga is frequently used in Amboyna to designate 
the Unona tripetala, DeC.* (Unona tripetaloidea, Dunal + ; Uvaria 
tripetala, Lam.t). 
This is a tree of about 40 feet high, native of Amboyna in plains 
and on hills. In habit it resembles the Michelia Champaca. Its 
leaves are lanceolate, the upper surface wrinkled, the under surface 
tomentose ; the flowers are on solitary peduncles, sweet-scented and 
greenish. The fruit is about the size of a plum. ‘The carpels are 
stipulate, ovate, somewhat triquetrous, granulated, and 3-seeded. 
The name of this tree in the Malay language is Cananga outin. 
The word outa seems to mean wild or uncultivated, as it is also 
applied to an uncultivated sort of patchouli to distinguish it from 
the cultivated sort designated wangi; and the word owfin in 
ourang-outan (a monkey) means a “ wild” man. 
The Unona hamata of Roxburgh and Unona uncinata, Lamarck, 
are referred to Artabotrys odoratissima; and Unona suaveolens, 
Blume, to Artabotrys suaveolens. 
The Uvaria dulcis is a large woody climber found in the Moluccas 
and Tenasserim. It is described by Dunal§. Its young branches 
are densely tomentose. I.eaves oval or oblong, puberulous above, 
woolly beneath, 3 to 5 inches long, 14 to 24 inches broad, petiole 
; to finch. Flowers 2 inches diameter, subumbellate, greenish, 
odorous; peduncle ¢ to inch. The petals are oblong, subacute, 
tomentose on both sides. 
* Syst. 1. p. 490. 
+ Mon. des Anon. p. 104; Rumph. Amb. ii. p. 197, tab. 66. f. 1. 
} Dict. i. p. 597. 
§ Mon. des Anon. p. 90, tab. 13; also DeC. Prodr. i. p. 88; Hooker and 
Thomson, Flor. Ind. p. 88; and Blume, Flor. Jav., Anon. tab. 3. 
