— 24 — 
i8o gm. of this oil were first of all extracted repeatedly at a low 
temperature with one per cent, soda liquor, and the lye saturated with car- 
bonic acid. The phenols separated off (2 1 gm.), consisted chiefly of methyl 
ester of salicylic acid, boiling point 224° to 226°; d^^o = 1,1770; 
in addition to this, other higher and lower boiling fractions were obtained. 
When they were saponified with 10 ^/q aqueous potash liquor, a gas 
with a trimethylamine-like odour was evolved, which coloured litmus 
blue, and on saturating the lye with carbonic acid, a phenol separated 
out. This phenol had the odour of cresol; when treated with ferric 
chloride in alcoholic solution it acquired a brownish-green colour. As 
the quantity was very small, it was further examined in the following 
manner. The alkaline solution of the phenol, when treated with dimethyl 
sulphate, yielded p-cresol methyl ether with its characteristic odour, and 
this could be converted by oxidation with solution of permanganate 
into anisic acid of the melting point 180°. 
The silver salt of the acid was analysed. 0,1622 gm. yielded after 
combustion 0,0673 gm. Ag; found 41,49^/0 Ag; calculated for anisic 
acid 41,70^/0 Ag. It is therefore most probable that the phenol which 
is present in the essential oil of Acacia Farnesiana in addition to 
methyl ester of salicylic acid already previously detected, is p-cresol. 
Eugenol, which is present in abundant quantity in the oil of Acacia 
Cavenia, could not be detected, and is in any case but a subordinate 
constituent of this oil. 
After removal of the bulk of the phenols and of the ester of 
salicylic acid, by treatment with soda liquor, the oil of acacia blossoms 
distilled at 6 mm pressure from 38° to 140°, chiefly from 70^ to 
120°. In the lowest-boiling portions benzaldehyde was detected. The 
semicarbazide compound of the latter melted at 214°. From the 
fractions boiling between 70° and 80°, at 6 mm, there could be iso- 
lated, by means of phthalic acid anhydride, benzyl alcohol: 23,5 gm., 
boiling point 204° to 206°, at 745 mm; d^^go = 1,0435; «d — 
^020° = 1.53804. 
For further identification the benzyl phthalic ester acid was produced 
from this alcohol. 2 gm. of the latter with 2 gm. phthalic acid anhydride 
and I gm. benzene are heated for 2 hours on the water bath; soda 
solution is then added, and the mixture extracted with ether. When 
sulphuric acid is added to the extracted soda solution, the ester acid 
is precipitated in the form of a rapidly congealing oil After re- 
crystallisation of the substance from benzene, the melting point lies 
at 105° to 106°. When boiled with soda liquor, the benzyl alcohol 
is regenerated. 
Analysis: 
0,1732 g of the substance yielded 0,4436 g COg and 0,0720 g HgO. 
