2 1 
The anisic aldehyde regenerated from the semicarbazone yielded 
on oxidation anisic acid. Apart from anisic aldehyde, which up to 
now had not yet been met with in any flower oil^), no other alde- 
hydes and ketones could be detected with certainty with the available 
material, but the pronounced violet odour of the higher fractions points 
to the presence in the oil of ionone or irone, or a similar violet-ketone. 
This is all the more probable, as we have made the same observation 
with the essential oil of Acacia farnesiana. We are now engaged on 
a further examination of this ketone. 
The bulk of the remaining oil, after separating the anisic aldehyde, 
distilled from 245° to 255°, and proved to be eugenol methyl ether. 
On oxidation with potassium permanganate it yielded veratric acid of 
the melting point 178°. The silver salt of the latter was analysed: 
0,2692 g contained 0,1004 g Ag = 37j30 per cent. Ag 
Calculated for C^Hc^O^Ag =37,37 „ „ „ 
From the methoxyl-determination of the acid the following value 
can be calculated: 
0,1582 g acid yielded 0,3904 g Ag I = 32,55 per cent. OCH3 
Calculated for CqH^qO^ = 34j06 „ „ 
The examination of the essential oil of Acacia cavenia (which is 
still continued) proves therefore that the oil has the following com- 
position: about 50 per cent, phenols, chiefly eugenol; about 8 per cent, 
methyl ester of salicylic acid, and about 42 per cent, non-phenols. 
In the latter the following compounds were detected: 
Benzyl alcohol (about 20 per cent.), geraniol, anisic aldehyde, eugenol 
methyl ether, linalool (?), decylic aldehyde (?), violet-ketone (ionone, 
irone) (?). 
Oil of Chamomile. Both distillates are in stock in fresh quality. 
The blue oil of the common chamomile has remained at the same 
price, whilst the distillate of the Roman chamomile can be quoted a 
little lower. 
Oil of Chamomile, Roman. Up to the present it was an 
open question whether tiglinic acid, which had previously been detected 
b}' various chemists in the oil of Roman chamomile, had to be regarded 
as an original constituent of the oil, or whether the detection of this 
acid must be attributed to a conversion of the angelic acid which 
occurs in this oil in considerable quantity. E. E. Blaise 2) now has 
been able to prove that tiglinic acid is not a constituent of the oil. 
In addition to the well-known hawthorn, Crataegus oxyacantha L., the 
flowers of Viburnum Tinus (Laurustinus) and also of Erica arhorea have in a remark- 
able degree the odour of anisic aldehyde. 
Bull. soc. chim. Ill 29 (1903), 327. 
