— 9 — 
table of the properties of some oils rectified by ourselves. This table 
shows that the product supplied by us is always of identic constitution. 
dj^5o ajy ^D20o Acid Number Ester Number 
0,9281 -{-22° 32' 1,50820 6,5 8,95 
0,9259 4-24'^ 28' 1,50802 5,1 6,8 
0,9277 -|-24°36' 1,50957 578 3,85 
0,926 4- 24° 40' 1,50857 5,09 4,37 
0,9295 +26° 1,51083 5,5 5,0 
All these oils were soluble in 4 to 4,5 volumes of 95 per cent, 
alcohol. 
For this reason we were all the more surprised, when recently 
several consigments sent to England formed the subject of complaints. 
The samples of oils sent to us for comparison, to which the oil we 
were to supply should correspond, differed in such a pronounced 
manner from our distillates, that we could not help looking upon them 
with great suspicion. For four samples which had a much brighter 
colour than our rectified oil, we obtained the following values: — 
d^5o otD ^D20o Acid Number Ester Number 
0,8835 + 3^4' 1,48863 — 4,9 
0,8437 — 1^53' 1,46367 5,4 3,3 
0,873 + 3° 14' 1,48122 12,7 6,0 
0,8941 -fi2°55' 1,48633 2,1 2,7 
All these samples were more readily soluble in 95 per cent, alcohol 
than the oils mentioned before. An addition of alcohol could not, 
however, be detected. 
The essentially lower specific gravity, the low^er rotatory power, 
and the change in the index of refraction, pointed to the fact that 
all these oils contained larger proportions of lower boiling constituents 
than our distillate. A detailed examination, with which we are at 
this moment still occupied, will prove whether these oils may be claimed 
to represent pure oils of amber, or whether they have undergone some 
"improvement" by the addition of other resin-distillates. 
Oil of Ambrette- seeds. The well-known natural phenomena 
in Martinique have been used as a pretext for a rise in the price of 
ambrette-seeds. The holders of stocks, however, did not meet with 
any reciprocal feeling on the part of the consumers, and were soon 
compelled to drop their tactics. 
Material is now available in greater abundance than ever. 
We were the first to produce oil of ambrette-seeds, and to place 
it on the market. It has now secured a firm footing in the high- 
class perfumery- trade. The liquid oil of ambrette-seeds which we 
added to our lists in October last year, also finds great favour; from 
