lOI 
th\'inol; the small remnant of the oil which remains liquid appears 
to be carvacrol. 
For 'practical purposes this new source of thymol is of no conse- 
quence, as the plant, although it is very rich in oil, is not found in 
large quantities. 
Vanillin. The fall in the prices has made further progress since 
our last Report, in consequence of an increase in the production 
beyond all measure. There is no sensible reason for such far-going 
price-cutting, as it can only have the effect of bringing the article into 
bad repute. Unfortunately a certain doubt, that it may injuriously 
affect the quality, is not unwarranted, for products are met with in 
commerce, which in working up exhibit striking deviations from normal 
vanillin, and which have led to unpleasant experiences. 
For this reason it is a bad plan to consider only the price when 
purchasing this article; on the contrary, the reliability of the manu- 
facturer should first of all be taken into consideration. These inferior 
qualities are not always adulterated; they rather suffer from technical 
defects, which may possibly be due to a certain lack of cleanliness 
and care in the manufacture, or perhaps to the use of inferior solvents 
in the crystallisation. For the rest, according to human foresight the 
lowest selling price has probably now been reached, and the time may 
be near when the production of vanillin will be abandoned by many 
manufacturers as unremunerative. 
Schimmel & Co. 
In connection with the table for calculating from the ester numbers 
the percentages of alcohols of the formulae QoH^gO and QoHgoO, 
and of the acetates belonging thereto, which we published in our Report 
of October 1897, we have now drawn up a similar table for the alcohols 
^15 -^24 O (santalol) and Hgg O. 
We have also provided a table for the calculation of geranyl tiglinate 
from the ester number, as in the case of geranium oils the ester-content 
is usually calculated on tiglinic acid. 
With regard to the formulae employed for the calculation, and to 
the use of the tables, we would refer to what we stated in the above- 
mentioned Report, and also to the statements made by Gildemeister 
and Hoffmann in their work 'The Volatile Oils' 
^) page 202. 
