— 35 — 
All these notes on citron oil which have been published in recent 
times, have been lucidly arranged in a small pamphlet issued in January 
last by the London Essence Company. 
If we now summarise all what has been said on the subject, we 
find that the varieties of citron yield oils of totally different properties; 
the cedri (as has been proved by Gulli and ourselves) yield an oil 
which has a somewhat higher specific gravity, and a little less rotators- 
power, than that from cedrini, whilst the latter is clearly richer in 
hydrocarbons. 
We have also had cedrini oils repeatedly before us (1898/99), and 
we found for this oil in two cases: — 
These results agree very well with those communicated by Burgess 
and lately also by Gulli. 
In future it will therefore be necessary to discriminate severely 
between these two oils, a view which is supported by S. Gulli in a 
recently published note on citron oiU). It is obviously desirable to 
maintain the name citron oil for the oil prepared from cedri, and in 
the absence of a better name, the cedrmi oils will meanwhile have to 
be designated as such. 
Lemon Oil. The position of this article was in September 1902 
as follows: — 
With the rich lemon-harvest of the winter 1901/02, the consumers 
abroad had during the first nine months of 1902 covered the whole 
of their requirements for the year, and even more, in the most ab- 
undant manner. A falling-off in the demand caused in Sicily a decline 
in the prices to a level which had never been reached before; this 
again attracted the interest of speculators abroad, who could be per- 
suaded all the more readily that it would be well to take advantage of 
the situation, as the lemon oil of the previous season was good in 
every respect, and the oil had in the course of the summer also 
proved its excellent keeping qualities. 
An abundant supply to the consumers abroad of the previous 
season's oil, at low prices, appeared all the more opportune, as the 
prospect of the new harvest, of the winter 1902/03, was not favour- 
able, and much higher prices were asked for new forward oil than for 
old spot oil. 
As a matter of fact, the result of the new lemon-harvest has been 
about half of that of the previous one, and as in the case of the 
= 0,8507; aj)2o° 
= 0,853 ; 
^) The Chemist and Druggist 62 (1903), 454. 
3* 
