— 35 — 
erroneous; in fact, exactly the contrary is the case. Normal lemon oil 
namely, as we have recently shown i), contains methyl heptenone, even 
if only in very small quantity, and the latter's presence in terpeneless 
oil would therefore not be remarkable. Moreover, the addition of 
pure lemongrass citral could not bring about the presence of methyl 
heptenone. 
Oil of Orange, sweet, has in the course of the last six months 
passed through many fluctuations in value. Whilst up to the early 
part of April the price was maintained at about 14 marks per kilo, 
it gradually dropped in the course of May and June to 12,25 m^rks. 
When at these low quotations the demand from abroad became brisk, 
the article advanced again in the course of July to 14 marks, and for 
a short time was even quoted at 14,50 marks. In August no large 
sales took place, chiefly because the stocks of spot -oil were almost 
completely exhausted. 
With regard to the new orange-harvest, the reports from the indi- 
vidual producing districts difler. Whilst in some districts a good crop 
is expected, less favourable reports come to hand from others. On 
the whole, the coming harvest may probably give a yield approximately 
equal to that of the winter of 1902 — 3. 
From this fact, taken in conjunction with the completely exhausted 
stocks of old oil, it may be concluded that cheap prices of the new 
oil appear hardly possible; but it should not be lost sight of that the 
oranges of the last harvest have given a low yield of oil, and that 
consequently, if the new fruit should give a better result, the possibility 
of the production of larger quantities of oil than in the previous year 
is not excluded. 
On the other hand, the supply of not quite perfect oranges to the 
Upper Italian markets has been greatly facilitated by the reduction of 
the rates of freight which has recently been allowed by the interested 
railways. The rate of carriage of oranges in bulk, in truck-loads, to 
Milan, Turin, Bologna, and other places, has been reduced by more 
than half If all these circumstances are taken into consideration, the 
conclusion may be drawn that the prices of new orange oil will hardly 
be less than those of last year. 
Eucalyptus Oil. In our Reports of April and October igoi^), 
we mentioned that the aldehyde which occurs in a few oils of euca- 
lyptus, and which up to that time had been looked upon as cuminic 
aldehyde, is, according to an examination by H.G.Smith, not identic 
with the above-mentioned aldehyde. 
Report October 1902, 36. 
^) Report April 1901, 34; Report October 1901, 29. Compare also Gilde- 
meister and Hoffmann, The Volatile Oils, p. 533. 
3* 
