— 27 — 
Oil of Cinnamon Leaves. The oil has already frequently 
been the subject of chemical examinations. Up to now, eugenoP), 
cinnamic aldehyde ^j, safrol, benzaldehyde, and benzoic acid-^) have 
been found in it. It differs from the oil of cinnamon bark (Ceylon 
cinnamon oil) by its high content of eugenol (70 to 90 per cent) 
and its exceptionally low content of cinnamic aldehyde (0,1 per cent). 
In connection with our examination of Ceylon cinnamon oil, we 
have also occupied ourselves, but not thoroughly, with the oil of 
cinnamon leaves. The oil worked up by us had the following con- 
stants: Specific gravity 1,0479; optical rotation — 10'; saponification 
number 40,2. 10 kilos of the oil were shaken with soda liquor 
(about 2 per cent) in order to remove the bulk of the eugenol. The 
dried oil (1,4 kilo) which now only contained a small quantity of 
eugenol, was next distilled in vacuo. It passed over between 34^ 
(25 mm pressure) and 110° (12 mm). The portions boiling up to 71°, 
at 9 mm pressure, are probably chiefly terpenes and benzaldehyde. 
The next fractions, boiling up to 90^, were laevogyre, had a linalol- 
like odour, and yielded citral on oxidation with chromic acid mixture. 
The citral purified with the bisulphite compound distilled at 227 to 
232^, and when heated with pyruvic acid and y8-naphthylamine, 
yielded citryl-^-naphthocinchoninic acid of the melting point 198°. This 
proves the presence of linalol also in oil of cinnamon leaves. At 
a higher temperature than the fractions containing linalol, considerable 
quantities of safrol passed over. The oil did not appear to contain 
cinnamic aldehyde, — or if at all, only in infinitesimal quantity. 
Citronella Oil, Ceylon. Although the exporters in Ceylon 
consistently declare that the value of this article cannot go down any 
further, the fact that within the last few months the quotations have 
again grown weaker throws a peculiar light on the reliability of such 
statements. But like everything on this earth has a limit, so it may, 
humanly speaking, be assumed, that citronella oil has now also reached 
its lowest quotation; and we would recommend ample cover if only 
for this reason, that at the present value, which is equally unremuner- 
ative for producers and traders, the manufacture might at last be 
restricted. In such a case, the interested parties would no doubt take 
full advantage of the existing conditions. We ourselves have purchased 
large parcels at the present prices, and we pay special attention to 
this article, as we also use large quantities for the manufacture of 
geraniol by our patent process (German patent No. 76435). 
^) Stenhouse, Liebigs Annalen 95 (1855), T03. 
2) Report April 1892, 45, and October 1892, 47. 
^) J. Weber, Archiv d. Pharm. 230 (1892), 232. 
