— 40 — 
standing in winter cold. The bromide recrystallised from acetic ether, 
formed fiat, colourless prisms of the melting point 134^ to 135^. 
Cymene. This body is present in cypress oil only in small quantity. 
It was isolated from a portion boiling from 174° to 180°. The terpenes, 
of which a large admixture was present, were decomposed by oxid- 
ation with one per cent, chameleon - solution at ordinary temperature. 
The cymene, which was thereby not attacked, was abstracted from the 
oxidation-liquid by steam distillation. It distilled at 175° to 177°, 
but still showed a dextrorotation of 3°; d-^^o = 0,8590. Oxidation 
with 5 ^/q permanganate solution yielded p-oxyisopropyl benzoic acid 
of the melting point 155° to 156°. Boiling with concentrated hydro- 
chloric acid effected its conversion into propenyl benzoic acid of the 
melting point 160° to 161°. 
Ketone. The fraction boiling at 80° to 90° (3 to 4 mm pressure) 
contains a ketone with a peculiar odour, reminding both of menthone 
and of thujone. We isolated the ketone from this fraction in the form 
of its semicarbazone, melting distinctly at 177° to 178°. It does 
not appear to be a mixture of two bodies. When mixed with syn- 
thetic menthone semicarbazone, the melting point falls to 163° to 164°. 
The quantity of the substance was not sufficient for further identification. 
We hope later-on to be able to report on a second ketone which is 
chiefly present in the portions of the above-mentioned boiling point. 
Sabinol (?). We believe to have detected this alcohol, which had 
up to now only been found by E. Fromm^) in savin oil, in a fraction 
of cypress oil distilling between 70° and 85° (3 to 4 mm pressure). 
We are as yet unable to decide whether the alcohol as such, or in 
the form of its ester, occurs as a constituent of cypress oil, as the 
oil which we had under examination for its detection had been sapon- 
ified with alcoholic potash. Unfortunately sabinol does not form a phenyl 
urethane, which would provide a more certain and readier means of 
identification than the present conversion into a-tanacetogene dicarbonic 
acid. The alcohol isolated by us was characterised by its high specific 
gravity, which amounted to 0,9433. The optical rotation was -|- 14^8'. 
It distilled in vacuo between 70° and 74°, at ordinary pressure at 
208° to 212° (i. e. almost corresponding to sabinol). We endeavoured 
to prove its identity with sabinol by the oxidation into a-tanacetogene 
dicarbonic acid. We also obtained a mixture of an acid which did 
not yet melt at 250°, with one melting between 130° to 140°. On 
the strength of these results, we feel justified in stating that the presence 
of sabinol in cypress oil is probable. 
Terpene alcohol. On treating an oil boiling at 90° to 95°, in 
a solution of benzene, at the temperature of the wather bath, with 
^) Berliner Berichte 31 (1898), 2025. 
