— 57 — 
was added, the solution became slightly cloudy. The oil gave no 
phellandrene-reaction. At 5 to 6 mm pressure it distilled over 
from 50° to 100°. The ester number and the saponification number 
after acetylisation show that the oil contains abundant quantities of an 
alcoholic constituent, but on the other hand, but little ester. In order 
to obtain the alcoholic constituent, the oil was first saponified and 
then distilled in vacuo. At 4 to 5 mm pressure it passed over be- 
tween 48° to 103°. In the portions boiling up to 80°, phellan- 
drene could be detected. Its boiling point, at 4 mm pressure, lay 
at 44° to 45^; at 754 mm pressure, at 175^ to 176^; d^^o = 0,8565; 
«D = + 44''4o'. 
Treatment with sodium nitrite and glacial acetic acid yielded a 
very small quantity of phellandrene nitrite melting at 120°. 
The bulk of the saponified oil distilled at 10 mm pressure about 
106°, had the specific gravity 0,950 at 15^, and consisted of a 
mixture of geraniol and an as yet unknown alcohol with a peculiar 
odour reminding of linalool. Attempts to produce this alcohol ab- 
solutely free from geraniol have not yet succeeded, as the boiling 
points of these two bodies lie close together. When acetylised with 
acetic acid anhydride, the new alcohol forms an acetate of a charac- 
teristic spearmint odour. This acetate shows the following constants: 
boiling point 90° to 91°, at 4 mm; d^go = 0,9725; = — 4^30'; 
nj)2oo = 1,47615; ester number 282. Ester-content 98,70 ^/q, calculated 
for C10H17O.CO.CH3, or 97,71 7o calculated for H^g O • CO • CH3. 
By saponification the unknown alcohol was again obtained from this 
acetate. The constants were as follows: boiling point 92° to 93 ° at 
5 mm; di50 = 0,9503; ap = + 8°4o'; nj^gQO = 1,49735. After 
distilling once more, the specific gravity had been raised to d^^o = 0,9520, 
whilst the boiling point had altered but little. According to the analysis, 
the alcohol appears to have the composition QoH^^eO. 
Analysis : 
0,2262 gm. yielded 0,6484 gm. CO 2 and 0,2126 gm. HgO. 
Calculated for C^^oHj^gO: Found: 
C 78,84^0 78,180/, 
H 10,640/0 10,440/0 
The oxidation-products of the alcohol have not yet been examined. 
With phenyl isocyanate, a liquid phenyl urethane was obtained. 
In order to separate the whole of the alcoholic constituents of the 
gingergrass oil from the non-alcoholic constituents, the following process 
was adopted: 
400 gm. of the portion of the saponified oil boiling between 
98° and 112° at 9 mm pressure, were mixed with 200 gm. benzene 
and 200 gm. pyridine, and 350 gm. benzoyl chloride slowly added 
