Irtdian Forest Records. 
16 
[VoL. IX 
ketone thus obtained was converted into the semicarbazone which 
melted at 204-205°. 
0‘1261 gave 26-4ccN2 at 26° and 706mm. N=22'2. 
requires N=22'0 per cent. 
Fraction II . — The second fraction was purified by repeated distilla- 
tion over sodium when it was obtained as a colourless highly refracting 
oil which boiled at 152-154°/40mm. and evidently consisted of the 
nearly pure sesquiterpene. 
0-0967 gave 0-3148 CO.^ and 0-0978 H^O, C=88-7, H=ll-2. 
CigHgi requires C=88-2, H=ll-7 per cent. 
The sesquiterpene was found to have the following constants : — 
D 0-9195, 1-5010, [a]^^ -(- 13-86°. These values may be 
compared with those found by Koberts (loc. cit. p. 796) for the 
sesquiterpene isolated by him Djfo 0-9276, 1-5 170, + 14-36°. 
When dissolved in acetic anhydride the terpene gave with sulphuric 
acid a port wine colour. It was not found possible to prepare any 
crystalline derivatives. 
Fraction III . — This fraction which apparently consisted essentially 
of a sesquiterpene alcohol was ultimately obtained as a viscid yellow 
oil boiling at 202-204°/55mm. It had the following constants : — 
0-9578, 1-515, [a]^ +38-41°. It yielded no crystalling 
derivatives "nd could not be characterised. 
0-1037 gave 0 3094 COg and 0 0938 HgO, C=81'3, H=10-l. 
C15H24O requires C=81-l, H— 10-9 per cent. 
Free Acids. 
The alkaline solution with which the original oil had been washed 
was extracted with ether to remove traces of adhering oil and saturated 
with carbon dioxide when no separation of any phenol was observed. 
The solution was acidified with dilute sulphuric acid and distilled 
in steam when a small quantity of a crystalline acid passed over, 
which after crystallisation from dilute acetic acid melted at 110°. On 
analysis it gave the following figures 0=74-4, H=9-6, M=179-9. 
Unfortrmately it was not obtained in sufficient quantity for further 
purification and identification. 
Combined Acids. 
The alkaline solution resulting from the hydrolysis of the esters 
present in the oil was evaporated on the water bath until free from 
alcohol, made acid with dilute sulphuric acid and distilled in steam. 
[ 126 ] 
