Part V.] Simonsen : Essential Oil from leaves of u Abies Pindrow.” 5 
On hydrolysis with alcoholic potassium hydroxide solution in the 
usual manner an oil was obtained which distilled constantly at 213- 
217°/697mm. and consisted apparently of a mixture of r terpineol and 
Z-terpineol ([<] 3 d°—22-14°). 
On treatment with amyl nitrite r-terpineol nitrosochloride melting 
at 112-113° was isolated from which the nitrol-piperide melting at 
159-160° was prepared. Derivatives of Z-terpineol could not be 
obtained. 
The alkaline solution gave on acidification nonylic acid which 
boiled at about 250° and gave a silver salt which showed on analysis 
40-3 per cent of silver, whereas C 9 H 17 0 2 Ag requires Ag=40-7 per 
cent. Fraction (6) consisted essentially of a sesquiterpene alcohol and 
gave on analysis the following figures :— 
0-1123 gave 0-3354 C0 2 and 0-11 H 2 0 0=81-5, H=10-8. 
Ci 5 H 24 0 requires C—81-8, H=10-9 per cent. 
The oil which was somewhat viscid and pale yellow in colour had 
the following constants Df§ o °0-9076, N 3 °° 1-4807, [ 7-72°. 
Fraction (c) consisted of an isomeric sesquiterpene alcohol and gave 
on analysis the following figures :— 
0-1277 gave 0-385 C0 2 and 0-1309 H 2 0 C=82-2, H=ll-4. 
0 15 H 24 O requires C=81-8, H=10-9 per cent. 
The constants of this sesquiterpene alcohol were notably different 
from those of its isomeride D §§=0-9259, N 3 ^° 1-4915, [«< ] 3 p-°-f8-1°. 
All attempts to prepare crystalline derivatives of the two alcohols 
were unsuccessful and they were not further investigated. 
The thanks of the author are due to Messrs. Gopai Kao and Ghose 
for assistance in the analytical work. 
Forest Research Institute, Dehra Dun. 
[ 372 ] 
