24 
Indian Forest Records. 
[VOL. IX 
Fraction I. which had the following constants evidently consisted 
of a hydrocarbon : — Dg®-° 0-839, 1-4702, [a]®®° — 20-96°. It was 
purified by distillation over sodium when it was found to boil very 
constantly at 169-5 — 171-5°/ 697mm. The following constants were 
observed for the pure hydrocarbon ; — D|qo 0-8715, N 1-4695 
30 ® 
[a] ^ — 21-26°. A careful examination showed that it consisted of 
practically pure l.-a.. phellandrene, p-phellandrene and dipentene being 
absent. The phellandrene nitrosite prepared in the usual manner- 
decomposed at 105° and was separated into the two isomeric forms 
melting at 105° and 113-114°. 
Fractions II and III . — -These two fractions which were only 
obtained in small quantity were found to bo free from phenols, ketones 
and aldehydes. They were combined and treated with an alcoholic 
potassium hydroxide solution to hydrolyse any esters present. The 
neutral oil was separated in the usual manner, the alkaline liquid 
being reserved for further examination (see below). On fractionation 
of the neutral oil under diminished pressure (200mm.) after a further 
quantity of the terpene had distilled over below 140°, a fraction was 
obtained which distilled fairly constantly between 140-155°. This frac- 
tion which was too small for further purification smelt strongly of lina- 
lol but all attempts to prepare the crystalline urethane were unsuccess- 
ful. On oxidation with chromic acid in acetic acid solution citral was 
evidently formed and was recognised by its characteristic smell and 
there can therefore be little doubt that this fraction consisted essent- 
ially of final ol. 
A small quantity of a viscid oil distilled above 155° and consisted 
apparently of a sesquiterpene but it was too small in quantity for 
investigation. 
The alkaline solution from which the linalol had been separated was 
evaporated on the water bath until free from alcohol and made acid 
with dilute sulphuric acid when a viscid oil separated. This was dis- 
tilled over in steam and the volatile acid, which only passed over very 
slowly, made into the silver salt which was found to contain 36-8 per 
cent of silver a figure agreeing well with that required for the silver 
salt of undecylic acid (Ag=36-9 per cent). 
£ 134 J 
