174 R. T. BAKER AND H. G. SMITH. 
that given by the wood when it is burned for domestic 
purposes. The specific gravity of this liquid portion at 
16° OC. was 0°9854. The rotation could not be determined 
as the light did not pass. It was soluble in an equal volume 
of 707 alcohol, but became turbid and milky with three or 
more volumes. It was easily soluble in 80% alcohol and 
became but slightly turbid with eight volumes. 
The ester content was high, as the saponification number 
was 106°6. The acid number was also very high 68°8, but 
this was largely influenced by the presence of the phenol 
and other allied substances, as well as by the free acid. On 
distillation, the greater portion came over withina compara- 
tively small range of temperature. Nothing distilled below 
248° ©. (cor.) except a little acid water; 60% distilled 
between 248-255° C. As the oil distilling at the latter 
temperature became a little blue the receiver was changed, 
and 21° of a bright blue oil was obtained distilling between 
255 —-265° O. The third fraction, 10%, distilling between 
266 —296° C. was a deep indigo blue oil. The first fraction 
was again distilled when most of it came over between 
250 —252° O., this was but little coloured, was insoluble in 
90°: alcohol, had specific gravity 0°9266 at 15° O. and a 
refractive index at the same temperature 1°4926. Although 
evidently consisting largely of a sesquiterpene, yet this 
must necessarily have been far from pure. Further deter- 
minations will be made on the constituents of this very 
interesting oil from the timber of the Australian Callitris. 
It was found that aiter determining the acid value, that 
the separated oil formed a crystalline mass after standing 
some hours. The crystals were found to be guaiol, and 
these had evidently been held in solution by the substances 
acted upon directly by the potash, or in combination with 
them. The oilseparated from the saponification determin- , 
ations and also crystallised readily on standing. No other 
crystalline body was determined besides guaiol. 
