ON THE PINES OF AUSTRALIA. 161 
salts, therefore, contained 95°87; barium acetate, and 4°137 
barium butyrate. The indications for butyric acid have 
also been obtained with the oils of several of the species 
closely allied to C. glauca. 
The oil of the general material from Narrandera, 25/4/07, 
was rectified by steam distillation in the ordinary way; the 
greater portion of the oil readily came over. When it 
distilled very slowly the receiver was charged, and the 
distillation continued for a considerable time. <A small 
quantity of a yellowish oil was thus obtained. The bulk 
oil when dried was colourless, had a very refreshing Pine- 
needle-oil odour, and was bright in appearance. The 
saponification number was 39°13 equal to 13°77 of ester. 
The rotation ay = + 28°2°; the specific gravity, at 72° C., 
= 0°8682; the refractive index at 24° CO. = 1°4720. It was 
insoluble in 10 volumes of 90% alcohol. Soluble in 1 volume 
of absolute alcohol, but becomes turbid with 2 volumes. 
The smaller portion of oil was somewhat viscous, and 
gave saponification number 127°12 equal to 44°5/ of ester 
by heating, and 38°81% by cold saponification, three hours 
contact. The rotation ap = + 19°5’; the specific gravity 
at 73° O. = °9524; the refractive index at 24° C.=1°4828. 
It is thus evident that the whole of the ester is not easily 
redistilled by steam, although the greater portion comes 
over in the more readily obtained distillate. 
* * * 
No. 2.—This material was collected at Boppy Mountain, 
in the Cobar district, 440 miles west of Sydney, New South 
Wales, 25th May, 1903. The terminal branchlets with 
fruit were steam distilled in the usual way. The amount 
of oil obtained from 472 tbs. of material was 464 ounces 
equal to 0°616%. The rotation a» of the crude oil = +31°3°; 
specific gravity at t3° C. = 0°8665; refractive index at 19°C. 
= 1°4779; saponification number = 34°19 equal to 11°966% 
K—Aug. 5, 1908. 
oe 
