178 



was the principal terpene, and phellandrene was absent, li contained eudesmol 

 in small amount. After some time had elapsed the crude oil deposited a powdery 

 substance, as do so many of the crude oils of species belonging to the cineol- 

 pinene class. All our samples of oil from this species deposited this substance, 

 so that the constituent from which it is derived is always present. The rectified 

 oil was yellowish in tint, and this is general!)' found to be the case with those 

 belonging to this group ; this yellow-tinted product is particularly noticeable 

 with oils obtained from species belonging to the ' Boxes." Aromadendral was 

 isolated from the oil of the Bathurst sample, and appears to be a constant 

 constituent in the higher boiling portion of the oil of this species, which is thus 

 shown to be closely associated with those Eucalypts known as "Boxes." 



The crude oil had specific gravity at 15 C. = 0-9198 ; rotation a D + 3-35° ; 

 refractive index at 20 = 1-4663, and was soluble in i| volumes 70 per cent, 

 alcohol. The saponification number for the esters and free acid was 8-7. 



On rectification, 2 per cent, distilled below 168 C. (corr.). Between 168- 

 183 , 85 per cent, distilled, between 183 194°, 5 per cent, distilled. These 

 fractions gave the following results : — 



First fraction, sp. gr. at 15 C. = 0-9168; rotation a D + 3-55°. 

 Second ,, .. ,, = 0-9281; ,, not taken. 



The cineol, determined by the phosphoric acid method in the rectified 

 portion, was 65 per cent., or about 58 per cent, in the crude oil (O.M.j. 



Material of this species for distillation was also obtained from Tallong 

 (Barber's Creek), N.S.W., in July, 1808. The yield of oil was 0-83 per cent. InHo 

 respect did it differ materially in character or constituents from the above sample, 

 so that the two oils may be considered of equal value. The oil was redistilled and 

 the fraction separated at 183 C. The specific gravity of the crude oil was 0-9208 ; 

 and the optical rotation a D + 5-7°. The redistilled portion had specific gravity 

 at 15 C. = 0-9154, and rotation a D + 5-5°. 



The cineol, determined by the phosphoric acid method in the rectified oil, 

 was 66 per cent. (O.M.). 



Material for distillation was also obtained from Bathurst, N.S.W., in March, 

 1901. The oil differed in no respect from those described above. The specific 

 gravity of the crude oil was 0-9101, and the optical rotation a D + 3-1°. 



The cineol, determined by the phosphoric acid method in the crude oil, 

 was 54 per cent. (^O.M.). The yield of oil was 0-74 per cent. 



Material for distillation was also obtained from near Bathurst, N.S.W., 

 in June, 1899. The oil was practically identical with those described above, 

 with the exception that aromadendral was present in slightly larger amount, 

 thus increasing the specific gravity of the oil somewhat, and causing it to be 

 slightly lsevo-rotatory. The constituents present were, however, in agreement, and 

 the oil was equally rich in cineol. The yield of oil was 0-5 per cent. The 

 specific gravity of the crude oil = 0-9266. The specific gravity of the rectified 

 oil was 0-922, and the rotation a D - - 0-38°. The saponification number for the 

 esters and free acid was 8-2. 



The cineol, determined by the phosphoric acid method in the rectified oil, 

 was 61 per cent. (O.M.). 



