279 



On rectification, i per cent, distilled below 172 C. (corr.). 

 172-194, 88 per cent, distilled; between 194-260, 6 per cent, came 



between 260-276 

 results : 



First fraction 



Between 

 over, and 

 4 per cent, distilled. These fractions gave the following 



sp. gr. at 15 C. = 0-8561; rotation D - - 51-5; refractive 



index at 20 = 1-4792. 



Second ,, ,, ,, = 0-8904; rotation a D - - 28-8; refractive 



index at 20 = 1-4850. 



Third ,, ,, ,, = 0-9406; rotation D + 9 - o ; refractive 



index at 20 = 1-5050. 



The cineol was determined by the resorcinol method in the first fraction ; 

 a ketone absorption made in the same portion gave 2 per cent.; when corrected 

 for the crude oil, the cineol present was only 5 per cent. 



Material of this Eucalypt for distillation was forwarded from Guildford 

 Junction, Tasmania, in September, 1912. The yield of oil was 0-6 per cent., 

 which is considerably lower than from the New South Wales material. The 

 oils, however, were practically identical in every way, and there is little doubt but 

 that both were distilled from the same species. The chief constituent was 

 phellandrene, and pinene probably absent. Cineol was detected, but in very 

 small amount. Eudesmol was present, proved by crystallisation. It is doubtful 

 if piperitone occurred, if so, it could only be in traces. Geraniol was detected as 

 in the previous case. 



The crude oil had specific gravity at 15 C.= 0-8628; rotation D -- 57-8; 

 refractive index at 20 = 1-4833, and was insoluble in 10 volumes 80 per cent, 

 alcohol. The saponification number for the esters and free acid was 4-5. 



A portion was acetylated in the usual manner ; the saponification number 

 for this acet3^1ated oil was 33-6, and in the cold with two hours' contact, 22-1. 

 Considering the -free alcohols to consist of eudesmol and geraniol only, this 

 result gives about 3 per cent, eudesmol and 6 per cent, geraniol. 



On rectification, i per cent, distilled below 172 C. (corr.). Between 

 172-193, 79 per cent, distilled ; between 193-255, 6 per cent, came over, and 

 between 255-275, 10 per cent, distilled. These tractions gave the following 

 results : 



First fraction, sp. gr. at 15 C. = 0-8494; rotation a D - - 68-6; refractive 



index at 20 = 1-4786. 

 Second ,, . = 0-8878; rotation a D - - 28-0; refractive 



index at 20 = 1-4858. 



Third = 0-9304; rotation D + 14-0; refractive 



index at 20 = 1-5009. 



The cineol was determined by the resorcinol method in the first fraction ; 

 when calculated for the crude oil, the result was only i per cent. A ketone 

 determination with the first fraction gave negligible results. 



As illustrating the comparative constancy in results with the products 

 of individual species, it may be mentioned that the above localities are over 600 

 miles apart. 



