155 



the temperature then quicklj rose to 2-25 . and between thai temperature and 



', 5 per cenl distilled. These fractions gave the following results: 

 Firsl fraction sp gi al 



nlrai In e 



Second 

 Third 



The cineol 



resorcinnl method 



refra< tive 



rctrai li\ e 



5°C. = 0-9032 ; rotation a D + 1 pi 

 index at .'O = 1-460 ; 

 = 0-91 pi ; rotation a D 4 6-6 ; 



index at 20 P4611. 



- 0-9309 ; rotation not taken 

 ind( x at 20 1 ■ 1.859. 

 was determined in the portion distilling below 195' bj the 

 the result was 60 per cent, when calculated fo] the 1 rude oil. 

 T>\ the rapid phosphoric acid method it was 57 per cent, when calculated foi 

 the crude oil. 



The re>ult> obtained with this oil, and also with these oi E. umigera 

 and /;'. vernicosa shew them to belong to the better class oi cineol-pinene oils, 

 hut they suffer from the defect oi containing rather too much pirn 1 1 

 consequently their specific gravities are reduced below 0-91. However, more 

 than halt the rectified oils oi these species consists of cineol, and the supposed 

 defect el specific gravity could easity be remedied il desired. 



It is interesting to notice hew closely the oil of this species agrees with 

 that of E. vernicosa, as may be seen from the following tabic. The difference 

 in yield is due to the coarse; stems and less expansive leaves oi E. vernicosa :— 



E. Muelleri. 



Cineol-pinene oil. no 



phellandrene 



Yield 1 11 1 1 1 lit 



Specific gravity a1 15 C. ... 



Rotation a D ... 



Ri frai tive index at 20 C. ... 

 Saponification number, esters, &c. 

 First fraction 

 Si ' ond fraction 

 Cineol 



[•28 



0-9097 



+■ 10-4 



14647 



i5 - 3 

 Below 173 C. a D + i.y r 

 I'" lew n)5 C. a D + 66 . 

 57 per cent. 



rnicosa 

 1 neol pinene • iil, no 

 j.lirll a. Irene. 



0-807 



9038 



1 4(1 [2 



59 

 Below 17.; C. a B + 16.7 

 Below mi C. + 9-4. 

 5J per cent. 



The results of this investigation were published by us in the Proc. Roy. 

 Soc, Tasmania, October, 1912. 



