155 



the temperature then quickly rose to 225, and between that temperature and 

 2 5 2 > 5 P er cen t distilled. These fractions gave the following results : 



First fraction, sp. gr. at 15 C. 0-9022; rotation a D + 14-1 ; refractive 



index at 20 = 1-4603. 

 Second ,, ,, = 0-9149; rotation D + 6-6; refractive 



index at 20 = 1-4611. 

 Third ,, ,, = 0-9309; rotation not taken; refractive 



index at 20 = 1-4859. 



The cineol was determined in the portion distilling below 195 by the 

 resorcinol method ; the result was 60 per cent, when calculated for the crude oil. 

 By the rapid phosphoric acid method it was 57 per cent, when calculated lor 

 the crude oil. 



The results obtained with this oil, and also with those of E. iirnigera 

 and E. vcrnicosa show them to belong to the better class of cineol-pinene oils, 

 but they suffer from the defect of containing rather too much pinene, 

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

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

 defect of specific gravity could easily be remedied if desired. 



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

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

 in yield is due to the coarser stems and less expansive leaves of E. vcrnicosa : 



Yield per cent. 



Specific gravity at 15 C. ... 



Rotation a D ... 



Refractive index at 20 C. ... 



Saponification number, esters, &c. 



First fraction 



Second fraction 



Cineol 



E. Muelleri. 



Cineol-pinene oil, no 



phellandrene. 



T28 



o- 9097 

 + 10-4 

 1-4647 

 15-3 



Below 173^ C. D + 14- 1. 



Below 195 C. a D + 6- 6. 



57 per cent. 



E. vernicosa. 



Cineol-pinene oil, no 



phellandrene. 



0-807 

 0-9038 



+ n-3 

 r 4642 



5'9 



Below 173 C. a D 

 Below 194 C. o 



+ 16.7 

 + 9' 4- 



52 per cent. 



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

 Soc., Tasmania, October, 1912. 



