204 Proceedings of the Royal Society of Victoria. 



separated, which refused obstinately to crystallise even when 

 strongly cooled. The crystalline addition compounds of the 

 Terpenes with two molecules H.Cl. (Wallach, Ann. der Chem., 

 239, p. 3) could not be obtained from the four fractions boiling at 

 170-172°, 172-173°, 174-175^ and 179-185°, only liquid 

 hydrochlorides resulting. This is in agreement with the experience 

 of Wallach and Gildemeister in their research on E. amygdali?ta 

 oil {Ann. der Chem., 246, pp. 278-284). 



The fraction 175 -176° is of interest on account of its high 

 specific rotation [aj^ - 91-5° and low density -843 ; after removing 

 the Phellandrene the remaining oil is still strongly Ijevo-rotatory, 

 the optical activity being probably partly due to Ifevo-limonene. 



For studying the behaviour of the other type of oil in the 

 fractionating apparatus, a sample of number 34 of Table II. 

 was taken and distilled from calcium chloride with slight altera- 

 tion of the physical constants as in the last case, the values being : 



Density 

 Specific rotation 



.909.i5 = /i5 = 

 [a]o + 5-5°. 



A slight yellow colour in this oil should be mentioned. Several 

 fractionations on 200 c.c. were carried out iu the manner described 

 for the other type of oil. The results of the first and final 

 operations being given in the two following tables : — 



Table VII. 



