277 



E. amygdalina differs from that of the New South Wales form in that it contains 

 much less cincol, has a very high laevo-rotation, contains much more phellan- 

 drene, and is much less soluble in alcohol. The odour of the oil is also much 

 less aromatic. The terpineol in the oil of the Australian form is responsible for 

 this more pronounced aromatic odour and greater solubility. 



The following tabulated results give the general characters of the crude 

 oils from three consignments, collected at the several localities, and on the dates 

 given : 



The cineol was determined by the resorcinol method, and although this 

 would seem to indicate the presence of an increased amount of that constituent, 

 yet a phosphoric acid determination in the mixed oils gave a result of 16 per cent, 

 cineol. 



The Nubeena sample contained less high-boiling constituents than did the 

 Hobart material, and consequently had a lower specific gravity. It also contained 

 more cineol. 



On rectification, nothing distilled below 174 C. (corr.) with either sample. 

 The Hobart (i6ch April, 1920), oil gave 57 per cent, distilling between 174-195 C., 

 and 37 per cent, between 195-255, mostly between 230-240. The Hobart 

 sample (i5th May, 1912) gave 63 per cent, between 174-195, and 32 per cent, 

 between 195-245. The. Nubeena sample gave 83 per cent, distilling between 

 174-195, and 10 per cent, between 195-266. These fractions gave the following 

 results : 



The high-boiling portions of these oils contained a considerable quantity 

 of piperitone, as is the case with E'. dives ; thus the temperature did not rise much 

 above 255 C. 



