AUSTRALIAN MELALEUCAS AND THEIR ESSENTIAL OILS, 203 



aod did not, of course, contain copper like ordinary 

 "cajuput" oil. The odour reminds somewhat of "cajuput" 

 but the secondary odour is distinctive. It contains much 

 less cineol than ordinary "cajuput." The lower boiling 

 terpenes consist principally of lsevo-rotatory pinene and 

 lsevo-rol atory limonene. Some aldehydes were present in 

 the first portion distilling, and the odour of benzaldehyde 

 was easily detected. The high boiling fraction contained 

 a considerable quantity of an alcohol, but the indications 

 for the presence of terpineol were not good, particularly 

 as only a small amount distilled between 190 — 255° O. 

 After the latter temperature, a considerable quantity 

 distilled, ranging from 30 to 40 per cent, of the total 

 oil. This high boiling fraction apparently contains a fair 

 quantity of the sesquiterpene alcohol which is such a 

 pronounced constituent in the oil of the Sydney form, (M. 

 Smithii). The dextro-rotation of this high boiling fraction, 

 its high boiling point, together with the ascertained 

 presence of an alcohol, indicate that this is so, although 

 the physical results suggest the presence also of a sesqui- 

 terpene belonging to the closed chain series. 



The sample from Port Macquarie (30/11/10) was rectified; 

 a small amount of acid water and some aldehydes came 

 over below 157° C. Between 157 - 173° O. 26 per cent, 

 distilled; between 173 - 183° 38 per cent. The ther- 

 mometer then quickly rose to 250°, only 1 per cent, 

 distilling. Between 250 - 270° 30 per cent, distilled. The 

 three main fractions gave the following results : — 



Sp. gr. at 15° C. Rotation a D Ref. index at 22°C. 

 First fraction 0*8914 - 5°. 8 1*4628 



Second fraction 0*9005 - 10°.4 1*4632 



Third fraction 0*9257 + 11°.2 1*4956 



The cineol was determined by the resorcinol method in a 

 portion boiling below 190° C, the result indicating 39 per 



