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R. T BAKER AND HENRY G. SMITH. 



oil of E. macrorhyncha. The stearoptene of Eucalyptus 

 oils (EudesmoL) although such a pronounced constituent in 

 the oil of E. macrorhyncha, has not been detected in the 

 oil of E. laevopinea. A very small quantity of eucalyptol 

 occurs in the oil of E. laevopinea, not exceeding 5 per cent.* 

 it is however a very pronounced constituent in the oil of 

 E. macrorhyncha. About 3 per cent, of ester, calculated as 

 geranyl-acetate, is present in the oil of E. laevopinea. The 

 following table gives the general results obtained with the 

 crude oils of this species, those previously recorded for 

 the Rylstone sample being given for comparison : — 



That the oil of this species consists largely of laevo- 

 rotatory pinene was shown previously, see "Research on 

 the Eucalypts" Sydney 1902, pages 41 and 242 ; and Proc. 

 of this Society, 1898, p. 202. 



On rectifying 200 cc. of the Armidale sample using rod 

 and disc still head it commenced to distill at 155° C. (all 

 temperatures corrected); between 155-158°, 100 cc. came 



