150 



A. E. Dawkins 



TABLE I. 



The difference in yield illustrates the seasonal variation usually ob- 

 served in the distillation of oils from the Myrtaceae, but the physical 

 constants are so similar that the two samples may be regarded as 

 identical in composition, The oil is pale yellow in colour and possesses 

 a sweet penetrating odour. 



Fractional Distillation. 



By way of exploration 50 c.c. of the oil was submitted to a fractional 

 distillation in a still of standard dimensions, the results of which are 

 embodied in the graph and in Table II. 



160° 180 200 



Temperature of oil distilling. 

 I. Eugenia Smithii. II. Eucalyptus platypus. 



