" Sh'til(Ji/h(irk" hjli.rdlijptx. 185 



Fractional Distillatinii of Oil of ?]. M inlhrldiid. 



The yellow stringyljark oils consists mainly of dextropinene 

 althouj^h phellandrene is also presdnt, as may be seen from the 

 graph of its fractional distillation (Fig. II.) ; this fact at once 

 absolutely distinguishes it from ?J. ('(iiiside/iiaiui, which is chieHy 

 camposed of the laevo- rotatory phellandrene, and from B. inarror- 

 hyiicha, which contains considerable amounts of eucalyptol and but 

 little pinene. 



Hence the chemical comj>osition of the nils (also shown graphically 

 by their distillation curves in Figs. T. and II.) places E. Maelleriana in 

 one division of the '" stringybarks '" with E. dtitropinea, E. laevo- 

 pinen and E. \ViJki/i-so/iinn<i : whilst E. macrorhynrha is placed in 

 the other main division with such species as E. capiteJIafa, E. 

 eiujenioidta, E. piperita, E. ohiiqua and E. Deleyattnsis. 



E. Cou-sidtuiana appears to be the only known representative of a 

 division occupying an intermediate position. 



