602 OBSERVATIONS ON THE EUCALYPTS OF N.S.W., 



shorter character, resembhng the more friable varieties (of barks) 

 of E. hemipliloia. It is almost undistinguishable from the bark 

 of E. piperita. It is usually of a dark, dirty grey colour. Occurs 

 only on the trunk, or at most on the largest branches; the branches 

 usually quite smooth. 



Seedling or nackfir leaves. — Opposite, narrow-lanceolate. Pro- 

 bably all the forms have the twigs more or less rusty glandular. 



Mature leaves. — This species varies in the size, shape and 

 texture of its leaves. The usual shape is lanceolate, or even 

 broadly-lanceolate, but some forms are linear-lanceolate or even 

 nearly linear, comparatively thick, and the veins very oblique at 

 the base, not prominent, e.g., specimens from Mittagong, and also 

 a tree known as "Silver- top" at Nimitybelle in the extreme south 

 of the Colony. Sometimes the foliage is quite dense; in other 

 cases it is sparse. 



This would appear to be the form most generally employed in 

 the manufacture of Eucalyptus oil in this Colony. It is so chosen 

 because its leaves contain an unusually large percentage of oil, 

 which is, however, not at present a favourite in European markets 

 owing to the almost entire absence of cineol (eucalyptol) and the 

 very large percentage of phellandrene. The above remarks are 

 more or less applicable to all forms of amygdalina. 



Buds — The shape of the operculum of the western and northern 

 forms (Mt. Victoria and New England) is blunt, being nearly 

 hemispherical; those of the southern forms in our collection are 

 more pointed. 



The variability in the shapes of the operculum in E. amygdalina 

 is brought out in the plate (comprising two forms) in the 

 <' Eucalyptographia." 



Fruits. — Although in the original description of the species the 

 flowers are in heads of 6-8, those of some of our N.S.W. forms 

 have at least twice as many, and some perhaps nearly as many as 

 those of the variety radiata. None of our specimens have the 

 fruits as pear-shaped as depicted in the drawing of the left-hand 



