32 R. H. CAMBAGE. 



E. coriacea and rubida in New South Wales and Victoria, 

 and E. Gunnii, coccifera, and vernicosa in Tasmania. 

 This goes to show that the actual protective qualities of 

 the bark are not wholly regulated by the texture, but also 

 depend upon the constituents contained in the bark. 



Scaly Barks. — Among the scaly-barked Bucalypts of 

 which E. corymbosa of the Bloodwood group may be con- 

 sidered as a type, there are various gradations, and the 

 section may be extended to include such trees as E. robusta. 

 This class of bark, which is something between a scaly and 

 a woolly, probably most nearly represents that of the earliest 

 type of EucaJypt, and is most plentiful in the Coastal Area, 

 next on the Western Slopes, and least in the Mountain 

 Region. 



Scaly to sub-fibrous. — In the sub-fibrous class, or what is 

 a sort of transition from scaly to shortly-fibrous, we have 

 amongst others E. populifolia and E. hemiphloia of what 

 are known as the Box-tree group, the bark of which is 

 usually of a grey colour. The fibre is very short, the bark 

 not particularly thick, and usually covers most of the trunk 

 and often the branches as well. The Box timbers are very 

 hard, and like the Ironbarks, this class of Eucalypt abso- 

 lutely shuns the colder situations, neither group having a 

 representative in Tasmania. The Box-tree section is most 

 common in the Interior and next to that, on the Western 

 Slopes, occurring also in the Coastal Area, but absent from 

 the mountains above an altitude of 3,000 feet in latitudes 

 south of 32°. 



Fibrous Barks. — The commonest forms of fibrous-barked 

 trees are known as Stringybarks of which E. eugenioides 

 and E. obliqua may be mentioned as types. Most of these 

 Stringybarks occur in the Coastal Area, and next in the 

 Mountain Region, while there is only one species, E. macror- 

 rhyncha on the Western Slopes, and except for an occasional 



