PRESIDENTIAL ADDRESS. 



31 



tions. I have Dot included the hemiphloiae or half-barked 

 section, because this designation gives no clue whatever 

 to the nature or texture of the bark on the lower portions 

 of the boles, and this character of rough bark occurring on 

 the trunk in varying extent, with smooth branches, may 

 be found distributed in some measure throughout most of 

 the sections. 



There are so many gradations in the textures of the 

 Eucalyptus barks, that it is impossible to account for them 

 all in detail within the limits of five sections, and in a few 

 cases a particular class of bark may be almost equally 

 distributed over two climatic divisions. 



In considering the allocation of the sections in New South 

 Wales the following four geographical divisions will be 

 referred to viz.: — the Coastal Area, the Mountain Region, 

 Western Slopes and Interior (See Plate I). In the following 

 table the word "first" signifies "most abundant," and 

 fourth denotes "least abundant" in the particular division 

 under which the number appears. 



Barks. 



Coastal. 



Mountains. 



Western Slopes. 



Interior. 



Smooth 



Second 



First 



Third 



Fourth 



Scaly 



First 



Fourth ? 



Second 



Third ? 



Scaly to sub-fibrous 



Third 



Fourth 



Second 



First 



Fibrous 



First 



Second 



Third 



Fourth 



Furrowed 



First 



Fourth 



Second 



Third 



Smooth Barks. — The smooth barks, which include such 

 trees as Eucalyptus viminalis and E. coriacea, are perhaps 

 more typical of the Mountain Region than any other, with 

 the Coastal Area ranking a close second. It seems remark- 

 able that as the ascent is made, especially above 4,000 feet, 

 and the more rigid climatic conditions are encountered, 

 the Eucalypts, particularly if growing in the open, instead 

 of being more densely coated with thick fibrous bark, are 

 gradually restricted to the smooth-barked types, such as 



