68 The South Australian Naturalist. 



not so at i^resent. This tree has a different appearance in the 

 field to its congener, and can usually be identified by its bushy 

 top, which is sometimes almost umbrella shaped. The leaves 

 form a dense crown at the end of each branch. They are thicker 

 and stiff'er than E. ohliqua, and consequently do not hang so 

 much. These two trees can alwaj's be separated by their fruits. . 

 E. ohliqua has a cup-like fruit on a stalk, while the other has a 

 top-shaped fruit without a stalk, and they are packed tightly 

 together in a^small head or umbel. As in the former tree, the 

 bark of the l^rown variety is of a fibrous texture, fairly soft, and 

 never peeling off the tree. On some of the trees I have seen the 

 bark furrowed in a diagonal x^attern, while in others the trunk 

 has transverse cuts. 



The folloAving table will assist the reader in "placing" the 

 various points referred to in these notes: — 



Miles from Feet above 



Adelaide. sea-level. 



Adelaide — .. 101 



Goodwood 3 .. 109 



Mitcham 5i . . 242 



Clapham 6i .. 318 



Eden 9 . . 595 



Blackwood 11^ . . 838 



Belair 13i .. 1,009 



Long Gully 16| .. 1,311 



Upper Sturt 18i . . 1,466 



Mount Lofty 19^ . . 1,613 



An interesting feature of the distribution of the various 

 eucalypt species is to he found in the abundance or otherwise of 

 the different types found on any hillside. On the hill near the 

 first tunnel (8 miles) this distribution is as under; reading in 

 zones from the top of the hill down to the valley bottom : — 

 Dominant species : Sub-dominant species : 



1. Peppermint. Yellow Gum.* 



( Red Gum. 



2. Peppermint. \ Yellow Gum. 



3. Peppermint. | Y^Ho^^ 9^' 



[ (Casuarma). 



4. Peppermint. (Casuarina). 



5. Red Gum. Peppermint. 



6. Red Gum. Peppermint. 



7. Red Gum. Peppermint. 

 8. Red Gum. Peppermint. 



'(Note. — YelloAV Gum is the name now adopted for our Blue Gum. 

 "Blue Gum" is reserved for the "Tasmanian" Blue Gum {E. globulus), 

 ivhich is not indigenous to our State.) 



