26 FOREST VEGETATION. 
in those localities contiguous to soils of a more fertile kind, such 
as where basaltic formations overlie the pace and — timbers 
generally appear to dwindle and lose reat portion of the 
limited vigour which they attain ata porns Sadinne from the _ 
better class of soil. 
In localities where the prevailing rocks are micaceous quartzose 
granite, with numerous outcrops of quartz and dykes of slate 
(as specimens R, 8, and 1), such as on the — Range between 
Dundee and Gle n Elgin, scrub oak, and two r three species 
e 
part of stringy-bark red gum. Forest oak is of frequent 
occurrence on the adjacent flats in this and the preceding forma- 
tion ; but this timber appears to be more common about their 
New Englan ie a es Lee of its prosperity to the influence of 
its extensive tracts of soil of basaltic origin, sap extend over a 
very large portion of its western slopes, form those rich 
alluvial flats which offer so great an sbtesietin ma the agriculturist, 
and the good sound ridges, so excellent as sheepwalks. 
On those soils the effects of climatic change on the forest 
vegetation appear to be more visible and marked than oh any 
and ; h v 
in different localities, and Satta the variations are distin- 
pondin 
0 shot 
ade for ‘hs. most part of large pon with a slight = 
mix peppermint. On rich black basaltic soils it is a 
wholly replaced as we approach those warmer regions below the 
falls to the west by the white box (EZ. hemiphioia). The pepper- 
mint init feurish altogether on peel the same class ie soil on 
“Ds ‘ie ate ie ie. colder regions the prevailing timbers are 
this — of white gum, with selina the vegetation in the © “ 
