BY R. H. CAMBAGE. 5£ 



for the greater westerly influence and lower altitude of Howell, 

 which averages about 1,000 feet less than Torrington, a most 

 interesting and instructive comparison of these two floras can 

 be made, showing how important is the geological factor in 

 regulating the distribution of our native plants. 



Torrington to Emmaville. 



The road from Torrington to Emmaville, which is southerly 

 about 16 miles, soon passes out of the acid granite, and enters 

 an area of andesite and what is locally known as blue granite. 

 The absolute change of the flora after leaving the acid granite is 

 most remarkable, and it seems no exaggeration to estimate that 

 quite 80 per cent, of the plants are left behind. Amongst those 

 noticed during a hurried drive before Tent Hill was reached at 

 12 miles were : — 



Sterculia diversi folia, Jacksonia scoparia (Dogwood), Angophora 

 subvelutina, Eucalyptus viminalis, E. albens Miq. (White Box); 

 E. nova-anglica (Red or Black Peppermint); E. dealbata A. Cunn., 

 E. tereticornis, E. macrorrhyncha, E. melliodora, Casuarina Cun- 

 ninghamiana (River Oak, on Glen Creek), and Xanthorrhcea sp. 

 (Grass-Tree). 



It was of interest to notice that Sterculia diversifolia and 

 Eucalyptus viminalis appeared immediately the andesite was 

 reached. 



E. nova-anglica occurs on the better soil in the valleys, and 

 near Glen Creek. The species is one which is typical of good, 

 fairly damp soils, and is therefore a well known tree in the 

 settled districts of New England. (For pievious remarks seo 

 These Proceedings, 1904, p. 795). 



E. albens is the White or Grey Box tree which practically 

 defines the east and west limits of the area referred to by me as 

 the Western Slopes; and although south of the Murrumbidgee 

 it is rarely found at an elevation exceeding 1,300 feet above sea- 

 level, it climbs to 3,000 feet around Emmaville, the highest 

 point observed being on the Bald Nob, which reaches about 3,200 

 feet. It is of interest to find that'this tree manages to ascend 



