348 



Atherton-Herberlon Tablelands.— On the granites, Bos: (E. microtheca), Poplar Gum (E. alba), and 

 on moist flats, River Gum (E. tereticomis) ; on diorite, Bloodwood and Ironbark; on the greissen, Blood- 

 wood (E. terminalis (?) ), and on the metamorphic rocks, Ironbarks (E. crebra or drepaiiophi/lla) and Lemon- 

 scented Gum (E. citriodora). In the Herberton district, Stringybark is also fairly plentiful on poor soils, 

 both of granite and metamorphic origin. 



Irvinebank-Emu Ford Area. — On the arkose-like greywackes of the district, as near Mount Albion, 

 we have a Yellow-jacket (E. trachypMoia (?) ); on lode formations a. Gum-topped Bloodwood, or Dead 

 Finish is common {E. Cheziana (?) ). On the granite country between Irvinebank and Stannary Hills 

 we have Broad-leaved Ironbark (E. melanopMoia) Scented Gum (E. citriodora). On the Featherbed 

 porphyry rocks, Narrow-leaved Ironbark- is the commonest tree, but on associated tuffs and more basic 

 porphyries, we also get Lemon-scented Gum and Broad-leaved Ironbark Box (E. leptophleba). On the 

 slates and schists the Scented Gum, White Gum (E. pallid ifolia (?) ), Narrow-leaved Ironbark (E. crebra), 

 and Bloodwood are common. Poplar Gum (E. alba) is also a common form on the porphyry country. 



Featherbed Range. — On the porphyries between Boon-Moo and Petford, Narrow-leaved Ironbark 

 is characteristic of the slopes, and Poplar Gum (E. alba) of the flats. Where the porphyries are syenitic, 

 Bloodwood also comes in. Scented Gum occurs in scattered places on tuffs and metamorphics where the 

 depth of soil is sufficient. 



On the acid granites near Lappa, Silverleaved Ironbark (E. melanophloia (?) ), Bloodwood (E. 

 latifolia (?) ), Gum or Ash (E. grandifolia) are the commonest. On the more basic rocks, Bloodwood 

 (E. latifolia), Narrow-leaved Ironbark (E. crebra). 



Part III of this series is concluded in the issue for November, 1922, pp. 339, 



440. He proceeds to discuss : — 



Hodginson- May town Belt. — On the granite patches where a fair depth of soil obtains, Box 

 (E. microtheca), Blue Gums (E. tereticomis) and Bloodwoods (E. terminalis) thrive. On the greywackes 

 throughout the belt, Ironbark is in almost exclusive command, and becomes very monotonous to the eye. 

 The narrow-leaved species (E. crebra) alone was noticed in the southern portion of the belt, but at the 

 Maytown end a lemon-scented species (E. Staigeriana) with a more rounded leaf, is very abundant, as well, 

 as on the white greywackes. On the alluvial flats of greywacke origin we have also E. alba and E. grandifolia 

 and, near permanent water, E. papuana. 



Chillagoe-O.K .-Palmer Belt. — On the limestone country we get an abundance of calciphile trees. 

 Bauhinia, &c, interspersed with the more widespread species of Eucalyptus such as E. grandifolia, E. alba, 

 and in damp places, E. papuana and E. terminalis. On the granite country we have E. grandifolia, Box 

 (E. microtheca), Bloodwood (E. terminalis), while on the poorest granite soils we have E. setosa, with some 

 E. grandifolia interspersed. 



Etheridge-Croydon District. — The forest flora of the granite country is more inclined to the calciphile 

 than to the calciphobe type ; this on account of the lime-felspar content of the granite, and the comparatively 

 slight leaching of soils under the climatic and topographic conditions of these granite areas. 



Thus, on the " older " granites of the Etheridge, we get Box (E. bicolor and E. microtheca), Ironbark 

 \E. pruinosa), Gum or Moreton Bay Ash (E. grandifolia), while on the " new " granites (of Chillagoe granite 

 age and acid character), Gum (E. grandifolia chiefly), with Box and Ironbark on the flats. On the Desert 

 Sandstone of the Newcastle Range we have Yellow Bloodwood or Yellow Jacket (E. trachypMoia) on the 

 red loams, but with these occur E. grandifolia, E. melanophloia, E. leptophleba, E. setosa, E. gracilis (?), 

 E. ■ dichromophloia, E. pallidifolia (?), E. ferruginea (?), E. tetrodonta, E. terminalis, E. miniata, 

 E. Norma ntonensis. 



In the porphyries about May Lagoon (Croydon Road) the following trees were abundant : — 

 E. terminalis, E. miniata, E. pruinosa, E. melanophloia. The Etheridge basalts were typically clothed 

 with Box (E. microtheca and E. pruinosa). In moist places on all formations E. papuana and E. alba. 



In vegetation, physiography and climate, this district is very similar to the Northern Territory. 

 There is no scrub country at all in this region, and agriculture would only be possible with irrigation, in 

 spite of the good soils, since the climate is markedly semi-arid. 



