342 



E. tereticornis grows mainly on the recent alluviums, river flats, ancient lake 

 basins, and on the lower terraces of the Tertiary formations, up to an elevation of 150 

 feet, or more rarely, 200 feet above sea-level (p. 100). In only one instance has he 

 found it growing in the mountains, viz., at Glen Falloch, where it occupies a basin of 

 soft shale of Upper Devonian age from 700 feet up to 1,500 feet above sea-level. The 

 soil of this basin, which is derived from the soft shales, resembles that of the lower 

 districts where E. tereticornis thrives best (p. 101). 



He again refers to the subject — 



" Geological formation, as producing variation of soil, has no doubt influenced the present distribution 

 of the Eucalypts, but its effects cannot be made out so clearly as those produced by climate, but the broad 

 features can be readily seen by anyone travelling through Gippsland. E. tereticornis grows almost entirely 

 on lands which have been at one time lake or estuary beds, or in the alluvial flats of rivers. 



The Stringybark Eucalypts prefer the Tertiary sands and sandy clays. E. odorata (E. Bosistoana 

 is meant) grows mainly on the Miocene limestone, but this partiality to particular formations is not so 

 apparent when all the Eucalypts are considered. Still, in looking over the whole of Gippsland, I observed 

 some marked cases which it would be well to note. A good instance is afforded by E. amygdalina regnang 

 (b), (E. regnans), which in Gippsland grows almost wholly upon the Mesozoic coal measures. E. hemiphloia 

 appears to be confined to the Plutonic and Metamorphic areas of the Tambo and Snowy Rivers. A final 

 instance may be taken from the Gelantipy tableland, to the west of the Snowy River, which shows how 

 certain Eucalypts grow preferentially upon certain formations. This tableland is formed by a great 

 thickness of Devonian and Plutonic rocks, overlaid by more or less connected sheets of Tertiary basalt. 

 I observed that on the former grow especially E. piperita, E. globulus, E. Sieberiana, and E. amygdalina, 

 (E. radiata), and on the latter formation E. Stuartiana, E. mettiodora, E . polyanthemos , and E. macrorrhyneha" 

 (p. 108). 



This is followed, at p. 115, with a table of geological distribution of all the species 

 under the headings Plutonic, Metamorphic, Silurian, Devonian, Mesozoic, Miocene, 

 Pliocene and, later, Volcanic. 



E. fastigata occurs on red coloured jungle soils, probably of volcanic origin, 

 in north-east Gippsland. (Harry Hopkins.) 



South Australia. — " Soil Survey and Forest Physiography of Kuitpo, South 

 Australia," by E. O. Teale, D.Sc, is Bulletin No. 6 of the Department of Forestry of the 

 University of Adelaide (1918). It is well illustrated by maps and diagrams. 



Speaking of the Cambrian age, Dr. Teale says that only superficial and oxidised 

 material is available for examination, but the rocks appear to consist largely of somewhat 

 sandy phyllites and slates, with bands of quartzite. These areas in general are charac- 

 terised by Stringybark (E. obliqua). 



The relatively mature topography of the Meadows Creek valley, together with 

 the nature of the deposits which fill its bed, make its lowest portions rather poorly 

 drained. The stiff clays which underlie the soil of the valley render its moderately 

 flat bottom very wet for five or six months in the year, but nevertheless provide conditions 

 admirably adapted to the growth of the Red Gum (E. rostrata) which forms a fine timber 

 belt of great extent along the valley. 



