92 
The Queensland Naturalist. 
August, 1922' 
shed by calcareous sandstones. Pine ( Callitris robusta) is 
invariably found on poor yet deep silieious sandstone 
country. On tablelands of silieious sandstone we get the 
Ironbark ( Eucalyptus decorticans) on shallow very poor 
soils. On silieious sandstone ranges with steep slopes, 
Lancewood ( Acacia dora&oxylon) and another Acacia (A. 
Bancroftii) are very abundant. These trees prefer the 
quickly drained slopes. 
The Poplar Box ( Eucalyptus populifolia) is a lover of 
calcareous sandstone country with fairly heavy soils and 
clayey subsoil. It is usually poorly drained country this 
tree prefers, and where the run-off is very bad and the 
subsoil has very high water capacity, the Sandalwood, 
Eremophila Mitchelli, accompanies the Box. The common 
Silver-leaved Ironbark ( E . melanopliloia) flourishes on the 
same formations as the Poplar Box, but only on hills and 
well-drained places. 
The Spotted Gum (E. maculata) likes sandy loams on 
well-drained slopes. The lemon-scented variety ( E . macu- 
lata var. citriodora ) seems to be confined to gravelly and 
conglomerate country. 
Numerous other plants and their significance as an 
indication of the agricultural value of soils were mentioned. 
It was emphasised in brief that the old plan of the bush man 
of judging country by the trees growing on it is sound in 
practice. 
Mr. C. T. White (Government Botanist), speaking in 
support of a vote of thanks to the lecturer, pointed out how 
important would be the study of the distribution of our 
grasses and forage plants in relation to soils and geological 
formation. He also strongly advocated the inclusion of a 
botanist in geological reconnaissance parties, so that the 
botanical survey of the State could be carried out systemati- 
cally at the least expense. 
POPULARISING TREES. 
On a recent excursion of Club members, which Mr. C. 
T. White (Government Botanist) led to Mount Coot-tha, 
Professor H. C. Richards (Queensland University), who 
was one of the party, suggested that it would add to the 
interest of the reserve if nameplates were placed on the 
most prominent of the native trees growing beside the 
chief path. The Mount Coot-tha reserve being under the 
control of the Brisbane City Council, the suggestion was 
passed on to the Mayor (Alderman II. J. Diddams, 
C.M.G.). He received it favourably, and Mr. White has 
been asked to co-operate with the City Council in carrying 
out the pleasant little innovation. 
