BY R. H. CAMBAGE. 20T 



stand that this form is not actually rare, still I have only 

 collected it on creeks, and have never noticed it on the trees 

 cjroNvino- near laro^e rivers. 



In travelling through this part of the country, it is not long 

 before anyone interested in botany learns that the hills of sedi- 

 mentary formation are much more prolific in botanical specimens 

 than are those composed of igneous rocks. 



Near Back Berdouba Station, about 6 miles north of Gilgunnia, 

 is a hill apparently of porphyry rising a few hundred feet above 

 the surrounding levels, and known as North Peak. The Eucalypts 

 on it are confined to E. populifolia and E. tKreticornis, var. deal- 

 hata, chiefly the latter, some of it growing as trees and some 

 spreading as mallees. Casuarina quadrivalvis is also found near 

 the top, with Acacia doratoxyion, Sterculia diver sifblia, and 

 Canthium oleifolium; while climbing over them is Tecoma 

 au6tralis. Just at the base of the hill there are Callitris rohusta 

 and Acacia decora. All the above, with the exception of Cantliivtn 

 oleifolititn, may be expected on any porphyry hill throughout the 

 (xilgunnia district. Most of these hills are, therefore, fairly clear, 

 and generally they present a rounded form in the distance. 



From Gilgunnia to Double Peak is about 23 miles southerly, 

 the formation being slate for 5 or 6 miles after which it is chiefly 

 weathered porphyry. Callitris rohusta is to be found all the 

 way, other trees and shrubs met with being : — Eremophila 

 Mitchelli, E. longifolia, E. latifolia, Hakea leucoptera, Casuarina 

 Camhagei, Cassia eremophila^ Apopliyllum anomalum^ Heteroden- 

 dron olecefolium, Geijera parvijlora, Dodoncea sp., Exocarjjiis 

 apltylla, Sterculia diversifolia, Eriostemon difformis, and Olearia 

 decurrens^ A. Cunn. 



The Acacias were represented by A. iiomalophylla^ a little of 

 A. aneura, A. Oswaldi, A. decora, A. calamifolia, A. doratoxylon, 

 and A. Burkittii. Some few miles after leaving Gilgunnia a few 

 trees of Acacia excelsa were seen, and this is the most southern 

 point at which I have ever found the species, though it may 

 continue to the south-west. 



