BY THE REV. J, MILNE CURRAN. 801 



Bogan and Lachlan waters at Nangeribone to the south, a distance 

 of 160 miles in a direct line. There is not, to my knowledge, in 

 this stretch of country one natural cutting exposing any section 

 of strata worth noting. We have here many thousand square 

 miles of land, naturally waterless, with no mountains properly 

 so-called, elevated on an average nine hundred feet above sea level, 

 and yet suffering no denudation. Detrital matter from the hills 

 is simply spread out at their bases. Judging from analogy and 

 allowing for a smaller rainfall, the general surface should suffer to 

 an appreciable extent. As a matter of fact the district loses nothing, 

 for our creeks even in flood time rarely reach the Darling or the 

 Lachlan, much less the sea. No matter representing disintegrated 

 rock is carried to any distance, and any denudation there is, is 

 purely local. 



The fossiliferous beds herewith enumerated are all that, at 

 the present time, are known to exist in an area measuring one 

 hundred by one hundred and fifty miles. 



Lower Carboniferous. — Babinda Sandstones. 



As a rvile basalt and igneous rocks are rare in this district, but 

 at New Babinda Station on the road from Nymagee to Nyngan, 

 patches of basalt, quartz-porphyry, and diorites are met with. 

 Intimately connected with these rocks is a series of coarse 

 and fine-grained ferruginous sandstones. They are limited in 

 extent, not occupying more than 50 square miles at the outside. 

 These sandstones owe their preservation in a great measure to a 

 selvage of the intrusive rocks referred to. For some years I have 

 collected fossils from the rocks in this locality. I endeavoured, 

 without success, to engage the attention of various palaeontologists 

 in Europe, and it was not until I sent a small collection to Mr. 

 R. Etheridge, jun., of the British Museum (now of Sydney), that 

 I was able to get reliable information about these shells.. The 

 Babinda fossils are not well preserved; the matrix is coarse and 

 friable. Unhappily the imperfect condition of the specimens sent 

 to Mr. Etheridge, rendered it impossible for him to do more than 



