168 W. G. WOOLNOUGH. 



to clear up many of the points which now present difficulties 

 in correlating the geological formations of New South Wales 

 and Queensland. 



Rocks of undoubted Carboniferous age occur in the 

 Manning River area. At Orowdy Head are tuffaceous 

 rocks, not essentially different lithologically from the sub- 

 glacial tuff above referred to. But while the latter beds 

 dip mostly northerly or north-easterly, the Crowdy Head 

 beds dip southerly, this suggests an unconformity. The 

 presence in the Orowdy Head beds of Knorria and very 

 abundant plant impressions indicates their Carboniferous 

 affinities. The Cape Hawke beds, to be described in a 

 paper by Messrs. Briggs and Watson, conform in direction 

 of dip to the Crowdy Head beds. Between Krambach and 

 Gloucester the dips are mostly southerly, and at Copeland, 

 where lithologically similar beds are developed, Lepido- 

 dendron has been met with. 1 The correlation of the 

 Lepidodendron beds with those containing Pachydomus is 

 a work of first rate importance in Australian stratigraphy, 

 and it is the intention of the author to endeavour to 

 carry out this work in the near future. 



My thanks are due to the many residents of the Kempsey, 

 Taree and Gloucester districts who assisted me by advice, 

 hospitality and transport. I wish to express my gratitude 

 also to Messrs. Briggs and Watson, students at the Sydney 

 University, for their loyal and unselfish assistance under 

 far from pleasant conditions of field work. Professor David 

 and Mr. Dun have been ever ready with advice and help at 

 all points, and to them my best thanks are gratefully 

 rendered. 



1 Ann, Eep. Dept. of Mines for 1889, p. 230, and Min. Prod. N.S. Wales 

 1887, p. 60. 



