BY W. N. BENSON. 



567 



The writer has not been able to find an account of associations 

 of pyroclastic rock and sediment exactly similar to those of the 





in 



Fig.5. — Interbedded and intrusive pyroclastic rock, West Gap Hill. 

 Figs 6-7. — Intrusive pyroclastic rocks, Railway-cutting, Nemingha. 

 Fig.8. — "Eddy-bedding" in claj^stone and tuff, Railway-cutting, Neiningha. 



Tamworth District,* and has been led to adopt tentatively a 



rather speculative explanation of the features present. A fact 



* See Postscript to this paper. 



