290 PKOCEEDINGS OP THE GEOLOGICAL SOCIETY. [April 24, 



of this bed is in both places about north 30° west, which line would 

 connect the two outcrops, although nearly 300 miles apart. 



In the limestone bands which form the lower portion of the series 

 (shown in Fig. 12), corals are very numerous ; in fact the limestones, 



Fig. 12. — Section of Devonian Coral Limestone, Terrible Creeh, near 

 Messrs. Ounningham^s Cattle Station, Burdehin River, Northern 

 Queensland. 



where little alteration has taken place, are a mass of aggregated 

 corals ; and as this class of rock has resisted aerial destruction 

 better than the associated slates and sandstones, the barriers thus 

 formed mark the trend of the rock- system to which they belong, in 

 a very picturesque and decided manner ; their bold, massive and 

 varied outline chiselled into the most delicate fretwork by nature's 

 hand, is relieved by a wealth of richly tinted foliage, unknown in 

 the surrounding bush ; and the eye jaded with the monotony of the 

 " eternal Gum-tree " turns with delight to the changing tints and 

 varied scenery presented by these barrier-like records of the past 

 (Fig. 13). 



On the Broken Eiver, a tributary of the Clarke, in Korthern 

 Queensland, the entire Devonian system, as developed in Queensland, 

 could be easily and satisfactorily mapped. The branches of this 

 river cut right across the strike, and the bare edges of the rocks are 

 often exposed over the intervening ridges from creek to creek. Well- 

 marked beds of interstratified conglomerates seem to retain their 

 character over large areas ; and the loose pebbles from these can be 

 followed readily over the ridges, whilst the rocks from which these 

 pebbles ai'e deiived crop out in the gullies and ravines. 



As a large proportion of them are of quartz, the ridges covered by 

 them are often mistaken by miners for indications of a "deep lead" 



