148 THE GEOLOGICAL AGE OF VOLCANIC ACTIVITY 



Rands, W. H.— 



The Albert and Logan Districts, 1889. 

 Geol. Surv., Q. Publication, Xo. 51. 



Skertchly, S. B. J.— 



Geology of the Country Round Stanthorpe and 

 Warwick. 

 Geol. Surv., Q. Publication, No. 120. 



