BY C. IIEDLEY, 



317 



Various alternations of Wianamatta shale and Hawkesbiiry 

 sandstone indicate the former, while the latter are represented 



§ 



o 



CO 



••/^. 



\ 



"'i^:: 



c 

 'bi 



o 



CO 



Fig.l. 



by the anticlinal ridge of the Blue Mountains and by the syn- 

 clinal trough from Blacktown to Campbelltown. The sti'ata 



