EXPLANATION OF PLATE XII. 



Fig. 1. The mass of Hawkesbury Sandstone, known as " Hands-on-the- 

 Rock," Wollondilly Eiver, S.W. corner of the Parish of 

 Werriberri, County Camden. 



[Prepared from rough sketches by the Authof, by Mr. G. H. Barrow, 

 of the Australian Museum, and reproduced by the photoline process.] 



