EXPLANATION OF PLATE XII. 
Fig. 1. The mass of Hawkesbury Sandstone, known as “ Hands-on-the- 
Rock,” Wollondilly River, S.W. corner of the Parish of 
Werriberri, County Camden. 
[Prepared from rough sketches by the Author, by Mr. G. H. Barrow, 
of the Australian Museum, and reproduced by the photoline process.] 
