IX 
UTHOR S 
T REFACE. 
With the approval of the Under Secretary for Mines and Agriculture, and 
the concurrence of the Trustees of the Australian Museum, the Author has 
undertaken the preparation of a “ Monograph of the Silurian and Devonian 
Corals of New South Wales,” chiefly based on specimens contained in the 
Mining and Geological and Australian Museums in Sydney. To render the 
work more complete descriptions and illustrations of similar Corals from other 
parts of Australia will be introduced when practicable. 
In consequence of the pressure of other official duties it was found 
impossible to prepare a Memoir of this description in extenso, as a complete 
work. After deliberation it was determined to publish it in parts, each part 
to contain the species of one genus at a time, but the genera not necessarily 
following one another in systematic order. The sequence of the latter will 
be principally determined by the completeness of the material to hand. 
The first, and present part, will contain the species of the Genus 
Haly sites. In connection therewith, the Author desires to place on record 
his indebtedness to the Dev. J. M. Curran, late of the Technical College, and 
Mr. C. A. Siissmilch, of the same Institution, for the loan of material ; to 
Mr. W. S. Dun, Palaeontologist to the Geological Survey of New South Wales, 
for cordial assistance ; to Mr. E. E. Pittman, for the official publication of 
the work ; and to the Trustees of the Australian Museum for permission to 
use the collection in their charge. 
