NOTE. 
In the year 1888 at the request of 8ir F. McCoy, 
then Director of the National Museum, Mr. George 
Sweet, F.G.S., undertook a careful investigation into the 
rocks of the Mansfield district in Victoria, lhe great 
majority of the specimens now described were secured by 
Mr. Sweet, who generously placed his time and experience 
at the disposal of the Museum — in fact, except for a 
certain amount of assistance in actual manual labour, 
which Mr. Sweet supervised, the collection was almost 
entirely made at the expense of this gentleman, to whom 
the Museum is much indebted. On the death of Sir I. 
McCoy it was found that, though the plates which illus- 
trate this memoir had been drawn and printed off under 
his supervision, there was no letterpress referring to them 
other than the very brief notice which was published in 
the Annual Report of the Secretary for Mines in Victoria 
for the year 1889. Under these circumstances they were 
placed in the hands of Dr. A. Smith Woodward, who 
cordially consented to make use of the plates already 
printed off, though it must be understood that Dr. Smith 
Woodward is not responsible for these, and that it would 
undoubtedly have been advantageous to him if they could 
have been executed under his own supervision. This, 
however, was not practicable, and the Trustees are in- 
debted to Dr. Smith Woodward for undertaking the 
work under circumstances which could not have been 
altogether satisfactory to himself. 
Melbourne , January , 1906 . 
