_ INTRODUCTION. 
THE limited space available in the National Museum for the exhi- 
bition of the geological collection of rocks makes it impossible at 
present to display more than one suite of specimens. To render 
ERRATA. 
Page 18, No. 74. For “(Diabase),” read “ (Diorite),” 
» 18, No. 75. i s y 
s 18, No. 76. 3 y 3 
18, Nos. 77 and 78. y > z 
18, Nos. 77 and 78, last line. For “some pyroxenic mineral,” read 
“ some amphibolic mineral,” 
72, No. 53. For “ Morris’ Plain,” read “ Morris’ Claim.” 
74, No.71. For “ Dawson,” read “ Danson.” 
81, Note after 38B. For “specimen No.,38,” read “ No, 38a.” 
91, No. 2. For “ Moryya,” read “ Moruya,” 
» 95, No. 15. For “(7),” read *(71).” 
In List of Maps } No. 42. For “19. N.W.,” read*“ 19. S.E.” 
on fly-leaf. No. 51. For “22, S.W.,” read “23. S8.W.” 
illustrate the Palsontology of Vietoria, 
The minerals are also arranged as a separate collection; and 
numbered consecutively to agree with the Descriptive Catalogue. 
The published geological quarter-sheet maps, referred to on 
the specimen labels, are exhibited on the walls contiguous to the 
cases, Each map represents fifty-four square miles of country, and 
a copy of the geologically-colored sketch-map of the whole colony, 
on a scale of eight miles to one inch, is also exhibited. On the 
above-mentioned maps are letters and numbers—thus (EI) aeh 
