178 F. L. St'dhvell : Gedlogi/ of Broadmeachnvs. 



III. Newer basalt (B), section vi., Will Will Rook, County of 



Bourke. 



IV. Averao-e of 161 analyses of typical basalts (largely olivine 



bearing), from various localities. R. H. Daly, Journ. 

 of Geol., vol. xvi., 1908, p. 409. 

 V. Doloinitic limestone (C), section x.. Will Will Rook, County 



of Bourke. 

 VI. Impure limestone (D), section xiv.. Will Will Rook, County 

 of Bourke. 



VII. Impure limestone, section x., Will Will Rook, County of 



Bourke, analysed by J. C. iSewbery. Descriptive 

 Catalogue of Rocks and Minerals, National Museum 

 (Selwyn), p. 57. 



VIII. Limestone, Bacchus Marsh. Analysed by J. C. Newbery, 



Laboratory Report, 1890. 



DESCRIPTION OF PLATES XLIII. AND XLIV. 



Plate XLIII. 



Map of Broadmeadows. Reproduced from the quarter-sheet No. 

 2, S.W., with slight modifications. Scale 2 inches to 

 one mile. 



Plate XLIV. 



Fig. 1. — Olivine anorthoclase (?) basalt, older basalt series. 



The centre phenocryst is anorthite crowded with dark 



inclusions. 

 Fig. 2. — Olivine anorthoclase (?) basalt, newer basalt series. 



The olivine with its dark, altered border is in strong 



contrast to the clear olivine in fig. 1. 



