40 Harris and Crawford : 



line from Sunbury to Coimadai. It includes the areas repre- 

 sented by Quarter Sheets 6 SE., and 7 NW. of the Geological 

 Survey of Victoria, and by portions of QSs. 6 SW. and 7 NE. 

 The surveys for these sheets were carried out by C. D. Aplin 

 and N. Taylor, under the direction of Dr. A. R. C. Selwyn. 

 Graptolites collected by the Survey parties were described and 

 figured by Sir F. McCoy. 1 In an area so extensive, and in parts 

 practically unsurveyed, there is room for division of opinion 

 on geological questions, and our opportunities have not per- 

 mitted as thorough an examination of all portions of the dis- 

 trict as we could wish. For sufficient reasons, we have ex- 

 cluded from this paper all detailed consideration of igneous 

 rocks. The boundaries shown on the accompanying Sketch 

 Map have been copied in the main from the Quarter Sheets, or 

 from the map of Messrs. Skeats and Summers. 2 We ourselves 

 have made few alterations in the actual boundaries, though we 

 differ from the earlier maps in our classification of the rocks 

 shown. 



II. — Previous Literature. 



During the last half century the area seems to have received 

 scant attention geologically, except in so far as the northern 

 portion has been included in an account of Mount Macedon by 

 Messrs. Skeats and Summers. 2 While our investigations were 

 in progress the Defence Department published two contour maps 

 covering the southern portion of the area. Dr. C. Fenner's paper 

 on the Werribee River, 3 though mainly concerned with the area 

 to the south and west, is also of interest. Dr. T. S. Hall 4 iden- 

 tified graptolites from the Coimadai side of the district. 



III. — Nomenclature. 



As in many other parts of Victoria, the local names of streams 

 and topographical features in general do not always agree with 

 those shown on the maps, nor are the maps always in agreement 

 with each other. On the Quarter Sheets the main stream of 

 the district is shown as the Saltwater or Macedon River ; McCoy 5 

 refers to it as the Saltwater ; the military sketch map of the 

 Macedon and Lancefield District marks it the Macedon River; 



1. l. 



2. 4. 



3. 5. 



4. 6. 



5. 1, Dec. 1, pp. 9, 14. 



