536 J. T. Jutson: 



Thus the Main North Anticline dies out a short distance south 

 of the Yarra, and no reefs appear to be there. North of the 

 river, however, are the Loyal Liberal and other reefs, but the 

 latter become scarce as the anticline widens out. The Main 

 South Anticline has the main line of reef. It has been traced 

 from the " Great Southern '" reef (south of Anderson's Creek) 

 through the Fourth, Third, Second, and First Hills to the 

 northern side of the river, just west of the Caledonia mine. 

 Farther to the north-east where the short anticlinal axis already 

 referred to crosses a great bend of the river, a reef about 18 

 inches wide occurs. In the Caledonian Syncline two lines of 

 reefs (the Caledonia, and the Black Swan-Bendigo lines) are 

 traceable for a considerable length of the syncline. Thomson's 

 Gully Anticline shows few workings, as the fold is short. The 

 Consols Anticline has fairly continuous workings, and at Fifth 

 Hill the reefs agree in length so far as traced. 



A further point of interest is the distribution of the reefs in 

 connection with the more westerly of the two auriferous dyke 

 east of Warrandyte. This dyke runs in a north-westerly direc- 

 tion, and the reefs run from the south-west, and would meet the 

 dyke if extended. So far as known, no reefs cross the dyke 

 south of the river. The relations of the reefs to the dyke and 

 to the folds will be discussed later. 



The main line of reefs is mostly in the eastern leg of the 

 Main South Anticline, but very close to its axis. Along the 

 top of Fourth Hill, no well-defined reef has been worked, most 

 of the workings being in thin apparently disconnected veins. 

 The Caledonia is practically along the axial line of the Cale- 

 donia Syncline, while the Bendigo, Consols, and Fifth Hill 

 lines are in rocks dipping westerly at the surface. 



Various cross-courses have been described by Mr. Forbes. 

 Some I have verified, others I have not from want of accessi- 

 bility. These do not call for any detail. Tliin-bedded veins 

 are found in various parts of the field. Sometimes they fault 

 the reefs, and are therefore subsequent to them. The reefs are 

 generally moved only a few inches or a few feet. The bedded 

 veins here indicate small movements along the bedding planes. 

 These veins are said to have an influence in places on tho 

 deposition of gold, as will be mentioned later. 



