250 Charles Fenner : 



It would seem probable that the old uplifted block originally 

 had a more extensive northern slope than is the case at present, so 

 that longer consequent streams on that slope would be competed 

 against by vigorous streams heading back from the south. The 

 southern rivers, having a markedly shorter course to the sea, have 

 a great advantage in average grade, and are the more vigorous 

 streams. Thus it was found all along the Divide in this area that 

 the deeper valleys and the more vigorous erosive work was being 

 done on the south, with consequent northern migration of the 

 Divide. 



Four miles further eastward (slightly N.E.) is another area of 

 volcanic material, at BuUarto. The intervening Ordovician 

 ranges are almost uninhabited, and no roads cross that area. We 

 must therefore travel northward to the mining town of Daylesford 

 and southward again to Old BuUarto. Both roads lie mainly along 

 converging tongues of basalt, which preserve old north flowing 

 valleys. 



The rich agricultural village of Old BuUarto lies right on the 

 Divide, a mile or two south of the railway station of new or north 

 BuUarto. The latter station long enjoyed the distinction of being 

 the highest in Victoria (2452 feet). An old raihvay survey, 

 coming across the ranges from the south, crosses the Divide at Old 

 BuUarto (2610 feet). The basalt flows which here form the Divide 

 are not extensive, but are highly cultivated, and crown the range 

 with rich farms. To the north the Wombat Creek and Kangaroo 

 Creek flow to the Loddon, both rising within the township, and 

 having here low, swampy courses, although deepening further 

 north. In this township also we may find the sources of the two 

 main rivers of our area — the Lerderderg and the Werribee. 



Here again we find the more vigorous work being done by the 

 southern streams, especially by the Lerderderg. The actual source 

 of the Werribee River is somewhat swampy, though deepening 

 rapidly further south. A small N.-S. ridge divides the Werribee 

 from the Lerderderg, and the latter stream is conducting a very 

 vigorous erosive campaign, forcing the Divide to the north. 



To the east of BuUarto there is a high timbered hill, locally 

 called Coghlan's Hill, and apparently of Ordovician. Beyond that, 

 lava flows, mainly extending to the north, again form the Divide 

 (Fig. 15); the highest point of this volcanic area is Wuid Kruirk 

 (2800 feet), also the highest point in the Werribee area. Magnifi- 

 cent views are obtainable from this Mount, mainly to the south- 

 ward, right across the great uplifted peneplain blocks, boldly cut 



