254 



Charles Fenner : 



Survey has published contour plans, which extend over the south- 

 ern portion of the block. An effort has been made (Fig. 18) to 

 indicate the general direction of the ridges and valleys in this 

 lifted block. As already mentioned, the Lerderderg and its tribu- 

 taries have done nearly all the work. Between this stream and the 

 others concerned, residual ridges occur, and help to provide the 

 easiest regular " tracks " across the ranges. 







Fig. 18. — streams and Divides of the Blackwood and Lerderderg 

 Ranges. (V) — volcaniic hills. 



It will be seen that there is a high knot of country to the north 

 of Blakeville, from! which, streams flow in all directions; an irregu- 

 lar ridge connects this with the Main Divide at BuUarto, forming 

 a north-south divide between the Lerderderg and the Werribee. 

 Another long ridge runs east and south-east beyond Mt. Blackwood, 

 separating the Lerderderg from the south-flowing tributaries of 

 the Werribee — the Korweinguboora, Korjamumnip, Dale's, Back, 

 Korobeit, and Korkuperrimul Creeks. The writer's conception, 

 which will be elaborated when dealing with the individual streams,, 



