274 T. S. Hart : 



Jiud fourth, are continuous witli valleys on the opposite fall. The 

 tertiary rocks aie never cut thiougli, but less permeable beds are 

 probably often reached, and the waters of the permanent lagoons 

 may be taken as rej^resenting the level of permanent saturation 

 about 12U ft. above sea level near Cheltenham. 



Parish of Mordialloc and adjacent /ja/'/s of Moorahhin and 

 Dandenong. 



At Mordialloc and Mentone, and east of Cheltenham, and thence 

 north-east to near Clayton, the valleys fall to the south-east off the 

 highland at the heads of the Brighton valleys and the Elsternwick 

 Creek. They commonly show a very regular south-easterly direc- 

 tion, but ultimately their Avaters reach a channel which runs south 

 from near Claj'ton to the main drain east of Mordialloc. This is, 

 however, for the most part the natural course of the waters. A 

 valley starts on the South-road, a mile and a half east of Moorabbin 

 station, and runs south-east through the Benevolent Asylum 

 grounds. Another parallel to this starts near the Centre-road, east 

 of Bentleigh, and runs south-east into Reedy Swamp. Another 

 valley starts about a mile west of Clayton station near the Centre- 

 road, and after running south-cast for a little distance turns south 

 through Heatherton, becoming the main channel. The fall from 

 160 to 60 feet above sea level extends over two and a half miles, 

 about 40 feet to the mile, and thus considerably steeper than the 

 Brighton valleys. 



A south-easterly valley starts between Oakleigh and Clayton, and 

 its waters are also turned south by an artificial channel into this 

 main channel, Init a definite south-easteily trend of the valleys is 

 seen to the east of this made drain. 



Ill-drained and swampy places arc common within this area. 

 From Heatherton the old Dandenong-road continues south-easterly 

 close to the 70 ft. contoui', touching GO in some of the valleys, l)ut 

 never again i-eaching 80. Three shallow valleys with a southerly 

 trend cross the road, but in the country between this road and 

 the Gijipslaiid railway a south-easterly trend is often seen and 

 just sf)Uth of the lailwav a definite south-ea.stcrly ridge marks the 

 south-west limit of the Springvale valley. 



Near the main channel south of Heatherton, the contours begin 

 to show the effect of recent alluviation as high as the 40 ft. level, 

 ])ut in the neighbourhood of Mordialloc the Avell-defined south- 

 easterly ridges and valleys can be seen as low as the 10 ft. contour. 



