54 Proceedings o/ the Royal Society of Victoria. 



all stiia^ and grooves, bvit the rounded contour still remains. 

 In several other places small portions of the till weie 

 removed, and a striated and grooved surj'ace invariably 

 exposed, the direction of the strife being still constant. 

 The till here is about ten or twelve feet in thickness, and is 

 distinctly overlaid by the Triassic rocks. On the opposite 

 side of the river (south side), a good section is ex])osed. 

 The till is again seen resting on the Silurian rocks, which 

 here also, as seen in section, appear to have been subjected 

 to the action of ice (PI. XII). The strata are nearly vertical. 

 The till here is seen to thin out, forming a wedge-shaped 

 mass. It is overlaid by the Triassic rocks which, below the 

 lower end of the wedge, rest directly on the Silurian. The 

 till and overlj'ing formation extend a short distance up the 

 Creek from this point, when they terminate against the 

 U})risiiig ridge of Silurian strata. 



There would seem to be little doubt that the Triassic 

 rocks overl}" the till unconformably. It will now be seen 

 that there are two distinct glacial deposits. Of these, one 

 is overlaid by the Triassic sandstones and conglomerates, 

 and is undoubtedly an ancient till, or moraine profonde ; 

 the other overlies the Triassic rocks and is similar to the 

 lower till, except that it is not so hard nor so traversed by 

 joints, which is hardly a matter for surprise. 



Numerous well striated stones and boulders are scattered 

 ovei' a great part of the suifoce between the Ballarat 

 Road and the Myrniong and Werribee streams, up 

 to an elevation of over 11 00 feet above the sea. These 

 stones can be traced flanking the ridges that overlook the 

 Wenibee. At a point opposite the Gorge, at the lower end, 

 the stones are especially numerous and very well sti'iated. 

 In addition to the commoner varieties, a hard semi- 

 crystalline sandstone, of a dark pink colour, occurs. 

 The stones here overly the Triassic .sandstones, and can be 

 traced along a small lateral gully right down to the 

 Werribee. The de[iosit from which they come is exposed at 

 various points along this gully, and is quite similai' in its 

 unstratitied nature, and in the irregular arrangement of the 

 included stones to that described before. In places it presents 

 a ver}- hard texture, sometimes somewhat resembling the till 

 below the Triassic rocks, in other places it is softer, but in 

 seveial places where its junction with the underlying sand- 

 stones could be seen, it was so invariably hard and thick 

 that we could not clear any away so as to expose the under- 



