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PROCEEDINGS OE SECTION C. 
SCORED ROCK SURFACES. 
The scored rock surfaces are perhaps the most striking feature 
of the Coimadai district. In August, 1893, we made our first dis- 
covery (in this locality) of these really remarkable phenomena on the 
Pyrete Creek, about a mile below Coimadai. Since then we have 
found the scored surfaces at numerous other points in the locality. 
But we shall in this present paper refer only to the best examples, 
leaving a more detailed description for a future paper, when our com- 
pleted map of the district will be published. At several points along 
the Pyrete Creek sections are exposed, showing the junction of the 
glacial beds with the Silurian, and it is at these places that the latter 
exhibit all the features of typical roches mouionnees . 
An exceedingly good example is to be seen on the Pyrete Creek 
about 1|- miles below the Coimadai township. The stream has here 
removed the glacial drift from the underlying Silurian, which at this 
spot consists of very hard sandstone, and presents the rounded and 
smoothed appearance of typically glaciated rocks. These rocks 
extend over about 70 yards along the left bank of the stream ; the 
middle part, however, being concealed by recent alluvium. In addition 
to the smoothed and rounded appearance very distinct groovings and 
scorings are to be noticed, and in places patches of the drift are still 
to be seen adhering to the scored surface. The direction of the 
grooves and scorings is on the whole a little E. of N.E. As these 
roehes mouionnics form two main masses, we have named them the 
* 4 Pyrete Twins,” for convenience in reference. 
Several hundred yards in a N.E. direction from these the Silurian 
again crops out at a higher level, and exhibits a beautifully scored 
surface. A good deal is covered by turf and soil which could be 
removed with little trouble. A considerable area of rocjie moutonnee is 
developed here. Unfortunately portions of it have been broken up to 
furnish building stone for an adjacent cottage, the owner of which, 
Mr. Wightman, we have requested not to further disturb this really 
splendid example of a glaciated surface. This we have named 
Wightman’s Rock.” Both here and in the case of the Pyrete Twins 
the scorings correspond in direction neither with the strike nor the 
dip, but lie between the two. 
About a mile further down the creek is a section showing the 
glacial conglomerate, which here looks exceedingly like till, overlying 
the Silurian. The latter is again well scored and grooved, the direction 
being about N.E. In a small gully running parallel with the road to 
Melton, half a mile out of Coimadai, another well-scored surface can 
be seen, the directions of the scorings there being N. 35° E. 
Numerous other examples also occur, but the abovemention ed are 
the best. Speaking in general, wherever- the contact of the glacial 
drift with the Silurian can be observed, the latter is almost invariably 
scored and striated in a manner that could have been done only by 
glacier or land-ice moving in a direction from S.W. to N.E. 
DIRECTION 6F ICE FLOW. 
The direction, of motion of the ice as indicated in the Coimadai 
district — namely, from S.W. to N.E. approximately — is quite in accord 
with Mr. Brittlebank’s observations in the Bacchus Marsh and Myr- 
miong districts. The direction at Coimadai, however, .seems to have been 
