52 Proceedings of the Royal Society of Victoria. 



giiislied fiom boiildei--clay or till. However, it differed from 

 tliose we had yet examined, except the last described, in 

 being so excessively hard and tough, and in being traversed 

 by numerous joints. Till one has actually tried, it is 

 inijiossible to give an idea of the difficulty of extracting a 

 stone from this material, which will ordy come awaj' in small 

 angular fragments, in a manner that is peculia)-!}' exaspera- 

 ting. On the north side of the Creek, a short distance from 

 the junction, a section of a similar deposit is exposed, which 

 pi'esents a somewhat stratified a])pearance ; striated stoiies 

 occur irregularly through this, but they ai-e not so numerous 

 as on the opposite side of the Creek. The appearance of 

 stratification presented may possibly be due to pressuie. It 

 is overlaid by basalt. 



On proceeding up the Weiribee a few yards furtlser on the 

 south side we found a small cliff, where the junction of the 

 conglomerate with the underlying Silurian could be well 

 seen in section. Here was a ])lace wliere, if the conglomerate 

 were a true till, we might expect to find the underlying- 

 rock smoothed and striated, or else shattere<l. The section 

 exposed showed the Silurian rocks rising in a hummocky 

 way, and closely overlaid by the conglomerate. A aloser 

 irispection revealed a certain rounded and facetted appear- 

 ance, that was very suggestive of ice action. Ha\ing found 

 a place where the overlying deposit was thinner than usual, 

 we resolved to clear aw^ay a portion, and after some difficulty 

 and hard work succeeded in laying bare a portion of the 

 rock below. We were amply le warded for our trouble. 

 The Silurian rock presented in a beautiful manner a well 

 sm(.)othed and striated surface, with deeper parallel grooves, 

 all running in a north and south direction, and of the glacier 

 origin of which there could be no doubt whatever. The 

 Silurian strata here dip west, at angles of from 50° to (iO°. 

 So it will be seen that the sti'ata are cut across at right 

 angles to the dip, in fact in the direction of the strike. It 

 is quite impossible that this can be due to the action of the 

 Creek, or indeed to the action of water at all. The strife 

 and grooves point right across the Creek. Tlie contiguous 

 portions of the overlying deposit, when removed, were 

 found to retain perfect mouldings of the grooves and strife 

 beneath. 



This striated and grooved rock surface, taken in connection 

 with the nature of the overlying deposit, leaves no room for 

 doubt as to the glacier origin of the latter, and that it is a 



