Pr<H'eedii)(js of the Royal Society of Victoria. 267 



was evidence of two glacial epochs, it certainly did 

 se<'in upon examination of the specimens and pho- 

 tographs as if there was evidence to show that the 

 bottom member ]iad had a o-lucial origin. There were 

 un<loubted grooves and stria?, and the Silurian rocks 

 were certainly marked as if a plane, with grooves, such 

 as a carpenter would use in his ornamental work, had 

 passed over them. Such was the appearance of rocks 

 which had undei'gone grinding by the passage over 

 them of a glacier. There was a good deal of weight 

 in Mr. Ciesswell's criticism with regard to the rocks 

 having a north and south direction so far as their strike 

 ■was concerned, and the edges of the Silurian rock being 

 uptilted to a high angle, and varying degrees of hard- 

 ness and wearing unequally, and all this would have to 

 be taken into consideration before coming to a liual conclu- 

 sion ; but, nevertheless, looking at the photographs of the 

 portion of the rock that had been uncovered, it certainly 

 suggested a glacial origin for the I'ock to his mind. In the 

 second pla.ce, the boulders in the till were certainly to a 

 large extent striated, and as suggested, appeared to have 

 been de})Osited there by ice. There was also another feature 

 which was favourable to the proposition suggested by the 

 authors, namely, the great variety of rock which was found 

 in this clay bed. Such a heterogeneous collection of rocks 

 collected together in one place without any stratification 

 at all, and most of them more or less striated, was cer- 

 tainly to his mind suggestive of glacial action, and 

 pointed to a glacial origin for the deposit. Then again 

 the rocks were not only varied, but they did not 

 c;)rresj»ond with the rocks in the neighbourhood. If the 

 conglomerate was due to coastal action, it would agree with 

 the rocks found in the locality, but that fact, that this was 

 not the case, indicated that the boulders had been brought 

 some considerable distance ; ;ind it was well known that a 

 glacier does collect rocks in this manner, and that in a 

 coastal conglomerate no such heterogeneous collection of I'ocks 

 is found. 'J'his was another ]x>int in favour of the hypo- 

 thesis of the authors. It seemed to him that the specimens 

 and descriptions all favoured a glacial origin for this bed, 

 but whether one could go further and agree with the authors 

 of the paper, that the bed was of Permian age, was another 

 matter. In arriving at that conclusion, it was necessar}'' to 

 take a number of matters into consideration. In the first 



