being found in the Eocene (Tate and Dennant) of South 

 Australia, Victoria, and Tasmania '(Table Gape); and in the 

 Miocene (?) of South Yarra and Moonee Ponds, and the 

 Pliocene of South Australia (Dry Creek Bore). From this 

 it will be seen that this type of Lima is not of great strati- 

 graphic value in the absence of a series of short-lived species. 



"3. Associated with these are Hippouijx el', australh, Q. 

 and G., Turritella (sp. ind.), 'tHemitlujris (somewhat like 

 H. colourus, Hedley), shell debris, Polyzoa (Retepora etc.) 



"The general appearance of the shell limestone is rather 

 that of a rock resulting from sedimentation at some distance 

 from land than of a shore deposit. Though there is nothing 

 definitive in the small collection we are inclined to group 

 the beds with those at Cape Finn and Table Cape, which it 

 lias been the custom to regard as Eocene, as understood by 

 Tate, though it is probable that renewed examination in 

 the light of greater knowledge may tend to place them 

 higher in the Tertiary." 



Palaeozoic— Early Palaeozoic rocks are extensively 

 developed on the island, and may be said to form the 

 plateau of which the granite massifs are the buttresses. 

 Since they are apparently unfossiliferous and their age has 

 so far been determined on lithological evidence only, it 

 becomes important to study their petrological characters 

 rather fully, to afford data for comparison with other 

 localities. The rocks developed include quartzites, slates 

 and phyllites, mica- and garnet-schists, actinolite-schists, 

 granulites, porphyroids, and conglomerates. They are a 

 much altered series of rocks, and the metamorphism they 

 have undergone has rendered it difficult to trace their true 

 origin in many cases. They are on the whole very regularly 

 bedded and in places even the smallest laminae are clearly 

 marked and can be traced for considerable distances. In 

 the neighbourhood of some of the intrusives, however, and 



