174 PROCEEDINGS OF SECTION C. 
in the Newcastle coal series, and probably something 
analogous between Mesozoic and Cainozoic.” 
It would be easy to quote other authors te show that it is 
possible io bring our larger groups of strata approximately 
mto line with those of Europe, while at the same time in- 
consistencies occur which are apt co cause perplexity. 
THe CoRRELATION OF Minor SUBDIVISIONS. 
Wher we come to the consideration of the possibility of 
comparing the minor subdivisions cf the great periods, these 
difficulties increase in direct ratio as our classification be 
comes more derailed. 
M‘Coy, true to his belief in universal faunas in the older 
epochs, recognised in Victoria representatives of the British 
Llandeilo, Bala, Wenlock,~ May Hull, Upper Ludlow, 
Keuper, and Bunter, as well as others. But it must be 
borne in mind that che correlation was founded, im some 
instances at least, on the occurrence of a single imperfect 
plant, the very nature of which has subsequently been called — 
into question, and in other cases on some two or three marine 
fossils. 
Other authors, with larger collections at their disposal, 
have been more cautious, as, for instance, Mr. R. Etheridge, 
jun., who is content co refer the Bowning beds doubtfully 
to Wenlock age. 
The madvisability of usmg European names for our geo- 
logical formations has been ‘treated at some length by Mr. 
Pritchard (Pritchard, ’00), and with his conclusions I am 
in complete accord, 
The Hifficuity of correlation, as we have seen, is caused 
eps y by che want of concordance m range of certain fossils, 
to use a term, without any intention of implying moral 
abnaiey ike Transgression of Fossils. 
TRANSGRESSION OF FOSSILS. 
Difficulties of classification of strata due to this cause are 
by no means confined to Maeno and a few instances may 
be noticed. 
OCidgam (Oldham, ’$3,p.191) says—“ The obvious method 
of deteriaining the age of the. cock -groups of Gondwana by 
direct comparison of “the fossils they contain with those of 
Europe leads to very unsatisfactory ands inconclusive results.”’ 
On the following page he gives, on Feistmantel’s authority, 
the alliances shown by the plants. In the Rajmahal series, 
for instance, the European representatives range from Per- 
misn to Oolitic, while the series is regarded as Liassic. The 
