162 Proceedings of the Royal Society of Victoria. 



placed in the Cretaceous. The latter view is certainly the most 

 reasonable, and appears to be the most worthy of acceptance, 

 provided these general terms are ultimately accepted for use by 

 colonial geologists. 



The next term that attracts attention is Trias-Jura used in the 

 Geology of Queensland by Messrs. Jack and Etheridge. These 

 authors remark^ — " This Series is of the utmost importance, 

 because it contains the chief workable coal-seams in Queensland, 

 or at least the principal seams at present worked. The organic 

 remains are principally those of plants, with a strong Mesozoic 

 facies, and oscillating, in all probability, between the Trias and 

 Upper Oolite in age." 



The Kev. J. E. Tenison Woods in his " Fossil Flora of the 

 Coal Deposits of Australia " has, as already remarked by the 

 above-mentioned authors endeavoured to refer many of these 

 plants to horizons corresponding with those of their nearest 

 allies of Europe and elsewhere, and in this way has accounted 

 for the presence in Queensland of the Trias (?), Rhaetic or Lower 

 Lias, Upper Lias and Jurassic. Messrs. Jack and Etheridge then 

 state, " But our knowledge of these plant-beds is too young at 

 present for such minute subdivision, and we know far too little of 

 the association of the species one with the other, and the similar 

 relation of their respective matrices, to assign minute geological 

 horizons, on the chance of a mere guess, or hasty generalisation, 

 turning out correct." 



The term Jura.Trias has been used for certain Strata by some 

 American geologists, but, according to Mr. R. S. Tarr,^ " the term 

 Newark is now used by the United States Geological Survey to 

 include the strata of the eastern states, which were formerly 

 called Triassic. The Jurassic and Triassic periods are not well 

 developed in America." 



In the Palaeozoic we may first note a marked tendency to drop 

 the term Permian out of the systems altogether, for even such an 

 authority as Professor Nicholson, though including in his general 

 classification the Dyas or Permian System remarks,* " The 



1 Op. dt., p. 313. 



2 Economic Geolog-y of the United States, 1894, p. 47. 



3 Manual of Palaeontologj'. Nicholson and Lydekker, 3rd edition, vol. i., p. 42. 



