CARBONIFEROUS ROCKS OF THE SOUTHERN HEMISPHERE. 281 



Permo-Carboniferous to Carbo-Permian, but suggests that the term 

 Hunterian series might be used for all the marine and lacustrine develop- 

 ments in Australia, and that the term Inman series should be used for 

 the products of land glaciation, while, if an aboriginal name for the 

 latter series be thought desirable, the term Eamin'yere is appropriate. 

 Professor Woolnough objects to the use of the term Permo-Carboni- 

 ferous on the grounds of lack of proof of homotaxial relations with 

 similar rocks in other parts of the world. He prefers a general Austra- 

 lian name, and says Hunterian should be chosen for reasons stated above 

 by Professor David. Professor Sheats maintains that Permo-Carboni- 

 ferous is an appropriate general name already in wide use and expressing 

 the admixture of certain Carboniferous types with a Permian fauna and 

 flora. He does not agree to the use of a single Australian name, as 

 the special developments vary in different areas — in New South Wales 

 being mainly marine and lacustrine, in Victoria mainly fluvio-glacial 

 with several tillites, and in South Australia tillite, the product of land 

 glaciation, is largely represented. He thinks it is premature to suggest 

 a local Australian name (comparable with Dwyka in South Africa) to 

 indicate the dominant tillite horizon, since in some States two or more 

 horizons are known, and in South Australia the horizon is inferred and 

 not proved. 



4. In respect to the question whether the prominent glacial con- 

 glomerate is always on the same geological horizon in Australia, there 

 is general agreement that the probabilities are in favour of this view, 

 while it can in most cases not be proved but only inferred. Professor 

 David points out that the Glacial series of Wynyard in Tasmania, 

 of Bacchus Marsh in Victoria, and of Lochinvar in New South Wales, 

 can be correlated; that in Western Australia the Glacials contain 

 Permo-Carboniferous fossils and underlie rocks containing some Car- 

 boniferous types. Mr. Howchin maintains the inference that the South 

 Australian Glacial series are of the same age as elsewhere in Australia. 

 on lithological similarities, and because there is no other known Glacial 

 horizon with which they can be correlated. Professor Woolnough 

 believes that the lower main Glacial phase is probably everywhere on 

 the same geological horizon, and that where differences of age are 

 indicated in Glacial beds in higher parts of the series they may be 

 the effects of local glaciations. Professor Skeafs believes that the 

 lower prominent Glacial series is probably everywhere contempo- 

 raneous, though in several areas this cannot be proved, but may be 

 inferred for the reasons suggested by Mr. Howchin. 



5. In respect to the question as to whether the correlation of Permo- 

 Carboniferous rocks in different parts of the world suggested in the 

 correlation prepared by Professor Skeats is probably correct. Professor 

 David agrees generally with the correlation, but amplifies it. He 

 quotes evidence given by Amalitzky that in Eussia the Gavgamopteris 

 flora is associated with marine Permian types, while the Squantum 

 tillite of America appears to be, but has not yet been proved to be, post- 

 Upper Carboniferous in age. Mr. Howchin has not discussed this or 

 the later questions of correlation. Professor Woolnough agrees gener- 



