OARBONIFEROU.S ROCKS OF THE SOUTHERN HEMISPHERE. 267 



seems now further to justify the retention of the term Permo- 

 Oarboniferous. 



Question 3. If a general local name is to be given, the name ' Hun- 

 terian ' (from the type-area of the Hunter Eiver) has a prior claim, and 

 probably a stronger claim than any other, as (a) It was suggested for 

 this application by the late Professor Ralph Tate (' Eeport Australian 

 Association for the Advancement of Science for 1900,' published 1901, 

 p. 63 of his Presidential Address), and (b) The Hunter area is the first 

 type-area in Australia (that is an area where the whole system from 

 basal Glacial beds to top of the Newcastle series are developed) to be 

 described. This description has been given by the Eev. W. B. Clarke 

 (' Sedimentary Formations of New South Wales,' &c.). 



As regards the term ' Inman Series,' if it is intended to restrict it 

 entirely to the Glacial stage of the Permo-Carboniferous system there 

 are no serious objections to its use, but it seems to me that — 



(a) in view of the fact that no fossils whatever have as yet been 

 found in these beds, and 



(5) that the former Government Geologist of South Australia 

 (H. Y. L. Brown) was of opinion that the beds were of 

 Mesozoic age, and that the present Government Geologist 

 (L. K. Ward) still questions their age as being Permo-Carboni- 

 ferous {v. his Geological Map in ' Handbook of South Aus- 

 tralia ' prepared for the B.A.A.S. visit in 1914) and in view- 

 also of the fact that 



(c) there is more than one Glacial horizon in the Permo-Car- 

 boniferous system 



— it would be distinctly preferable to use the terms ' Inman, ' ' Bacchus 

 Marsh,' ' Wynyard ' stages or series, "' Lochinvar ' stages or series, 

 ' Lyons Conglomerate ' stage, etc. , for local developments of the basal 

 Glacial beds. (Personally my opinion is that the Hallett's Cove and 

 Inman Valley beds ai'e undoubtedly to be correlated with those of 

 Bacchus Marsh.) 



Question 4. In regai'd to the contemporaneity of the Permo-Car- 

 boniferous Glacial beds in various parts of the Commonwealth, 

 there can, in my opinion, be no question that the Bacchus Marsh and 

 Wjmyard Glacial beds were absolutely contemporaneous. They both 

 conformably underlie Gangamopteris beds, respectively at Bacchus 

 Marsh Gangamopteris Sandstone Quarry, and between Wynyard and 

 Preolenna (in North- Western Tasmania). Even individual tillite beds 

 can, I think, be correlated with one another, in the cases of Bacchus 

 Marsh and Wynyard. The Inman and Hallett's Cove Glacial beds, in 

 spite of the absence of fossils, can, I think, be quite safely considered 

 as contemporaneous with those of Bacchus Marsh and Wynyard. The 

 Lochinvar stage or series of New South Wales, like those of Bacchus 

 Marsh and Wynyard, underlies Gangamopteris-hearing strata and 

 graduates downwards conformably, at Seaham and the Paterson area 

 in the Lower Hunter District of New South Wales, into the tuffaceous 

 shales containing Aneimites (Rhacopteris). In fact C. A. Siissmilch 



