468 Notices of Memoirs — T. S. Hall — Victoria Grcqjtolites. 



conditions at the time of deposition drawn chiefly from the internal 

 evidence of the sandstones. The coal-beds associated with the series 

 were described in detail. 



5. Recent. A brief description, of the only other sedimentary 

 deposits yet found was given, they consisting chiefly of local beds of 

 volcanic tuffs and some moraine deposits. 



The paper concluded with a brief sketch of the history of South 

 Victoria Land as compared with that of the South American Quadrant 

 as recorded by their respective sedimentary deposits. 



(5) Victoria. Gkaptolites. By T. S. Hall, M.A., D.Sc, Lecturer 

 in Biology in the University of Melbourne. 



rpHE Silurian and Ordovician graptolite-hearing rocks of Victoria 

 I occupy about 20,000 square miles, and over a hundred species 

 have been recorded. 



Very little is known of the Silurian. The Ordovician is divided 

 into Upper and Lower, but probably represents a continuous series. 

 The Upper is characterized by the presence of Dicranograptidse. No 

 zonal work has been done in the field, though collections yielding 

 about fifty recorded species have been made. 



Four divisions are recognized in the Lower Ordovician, namely, 

 Darriwillian, Castleraainian, Bendigonian, and Lancefieldian, at the 

 base. There are several subdivisions of these formations. The 

 characters were briefly indicated in the Geological Magazine by 

 the author in 1899. Subsequent work by T. S. Hart, F.G.S., at 

 Daylesford, has confirmed the sequence established. Large collections 

 made by the Survey at many localities have somewhat extended our 

 knowledge of the fauna and its distribution, but without adding any 

 features of great importance. 



The Upper Ordovician ranges north from Eastern Victoria for 

 300 miles into New South Wales. In New Zealand Lancefieldian 

 occurs at Preservation Inlet, and two Castlemaine zones occur as well. 

 It is probable that the Victorian sequence, and not the British, as 

 stated, will be found. 



Broadly, the sequence of Australian Graptolites agrees with the 

 European, but in details is closer to that of New York, as Ruedemann 

 has pointed out. The important differences in the range of JDidymo- 

 graptus hifidus, D. caduceus, J), nicholsoni, Loganograptus, Clonograptus 

 rigidus, and some other genera and species negative the idea that 

 graptolite zones are world-wide, and as no one believes that all genera 

 and species originated in one locality and radiated thence this is 

 what we should expect. 



(6) On the Tekm Permo-Cakboniferous and on the Correlation 

 OF that System. By W. S. Dun and T. W. Edgewoeth David. 



rilHE term Permo- Carboniferous was originally applied to certain 



JL formations in Queensland which on stratigraphical evidence 



were at the time considered to belong to one and the same general 



system. At the time it was considered that a series of strata at 



i 



