Remarks on the Eocene Rocks of Victoria. 155 



from the two localities. Messrs. Tate and Dennant say they 

 have 649 from Muddy Creek. We believe that we have 326 

 from the lower beds at Spring Creek. Basing our calculations on 

 these figures, we get about 10 per cent, passing up at Sj^ring 

 Creek and about 10*5 at Muddy Creek, a result which is of little 

 value one way or the other. 



We must admit that we were incorrect in grouping together 

 the polyzoal limestones we mentioned in our paper, and that they 

 propei'ly should be associated with the molluscan beds and worked 

 out by their aid. The echinoderms, brachiopods, and pectens, 

 which constitute the bulk of the larger fossils they contain, are 

 practically the same in the beds we specified. But when, as at 

 Upper Maude, we have gastropods and lamellibranchs other than 

 pectens associated with them, we are, as pointed out by Messrs. 

 Tate and Dennant, on surer ground. Last Easter we were fortu- 

 nate in finding a block of limestone in the quarry debris at 

 AVaurn Ponds, which contained, amongst other forms, lamelli- 

 braneh casts similar to those we recorded from North Belmont, 

 and which induced us to place the latter deposit on the same 

 horizon as Spring Cx'eek. Upon the evidence of the brachiopods, 

 echinoderms and pectens we associated the Upper Maude beds 

 with those of Waurn Ponds, but at the same time mentioned 

 that the gastropods from the Clyde section really corresponded 

 with those from calcareous clays overlying and interbedded with 

 the polyzoal limestone at Batesford, and it is consequently with 

 the latter and not with the Waurn Ponds series that the Upper 

 Maude beds should be associated. The Batesford limestones are, 

 it will be remembered, in turn overlain by the richly fossiliferous 

 clays of the Southern Moorabool valley (13). 



As a correct reading of the Spring Creek section has an impor- 

 tant bearing on the whole question, we may briefly restate the 

 opinions that have been held on the subject. Daintree, who had 

 charge of the survey party in the district, at first recognised two 

 divisions in the beds, the upper comprising everything as far 

 down as the hard band, which we identify as that forming the 

 top of Bird Rock. He distinguished them in his report as Upper 

 and LoAver Miocene (11). A short time afterwai-ds the coralline 

 or polyzoal limestone, which he regarded as passing over the top 

 of the clays and sands, was separated from the lower beds, and a 



