Yol. 54.] COKALLIAN EOCKS OF UPWAEE. 619 



It was obvious that if there was any analogy with other parts of 

 England, and especially Yorkshire, the oolites of the northern pit 

 must be older than the Rag of the southern pit. But one of the 

 most interesting features of this paper was the announcement that 

 the oolite immediately underlying the Rag in the southern pit is to 

 be regarded as an intermediate series, having a fauna approaching 

 that of the Rag in an oolite-matrix. He was perfectly prepared to 

 accept this interpretation, as very much the same occurrence is noted 

 in the upper part of the Coralline Oolite of Malton — an additional 

 resemblance to the series in Yorkshire. 



The fossils found in the northern well seem to tally with those in 

 the northern pit, and indicate a Lower Oolite as distinct from the 

 intermediate Oolite of the southern quarry ; but surely this horizon, 

 cannot be accepted as in any sense the equivalent of the Elsworth 

 Rock, although it may be close upon Oxford Clay. 



No one had a better acquaintance with the lithology and palaeon- 

 tology of the Elsworth Rock than Mr. Keeping ; and it was interesting 

 to know that equivalents of this well-marked series had been found 

 at Upware. But again he questioned the value of what appeared to 

 be the conformable sequence, and felt sure that the ammonites of 

 the Elsworth Rock were sufficient to show that it could not be 

 classed as higher than the Lower Calcareous Grit. 



The Rev. J. E. Blake said that he had lately had an opportunity 

 of revisiting the Upware exposures, and found in the southern quarry 

 that much more of the underlying rock and less of the Rag, which 

 was now a mere patch, was at present exposed. The underlying 

 rocks in the southern quarry were not exactly like those of the 

 northern ; but the difference was very slight when compared with 

 the Rag or the so-called Elsworth Rock. He would only add that 

 if the fossils from the rock which had been brought up from the 

 bottom of a well did not, like those of the Elsworth Rock, indicate 

 a distinctly Oxfordian age, then the evidence for the correlation 

 with that rock fell through. 



Prof. Watts pointed out that the Author had shown that the 

 Elsworth Rock at Upware appeared to underlie rocks like those 

 under the Rag of the southern quarry without any apparent dis- 

 cordance, although the possibility of unconformity had been kept in 

 view while examining the section. The deposit seemed to resemble 

 that of Elsworth itself in lithological character and fossils. He 

 regretted that, in reading the paper, want of time had prevented him 

 from stating the whole of the evidence brought forward by the 

 Author. 



The Peesident also spoke. 



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