Vol. 69.] DERIVED CEPHALOPODA OF THE HOLDERNESS DRIFT. 183 



the strata, if these researches were extended over the whole of the 

 transported fossils. The speaker strongly hoped that the Author 

 and his colleagues would continue the work so excellently begun. 



Mr. 11. S. Berries said that he had listened to the paper with 

 much interest. He did not know the Holderness Drifts, but had 

 collected many specimens from Filey Bay. The blocks containing 

 Ammonites semicostatus, found on the Buclclandi reefs in Bobin 

 Hood's Bay, he believed to have been washed up from reefs farther 

 out to sea. The comparative scarcity of Oolitic ammonites in the 

 drifts was accounted for by their being poorly represented in the 

 Yorkshire Oolites, except the Kellaways Bock which was a friable 

 deposit not easily preserved. 



The Author, in briefly replying, thanked the Fellows for the 

 reception given to his paper. In answering Mr. Herries's remarks, 

 he stated that there was still no evidence that blocks witli Am- 

 monites semicostatus had ever been found in situ in Bobin Hood's 

 Bay. 



J. G. S. No. 274. 



