In Two papers, read in 1881, before the meeting of the British Association at York, Prof. Prestwich has discussed the structure and distribution of certain deposits which he has called “The Mundesley and Westleton Beds.”inhis opinion they occupy an horizon “between the Chillesford Beds and the Lower Boulder-clay.”My work on the Geological Survey in Norfolk has, however, led me to conclusions that differ in important particulars from those of Prof. Prestwich, and chiefly in the correlation of beds in several localities. As his papers have at present been published only in brief abstract, it is not possible to criticize them with justice to the author; but as a year has now elapsed since the conclusions were made known, I may be pardoned for submitting my own views for discussion at the present time.