Abstract
In 1874, whilst searching in the Boulder-clays south of Bridlington, on the Yorkshire Coast, for transported fossils, I was greatly surprised to find a few water-worn fragments of shells dispersed through the clay at the base of the cliff, inasmuch as all the writers on this subject agree in assigning to the Yorkshire Clays “no contemporaneous shells whatever,” that is to say, no shells actually coeval with the deposition of the clay.

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