Vol. 59.] 



OSSIFEROUS CAVERN AT DOVEHOLES. 



127 



as to cover the south-eastern corner of Kent and the region of Calais. 

 He has also proved that the sea extended at this stage in the Pliocene 

 from Normandy (Coteutin) to Cornwall (St. Erth), leaving a barrier 

 of land between these two areas which would allow of the migration 

 of the mammalia. He leaves the distribution of land and water in 



Fig. 10. — [The heavy black line marks the Pliocene shore.] 



the British Isles in the Upper Pliocene Age practically as it was 

 before. In the accompanying map (fig. 10) I have reproduced that 

 of 1880 with the necessary correction. 



The margin of the Upper Pliocene sea, on the eastern side of 

 Britain, is marked by the marine Upper Crag-deposits of Norfolk, 



