EARLIEST EVIDENCES OF MAN IN FRANCE. 83 



The accompanying figure gives a clear idea of the sequence of beds 

 drawn from a photograph which we owe to the kiridness of the Abbe 

 Bonno. 



These gravel quarries are excavated in the Pleistocene or Quaternary 

 gravels and are situated on a plain between 125 and 140 feet in height 



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The Beds at Chelles, containing Prehistoric Flints, Etc. 



above the sea, extending from Chelles eastward to the neighboring 

 village of Brou. The strata underlying the fresh water or river-gravels 

 are greenish clays or marls of marine origin and of Eocene Tertiary 

 age. This marl contains gypsum or plaster of Paris, with crystals of 



