AT BLACK YEN, NEAR LYME EEGIS. 27 



Mr. Meyer stated that he had not been so fortunate in his visits 

 to Black Yen as to find the bottom beds of the Cretaceous un- 

 covered ; nor had he succeeded in finding fossils in the sand above 

 the Gault. He agreed with Mr. Downes that the Blackdown beds 

 represent the whole or part of the Gault. He himself had thought 

 at one time that the Blackdown beds might represent the Gault and 

 Lower Greensand ; but he had now been led to conclude that the 

 supposed Lower-Greensand fossils from Blackdown were really of 

 different species. 



The Author was inclnied to regard the Blackdown beds as being 

 rather Upper Greensand than Gault ; but he did not think the 

 distinction of Gault and Upper Greensand could be made out in 

 the western extension of those Cretaceous deposits. The term 

 *' Gault " had been used in the paper to signify the black argillaceous 

 bed, and not as a time-limit. There were certainly many Gault 

 forms in the Blackdown beds. 



