137 



ON THE CONCHOLOGICAL FEATURES OF THE LENHAM 



SANDSTONES OF KENT 



AND THEIR STRATIGRAPHICAL IMPORTANCE. 



( Concluded from page Il8). 



By R. BULLEN NEWTON, F.G.S.,^ 

 OF THE British Museum. 



(Presidential Address delivered at the Annual Meeting, October i6th, 1915) 



In accordance with these views, therefore, the following synopsis 

 of the various geological horizons referred to is now proposed : — 



Recent 

 Post-Pliocene 



Pliocene 



Upper Miocene 

 or Messinian 

 (=Pontian or 

 Mio-Pliocene) 



Middle Miocene 

 ( = Vindobonian) 



British and Mediterranean Seas 



Glacial, etc. ... 



Norwich Crag 



Red Crag (=Astian of Italy and 

 Scaldisian of Belgium) 

 ' Coralline Crag 



Diestian 



St. Erth Beds (Cornwall) 



Lenham Sandstones ... 



Anversian (^" Crag Noir 

 Edeghem and Antwerp) 

 , Upper Miocene 



Redonian (=Tortonian or An 



versian) 

 Box-Stones {^Bolderian of 



Belgium) ... 



Britain 



Belgium 

 Britain 



of \ 



j Belgium 

 Germany{N.) 



France (N.W.) 

 Britain 



Helvetian-Tortonian 



Lower Miocene / 



Italy ; Vienna 

 Basin; Holland; 

 Denmai"l<, etc. 



Burdigalian ... ... ... France (S.W.) 



\. Aquitanian ... ... ... Italy. 



Lastly, I may mention that in 1907 I was favoured with a visit from 

 the late Prof Dr. Gottsche, Director of the Hainburg Museum, and 

 one of the chief authorities on the moUuscan fauna of the North Ger- 

 man Miocene deposits, for the purpose of examining the Lenham 

 Collection of the Museum of Practical Geology, which was then in 

 my keeping at the British Museum ; he was specially interested in 

 some S[)eciinens referred to in Mr. Reid's memoir as an elongated 

 variety of Triioti heptagv/iu?}! ?, being confident that they represented 



I Published by permission of the Trustees of the British Museum. 



FooTNOTK. — While the last fasciculus of this work is being passed for press, the author has 

 most regretfully to announce the death of Mr. Clement Reid, F.R.S. , which took place on 

 Sunday, December loth, 1916, in his 64th j'ear. Mr. Reid was for many years on the staff 

 of the Geoloiiical Survey of England, and during his career had written many memoirs on 

 geological subjects. So far as we are at present concerned, it may be stated that his name will 

 be for ever inseparably associated with the history of the Lenham Beds as described in his 

 "Pliocene Deposits of Britain." 



