172 Mr. BowERBANK 071 the London and Plastic Clay Formations, Sfc. 



In the first and second beds from the chalk marl, marked 1 and 2 in the second 

 line of figures, no fossil remains were found, although a careful search was made 

 for them from the beach upwards to nearly the turf-line at the top of the cliff. 

 But upon examining the dark greenish gray coloured sands and clays included in 

 the space numbered 3, 4, 5, and 6, we found in various parts the following well- 

 known species of London clay fossils: Venericardia planicosta, Carditamargaritacea, 



Mya intermedia, Ostrea , Venus , Cardium semigranulatum, Nucula simi- 



lis, N. amygdaloides, Turritella conoidea, T. elongata and T. edita, Murex innexus, 

 Buccinum desertum and Cancer Leachii. The last fossil was found in the dark 

 greenish gray sand near the chalk, and marked No. 3. in the diagram. 



The whole of these specimens present the usual appearances of London clay 

 fossils from Barton, Hampstead, etc. Upon carefully examining the strata of vari- 

 egated sands and clays, extending 252 paces in length, we did not succeed in 

 finding fossils ; but at No. 8, where the London clay again makes its appearance, 

 Nummulites and other London clay shells were found in great abundance. 



