142 Geological Society . s — 



of this interpretation with Mulct's theory of volcanoes is also 

 indicated, and the author concludes by applying these views to 

 other branches of terrestrial physics. 



June 5 — Prof. J, W. Judd, F.R.S., Vice-President, 

 in the Chair. 



The following communications were read : — 



1. " Observations on some undescribed Lacustrine deposits at 

 Saint Cross Southelmham, in Suffolk." By Charles Candler, Esq. 



2. " On certain Chelonian Remains from the Wealden and Pur- 

 beck." By R. Lydekker, Esq., B.A., F.G.S. 



3. " On the Relation of the Westleton Beds or Pebbly Sands of 

 Suffolk to those of Norfolk, and on their Extension inland." By 

 Prof. Joseph Prestwich, M.A., D.C.L., F.R.S., F.G.S* 



Fart L 



The author in this, the first part of his paper, described the 

 Westleton beds of the East Anglian coast. He commenced with a 

 review of the work of previous writers, especially Messrs. Wood and 

 Harmer, and thcmembers of H.M. Geological Survey, including Messrs. 

 TL B. Woodward, Whitaker, and Clement Reid. In discussing this 

 work, particular attention was paid to the Bure-valley beds, which 

 were considered as a local fossiliferous condition of the Pebbly Sands ; 

 but the term is not so applicable to these sands as that of the 

 " Westleton and Mundesley Beds," which the author proposed in 

 1881. 



The Westleton beds were carefully described, as seen in coast- 

 sections in East Anglia, proceeding from south to north, and the 

 following classification was adopted : — 



The Westleton 



and Mundesley 



series 



The Forest-bed 



series of Reid 



(exclusive of No. 3 



of above) . 



Laminated clays, sand, and shingle with plant-re- 

 mains and freshwater shells (the Arctic forest-bed of 

 Reid. 



Sand and quartzose shingle with marine shells (the 



(The Mundeslev ^ Leda myalis bed ° f King and Eeid) ' 



1 ,, f 'f\ I 3. Carbonaceous clay and sands with flint-gravel and 

 section ot \i). pebbles of clay, driftwood, land and lacustrine shells 



^ and seeds (the Upper freshwater bed of Reid). 



f 4. A greenish clay, sandy and laminated in places, con- 

 taining abundant mammalian remains, and drift- 

 wood, with stumps of trees standing on its surface 

 (the forest- and elephant-bed of authors ; the estua- 

 rine division, in part, of Reid). 

 5. Ferruginous clay, peat, and freshwater remains and 

 \ gravel (the Lower freshwater bed of Eeid). 



The Westleton beds were found to rest with discordance on 

 various underlying beds ; in places on the Forest series, elsewhere 

 on the Chillesford Clay, whilst occasionally the latter had been 



