1916.] PRE-GLACIAL DEPOSITS. 359 



The rubble found under the raised beaches in places, as 

 at Belcroute Bay, Jersey, may be taken as an indication that 

 the sea-level was rising because an undercutting of the cliff 

 must have been in progress to cause the fall. Such rubble 

 deposits are to be found under the beaches wherever there is 

 enough height of cliff. Besides the example above given, 

 one may be given for the island. This will be found, when an 

 opening occurs,* at the Garenne at Anneville. 



Another type of deposit is a marine sand. This will 

 always be found below the beach with which it is associated. 

 An excellent example exists at 1'Ancresse. At the Vale 

 Church there exists a very large 25 feet beach, but it is not 

 above ground, and therefore is but little studied. 



On the North side of the hill on which the Church stands is 

 a new cemetery, the graves of which are dug out of and 

 through the beach deposit ; overlying the beach is a thick 

 deposit of white sand of old date, that continues upwards 

 until it comes in contact with the aerial deposits of the 50 feet 

 beach. This upper beach has disappeared as far as I can 

 determine, but it can be localised by the sea-washed rock 

 which is found on the West side of the Church. These 

 deposits have sea-sand below them quite different in kind from 

 the white sand which is over them. 



At Mont diet there are intermediate beds which well 

 illustrate these links between the more evident deposits and 

 show continuity of deposition. Here the 25 feet beach is 

 immediately folloAved by the clay which underlies the 50 feet 

 deposit, and so closely does the upper beach rest on the whole 

 that for years I looked upon the two as one. This was 

 rendered impossible by my discovering the limit of the lower 

 beach at Courtil Bas. Above these are sandy soils slanting 

 upwards, then an abrupt rise of rock and a deposit of the 

 ,75 feet beach. (The later is not far from the house at the top 

 of the hougue.) 



At La Cotes quarry the 25 feet level is represented by an 

 out-crop of sea-washed and smoothed rock which has been 

 completely covered by sand and clay (the same as at Mont 

 Cuet), and above is the remnant of the 50 feet beach which 

 tops the hill. The sea-worn rock has been buried beneath 

 these deposits, and being loose grained and macrocrystalline 

 has disintegrated and has given rise to pockets of coarse gravel 

 in the clay and sand. This would be difficult to explain but 

 for the fact that the included stones are found, in sitzi, in all 



* While this paper was in the press a well was opened off the Anneville Road 

 between the Capelles and Anneville, which fully confirms this forecast. 



