354 THE PLEISTOCENE PEKIOD. 



but an accidental association. The same black band was seen 

 to exist also at Vazon and here again on the 25 feet beach. 



This caused me to look for confirmations and correla- 

 tions. 



A strengthening of the fact has been obtained by the 

 finding of the band at Fort Le Marchant during military 

 work. Hence the old land surface is well established here. 



In Jersey, on the authority of Mr. J. Sinel, a band of 

 sand (colour not given) occupies the same position. Dr. Hoist 

 draws attention to this old land surface and quotes Austin as 

 follows (without any knowledge of the Guernsey find, the 

 article quoted was published years earlier) : " We may recall the 

 fact that Godwin-Austin observed a black band, or in other words 

 an old land surface, between the pre-glacial 'raised beach' at 

 Sangatte and the super-jacent layer which belongs to the 

 glacial depression ; this surface would imply, at any rate, a 

 short break in the sinking of the land." 



Sir J. Prestwich describes the old beach at Barnstaple in 

 the following words : " Overlying the old beach . . . are blown- 

 sands ... or old dunes driven in from the shore after the 

 uplift of the old beach." Again, he says, "A special feature 

 to notice in connection with the raised beaches from Land's 

 End to North Devon, is the frequent occurrence of dunes, 

 over the beach and under the Head. These sands . . . are 

 very commonly concreted." He remarks that the sands prove 

 "that after the formation of the beach, the coast must have 

 undergone sufficient elevation to raise the beach above the 

 wave-action." We have such sands under the Head at 

 Divette ( Transactions, 1912, fol. 411, 376), but I looked upon 

 them as merely small pockets of the sands of the old beach. 

 Now, in view of the sands described which are in places 

 20 to 30 feet in thickness, and with the evidence of the black 

 band, I see that they support the rise of land. Additional 

 local evidence is to be derived from the lately discovered 

 submerged beaches at Vazon, &c. 



On several excursions of the Society (see Transactions, 

 1910, et seq.) there have been found patches of submerged 

 beach in the bays, which the members were unwilling to accept 

 as a separate beach level. The evidence accumulated, however, 

 and now the level is to be found in Pour different places — at 

 Vazon, Lihou, Pleinmont and the Braye-du-Valle. These 

 are difficult to find, two being known by the digging of wells, 

 and two easily mistaken for the old 25 feet beach as it rests 

 on rock at the foot of the present beach. This very fact 

 should have attracted attention as the lowest portion of the 



