92 PROF. J. PRESTWICH ON THE RELATION OE THE 



ferent menhal groove from anyone working northward from the 

 soutliern part of Suffolk. Both may be locally right ; but it does 

 not follow that either must be right generally ; at all events the 

 variety of opinion that has been evolved is rather bewildering." 

 This must be my apology for the present digression. 



In his memoir of 1884 Mr. Whitaker records the occurrence in the 

 highest part of the Westleton shingle at Henham of a band of iron- 

 stone with casts and impressions of shells ; but the species are 

 not named. He likewise announces the discovery of fossils — in the 

 iSouthwold area — of this age, in one case in a pit on the Lowestoft 

 lioad, two thirds of a mile N.N.W. of Southwold Church, and in 

 another in the railway-cutting near the station (p. :^9), and gives 

 lists (p. 85) of the species, on the authority of Mr. W. M. Crowfoot 

 and of Mr. 8. Y. Wood. I am not, however, quite satisfied that 

 these shells, or at least all of them, belong to the Westleton beds. 

 As this is a point of considerable interest, I give the species in 

 the Table at p. 93 for the purpose of comparison with those of other 

 localities. 



In the first-named locality casts and impressions of shells were 

 found in an iron-concreted portion of the shingle, whilst at the 

 bottom of the pit actual shells were found. In the second localitj'" 

 the shells occurred in a lenticular mass, 6 inches thick and about 

 5 feet deep, in a cutting 7 feet in depth, and in another small patch 

 about 12 yards northward. It appears to me, however, possible that 

 some of these shells may belong to the Upper Crag (the Chilles- 

 ford Sands) ; for the Chillesford Clay has been much denuded*, so 

 that the Pebble Beds often come into juxtaposition with the Upper 

 or Pluvio-mariae Crag. A little north of Southwold, the clift' section, 

 in fact, shows the pebbly (W^estleton) beds in contact with yellow 

 sands of this age, owing to the removal of the Chillesford Clay. It 

 may be therefore that the lower part of the sections belongs to the 

 Crag, or that the shells are derived from it. 



The following are the species mentioned by Mr. Whitaker as 

 occurring in the above-named places. To these I have added a 

 column for the species enumerated by Mr. H. B. Woodward from 

 the typical Bure-Crag localities of Belaugh and Wroxham, although 

 even there, I think, there is some uncertainty whether the latter 

 beds are free from intermixture with the Pluvio-marine Crag. It 

 must, however, be borne in mind that the range and location of 

 species in the Crag are extremely variable. 



* Mr. Whitaker mentions that the Chillesford Clay is wanting in places near 

 Southwold, probably having been cut oif by the Pebbly Beds {pp. cif. p. 62). 

 It was wanting also in the Southwold well, where the underlying Crag was 

 iossiliferous. 



