in the Sontli Englislt Chalk. 455 



ft. in. 



Brought fonvarcl . . 195 9 



Chalk 2 



Marl seam. 

 Chalk 16 9 



Marl seam. 

 Chalk 2 9 



Marl seam passing just south of angle A. 

 Chalk with three marl seams . . . . . . 16 8 



Marl seam. 

 Chalk with Tercbratulina Ro^vci, presumably in subzone of 



abundant O. pihda ........ 7 



Marl seam. 

 Chalk with three marl seams . . . . . . 22 



Marl seam. 

 Chalk, perhaps basement bed of subzone of abundant 0.2Ji?«Za 1 



Marl seam. 

 Chalk with E. scutatus, var. depressus, and rectangular 

 Crateraster qtdnquelobn , forming strongly marked face in 

 the third promontory ....... 6 



Marl seam. 

 Chalk with one marl seam ....... 3 8 



Marl seam. 

 Chalk 16 6 



Marl seam. 

 Chalk to extreme foot of third promontoiy . . . . 9 



299 1 

 My starting-point was probably in qiiadratus chalk, as I found 

 a specimen of A. quadratus about VI feet below it on my first visit. 

 The specimen was partly exposed by weathering, and the granulations 

 on it were plainly visible to the naked eye. I exposed its full length 

 and leit it there as a landmark, in the hope that it would escape the 

 mere curiosity hunter, and it was f-till there at my latest visit. For 

 a distance of about 180 feet the chalk was more or less capable of 

 examination, and it could be said with fair certainty that the zone of 

 0. pilula had not been reached, though the giant ossicle of Metopaster 

 Parkinsoni found in the last few leet hinted at the a])proach of that 

 zone. Beyond this point the cliff was vertical and wholly obscured 

 and the foreshore little better, and I reached the corner A without 

 seeing any sign of the zone of 0. pilula. In the promontories west of 

 corner A I was able to identify faiily satisfactorily both the subzone 

 of abundant 0. pilula (apparently the lower belt of 0. pilula) and 

 the subzone of E. scutatus, var. depressus. Tlie individual beds were 

 not at all easy to follow, but those in which I detected the fauna of 

 the subzone of abundant O.jJilula seemed to pass just south of corner A, 

 so that the upper boundary of this subzone (and of the zone of 

 0. pilula) probably passes through the wholly obscured part of the 

 Arish Mell cliff. 



Beyond the third promontory the cliff is cut sharply back into the 

 subzone of abundant 0. pilula, probably as far as the middle belt and 

 possibly at one point into the upper belt of 0. pilula. The surface is 

 so irregular and the beds so much affected by compression and 

 probable faulting that I could not satisfy myself that they could be 

 followed accurately enough for more positive identification, or for any 



