380 ME. s. s. BrcKMAX OS [vol. Ixxviii, 



on these blocks showed that they were in the position of the 

 Junction-Bed of Down Cliffs to Thorncombe Beacon, described 

 in niT former paper,^ but that this exposure of the bed differed 

 remarkably from what is found onh^ about three-quarters of a mile 

 away to the west. The Eype type consists mainly of strata with 

 Grammoceras striatuJum (G^. sfriatidum sensu \2i\.o -\- tliouar- 

 sense and other species) — a thin layer with these fossils was 

 seldom present at the top of the Down Cliffs Junction -Bed ; and 

 here, at Eype, it is mainly a fine white lithographic stone, 

 weathered faces of which show it to have been laid down as a 

 fine Avhite mud in paper-like layers : it is a very finely laminated 

 bed. As I had, in my former paper, described at Burton Brad- 

 stock another white lithographic -stone bed, also associated with a 

 fault and connected with Bridport Sands, the various interesting 

 questions which arose ^vill be readily understood. 



Further work was done on this bed and the neighbouring strata 

 dm-ing short holidays in the autumns of 1917, 1919, and 1920. A 

 preliminary account of these investigations will, it is hoped, be 

 equally interesting to the Society. 



This paper was commenced on my return in 1917, but it was 

 mainly written in the winters of 1918-19, 1919-20. During my 

 visit to Eypesmouth in 1920, inspection of the bed showed that 

 another investigator had taken details of it; a few days after- 

 wards there came to Eypesmouth a letter from Mr. J. F. Jackson, 

 enclosino" a section. He kindlv asrreed to mv su^orestion that the 

 account of his quite independent discovery and of his researches 

 in the Junction-Bed of the western area should form an Appendix 

 to this paper.2 Therefore, I have divided this communication 

 into two parts : the present paj)er, mainly concerned with these 

 accounts of the Junction-Bed; and a proposed later paper, to give 

 a fuller study of the main mass of Eype (Watton) Cliff — Fuller's 

 Earth to Cornbrash — or the upper portion of the Lower Oolites. 



IT. Steatal and Fauxal Details. 



(A) Watton Cliff : the main mass.^ 



The following is a section of the beds exposed in Watton Cliff 

 down to the ' margaritatus bed,' showing the sequence, with 



1 L 5, pp. 61, 64, 82. 



- Mr. Jackson's account in his Section YIII does not seem to bear out my 

 statement made above about Grammoceras ; but then he might not feel su^ffi- 

 cient confidence to identify Grammoceras by peripheries and cross-sections 

 showing- in a rock-mass. His Section TX would appear to deal with a block 

 which I have not seen. 



"^ The local name for the hill of which the cliff is the face is ' Fourfoot Hill ' 

 and for the cliff itseK ' Clay Knapp.' E. C. H. Day has the name ' Fourfoot 

 Hill ' (III, p. 286). It may be sugg-ested that the name is really • Forefoot 

 Hill,' from the tumbled platform at the base of part of the cliff, though this is 

 to trespass dangerously near the usual error of folk-etymology. It seems 

 advisable to distinguish it as Watton Cliff, from the name of the farm 

 which lies behind it. 



