78 MR. C. B. WEDD ON THE COEALLIAN EOCKS [Feb. I9OI, 



in a ditch a few yards west of Rogues Lane Farm on the 

 road to Elsworth ; and along the western slope of the high ground 

 the Rock can be traced by fragments in the soil, becoming very 

 numerous in the neighbourhood of an exposure 400 yards west- 

 south-west of Emery's Barn, when I found in a ditch sections 

 for 50 yards in a yellow ironshot limestone with Ostrea fiahelloides, 

 Exogyra nana, and Vermilia sulcata (?). Blue Oxford Clay was 

 seen lower down the slope. Thence the outcrop sweeps round the 

 northern end of the hill on which Emery's Barn stands, closely 

 following the 100-foot contour-line, as shown by fragments in the 

 soil, with Ammonites jplicaiilis, Grypha^a, and Serpula. 



East of this a valley runs south-south-eastward to Pitt Dean 

 Farm ; abundant fragments of the Rock occurred along both flanks 

 of this valley. These contained Ammonites cordatus (fragment), 

 Belemnites (fragment), and Gryphcea with Serpida. East of tho 

 valley, on the north-western projection of the high ground, about 

 600 yards north-north-west of Pitt Dean Farm, is an obvious 

 outcrop of the Rock, yellowish-brown soil being full of large and 

 small fragments of grey and yellow ' ironshot ' oolitic limestone with 

 Gryphcea and Serpula. 



Along the north-eastern front of the high ground the outcrop 

 can be traced by fragments in the soil for 1000 yards to North 

 Meadow Barn. Here, halfway between Hilton and Elsworth, 

 is a pond on a gentle northerly slope. In this pond the Elsworth 

 Rock is fairly well exposed, and consists of yellow marl with yellow 

 and grey ironshot limestone. I found at this locality Pleurotomaria 

 reticulata^ Sow., Gryphcea, Fholadomya cequalis (?) Sow., and 

 Pleuromya recurva, Phill. The dip is obviously northward. 



East of here the main outcrop bends abruptly northward, while 

 a tongue of the Rock runs eastward and southward to Elsworth. 

 Taking the latter line first, I found the rock at intervals in the 

 ditch that runs from North Meadow Barn along the front of 

 North Meadow Plantation. Hence it sweeps south-eastward 

 and southward along the flat around the north-eastern corner of 

 the hill. Near here, to the east, Thomas Roberts mentions a 

 pond wherein a rock was to be seen, no longer visible, which lie 

 thought might be Elsworth Rock. It certainly is, for it is on the 

 outcrop of that rock ; the rock may be seen in the same field here 

 and there, in the ditch which marks the parish-boundary. South- 

 wards from here for 500 or 600 yards is a slight elevation obviously 

 formed by the Elsworth Rock, as shown by fragments in the yellow 

 soil and by ponds where the Rock may now be seen. The feature 

 dies out southward. The limestone, denuded under Drift, may 

 again be seen under a footbridge immediately north of the village 

 of Elsworth. 



Following the main strike of the Elsworth Rock from North 

 Meadow Plantation across the flat, I found that it runs northward 

 and then north-north-westward as far as Red Hill Farm, with an 

 outcrop fairly well defined by numerous fragments of oolitic and 



