'6 



ME. C. B. WEDD ON THE COEALLIAN ROCKS [Feh. I9OI, 



Hinnites sp. 



Trigonia sp. (perhaps Tr. clavellata, 



Sow.). 

 Waldheimia (two species ?). 

 VermiUa sulcata (f) Sow. 



Between here and Yelling the ground is Drift- corered, but in 

 the middle of that village the high ground is intersected by a deep 

 valley running from south to north. The northern x)art is in blue 

 Oxford Clay. Farther south, immediately north of the road where 

 it crosses the stream, near the Inn, is a fairly good section of grey 

 ironshot oolitic limestone, weathering yellow, with many fossils, 

 and seen for a thickness of 1 foot in the stream. It has a slight 

 southerly dip, and is undoubtedly the Elsworth Rock. I obtained 

 from it the following fossils : — 



Ammonites {Terisphincfes) plicatilis, 



Sow. (as figured by D'Orb.). 

 Anatina sp. 



Astarte my sis, Lor. & Pell. 

 Exogyra nana. Sow. 

 GryphcBa dilatata, Sow. 



About 200 yards from the stream-section, a little east of south, 

 is a well. The material here excavated — black laminated clay, 

 with a thin stone-band like those that regularly occur a short 

 distance above the Elsworth Rock — is certainly Ampthill Clay. 



Some 900 yards east of Yelling Church the road crosses 

 the southern end of another valley. About 140 yards north-west 

 of the road a yellow- weathered limestone is seen in the stream, 

 crowded with ironshot grains — undoubtedly Elsworth Rock. From 

 here the Rock may be seen at intervals down the stream, for a 

 distance along it of 6.50 yards from the road. At 180 yards 

 below a bend where the stream turns northward the following 

 section was noted : — 



Boulder Clay. Inches. 



4. Brownish-black clay, with ironshot grains o 



3. Yellow, rotten, ironshot, oolitic limestone, with Exogyra 



nana QX\A Gryph(sa coKiedi v!\\h Scrpula 2 to 3 



2. Brownish -black ironshot clay, Avith two very thin 



rotten ferruginous limestone- bands (the clay contains 

 Ostrea gregaria, Gryphcsa dilatata, and Exogyra 



nana) 20 



passing down into 



1. Grey,ferruginous,ironshot, oolitic limestone, weathering 



yellow. 



The section 50 yards farther north was : — 



4. Yellow -weathered ironshot oolitic limestone, rlisinte- Inches. 



grated. 



3. Black laminated clay, with ironshot grains and Ostrea 



gregaria 12 to 18 



2. Dark bluish-grey ironshot oolitic limestone 8 to 11 



1. Light bluish-grey clay (Oxford Clay). 



The beds vary in detail : the dip also is variable, for the strata 

 roll slightly. The following fossils were obtained from sections in 

 this stream or from debris of the Rock in the bed of the stream : — 



Ammonites {Perispkinctes) plicatilis, 



Sow. 

 Exogyra nana, Sow. 



Gryphcea dilatata. Sow. 



Ostrea {Alectryonia) gregaria, Sow. 



Verinilia sulcata (?) Sow. 



