184 



and A. radians. * These shelly limestones may be traced in 

 places to the south and sonth-west of Yeovil, and there is a large 

 quarry in stone similar to that of Ham Hill, at North Perrot, 

 east of Crewkerne. 



Although the Ham Hill stone is, as a rule, devoid of recog- 

 nizable fossils, I have obtained several specimens of Rhijnchonella 

 cynocepliala in the beds exposed on the eastern side of the outlier, 

 in a quarry about half-a-raile south-west of Montacute Church 

 and this discovery has since been confirmed by the Eev. H. H. 

 Winwood. This fossil corroborates the stratigraphical evidence 

 that the Ham Hill stone belongs to the upper part of the 

 Midford or Inferior Oolite Sands, f While Professor Buckman 

 recognized the true position of the Ham Hill stone in reference 

 to the Inferior Oolite series of the neighbourhood, he was not 

 justified in grouping the upper part of the Sands at Yeovil 

 with the lower part of the Inferior Oolite limestone of the 

 Cotteswold Hills. His son, Mr. S. S. Buckman, has pointed 

 out that although the limestones of Dorset are comparatively 

 thin, yet palreontologically they represent the whole of the 

 Inferior Oolite limestones of Cheltenham, and yield the same 

 succession of Ammonite-zones ; a succession confirmed by the 

 more recent observations of Mr. Hudleston. Hence the Sands 

 below the Inferior Oolite limestone in Dorsetshire, Somersetshire 

 and Gloucestershire are approximately the same, and the term 

 Midford Sands (given to them by John Phillips) is applicable to 

 all these areas. 



* Proc. Geol. Assoc, vol. ix., p. 190. 

 t As mentioned in my Notes on Brent KuoU, a variety of 

 Rluinchonellu, cynocephala occurs at a higher horizoa in the Cotteswold 

 Hills. 



