88 PROCEEDINGS COTTESWOLD CLUB igio 



and in the fourth, at " The Fort " and Mount- Vernon Quarries 

 on Rodborough Hill, and near Nailsworth at Scar Hill, Hazel- 

 wood and Longfords. 



(i) The Bath-Dodington Area. 



On the south side of the Avon Valley the Inferior Oolite 

 is thus divisible : 



Sequence of Inferior-Oolite Beds at Midford 



On the north side of the Avon Valley there is the same 

 succession, but the Upper Coral- Bed is only very poorly 

 developed, and at the Box Tunnel (according to the late 

 Robert Etheridge) the total thickness of the beds is only 

 30 feet.' 



I have investigated all the numerous valleys running 

 up northwards into the southern end of the South Cotteswolds, 

 but have found few sections worthy of note. The rocks are 

 frequently greatly disturbed by landsliding ; sometimes so 

 much so as to give the impression that the Great Oolite under- 

 hes the Inferior — a phenomenon noticed by the Rev. H. H. 

 Winwood near the Monkswood Reservoir.^ 



At this southern end of the South Cotteswolds then, the 

 Upper Trigonia-Grii rests directly upon the Sands. These 

 appear to be of ? DumortiericB ,^ dispansi and Struckmanni 

 hemerae ; ♦ and may be of striatuli hemera as well. 



A well at Primrose Hill, to the east of Weston, proved Sands with 

 sand-burrs, from which Mr Winwood obtained " Dumortieria 

 radians and Lima toarciensis, Desl.,"3 and therefore of DumortiericB 

 hemera; resting upon a local Cephalopod-Bed, which contained 

 " Ainmonites communis, A. bifrons, and Rhynchonella Moorei." 

 From this it would appear that the lithological succession of the 

 Toarcian beds is similar to that at Timsbury Sleight 5 



I " The Jurassic Roclcs of Britain— The Lower Oolitic Rocks, of England (Yorkshire excepted)." 

 Mem. Gaol. Surv., vol. iv. (1894), p. 98. 2 Proc. Bath Nat. Hist. and.'\ntiqu. F.C. vol. vii. (1895), 

 p. 153. 3 Geol. Mag. (1888), p. 470. 4 Quart. Joum. Geol. Soc, vol. lix, (1903), p. 452. 5 Ibid., 

 vol. Ixiii. {1907), table facing p. 416. 



