VOL. XVII. (i) INFERIOR OOLITE— SOUTH COTTESWOLDS 135 



At The-Fort Quarry there is a non-sequence between the 

 Upper Trigonia- and Clypeus-Giits, for neither the Dundry 

 Freestone nor Upper Coral-Bed are present. But the latter is 

 developed a short distance away at the Mount- Vernon Quarry.'** 



It is unnecessary to append a detailed section of The-Fort 

 Quarry, or of those at Mount Vernon and Mount Surat, for I 

 have already given such in the Proceedings of the Club, and to 

 them I have nothing to add.' For the sake of completeness, 

 however, it will be as well to state that at The-Fort Quarry the 

 Clypeus-Grit is very well developed. The lowest beds are 

 brown and rather bare of fossils, as is generally the case in the 

 Stroud district. But the higher beds are rubbly and fossil- 

 iferous, Terebratula globata, auctt., being very abundant along 

 certain horizons. 



The Lower Trigonia- and Buckmani-Gvits are represented 

 at the Mount-Vernon Quarry by deposits i foot 4 inches and 

 I foot 7 inches thick respectively. Above them comes the 

 Upper Trigonia-Gvit (7 feet 10 inches), and this is overlaid by 

 a very interesting development of the Upper Coral-Bed. The 

 Upper Coral-Bed has yielded a number of most interesting 

 fossils, including crowds of micro-organisms, which have been 

 identified by Mr Charles Upton.' The Clypeus-Grit completes 

 the section. 



At the next quarry, the Mount Surat (or Montserrat), the 

 Upper Trigonia-Gxit rests directly upon the Upper Freestone : 

 the Lower Trigonia- and Buckmani-Gvits have disappeared,^ 

 neither is there any Upper Coral-Bed present.'^' 



None of the Intervening-Beds are present along the south 

 side of the deep Stroud-Sapperton Valley east of Rodborough 

 Hill. 



The Lower Freestone is exposed in a number of small 

 quarries, and is especially well seen in the abandoned workings 

 at the hamlet called " Wall's Quarry,"* and in the old quarry 

 in the wood by the road-side near the house called " Hyde 

 Brae," Chalford. At both these localities the Lower Freestone 

 has been mined, and has typical Oolite Marl (at Wall's Quarry 

 about 5 ft. thick, and at "Hyde Brae " from 8 to 10 ft. thick) 

 parting it from the Upper Freestone. It should be noticed that 



I Vol. xvi., pt. I {1907), pp. 71-80. 2 Idem. p. 75. 3 See S. S. Buckman, Quart. Joum. Geol. 

 Soc., vol li. (1895), p. 394. 4 See Lycett's " Cotteswold Hills " (1857), p. 47. 



