VOL. XVII. (i) INFERIOR OOLITE— SOUTH COTTESWOLDS 73 



are not of the same date. Some of the sections named above 

 had been previously noticed in his Monograph, but in this 

 paper some corrections and additions are made. 



The late W. H. Hudleston, in his " Monograph of the 

 British Jurassic Gasteropoda. Part i. Gasteropoda of the 

 Inferior Oolite," gives a general account of the Inferior Oolite 

 of the South Cotteswolds ;' but the Horton section is the first 

 he describes, while the other sections he notices are " Nails- 

 worth Hill and District " and " Rodborough Common." With 

 regard to Rodborough, he makes the noteworthy observation 

 that it is the last place, working in a southerly direction, 

 where the " characteristic gryphite " occurs in the " Gryphite- 

 Grit." He apparently accepted Witchell's statement that 

 Rodborough Hill was the furthest point south at which the 

 Upper Coral-Bed occurred. 



In the Memoir of the Geological Survey, " The Jurassic 

 Rocks of Britain — The Lower Oolitic Rocks of England 

 (Yorkshire excepted)" vol. iv. (1894), a general account is 

 given of the Inferior Oolite of the South Cotteswolds.* The 

 section at Horton is noted, and three subdivisions of the 

 Ragstones are made, namely, the Upper Trigonia-Gvit, Clypeus- 

 Grit, and White Oolite ; but as regards the rest of the district, 

 little subdivision or correlation of its beds is made. A quarry 

 on Break-Heart Hill is noticed, but as to the precise age 

 of the beds exposed there the author is in doubt. They are 

 now known to belong to the Freestone (Aalenian) division 

 of the Inferior Oolite. 



In 1895 Mr S. S. Buckman published "The Bajocian of 

 the Mid Cotteswolds."^ The only portion of the South Cottes- 

 wolds referred to is Rodborough Hill ; but the author clears up 

 the mistake that had been made there with regard to the 

 "Intervening Beds." He shows that one portion is Lower 

 Trigonia-Gvit, and the other probably Buckmani-Gvit ; but as 

 he had found no specimens of Terebratula Buckmani or other 

 distinctive fossil in situ in the latter subdivision, he could not 

 say for certain whether or not it was Buckniani-Grit. 

 In a report of an excursion of the Geologists' Association 



Loc. cit., pp. 56-65. .: Loc. cit., pp. 102-119. 3 Quart. Joum. Geol. Soc, vol. li. (1895), 

 pp. 388-462. 



