206 



the case with Terebratula Phillipsii and its variety Ter. Buchnanni. 

 "I think that Dr. Wright is quite correct in saying that the beds of the 

 Rolling Bank Quarry are the equivalents of the Dundry beds, but he 

 has fallen into an error in referring them to the Upper Freestone. lu 

 tracing the Dundry beds northwards, it appears to me he has overlooked 

 the intercalation of the Upper Freestone at Avening, and in so doing 

 has passed from a higher to a lower level, without being aware of it. 

 Both the Dundiy beds and the beds of the Rolling Bank Quarry belong 

 to the Trigonia Grits, but in the latter locality they are displaced 

 downwards, and rest upon the Upper Lias Clays." 



WEST. 



I 200 YARDS. _ I ] 200 YARDS. | 



AA Lower Freestone. BB Oolite Marl. CCC Upper Freestone. 



D Lower Ragstone (Lower Trigonia Grit), 



Dr. Wright's reply to the foregoing observations of Dr. Holl, is 

 as follows : — 



"It seems to me that it is a case of 'Much ado about Nothing,' for had my 

 account of the Rolling Bank Quarry been correctly quoted, there would 

 have been little or no occasion to find fault with it. After defining what 

 I mean by the zone of Am. Humphresianus, I stated that this zone is 

 represented in the North Cotteswolds by a series of ferruginous Oolitic 

 Limestones raised for road material at Cleeve Hill. Then follows an 

 account of the different beds and the lists of the fossils contained in each. I 

 prove that these beds are covered by the Lower Trigonia Grits, and 

 rest upon a bed of Marl, which forms the floor of the quarry. I was the 

 first to describe these beds, determine the fauna, and point out their 

 correlation with the zone of A. Humphresiamis in other regions, and I 

 am not aware that I ever called them Upper Freestones, my object 

 being to show that we possessed the Middle Division of the Inferior 

 Oolite in the Northern Cotteswold. In speaking of the flaggy beds above 

 the Oolite Marl in the Leckhampton Hill section, I may have said that 

 they occupied the stratigraphical position of the zone of A . Humphresianus; 

 but that is very difierent from the version that 'the beds of the Rolling 

 Bank Quarry are the equivalent of the Bastard Freestones.' This could 

 only be proved by a comparison of the fauna in each set of beds; 

 and as the Rolling Bank beds are fossilifei-ous, and the others only 

 sparingly so, I went no farther than to state that they occupied the 

 stratigraphical position of the A. Humphresianus beds, between the 

 Oolite Marl and the Lower Trigonia Grit. One set of beds may occupy 



