108 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 17, 



fine ochre-tinted freestone peculiar to the district, its rich colour 

 giving a character to Toddington Abbey, which is built of it. 



B. 6. One of the most persistent of the Inferior Oolite beds is the 

 one named Chjpeus-brash, from the enormous quantity of Clypeus, 

 now Nucleolites sinuatus, it contains. The platform upon which 

 the houses at Birdlip stand, rests on this bed, which is well exposed 

 by the denudation of the Fuller's earth. (See Section, PI. VII.) 

 Here the plough on the Stone-brash turns up this Urchin in large 

 quantities ; the same is the case in the Stow district, where we have 

 frequently seen it gathered in heaps for removal from the barley- 

 field, and have not always succeeded in convincing onr bucolic friends 

 that it was not an annual production ; for this their conclusion, its 

 constant and apparently undiminished appearance in the different 

 crop-rotations may partially excuse them. 



B. 5. The Grits, which at Leckhampton and Lineover Hills, near 

 Cheltenham, are separated into two thick beds by a thin band of 

 marl, are at other parts of the district so intermixed as to be in- 

 separable. The Lineover section is as under, in descending order : 



ft. in. 



3. Trigonia-grit, a bed of hard ragstone, highly 

 charged with Trigonia costata, T. clavellata, and 

 other species of this genus, as erected by Mr. 

 J. Lycett 4 



2. Band of marl full of shells, among which the 

 Perna mytiloides, Bronn, L. G. t. 19, fig. 12, is 

 the most conspicuous 8 



1. Gryphite-grit, locally named from the great 

 abundance of Gryphcea Buckmanni, Lycett 

 (Proceedings Cotteswold Club, vol. i. p. 236) . . 10 



These grits occur more or less distinct at the Cleeve Cloud, and on 

 the Stow road, and indeed are universal in this district as part of 

 the Inferior Oolite deposit. 



B. 4. The Oolite-marl is also a most persistent bed both in cha- 

 racter and thickness ; it will however be found more or less indurated 

 at different places, even at no great distance apart ; thus, at the 

 west end of Leckhampton Hill it is a hard white limestone, highly 

 charged with Terehratula fimbria, whilst in the scarps facing the 

 north it is a soft yellowish marl, especially towards the base ; and 

 here the former Terehratula is less common, its numbers being 

 replaced by the Ter. maxillata (submaxillata, Davidson), a shell 

 which becomes exceedingly common upwards in marly beds of a 

 like character, occasionally formed in the Great Oolite, — a fact 

 showing how the same circumstances recurring after a lapse of time 

 result in the re-introduction of an older fauna. This same marl- 

 bed was shown me in a section near the Brimscomb station, from 

 which I not only obtained fine specimens of T. maxillata and also 

 T. carinata, Lam., both abundant at the Leckhampton station, but 

 also of a diminutive form of Ter. simplex, Buckman, as pointed out 

 to me by my friend John Lycett : this latter fact affords a remark- 



