Vol. 59.] AT COWLEY, NEAK CHELTENHAM. 383 



show that this is not an error in fact, but only in inference. It 

 is possible to correct the limits of the several subdivisions upon 

 which the deposit of the hemera Garanticmce was laid down, so 

 as to agree with the facts recorded in the present paper, without 

 interfering with those boundary-lines which are founded upon 

 facts in Mr. Buckman's map. In other words, the present evidence 

 rectifies portions of those limits which were drawn theoretically. 

 If a tracing of the appended figure (p. 382) be placed upon the 

 corresponding portion of Mr. Buckman's map, the places where the 

 lines represented in the former differ from those in the latter will 

 be readily ascertained. 



The section exposed in Cowley Quarry is as follows, in descending 

 order : — 



Quarry near Cowley Wood. Thickness in 



Feet inches^ 

 (\. Yellowish, rubbly stone, pisolite-sphe- 

 rules; Glypeus Ploti, Terebratula glo- 

 ~ n l bata, Terebratula sp., Pholadomya, 



Lltpeus-^rit. i Pkurotomaria, etc '.... 3 



j 2. Greyish - yellow limestone ; very few 



( fossils 1 1 



(3. Greyish, shelly limestone, lowest stratum 



bluish -grey, m assive- bedded ; Tere- 



Upper bratula globata, Ehynchonella hampen- 



TxiGoyiA-GtRiT. 1 ensis, Bh. angulata, Zeilleria Hughesi, 



Acanthothyris spinosa, Trigonia, Avicula, 



\ Lima, Ostrea, Holectypus, etc 8 8 



f 4. Greyish, arenaceous, clayey shale ; Tere- 

 bratula BucJcmani, T. cricldey ensis, 



Acanthothyris sp to 4 



Buckmaxi-Gr.it. \ 5. Hard, grey, sandy limestone, very much 

 bored by Lithodomi, less so by annelids ; 

 Terebratula Buckmani, Serpula socialis, 

 ^ Trigonia formosa, Gervillia, Lima, etc. . 1 5 



In 1901, when most of these notes were made, the section was 

 considerably more interesting than it is now, for since that time the 

 quarry has been much enlarged. This somewhat paradoxical state- 

 ment is to be explained by the fact that when I first visited the 

 section, Bed No. 4 of the above could be seen 4 inches thick at one 

 end of the quarry, but was absent at the other. Now, however, 

 over the greater part of the quarry, Bed No. 5 constitutes the floor. 



The Clgpeus- and Upper Trigonia-Grits call for no particular 

 comments. It may be mentioned, however, that the surface of the 

 latter has a conspicuous layer of Ostrea adhering to it, some of 

 which — together with the rock to which they are attached — have 

 been bored by Lithodomi. This layer of Ostrea upon the surface of 

 the uppermost bed of the Upper Trigonia-Gxit I have noticed in 

 many sections in the Cottes wold Hills around Cheltenham : it would 

 seem to point to another pene-contemporaneous erosion. 



At the north-eastern end of Cowley- Wood Quarry the Upper 

 Trigo/iia-Giit rests upon a grey, arenaceous, clayey shale, which 



