﻿210 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 9, 



and Dundry, the "Ammonite and Belemnite bed" underlies the Piso- 

 lite, or overlies the sands, and is a very constant and well-marked 

 member of the series. At Cleeve I detected just above the Upper 

 Lias, some loose fragments of a hard, brown, sandy stone, with Shells, 

 Bones, and Coprolites, which no doubt is present in situ, if it could 

 be clearly ascertained. At Crickley the Pisolite, on the southern 

 escarpment, reposes on a grey, bluish-brown, gritty stone, three or 

 four feet thick, passing into a hard, grey, ferruginous rock, one foot 

 thick. Fragments of Bones, Scales, Coprolites, and Teeth of Hybo- 

 dus are very abundant, especially in the upper part ; the shining, 

 oolitic, oval grains are not so constant, but there are numerous Be- 

 lemnites, Ammonites, Pectines, Terebratulce (T. bidens, PhilL), large 

 Pholadomya, Spondylus (Hinnites), &c. From the mass of debris 

 the section is difficult to make out, but it is evidently a continuation 

 of the same stratum at Leckhampton before described ; the litholo- 

 gical differences are comparatively slight (the limestone, No. 2, F., 

 being less clearly defined), and the zoological agreement nearly perfect. 

 A roadside escarpment on Frocester Hill, facing the Severn, towards 

 Coaley, presents the following section in descending order : — 



Feet. In. 



f Freestone (base of), the top beds shelly and flaggy, like the " shelly 

 freestone " at Leckhampton, the lower part generally softer, 

 coarser, and gritty ; here and there traversed by hard shelly lay- 

 ers ; the surface of the blocks often covered with broken stems of 

 I a new species of Pentacrinites, plates of Cidaris, and small water- 

 worn Corals. It is used for building purposes, and is remarkable 

 for its dazzling whiteness. These constitute the lowest beds of 

 the freestone and are about 40 feet thick, the thickest portion 

 forming the summit of the hill, and being on the whole quite as 

 thick as at Leckhampton, which with some slight mineralogical 



difference it clearly represents 40 



Fine-grained gritty stone of a light brown colour, resembling the 

 " Trigonia-grit," loaded with Pholadomya, Trichites, Modiola pli- 

 cata, Sow., Serpula socialis, Goldf., and frond of a Fern, a rare 



fossil in the Inferior Oolite of Gloucestershire 3 or 4 



3. — Hard, yellow Oolite with few fossils 5 



'"D. — Coarse Oolite, of a brown and yellow tint, made up of oval oolitic 

 particles; full of Belemnites*, Ammonites (A. discoides, D'Or- 

 bigny, A. excavatus, Sow., A. Parkinsoni, var. Sow.), large Nau- 

 tili, Modiola plicata, Sow., Astarte, and numerous other shells. 



Terebratula bidens, PhilL, occurs in layers at the top 4 



F. — Loose rubbly bed, with irregular nodules of a hard micaceous 

 stone ; the surface covered with Serpulce, and occasionally bored 

 into by a lithodomous Mollusk as the equivalent limestone at 

 Leckhampton (see No. 2. F.) ; passing into a hard coarse Oolite, 

 similar to D. above described, yielding Belemnites, Ammonites, 

 and carbonized Wood. It becomes sandy at the base. I could 

 detect no remains of Fish in any part, but it is evident that this 

 entire band is identical with No. 2. at Leckhampton and Crickley, 



with which it agrees in most particulars s 7 



Yellow micaceous sand ; depth uncertain, but it must be of con- 

 siderable thickness, probably 30 or 40 feet. Dip slight, to the 

 south-east. The Lias is not well exposed in this section, al- 

 though it is visible near the turnpike at the bottom of the hill, on 

 the road to Frocester. 



5. 



* The greater number of the Belemnites and Ammonites from this division in 

 the Cotswolds are unnamed. 



