554 MR. E. WETHER ED ON THE INFERIOR 



Section at HuddinglcnoTl-Hill Quarry^ Ilorsepools, 

 near Gloucester. 



ft. in. 



5. Dapple Bed 1 



4. EedEed 10 



3. Bastai-d Freestone 2 (J 



2. Hard Brown Stone 3 



1. Kockery Bed 4 



11 4 



It will be observed that each bed has a name : these have been 

 given by the local quarrymen, a fact which shows that each bed 

 has it distinctive features. The following are the facts derived 

 from microscopical examination : — 



The Eockery Bed is a limestone made up of small fragments of 

 echinodermata, chiefly the ossicles of crinoids, portions of shells, 

 spines, and foraminifera. IN'o oolitic granules were detected. 



The Hard Brown Stone contains organic remains similar to those 

 in the last bed, but larger. To some few the tubules of Girvanella 

 are attached, a feature not noticed in the Rockery Bed. There are 

 also some very small, highly-crystalline oolitic granules of the 

 ordinary type. 



The Bastard Jj'reestone is a limestone in which the organic frag- 

 ments are larger than those in the beds below, and man}- of them 

 are enclosed in a crust consisting of the tubules of Girvanella 

 pisolitica and so form oolitic granules ; hence the name " Bastard 

 Preestone." 



The Red Bed takes its name from the colour, which is due to 

 ferric oxide. The limestone is more crystalline than those before 

 mentioned, and there is a considerable amount of infilling calcite.. 

 The organic fragments are small, about the size of those in the 

 Rockery Bed, but in this case they mostly served as nuclei for oolitic 

 granules. 



The Dapple Bed is so named by the quarrymen because it is marked 

 by light and yellow patches, a feature which attracted the notice 

 of geologists some j^ears ago. Mr. AV. C. Lucy, in his very interesting 

 " History of the Cotteswold Naturalists' Pield Club," records (p. 6) 

 that on October 6, 1849, the Club met at the Horsepools, and in the 

 HuddingknoU Quarry Mr. Strickland " called attention to some 

 quartz pebbles embedded in the Oolite, and also to pebbles of Oolite 

 in a bed distinguished from the matrix in which they were enclosed 

 by a difference in colour and texture, thus evidencing the destruction 

 of older rocks of the same nature during or previous to the depo- 

 sition of the existing Oolitic Rocks.'"' 



The Dapple Bed is the highest one of the Pea-Grit Series exposed 

 in Huddingknoll-Hill Quarry. I have not seen the typical Pea Grit 

 exposed in this neighbourhood ; but, judging from pieces picked up 

 in old quarries now partially filled in, I believe that it does occur 

 in the district. 



As representing the Pea-Grit Series in the Stroud area specimens 



