LIOCERAS OPALINUM. 47 



Ft. In. 

 31. Blue and yellow sands, continuing down probably to where water is 



obtained in the village .... 30-35 



A. 32. Upper Lias Clay ? 



VIII. — Section exhibited in the road at Stinchcombe (thirteen and a half miles from 

 Gloucester south-south-west) . 



This shows the junction of the Cotteswold Sands with the Upper Lias Clay, thus giving particulars 

 which the other sections do not. As this section is about two miles north of Nibley it may well 

 be taken as showing the base of those Sands exhibited in the last section. 



Cotteswold 1. Yellow sands which break up in small rectangular lumps, extending up 

 Sands. the hill ....... 



2. Very dark brown argillaceous marl, containing Hildoceras bifrons, Brug., 



in abundance ; Harp. ? compactile, Simps. ; Belemnites, &c. . .01 



3. Brownish and sometimes bluish, shelly, somewhat sandy stone, with plenty 



of small ferruginous specks (top part very uneven and filled with the 

 bed above). Hild. bifrons, Stephanoceras, Bhynclwnella, Terebratula, 



8 



Upp. Lias A. 4. Dark blue clay without fossils, containing large blue-hearted nodules of 

 Clay. stone, which break with a conchoidal fracture and are non-oolitic 



IX. — Section at Burton-Bradstoch Cliff, Dorset, partly taken from Mr. Hudlestons 

 ' Gasteropoda,' Pal. Soc. (vol. for year 1886, p. 31). 



" 1. Line of irony nodules, Gasteropoda, Am. Murchisonce . .19 



2. Impure limestone with few fossils . . . .16 



C 3. Brash and rock with Am. opalinus, Gasteropoda . . .03 



C". 4. Calciferous grits and brown sand-rock of the Yeovil Sands." [" Above 

 the main mass of the ' Yeovil Sands ' there occur about seven feet of 

 sand-rock and calciferous grits between two lines of very thin, smooth, 

 sharply-keeled Ammonites (op. cit., page 30)."] . . .70 



B. 5. Main mass of Yeovil Sands extending, as I know, to a depth of 150 or 200 

 feet, and containing concretionary nodules, and, in other places, if not 

 here, shelly beds ...... 



G. Upper Lias Clay containing, in other places near, Hild. bifrons and other 

 characteristic Ammonites ..... 



Part of a General Section of the Oolitic Beds in the Northampton District, 

 extracted from a paper 1 by the late Mr. S. Sharp, F.G.S., 8fc., p. 358. 



Gbeat Oolite. 

 Line of unconformity. 

 r 1. White or grey sand, more or less coherent, and with occasional ferru- 

 ginous stains, sometimes quarried for building stone. A plant bed is 

 usually found in this sand . . . - . 12 



1 " The Oolites of Northamptonshire," ' Quart. Journ. Geol. Soc.,' vol. xxvi, 1870, pp. 354—391 

 See this for further details. 



