164 ME. L. EICHAEDSON ON THE [vol. lxxiv, 



The sandy clay of Bed 3 corresponds to Beds (a 1 ) and (a 2 ) of 

 the Cat-Hole Lane section ; while the rubbly limestone and rolled 

 and often phosphatized fossils in its lower portion represent the 

 worn remains of probably an attenuated development of the greater 

 portion of the Opaliniforme Beds, and the Aalensis Beds. 



Slade's Quarry, North Perrott. — In two adjacent fields 

 on the south side of Trindlewell Lane are two openings — one, a 

 quarry (Slade's— (28)) ' in work ' ; the other, an old working 

 under the hedge some 150 yards to the west. 



Section in the Old Working. 



Thickness in feet inches. 



Fuseas Fuller's Earth. Clay; Belemnopsis sp. : seen 2 6 



The Scroff. Yellowish-grey indurated marl: 



about 3 



Zigzag Zigzag Bed. Limestone, rubbly, bluish-grey; 



(Ecotraustes sp 6 



Schlcenbachi... Limestones; Terebratula sphseroidalis auctt., 



CoUyrites ovalis (Leske) : seen 1 



28. Slade's Quarry. 1 

 ? Truellei Limestones, ' sparry,' largely composed of frag- 

 ments of isocrinoid-ossicles ; Belemnopsis 



bessina (A. d'Orbigny) : seen 2 



Garantianse... Reddish-brown, ferruginous, clayey deposit : 



average 1 



(a) Limestone whitish, with occasional large 

 grains, very fossilif erous ; Parlcinsonia sp., 

 Belemnopsis bessina (A. d'Orbigny), Ataphrus 

 acmon (A. d'Orbigny) and varieties, Delphi- 

 it iila sp., Pleurotomaria elongata (J. Sowerby), 

 P. granulata (J. Sowerby) var. ccelata Des- 

 longchamps, Area sp., Ctenostreonj>ectiniforme 

 (Schlotheim), Trigonia costata J. Sowerby, 

 Rhynchonella parvula Deslongchamps, Rh. 

 fplicatella (J. de C. Sowerby), isocrinoid- 

 ossicles, Cidaris bouchardi Wright, CoUyrites 

 ovalis (Leske), Holectypus hemisphaaricus 

 (Agassiz), Cor ynella cribrata Hinde. andHolco- 

 spongia sulcata Hinde 1 5 



(b) Limestone, whitish ; Belemnopsis bessina 

 (A. d'Orbigny), Astarte manseli S. Buckman, 

 Cidaris sp., isocrinoid-ossicles 7£ 



(c) Limestone, similar to (b), with a greater 

 quantity of ochreous matter associated 4^ 



- Non-sequence. Deposit of niortensis-brad- 



fordensis hemerte (inclusive) wanting. 



Murchisonse Limestone; Geyerina sp. (1 foot 11 inches from 

 the top of the bed), Gcelastarte sp., Cucullsea 



Ancolioceras. oblonga J. Sowerby, Entolium demissum (Phil- 

 lips), Variamussiu/m Iseviradiatum (Waagen), 

 Gen Ulia whidbornei Paris, Gresslya abducta 

 (Phillips), Isocanlia cordata (J. Buckman), 

 Lima inoceramoides Whidborne (often with 

 Berenicea attached), Opis trigonalis {J. de C. 

 Sowerby), Trigonia ?sculpta Lycett, Tere- 

 bratula sp. : seen 2 8 



1 This quarry was also visited by the Geologists' Association on April 14th 

 1914 (Proc. Geol. Assoc, vol. xxvi, 1915, p. 75). 



