. The Quarterly journal of the Geological Society of London. ngton area perfect mine of wealth to collectors ; and the matrix being peculiar,the locality of hand specimens is easily identified. The upper partof the limestones here becomes a large-grained purple oolite, themarly partings becoming a soft oolitic rock from which the fossilsare extracted in good preservation. Blocks may be obtained coveredwith double valves of Trigonia clavellata with the ligament unin-jured ; and hence is said to have come the beautiful coral Comoserisirradians, figured by Edwards and Haime, as well as other cora
. The Quarterly journal of the Geological Society of London. ngton area perfect mine of wealth to collectors ; and the matrix being peculiar,the locality of hand specimens is easily identified. The upper partof the limestones here becomes a large-grained purple oolite, themarly partings becoming a soft oolitic rock from which the fossilsare extracted in good preservation. Blocks may be obtained coveredwith double valves of Trigonia clavellata with the ligament unin-jured ; and hence is said to have come the beautiful coral Comoserisirradians, figured by Edwards and Haime, as well as other corals,which, however, are by no means common. From this locality the same beds may be traced at various pointsalong their outcrop, always characterized by their extremely fossili-ferous nature, being, indeed, largely composed of shells, and showing-very little oolitic structure. In a quarry in this stone at Broadwey,Mr. Damon has recorded the occurrence of Ceromya eoccentrica(Ag.), a fossil of importance in some localities. View of Linton Hill from the a. Oolite Quarry b. T?igonia-heds. c. Sandsfbot Grits. d. Iron Sands. The development of these and the overlying beds near Abbotsburyis admirably seen in the picturesque elevation called Linton Hill(fig. 1). Its gently sloping sides are scored obliquely by two cliff-likeescarpments passing over it from to These are dueto the succession of hard beds which have a rather less slope to theeast than the surface of the ground; they crop out in succession in along longitudinal valley to the south, where the largo tabular doggersarc soon, and spread out in broad patches on the northern slope. THE CORALLIAN ROCKS 0¥ ENGLANJ). 269 On the western slope of the hill, opposite St. Catherines Chapel, issituated the quarry (a) already noticed (p. 265) as representing theOsmington Oolite ; and the first of the abrupt escarpments going eastis composed of the series representing the Trigonia-beds (b) ; while thenext escarpment p
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