16 ME. E. A. XEWELL ARBER OX THE EPPER [Peb. I907, 



without goniatites, are found on the west side of Cockington Head, 

 which are probably those noticed by De la Beche, 1 and termed 

 ' ironstone-nodules/" On the south side of Cockington Head and 

 Tut Hole, a bed of shale 2 to 3 feet thick occurs, with large nodules 

 containing Gastrioceras and Dimorphoceras, as well as plant- 

 petrifactions. 



Goniatite-nodules have also been observed at several places 

 between Cockington Head and Clovelly. They occur immediately 

 north of the stream at Babbacombe Mouth, and here and there 

 between Babbacombe and Portledge Mouths. Two beds are also 

 to be found immediately on the west side of Clovelly Harbour. 



Farther westward, nodules occur at the base of a thick bed of 

 shales on the south-east side of Gallantry Bower. They are also 

 again seen before reaching the Mouthmill-Limestone anticline, and 

 are abundant in the thick shales immediately below the limestone- 

 band (see p. 11). 



Still farther west towards Hartland Point, similar nodules have 

 been observed in Beckland Cliff, on the west side of AVindburv 

 Point. In the Hartland district they are quite abundant. Thev 

 have been found in Coalpit Lane, and in Hescott Quarry east of 

 Hartland village ; and on the coast, south of Hartland Point, 

 several beds are recorded by Mr. Bogers from Blagdon Cliff, 

 Upright Cliff, Blegberry Cliff, on the south side of Damehole Point, 

 and in Warren Cliff near Hartland Quay. 



Between Hartland Quay and Marsland Mouth, the latter being 

 the boundary between Devon and Cornwall, nodules occur at 

 Sandhole Beach, about half-a-mile north of Xabor Point, and at 

 Gull Bock Beach on the south side of the same Point. On the 

 south side of Broadbench Cove, still farther towards TTelcombe 

 and Marsland Mouths, a well-marked band of large goniatite- 

 bearing nodules was found. 



The next locality to be mentioned is north of Shag Bock, near 

 Knap Head, where large nodules were also obtained. Along 

 the Cornish coast-section, similar beds were observed on the north 

 side of Lower Sharpnose Point, and near Sandy Mouth, both to the 

 north of Bude. The farthest point southward, at which these 

 concretionary rocks have been found, is on the south side of 

 Cambeak, near Trevigne, some 4 miles to the north of Boscastle. 

 High Cliff probably stands somewhere near the southern boundary 

 of the Upper Carboniferous rocks in West Cornwall. The beds 

 developed in the bay north of High Cliff, and well seen in the 

 large landslip by which the road passes to the beach, are typical 

 of the Upper Carboniferous Series of Devon and Cornwall, and 

 contain goniatite-bearing nodules. 



These calcareous beds are thus widely distributed, and of 

 common occurrence, throughout the whole of the Upper Carboni- 

 ferous sequence in both Devon and Cornwall. They commonly 

 contain a marine fauna, especially goniatites. which will be further 

 noticed at a later stage in this paper. 



1 De la Beche (39) p. 125. 



