Vol. 59.] SOUTH DEVON AND THE MIDLANDS. 313 



the ' millet-seed ' sandstones of the Lower Bunter, in support of the 

 view that large desert-tracts, with their usual accompaniment 

 of blowing sands, existed in the British region. 



In 1881 the Eev. P. B. Brodie 1 again drew attention to the 

 resemblances between the Midland and Devon pebble-beds. He 

 gave a list of fossils found in quartzite-pebbles in the Drift ; and 

 was led to the conclusion that these had been derived from Keuper 

 beds which may once have existed in the Midlands. These again 

 derived their pebbles from the Bunter ; and for their ultimate source 

 he suggested a north-easterly extension of the Armorican massif, 

 at no great distance from the Midland area. 



In the same year Davidson, in his important monograph of the 

 British Fossil Brachiopoda, 2 gave a complete list of all the brachio- 

 poda of the Budleigh-Salterton Pebble-Bed. His list included 8 

 Ordovician species and 34 Devonian, He adopted the opinion that 

 they were derived from some part of the ' Channel,' rather nearer the 

 British than the French area. He rejected the view that the 

 Ordovician rocks of Gorran Haven or other localities in Cornwall 

 had furnished any of the pebbles. 



In 1882 Mr. W. J. Harrison 3 expressed the opinion that the 

 Midland pebbles were accumulated in a gulf or arm of the sea, 

 and were derived from high land lying immediately to the east 

 and now covered by Mesozoic deposits. He noted also the occur- 

 rence of quartzite-pebbles containing Devonian fossils similar to 

 those found at Budleigh Salterton. 



In 1883 4 Prof. Bonney, referring to the pebbles of Cannock 

 Chase, noted the occurrence of a porphyritic quartz-felsite which 

 was most like the felstone of the Southern Uplands and part of the 

 Highlands of Scotland. He also found in one of the pebbles, 

 Lingula Bouaulti, Salter ( = L. ITawJcei, Rouault), a fossil of the 

 Gres Armoricain. In 1890 Prof. Bonney further remarked on the 

 resemblance between the quartzites of the Loch-Maree district and 

 the Torridon Sandstone, and certain pebbles in the Bunter of the 

 Midlands. 



In 1890 the late G. H. Morton 5 described the Lower Trias in the 

 Liverpool district. He noted that the pebble -beds were 1000 feet 

 thick, but that most of the pebbles were small. He was inclined 

 to think that this detritus was brought by two great rivers, from 

 the north-west and the north-east, 



In 1892 6 Prof. Hull compared the pebble-beds of Budleigh Sal- 

 terton with those of the Midlands. He remarked on the identity 

 in character between the two deposits, and regarded the Budleigh- 

 Salterton Pebble-Bed, with the overlying pebbly sandstone, as the 

 equivalent of the Middle Bunter of the Midlands. The pebbles had 



1 Quart. Journ. Geol. Soc. vol. xxxvii, p. 430. 



2 'Monogr. Brit. Foss. Brachiop.' vol. iv (1881) p. 317 (Pabeont. Soc. 

 vol. xxxv). 



3 Proc. Birmingham Phil. Soc. vol. iii, p. 177. 

 i Geol. Mag. 1883, p. 199. 



3 Ibid. 1890, p. 497. 



c Quart. Journ. Geol. Soc. vol. xlviii, p. 60. 



