104 ME. W. WICKHAM KING ON THE PERMIAX [Feb. 1899, 



pebbles are small, the longest that I have found measuring only 

 2 inches. Less than ^ mile to the northward, at Broad Oak Hill, 

 this zone is a massive calcareous sandstone devoid of pebbles. It 

 retains this character up to the north-western end of the district, 

 and is reduced to the thickness first noted, of 75 feet. 



Band B^. — The overlying strata are red marls and sand for about 

 the first mile of their course, with a thickness of only 20 feet. 

 They then become gradually more sandy, eventually passing into 

 red and mottled sandstones with some marly seams, and as such 

 are well exposed in and near the road from Tuckhill to Six Ashes, 

 where they are 90 feet thick. They retain this character for 

 the remainder of their course, but increase in thickness to about 

 110 feet. 



Band C\ for about the first 2 miles of its course — namely, 

 from Compton to near Pour Ashes — is a calcareous sandstone, and 

 increases in thickness from only 10 feet at Compton to 30 feet 

 near Four Ashes. At the Green, Four Ashes, it becomes in its 

 central part a 10-foot conglomerate, which with the underlying 

 and overlying calcareous sandstones forms a prominent rib, 30 feet 

 thick at the Green, but measuring at least 40 feet at Four Ashes 

 Hall, close by. The largest pebbles here are about 5 inches long, and 

 many measure 3 inches : they are all rounded fragments. At Six 

 Ashes, 1 mile north-west of the Green, Four Ashes, the basal parts 

 have gradually become a conglomerate, 20 feet thick, with inter- 

 calated sandy bands. The change can be seen on the ground in several 

 intermediate sections. This conglomerate is succeeded by a band 

 of loose sandstone (10 feet thick), and then by a second conglomerate, 

 about 15 feet, making a collective thickness of 45 feet. The pebbles 

 at Six Ashes are much the same size as at Four Ashes. For the 

 next ^ mile the surface-indications and one quarry show that the 

 pebbles are gradually disappearing, and at the end of this distance 

 the whole band has become a massive calcareous sandstone, 50 feet 

 thick, forming, at and near Gatacre, for the last mile of the north- 

 western extremity of the area, a very prominent physical feature 

 in the landscape. 



Band C^ is very indifferently exposed, the best section being 

 seen in a pool east of Four Ashes. The beds are red marls 

 throughout, from 25 to 35 feet thick, the greater thickness being 

 to the south. Their geographical position is fixed on the ground, 

 by the width of the platform between the two steps formed by C^ 

 and D\ but it is somewhat difficult to follow. 



The Upper Permian of the Enville District. 



The Upper Permian of the Enville district commences at the 

 southern end as coarse breccia (D^), with angular fragments of 

 pyroclastic rocks and of sundry sandstones — some of them more 

 than 12, and very many 6 inches long, thickly set in a marly 

 paste. The thickness of this breccia at and near Compton, near the 

 south-eastern boundary, is about 225 feet. At the north-western 



