30 Murchisoris Silurian System. 



being separated by only an alluvial meadow. The northern 

 face of Rosemary Rock is the finest vertical section of the 

 coarse conglomerate near the base of the New Red, with 

 which I am acquainted. The fragments vary from a large 

 size to that of almonds, and are both rounded and angular ; 

 the greater number and largest, consisting of a purple 

 coloured concretionary trap, hereafter to be described, 

 which occurs in the hills of Barrow, Woodbury, and Abber- 

 ley, the northern prolongation of the Malvern ridge. The 

 other fragments are chiefly referrible to the Silurian System, 

 and among them are quartz rock, indurated schist, and other 

 altered rocks. The cement is partly calcareous, with a few 

 veins of white calcareous spar. On a hasty inspection, this 

 rock and others resembling it along this chain of hills, 

 might be mistaken for the trap rocks, from which they have 

 been partly derived, but the admixture of fragments of 

 stratified rocks of the Silurian and Old Red Systems, dis- 

 tinctly proves its regenerated character. The summits of 

 those hills lying to the north of the Teme, which are marked 

 in the map as trap, exhibit on the contrary, no fragments ex- 

 cept those of a peculiar rock, predomenant in this range 

 and in the Clent hills." 



At Collins' Green, conglomerates like those of Rosemary 

 rock, associated with beds of deep red sandstone, rise to the 

 same height as the ridge of silurian rocks, from the flanks of 

 which they dip 20° to 25° south-east. In this conglomerate 

 are also many portions of silicefied schist, quartz rock, and 

 altered silurian rock. The silurian and trap rocks subsiding 

 to the west of Martley, the New Red Sandstone is again 

 conterminous with the Old ; and with the depression of the 

 older and intrusive rocks we find a corresponding absence 

 of coarse conglomerate and trappean fragments ; the deep 

 coloured thick bedded sandstone of Martley, being nearly 

 free from all pebbles and foreign fragments. In the north- 



