Mr. Horner on the Mineralogy of the Malvern Hills. 303 



These several rocks are all found within a very limited space j 

 but it was impossible to form any conclusion as to their relation 

 to each other, in regard to position, for they are only seen in separate 

 masses projecting above the surface. The gneiss seems, how- 

 ever, to be the prevailing rock on the northern side, as well as in 

 the upper part of the Holly-Bush Hill, and in the latter place, the 

 slaty structure of the rock is perpendicular to the plane of the horizon. 



§ 42. On the south side of the Holly-Bush Hill, there is a rock of 

 a dark brown colour, composed of compact felspar, hornblende, quartz, 

 and steatite, with a few detached crystals of felspar imbedded in it, 

 producing a kind of porphyritic structure : this appearance becomes 

 more distinct, when the rock is a little decomposed. It has an earthy 

 texture, with somewhat of an uneven fracture, and is attracted by the 

 magnet. In a small quarry, about a quarter of a mile to the west- 

 ward, I found the same rock in various stages of decomposition. 

 Where it is most decomposed, it becomes a friable mass of an ochre 

 yellow colour. 



§ 43. The last place, where I found the rock exposed at the south 

 end of the range, was about half a mile beyond the Holly-Bush Hill ; 

 it was called the Ragstone Hill by some quarriers whom I found at 

 work. The rock that occurs here is different from any other I met 

 with in these hills. It is of an olive green colour, and, as far as the 

 closeness of its texture enables me to say, is composed of felspar and 

 mica, united by a ferruginous clay, forming nearly a homogeneous 

 mass, and occasionally traversed by veins of calcareous spar. It oc- 

 curs massive, without any signs of stratification. 



% 44. Before concluding this enumeration of the unstratified rocks, 

 I may notice a breccia, of which I found a loose block in a lane near 

 the Holly-Bush Hill on the western side, but which I could not dis- 

 cover any where in situ. It is composed of rounded fragments of 



