290 Mr. Horner o« //&<r Mineralogy of the Malvern Hills, 



which differs very essentially from those that I found in any other 

 part of the range. It is composed of nearly an equal mixture of horn- 

 blende and epidote in small grains, with a few specks of mica. It is. 

 of a yellowish-green colour, of a close texture, with rather an uneven 

 fracture, and is crossed in all directions by slender veins of compact 

 epidote. In some instances, the surfaces of the irregular fragments 

 into which it breaks, are covered with minute crystals of magnesian 

 carbonate of lime, and with slightly magnetic oxide of iron : the 

 rock itself does not act upon the magnet. It occurs in very large 

 masses, but neither in the disposition of these, nor in the internal^ 

 arrangement of its parts, does it exhibit any signs of stratification. 

 Within a very limited space, it assumes different .'ispects ; the differ- 

 ence seeming chiefly to depend on the greater or less abundance of 

 the epidote, and also on different states of decomposition. 



§ 19. The epidote is found on the End-hill, under various appear- 

 ances ; in some of these, the crystalline forms peculiar to this sub- 

 stance may be seen, but I did not meet with any complete well- 

 defined crystals : it is most commonly found in a compact and 

 granular state, forming small veins of a yellowish-green colour, 

 which sometimes pass through the granite, and sometimes through 

 the sienitic rocks. It is not confined to the End-hill, but I found it 

 in greater abundance there than in any other part of the range, particu- 

 larly on the northern side of the valley, which separates that hill from 

 the North-hill, and among the loose fragments that are scattered over 

 that valley. It is very often found in veins mixed with quartz 

 and with felspar, but the only place where I found it forming the 

 constituent part of a rock was at the northern fiice of the End-hill. 

 In some instances, the epidote would scarcely perhaps be recognized, 

 especially ■where it is much mixed with felspar or quartz; but if a 

 series of specimens be examined, from that in which it is very abun- 



