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alteration marked by the presence of the mineral under notice, 

 there is, seemingly, little or no tendency on the part of the Chias- 

 tolite to develop more along the planes of cleavage or of bedding 

 than elsewhere ; while in the ultimate stage, where Mica takes the 

 place of the Chiastolite, the Mica appears to me to follow the original 

 bedding-planes of the rock. In other words, the Foliation of the 

 rocks appears to me to be coincident with the Bedding. The 

 subject is well worth further investigation. Even with all the 

 information that Sedgwick, Otley, Phillips, Harkness, Ward, and 

 others have published respecting the development of Chiastolite 

 Slate, there remains much that does not seem to be quite satis- 

 factorily explained. 



Two or more species or sub-species of the Garnet group occur 

 as metamorphic products at several localities in Cumberland and 

 Westmorland. A few small Garnets may be detected here and 

 there in the Carboniferous shales where these are much altered by 

 contact-metamorphism, as where the Whin Sill is very fully- 

 developed. But the fullest development of Garnets occurs in 

 many of the more highly-altered Older Palaeozoic tuffs of the Lake 

 District. They occur in great numbers in some particular beds of 

 tuff, especially in the neighbourhood of large intrusions of Plutonic 

 rocks. Mr. Ward mentions a bed of tuff near Great Gable, as an 

 instance ; another locality is one of the crags on the east side of 

 the foot of UUswater. Bryce M. Wright {pp. cit.) mentions Walla 

 Crag [Hawes Water] as well as several localities near Keswick. 

 At some of these the crystals may be detached from the rock- 

 matrix with little difficulty ; and the Garnets are frequently 

 sufficiently clear and free from flaws to be available for ornamental 

 purposes. As in the case of the mineral last-mentioned, the 

 genesis of our Garnets yet remains to be satisfactorily worked out. 

 Epidote occurs here and there in groups of small acicular 

 crystals, usually of some shade of dark yellowish-green, or of 

 olive, and forming small nests, or lining fissures, in the volcanic 

 rocks of the Lake District ; especially in such rock as shew evident 

 signs of having undergone a certain amount of metamorphism. 

 Several veins of it occur in the Volcanic rocks near Keswick. In 



