NEKBUDDA DISTRICT. 129 



This passage of the granite into the schist rocks, through a more 

 perfectly gneissose variety of the latter, which generally forms a tran- 

 sition band obscuring the junction of the two, would seem to suggest 

 that the causes which produced the highly crystalline condition of the 

 schists generally are unconnected with the granite for the transition band 

 is narrow, nor is there observable on the great scale, any chano-e in the 

 mineral condition of the schists, in the neighbourhood of the granite 

 masses, or presumably referable to them. If the altering action of the 

 granite was, as it seems to have been, confined to the narrow limits of this 

 transition baud, it is natural to seek elsewhere for an explanation of the 

 grand phenomena of the general metamorphism of the schist series. 



If we proceed to consider this same question of the relation existing 



between granite and the schists from the mecha- 

 Relations of the gra- . . . . 



nite and schists : mecha- meal point of view, we find the conclusion above 



suggested, namely, the independence of the schist 

 series of influence clue to the granite, confirmed. 



The stratigraphic condition of the schists, the dip and strike, &c. of 

 their beds has never, on the large scale been seen to be affected by the 

 presence of the patches of granite. It is true that in detail, as we have 

 shewn above, granite dykes have occasionally broken throuo-h the beds 

 of the schists, but these cases are local, and trifling, when the very great 

 mechanical disturbance of the whole series is considered, and it is certain 

 that on the great scale, the general dip and strike of the country hold their 

 direction apparently quite independently of the granite protrusions. Just 

 as, lithologically considered, the schists are quite as crystalline, and as 

 highly metainorphic in aspect away from the granite as near to it, so, 

 mechanically considered, their beds are as highly inclined, and as much 

 contorted, at a distance from the granite, as within a few feet of its 

 boundary. 



There is, however, one fact bearing on this question which to some 

 extent would seem to establish a connection between the granite and 



