18461856] CLEAVAGE AND FOLIATION 



207 



I can say is, that in the three or four great regions, where I Letter 541 

 could ascertain the relations of the metamorphic schists to 

 the neighbouring cleaved rocks, it was impossible (as it 

 appeared to me) to admit that the foliation was due to 

 aqueous deposition. Now that you intend agitating the 

 subject, it will soon be cleared up. 



Fig. 6. 



To C. Lyell. 



27, York Place, Baker Street [1855]. 



I have received your letter from Down, and I have been 

 studying my S. American book. 



I ought to have stated [it] more clearly, but undoubtedly 



Letter 542 



