544 THE MELAPHYRE8 AND FELSITES OF CAKADOC. 



The AuTHOK, in reply, stated that he had not seen the large- 

 scale map of Caradoc, mentioned by the President, nor was he 

 aware that Prof. Lapworth had mapped these volcanic rocks. He 

 trusted, however, that, in both instances, the results would be 

 found to correspond. 



lie fully endorsed Prof. Eonney's remarks with reference to the 

 difficulties met with in attempting to work out the original structurcH 

 in the felsites. 



i 



