320 DIRECTOR-GENERAL OF THE SURVEY CHAP, x 



Campbell stuck by us as far as Armagh, when he 

 branched or shunted off to speak Gaelic to the folk in 

 the north-west. 



Thanks for your remarks on Arran. I have seen 

 the Mourne Mountain and Slieve Croob granites, and 

 one of them took away my breath. [Here follows a 

 rough sketch showing an upper cake of contorted and 

 baked Silurian strata with basalt dykes, underlain and 

 cut off by a mass of granite.] That is in the Mourne 

 Mountains, and the drawing represents the crest of a 

 large mountain a mile or two long ; it is one of many 

 such. 



When I saw it drawn in a section I could scarce 

 believe it. But I saw it afterwards on the ground, and 

 it is true. Ever sincerely, A. C. RAMSAY. 



The loughs of Ireland, as might have been expected, 

 roused the enthusiasm of one who had studied lakes 

 so closely, and had been involved in so much contro 

 versy about them. Regarding those of Fermanagh he 

 tells Mrs. Cookman : These lakes here (Upper and 

 Lower Lough Erne) first took away my breath, then 

 made my hair stand on end, and then confused my 

 intellect so lamentably that I doubt if I will ever 

 write sense any more. They are the most curious 

 lakes I ever saw/ 



DUBLIN, 1 1 th October 1872. 



MY DEAR GEIKIE Since I wrote to you I have 

 been at Sligo and Boyle, and I now write to say that 

 near Boyle I saw Old Red Sandstone, which doubtless 

 is Lower, and it contains bands of felspathic lavas 

 precisely like those of the Pentlands and Oban. I 

 have seen no Old Red Sandstone that is not Lower 



