338 DIRECTOR-GENERAL OF THE SURVEY CHAP, x 



of the latter. It is a long story. We saw much moraine 

 matter en route up. There is no description of that 

 area in my Old Glaciers of North Wales, and no printed 

 description of Moel Tryfaen gives an account of all 

 that we saw. I shall write a note about it for the 

 Geol. Soc., and also put it in my new edition of 

 North Wales, when I have digested it. In the 

 meanwhile, I see nothing in it adverse to my broader 

 views in the Old Glaciers of North Wales. 



From Moel Tryfaen we walked across moor and 

 hill to Llanberis, that I might get a notion of the great 

 extension of the slate-quarries since I first mapped 

 the country some twenty-seven years ago. ... I re- 

 examined the Cambrian rocks at Bangor the other day, 

 and found that the Arenig beds lie directly upon them, 

 without the intervention of the Tremadoc Slates and 

 Lingula Flags, as I have all along maintained. This is 

 an important point for me versus mere stratigraphico- 

 palaeontological men who delight in finding errors in 

 Survey views. I wish you could find Arenig beds 

 directly on the Cambrians in the West Highlands. 



On the 1 4th September he sailed for Gibraltar. 

 With the assistance of his colleague, Mr. James Geikie, 

 he made a careful survey of the Rock and a portion 

 of the surrounding ground, steamed in a gunboat along 

 the Spanish shores, crossed to the opposite mainland, 

 and sailed for fifty miles along the African coast so as 

 to get a bird's-eye view of the geology for purposes of 

 comparison with that of the northern side, spent three 

 days in Africa geologising and wandering among 

 Moors, camels, and the picturesque but odorous 

 streets and suburbs of a Moorish town. He was 

 back in England on the 3<Dth October. 



