1848 BRITISH ASSOCIA TION A T SWANSEA 135 



ground, if one, still do not present the beginning of 

 life, unless a lingula and trilobite were first called into 

 existence where now reposes Marchllyn Mawr. 



30^. Out after breakfast to touch up part of the 

 sandstones and make out part of the Snowdon section 

 on the ridge above the Pass of Llanberis. What with 

 the interminglings of ash and slate, I see it will be a 

 matter of extreme difficulty, especially as the rocks are 

 much rolled. 



ist July. Stormy and cold. Up the Pass of 

 Llanberis. Set to work to trace the steep ridge of 

 Llechog. Up and down twice, and half up and down 

 several times. Steep work, consequently not much to 

 show for it. I climbed up and down places that 

 from the road seemed impracticable. 



These labours were for a brief interval suspended 

 while Ramsay went to Swansea to attend the meeting 

 of the British Association. Under the hospitable roof 

 of Mr. Dillwyn (whose son had married one of De la 

 Beche s daughters), and with Sir Henry himself as a 

 guest in the house, he spent a memorably pleasant 

 week. He acted again as one of the secretaries of 

 Section C, and read a paper On some Points con 

 nected with the Physical Geology of the Silurian 

 District between Builth and Pen y bont, Radnorshire. 



i \th October. Splendid morning. Started at half- 

 past nine for the hills at the top of the Pass, and sent 

 Gibbs to search the ridge of Snowdon. Sir H. and 

 Forbes [who had recently joined him at Llanberis] fol 

 lowed about half-past ten for the top. While at work 

 on the side of Crib goch I heard Selwyn s well-known 

 shrill shout, and soon discovered him on the top of a 

 crag on Crib goch. So we joined and compared notes, 

 and soon put matters straight at Glas lyn. We then 



