60 Alexander Goodman More. [iS54 



rills, and mostly boggy ground, where Fay spied out one 

 plant of Lycopodium clavatum, and Selago began to be 

 abundant. Presently, after crossing 'a good bit of flat 

 overstrewn with loose flat blocks of rock, we saw Llyn y 

 Cwn (called Klin i Coon), and leaving this on the right, 

 soon came upon the head of the fissure of Twl Du, through 

 which the stream plunges down towards Llyn Idwall. 

 The view through this chasm is very fine, and you see the 

 pass of Nant Fran con and an extremity of Llyn Ogwell. 

 The whole hollow round the lake is surrounded by the 

 awfully precipitous Dark Rock. 



"After one look at the view, I lost no time in scrambling 

 down as well as I could into the chasm, regardless of water 

 and slippery rocks. Here at once appeared for the first 

 time during our walk a number of alpine plants. Silene 

 acaulis (cushion pink) in plenty, and we found two or three 

 in flower; Arenaria verna (spring sandwort) ; Rhodiola 

 (rose-root) with its very flaccid leaves now drooping all along 

 the rocks ; Saxifraga stellaris (starry saxifrage) ; Hiera- 

 cium, one or two species ; Oxyria reniformis (mountain 

 sorrel), rather common ; Poa balfourii in some plenty ; 

 Hymenophyllum wilsoni (Wilson's filmy-fern) sparingly; 

 Cystopteris (bladder- fern); Lycopodium alpinum (mountain 

 club -moss); Thalictrum minus (?) (lesser meadow-rue); 

 Solidago (golden-rod) var. ; Oreopteris (sweet mountain 

 fern). From a little way down, where you find the passage 

 stopped, there is a view even better than from the top. 



" We now resolved to descend and explore from below, 

 and after a very steep scramble over loose stones and 

 blocks where we found Asplenium viride (green spleen- 

 wort) in some plenty, and Saxifraga oppositifolia (purple 

 mountain saxifrage), we got to the lower entrance of the 

 chasm. . . . We sat down for a few moments to lunch, and 

 then I scrambled up the torrent, a most difficult business. 

 However, there were many good plants to reward the exer- 

 tion : Meconopsis cambrica (Welsh poppy), and one plant 

 of Saxifraga nivalis (alpine saxifrage) in full flower ; Poa 

 balfourii ; Arabis hirsuta, certainly not ciliata ; Saxifraga 

 hypnoides in plenty, but I failed to get caespitosa, though I 

 looked carefully ; and most of those gathered at the sum- 



