OCTOBEB. 459 



face of a steep rock down which the torrent fell 

 resembling a number of cricket balls strung together, 

 and saturated with water like sponges. In a shadowy 

 recess, on the side of this waterfall, I gathered a fine 

 specimen of Marchantia Jiemisphcerica, as well as the 

 green Socket-Lichen (Solorina saccatct), the rare Col- 

 legia spongiosum, and Peltidea venosa, all in fine fruit. 

 Approaching now towards the head of the cwm we 

 had been following up so long, our course was barred, 

 and we climbed up the rocky side turning towards 

 the crest of the mountain, but leaving the wild watery 

 ravines with some reluctance. The Melancholy Thistle 

 (Cnicus lieteropliyllus), with its silver leaves, occurred 

 under a rock about midway up the Glyder, and the 

 ground about the summit was most beautifully verdant 

 with the prostrate stems of the Mountain Juniper 

 (Juniperus nana), which was profusely in fruit. We 

 now descended to a little lake called Llyn y Own, into 

 which my botanical guide waded to obtain Lobelia, 

 Dortmanna, and the curious alpine water plants Subu- 

 laria aquatica and Isoetes lacustris. 



We next followed the stream issuing from the lake 

 till it approached a black barrier of rocks, in whose 

 front appeared a narrow fissure for the admission of 

 the stream, and for it alone. Here it paused mur- 

 mured, curldled, foamed, and hurrying into the gulphs 

 whose impending masses shadowed it on either side, 

 it suddenly rushed on and flung itself shrieking into 

 an obscurity the eye was unable to penetrate. This 

 dark passage is the portal into the celebrated recess 

 denominated Tivll Du, literally the Hack hole, or 

 vulgarly called " the Devil's Kitchen." Hitherto it 

 had been a glorious autumnal day, but we were now 



