62 



pottery purposes, and contains small nests of Steatite. The bouldei-ed 

 condition of tlie Felstone-bed was considered due to its partial breaking up 

 on being erupted under water, the soft matrix of Felspatbic Tuff being the 

 portion more intimalely divided, and the compact boulders fragments that 

 had resisted di.^iulegi-aiion. The sudden alternation in Middletown HiU 

 of eruptive beds of very disshnilar character was noticed; they seem to 

 have beeu eiiiitied in immediale succession, as, although overlain and 

 tinderlain by sedimentary deposits, there is no evidence of interstratifi- 

 catiou of sedimentary beds. The aiitbor, in conclusion, pointed out the 

 close geographical association with these bedded Traps of the much later 

 porphyritic greenstone of the Breidden Hills, which, it was suggested, 

 mi"ht have been emitted from the same point of eruption: and the local 

 association of the intrusive greenstone with the Lower Silurian interbedded 

 Felitones was noticed as being very general in North Wales." 



A sharp scramble up the precipitous sliotiTdev revealed a fine 

 prospect over Welslipool and the Denbighshire hills beyond. 

 In passing from Moel-y-Golfa to the Breidden, an intermediate 

 valley was crossed, eroded in the Lower Llandeilo Shales. Then 

 commenced the ascent of the Breidden proper, on the summit of 

 which stands the obelisk erected to the memory of Admiral Lord 

 EoDNET, known as the Eoduey Pillar. Its height is slightly 

 under 1300 feet above the sea, and commands a noble prospect. 

 In front is seen Llanymynych, the southern extremity of the 

 great Carboniferous Limestone range which runs through North 

 Wales to Oswestry, west of which are seen the Denbighshire 

 hills by Welshpool and Montgomery to the Long Mountain 

 and the Shropshire Silurians. But a short halt was made to 

 admire the beauty of the prospect, as time was limited, and 

 the discovery of Potentilla Bupestris, the exact habitat of which 

 nobody quite knew, had yet to be effected. So, under the 

 leadership of Mr. Maw, away went the botanists of the party, 

 " thoro' bush thoro' briar," in quest of the coveted species for 

 which the Breidden Hill is the only known locality in Great 

 Britain. Long and tedious was the scramble, and doubts of 

 success were beginning to damp the ardour of pursuit, when 

 a shout from Mr. Maw proclaimed the welcome ''Eurel-a!" 

 Immediately below the eastern extremity of the Breidden, on 

 the bare precipitous slope of the eruptive trap rock Potentilla 



