258 REPORTS ON THE STATE OF SCIENCE, ETC. 



Wales. 



Brecon. — Photographed by T. Franklin Sibly, D.Sc, LL.D., Vice- 

 chancellor's Lodge, Reading. 1/2-pl. enl. 



8243 Porth-yr-ogof .... Entrance to the underground channel of 



the Mellte. 1914. 



8244 Near Porth-yr-ogof . . . The Mellte emerging from its under- 



ground channel. 1914. 



8245 Upper Clun-gwyn fall . . Waterfall over fault-scarp. 1914. 



Carnarvonshire. — Photographed by S. H. Reynolds, M.A., Sc.D., The 



University, Bristol. 1/4. 



8246 Snowdon, S. slopes of Lliwedd . Cleaved rhyolite tuff. 1930. 



8247 Snowdon, Lliwedd from the Wat- Precipice of rhyolite tuff. 1930. 



kin track 



8248 Snowdon, Lliwedd from the Wat- Composed of cleaved tuffs of the Lower 



kin track Rhj'olitic series. 1930. 



8249 Snowdon summit and Glaslyn . Crags formed of the Bedded Pyroclastic 



series. 1930. 



8250 Snowdon summit . . . Crags formed of Bedded Pyroclastic 



series. 1930. 



8251 Snowdon summit from the N. . Tuffs with interbedded rhyolites and thin 



dolerite sills. 1930. 



8252 Snowdon, Crib Goch . . . Formed of rhyolite and tuff capped by 



acid intrusion. 1930. 



8253 Snowdon, Bwlch Goch, above Banded acid intrusion. 1930. 



Glaslyn 



8254 Snowdon, near Rhyd-ddu . . Quarry in Llandeilo slate. 1930. 



8255 Beddgelert, near Rhyd-ddu . Nodular base of Snowdon rhyolites. 



1930. 



8256 Snowdon, distant view of Cwm Moraine barrier. 1930. 



Clogwyn du'r Arddu 



8257 Snowdon, Clogwyn du'r Arddu . Moraine-dammed lake. 1930. 



8258 Snowdon, Llyn du'r Arddu. . 1930. 



8259 Snowdon, Cwm Clogwyn du'r Lower Rhyolitic series with interbedded 



Arddu linestone. 1930. 



8260 Snowdon, Af on Trewennydd . Dolerite scree. 1930. 



8261 Tryfan from Capel Curig road . Formed of rhyolite of the Capel Curig 



series. 1930. 



8262 Capel Curig, near Royal Hotel . ?Strain-slip fracture or jointing in grit 



block. 1930. 



8263 View from above waterfall Llyn Bwlch-y-Cywion ' granite ' intrusion. 



Ogwen 1930. 



8264 Llyn Idwal, Nant Ffrancon . . Moraines. 1930. 



8265 Llyn Idwal and Craig ddu . . Ice-worn rock and silting up of Llyn. 



1930. 



Denbigh. — Photographed 'by the late T. W. Reader and presented by 



F. W. Reader. 1/4. 



8266 Pen-y-bont, near Cefn . . Ruabon Marls. 1919. 



8267 Oernant, near Pentre dwfr, Llan- Slate quarry. 1919. 



gollen 



8268 Near Horseshoe Pass, Llangollen . Distant view of Carboniferous Limestone 



escarpment. 1919. 



Glamorgan. — Photographed by A. E. Trueman, D.Sc, F.G.S., University 

 College of Wales, Swansea. 1/4. 



8269 Swansea Bay, about 500 yards E. Submerged Forest looking E . 1929. 



of Black Pill 



