7565 



7566 



7567 



7568 

 7569 

 7570 



7571 



7572 

 7573 



7574 



7575 



7576 



7577 



7578 

 7579 

 7580 

 7581 



7582 



7583 



7584 



7585 



7586 

 7587 



ON PHOTOGRAPHS OF GEOLOGICAL INTEREST 



2) Cormorant Rock, Aberystwyth 



27,'J 



stack of 



SI) ore platform and sea 

 Aberystwyth grits. 192(1. 

 A hanging fall. 1922. 



Pot-holes. 1922. 



Storm beach. 1922. 



Submerged forest. 1923. 



Pebble beach of doubtful origin running 



out to sea. 1922. 

 Sharp folding giving effect of uncon- 

 formity. 1924. 

 Denudation along a ' smash plane.' 1926. 

 Coincidence of cliff face with bedding 



plane. 1922. 

 Shore platform with curved strike, dip 



faults and miniature escarpments. 1922. 

 Marine pot-hole formed at base of cliff 



by wave action. 1925. 

 Fault plane and marine erosion along iU 



1925. 

 Erosion of cliff along bedding plane. 



1922. 

 Pitching anticline. 1925. 

 Pitching anticline. 1925. 

 Pitching anticline. 1925. 

 Reversed fault and cave formed along it. 



1925. 

 Cubical blocks resulting from erosion 



along bedding and joint planes. 1922. 

 Contorted strata hi plan. 1923. 



Erosion of boulder clay cliffs. 1926. 



Erosion of cliffs of boulder clay showing 



banding. 1926. 

 Boulder clay pillars. 1926. 

 Stacks and cliffs showing bedding and 



jointing. 1926. 



Carnarvon.— Photographed by G. M. Davies, M.Sc, 104 Avondale Road, 



South Croydon. 1/4. 



7588 (20-10) Porthdinllaen, near Morfa Precambrian spilite 



Nevin 



7589 (16-5) Porthdinllaen, near Morfa 



Nevin 



7590 (16-7) Forth Wen, near Morfa 



Nevin 



3) Nant-y-golomen ddu Rheidol 

 valley 



4) Rheidol gorge, \ m. S. of Pont 

 Erwyd 



5) 1£ m. N. of Borth 



6) 1 m. N. of Borth . 



7) Sam Cymfelyn, Wallog . 



8) N. of Clarach Bay, Aberyst- 

 wyth 



9) S. of Clarach Ba}', Aberystwyth 



10) S. of Clarach Bay, Aberyst- 

 wyth 



11) S. of Clarach Bay, Aberyst- 

 wyth 



12) S. of Clarach Bay, Aberyst- 

 wyth 



13) Shore about £ m. N. of 

 Aberystwyth 



14) S. of Clarach Bay, Aberyst- 

 wyth 



15) Shore J m. N. of Aberystwyth 



16) Shore i m. N. of Aberystwyth 



17) Shore | m. N. of Aberystwyth 



18) Shore N. of Aberystwyth 



19) Shore about 

 Aberystwyth 



20) Shore about 

 Aberystwyth 



21) Shore about 

 Aberystwyth 



22) Shore about 

 Aberystwyth 



23) N. of Aberarth . 



24) About £ m. E. of Careg Lydan 



Precambrian spilite. 



1920. 

 1910. 



Cylindrical concretions of sandy-ironstone 

 in Pleistocene-sand. 1916. 



Denbigh. — Photographed by the late T. W. Reader, and presented by 



F. W. Reader. 1/4. 



7591 (8 and 9) Vale of Llangollen. 



7592 (10) Castell Dinas Bran (left) and 



Eglwyseg rocks (right), Llan- 

 gollen 



7593 ( 14) Dee Valley from Castell Dinas 



Bran, near Llangollen 



7594 (15) Eglwyseg Rocks, Llangollen . 



7595 (16) Eglwyseg Rocks, Llangollen. 



7596 (18) Garth Trevor, near Llangollen 



1927 



Drift-covered Vale and Carb. Limestone 



fault-scarp. 1919. 

 The Aqueduct fault passes between the 



two hills. 1919. 



Present and earlier course of the Dee. 



1919. 



Silurian country in foreground, Carb. 



Limestone fault-scarp on right. 1919. 



Fault-scarp of Carb. Limestone. 1919. 



Grit of Cefn-y-fedw sandstone series 



worked for Gannister. 1919. 



