ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 387 



CAnNAUVOii.— Photographed by P. B. Roberts, B.Sc, B.M./F.K.R.S., 



W.C.I. 1/2. 



7979 (13) Tryfan .... Nodular rhyolite in the foreground. 



1924. 



7980 (14) Nant Ffrancon and the Hanging valley. 1924. 



Glyders 



7981 (15) Tryfan .... Spur between two hanging valleys. 1925. 



7982 (16) Tryfan .... Frost- shattered summit of mountain. 



1924. 

 > 



Photographed by F. F. Miskin, F.G.S., 46 Windsor Road, PenartJi, and 

 presented by the National Museum of Wales per Dr. F. J. North. 1/4. 



(N.M.W. i) 



7983 (4245) Upper Swallow Falls, 



Bettws-y-coed 



(N.M.W. i) 



7984 Middle Swallow Falls, Bettws-y- 



coed 



Denbigh. — Photographed by F. F. Miskin, F.6.S., 46 Windsor Road, 

 Penarth, and presented by the National Museum of Wales per Dr. 



F. J. North. 1/4. 



(N.M.W. i) 



7985 (4232) Trevor Rocks, near Llan- Current- bedded Millstone Grit. 



gollen 



(N.M.W. i) 



7986 (4255) World's End . . . Valley along fault in Carboniferous Lime- 



stone. 

 (N.M.W. i) 



7987 (4264) Eglwyseg, near Llangollen . Carboniferous Limestone escarpment. 



Glamorgan. — Photographed by F. F. Miskin, F.G.S., 46 Windsor Road, 

 Penarth, and presented by the National Museum of Wales per Dr. 



F. J. North. 1/4. 



(N.M.W. -1) 



7988 (4133) Bendrick Rock, 1 m. W. of Trias unconformable on Carboniferous 



Barry Island Limestone. 



(N.M.W. i) 



7989 (4175) Barry Island, Little Island Trias unconformable on Carboniferous 



Limestone. 

 (N.M.W. i) 



7990 (4176) Barry Island, Little Island Red Keuper marls with gypsum. 



(N.M.W. i) 



7991 (4166) W. side of Barry Harbour. Disturbed Lias Section. 



(N.M.W. {) 



7992 (4163) St. Marv's Well Bay, 5 m. Overthrust in ' Sully beds.' 



S. of Cardiff ' 



(N.M.W. i) 

 I 7993 (4142) St. Mary's Well Bay, 5 m. Foreshore section of Lower Lias. 

 S. of Cardiff 



(N.M.W. i) 

 7994 (4165) Seven Sisters Cliff, 1 m. S. Keuper marl with Gypsum, 

 of Penarth 



cc2 



