ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 269 



7446 (B.44) Elham Valley . . . Infilling of Lenhain beds in Chalk. 



7447 (B.45) Elham Valley . . . Infilling of Lenham beds in Chalk. 



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



South Croydon. 1/4. 



7448 (26-16) Quarry 1 m. S. of Huncoat Accrington mudstone (Coal Measures). 



Station 1926. 



7449 (26-15) Worsaw Knoll, 2 m. N.E. Knoll in Salt Hill Series (S.). 1926. 



of Clitheroe 



7450 (26-14) Black Hill, near Whalley . Current bedding in L. Coal Measures. 



1926. 



7451 (26-13) Harper Clough Qu., near Bedding plane in 3rd grit with Stigmaria 



Rishton impressions. 1926. 



Photographed by J. Ranson, 174 Willows Lane, Accrington. 



7452 (1) Worsaw Knoll, 2 m. N.E. of Knoll in Salt Hill Series (S.). 



Clitheroe 



7453 (2) Whalley banks, near Whalley. Millstones in Lower Millstone Grit. 



7454 (3) Whalley banks, near Whalley . Millstones in Lower Millstone Grit. 



7455 (4) Close Brow Qu., Rishton, near Terminal curvature in Millstone Grit 



Blackburn attributed to N.W. ice-sheet. 



7456 (5) Wiswell Qu., near Whalley . Terminal curvature in Millstone Grit 



accentuated by ' creep.' 



7457 (6) River Calder, near Whalley . Block of glacial conglomerate. 



7458 (7) Close Brow Qu., Rishton, near Haslingden flags. 



Blackburn 



7459 (8) Close Brow Qu., Rishton, near Ripple-marked Haslingden flags. 



Blackburn 



7460 (9) Close Brow Qu., Rishton, near Pitting probably due to worm-borings in 



Blackburn Haslingden flags. 



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



South Croydon. 1/4. 



7461 (9-1) Harefield, The Great Pit . London Clay on Reading beds on Chalk 



(31. cor-anguinum zone). 1909. 



7462 (9-2) Harefield, The Great Pit . Reading beds on bored surface of Chalk. 



1909. 



Photographed by the late T. W. Reader, and presented by F. W. Reader. 1/4. 



. Flints rounded by 24 hours' grinding in 



mill. 1913. 

 . London Clay on Upper Reading mottled 



clay. 1913. 

 . Reading beds on Chalk. 1913. 

 . Current bedded sands at base of Reading 



beds overlain by Reading Clay. 1913. 

 . Current bedded sands at base of Reading 



beds. 1913. 

 . London Clay. 1913. 

 . Woolwich and Reading beds. 1913. 



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



South Croydon. 1/4. 



7470 (19-27) Beeston Cliff, E. of Sher- Cliff chiefly of Contorted drift, Weybourn 



ingham Crag at base. 1919. 



7471 (26-28) Hunstanton, the cliff . General view of White Chalk, Red Chalk, 



and Carstone. 1926. 



7472 (26-29) Foreshore, Hunstanton . Erosion of Carstone along joints. 1926. 



