ON PHOTOGRAPHS OF GEOLOGICAL INTEREST. 



Mottled Reading clay. 1911. 



313 



6756 Bishop's Stortford, Day's brick 



yard 



6757 (1) Ware 



6768 (2) Ware 



6759 (3) Ware 



6760 



6761 



6762 



6763 



6764 



6765 



6766 



6767 



6768 



6769 

 6770 



6771 



6772 



6773 



6774 



6775 

 6776 



Glacial sands and gravels. 1915. 

 Glacial sands and gravel. 1915. 

 Glacial sand and gravel, marked cross- 

 bedding. 1915. 

 Laminated glacial clay. 1915. 



4) Ware, claypit of Ware Brick- 

 fields, Ltd. 



5) Ware, claypit of Ware Brick- Glacial sand and gravel overlain by 

 fields, Ltd. boulder clay. 1915. 



6) Ware, claypit of Ware Brick- Glacial sand and gravel overlain by 

 fields, Ltd. boulder clay. 1915. 



8) Tyttenhanger Pit, near St. Boulder clay and glacial sands. 1913. 

 Albans 



9) Tyttenhanger Pit, near St. Boulder clay and glacial sands and gravel, 

 Albans 1913. 



10) Near St. Albans, ? Hill End Chalky boulder clay on glacial sand and 

 Pit gravel. 1913. 



11) Near St. Albans, ? Hill End Chalky boulder clay on glacial sand and 

 Pit gravel. 1913. 



12) Hill End Pit, near St. Albans Chalky boulder clay on contorted sand 



and gravel. 1913. 



13) Hill End Pit, near St. Albans Contorted gravel underlying chalky 



boulder clay. 1913. 



14) Hill End Pit, near St. Albans Contorted glacial gravel. 1913. 



15) Hill End Pit, near St. Albans Chalky boulder clay overlying glacial 



sand and gravel. 1913. 

 16 Hill End Pit, near St. Albans False-bedded glacial sand and gravel. 



1913. 



17) N. of Cuffley . . . Block of Hertfordshire puddingstone. 



1913. 



18) N. of Cuffley . . . Block of Hertfordshire puddingstone. 



1913. 



19) Bayfordbury Park, near Hert- Boulder clay on glacial gravel and sand, 

 ford 1913. 



20) Railway cutting E. of Bayford Boulder clay and sknd. 1913. 



2 1 ) Railway cutting E . of Bayford Boulder clay and sand . 1913. 



6777 Tunnel, 1 mile N. of Hertford . Gravel and boulder clay overlying chalk. 



1914. 



6778 Watton Cutting, Hertford . . Boulder clay and gravel. 1914. 



6779 Watton Cutting, Hertford . . Boulder clay and gravel. 1914. 



6780 N. end, Watton Cutting, Hertford Current-bed"ded gravel with large sand 



lenticles below boulder clay. 1914. 



6781 N. end, Watton Cutting, Hertford Current-bedded gravel with large sand 



lenticle below boulder clay. 1914. 



6782 N. end, Watton Cutting, Hertford Current-bedded gravel below boulder 



clay. 1914. 



6783 Stevenage .... Cutting in boulder clay. 1914. 



Photographed by G. G. Lewis, Ellerslie Road School, London, W. 12. 1/4. 



6784 Between Rickmansworth and Current bedding in glacial gravel. 1925. 



Harefield 



6785 Between Rickmansworth and Erosion channel in Chalk filled with 



Harefield glacial gravel. 1925. 



Kent. — Photographed by the late T. W. Reader and presented by 



F. W. Reader. 1/4. 



6786 Heme Bay .... Upper part Thanet Sands and base of 



Reading beds. 1912. 



6787 Heme Bay .... Palaeolithic gravels. 1912. 



6788 Heme Bay .... Section London Clay to Thanet beds. 



1912. 



