168 FLINT IMPLEMENTS IN SUFFOLK. CHAP. ix. 



in situ in regular strata and preserved by Sir Edward Kerrison, 

 no bones of extinct mammalia seem as yet to have been 

 actually seen in the same stratum with one of the tools. 



By reference to the annexed section, the geologist will see 

 that the basin-shaped hollow a, b, c, has been filled up gradually 

 with the fresh- water strata 3, 4, 5, after the same cavity a, 6, c, 

 had been previously excavated out of the more ancient boulder 

 clay, No. 6. The relative position of these formations will be 

 better understood when I have described in the Twelfth 



Fig. 24 



farm 



Sea, Level 9 Chalk 



Section showing the position of the flint weapons at Hoxne, near Diss, Suffolk. 

 See Prestwich, Philosophical Transactions, PI. 11. 1860. 



1 Gravel of Gold Brook, a tributary of the "Waveny. 



2 Higher-level gravel overlying the freshwater deposit. 



3 and 4. Sand and gravel, with freshwater shells, and flint imple 



ments, and bones of mammalia. 



5 Peaty and clayey beds, with same fossils. 



6 Boulder clay or glacial drift. 



7 Sand and gravel below boulder clay. 



8 Chalk with flints. 



Chapter the structure of Norfolk and Suffolk as laid open in 

 the sea-cliffs at Mundesley, about thirty miles distant from 

 Hoxne, in a North North-east direction. 



I examined the deposits at Hoxne in 1860, when I had 

 the advantage of being accompanied by the Rev. J. GKmn, and 

 the Rev. S. W. King. In the loamy beds 3 and 4, fig. 24, 

 we observed the common river shell Valvata piscinalis in 

 great numbers. With it, but much more rare, were Limnea 

 palustris, Planorbis albus, P. spirorbis, Succinea putris, 

 Bithynia tentaculata, Cyclas cornea; and Mr. Prestwich 

 mentions Cyclas amnica and fragments of a Unio, besides 



