168 FLINT IMPLEMENTS IN SUFFOLK. chap. ix. 



in situ in regular strata and pi-cservcd by Sir Edward Kerrison, 

 no bones of extinct mammalia seem as yet to have been act- 

 uall}^ seen in the same sti-atum with one of the tools. 



By reference to the annexed section, the geologist will see 

 that the basin-shaped hoUow a, b, c, has been filled uj^ gradually 

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



Fis. 24. 



Section ghowing the position of the flint weapons at Iloxne, near Diss, Suffolk. 

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



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



2. Ilighcr-level gravel overlj-ing the fresh-water deposit. 



3 and 4. Sand and gravel, with fresh-water shells, and flint imple- 

 ments, and bones of mammalia. 



5. Peaty and claj-ey beds, with same fossils. 



6. Boulder claj' 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 Mundcsley, about thirty miles distant from 

 Hoxne, in a north-northeast direction. 



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

 the advantag-e of being accompanied by the Rev. J. Gunn, and 

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

 we observed the common river shell Valvata 2^iscinalis in 

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

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

 BUhynia tentaeulata, Cyclas cornea; and Mr. Prestwich 

 mentions Cydas amnica and fragments of a Unio, besides 



