220 MR. W. G. CLARKE ON NORFOLK FLINT IMPLEMENTS. 
latter its waning. In that part of the Eaton pit from which 
the Eoliths come the chalk is overlaid by about 30 feet of 
sands and pebbly gravels. Eoliths occur in the latter chiefly 
in two small beds, one about 16 feet from the surface and 
the other resting on the chalk, a foot above which implements 
have been found in situ. Mr. F. W. Harmer, F.G.S., kindly 
examined the strata and believes that the sands and gravels 
are early glacial, and older than the brick-earth which occurs 
immediately north of Norwich. The comparative regularity 
of the stratification of the gravel and the big beds of sand 
seem, in my opinion, to indicate that the conditions under 
which they originated were not those of torrential streams, 
thus rendering more difficult any explanation of the chipping 
on these flints as the result of natural forces. Supposing 
that man were pre-glacial, the floods that marked the south- 
ward extension of the first great glaciers w T ould naturally 
sweep his flint tools and weapons from the land-surface and 
deposit them among other flints in beds of gravel. Or, 
similarly, if man dwelt in the district during an inter-glacial 
period. But on this question we can, in Norfolk, speak with 
little confidence, and much more investigation is needed 
before a satisfactory decision can be arrived at. 
II. PALEOLITHIC. 
Owing to the sparsity of Norfolk localities in which Paleolithic 
flint implements have been found, and the absence of reliable 
data as to the various horizons, it is improbable that until 
further excavations are made and scientifically described, 
anything will be added to the East Anglian classification 
mentioned by Mr. C. H. Read in the ‘ Guide to the Antiquities 
of the Stone Age in the British Museum.’ (p. 8.) He there 
differentiates three horizons of beds yielding Paleolithic 
implements, all inter-glacial, and one older than the chalky 
boulder clay, the succession of beds in descending order being 
(1) Hessle boulder clay, (2) late paleolithic implements, (3) 
purple boulder clay, (4) intermediate paleolithic, (5) chalky 
