1876.] Deposits containing Flint Implements . 295 
still being worked, and that flint implements were occasion- 
ally, though rarely, turned up ; and on a subsequent visit 
with Mr. Evans they succeeded in disinterring one them- 
selves. 
The valleys of the Waveney and its tributaries are 
bounded by low hills of gravel and boulder clay. The bed 
rock is not seen in any of the sections exposed, but it is 
supposed to be chalk. The gravels and sands (the middle 
glacial sands and gravels of Mr. Searles Wood, jun.) are 
exposed in many gravel-pits on both sides of the Waveney. 
They are sometimes capped by the upper boulder clay ; at 
others, by a more sandy bed with stones (the ‘Trail ” of Mr. 
Fisher), which in some of the sections graduates into the 
upper boulder clay, of which I believe it to be the modified 
representative. One of the deepest sections on the north 
bank of the Waveney is near the road from Diss to Harleston, 
at Billingford, where the series of beds shown in Fig. 1 are 
exposed. 
Fig 1 
Fig. x. — Scale 12 feet to x inch. 1. Sandy clay or “ trail,’' with patches of sand(s) 
and scattered flints, mostly in nests, at the irregular base of the deposit. 
3. Sands and gravel, false bedded with lenticular beds of sand (s), and in the 
lowest seams rounded pebbles of chalk. 
Mr. Fisher some time ago called attention to the great 
importance of the upper bed, or “ trail,” in the study of the 
glacial beds,* but it has not yet received the notice it 
deserves. It is the most persistent of all the beds in the 
South-eastern counties, and can be traced, in almost every 
sedtion, from Norfolk into Surrey. It is everywhere seen in 
the Thames valley lying on the top of the lowland gravels, 
and is shown in great perfection in the long sedtion now 
(March, 1876) exposed between Acton and Hanwell, on the 
* Quart. Journ. Geol. Soc., vol. xxii., p. 553. 
