570 MR. F. w. HARMER ON THE AGE OF A PUNT IMPLEMENT 
The various deposits of the Glacial period to be met with in the 
immediate neighbourhood of Norwich are, in descending order, 
as follows : — 
Upper 
Glacial. 
The Cannon Shot Gravels of Household, 
Poringland, etc. 
The Chalky Boulder Clay of Middle and 
South Norfolk. 
Middle 
Glacial. 
(The Sands which underlie the Chalky 
Boulder Clay and form the great heaths 
[ to the North of Norwich. 
Lower 
Glacial. 
The Norwich Brick Earth, which occurs 
over the whole district North of the City, 
and which thickens out into the Contorted 
Drift of the Cromer Coast. 
I'he Bure Valley Marine Gravels, which 
. underlie the Norwich Brick Earth. 
The late Mr. Searles V. Wood and I have classed the Bure Valley 
Gravels as the lowest horizon of the Glacial Series. Mr. IT. B. 
Woodward and some of his colleagues of the Geological Survey 
regard them as belonging to the Crag period, but the difference 
between us is not material to the present inquiry. We all agree 
that these beds are newer than the Norwich Crag and Chillesford 
Clay, and older than the Norwich Brick Earth. 
The evidence which has been up to the present time obtained as 
to the Antiquity of Man in Britain carries it back without any 
question into early postglacial times. Primaeval man certainly 
coexisted in this country with the Mammoth, the Woolly Khinoceros, 
the Cave Bear, and the Beindeer, at a period when the climate 
still retained some of the arctic severity of the Glacial Epoch. 
Mr. Skertchley, who mapped the country round Brandon for the 
Geological Survey, contended that some of the implement bearing 
beds of West Norfolk were overlaid by Chalky Boulder Clay, 
but the evidence was by no means free from doubt, and has never 
been accepted as conclusive by geologists generally. It is impossible 
that man could have existed in any part of East Anglia, while it 
