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Primaeval Man in the Valley of the Lea. 
that the men probably knew nothing of dressing skins, and 
were unclothed. 
The oldest implements, owing to their great amount of 
abrasion, are often difficult to recognise when they lie in the 
roads or on heaps of gravel; in fact some are so water-worn 
and smooth that they look, at first sight, but little different 
from the unworked natural flints. 
Fig. 10.—Pointed weapon, one half actual size. 
In and near London lustrous and subabraded tools of 
medium age are commonly found at a depth of 12 feet; these 
tools show a distinct improvement in workmanship over the 
older ones. Most of the examples are lingulate and sharply 
acuminate; and the butt, and sometimes the umbo, show 
signs of hammering; the ovate form is not uncommon, 
but implements of this age with a cutting edge all round 
