140 On the Paleolithic Flint Implements from Knowle. 
They are of all sizes from 10 inches to 1 inch. Every form that : 
has been previously represented in Paleolithic flint implements is | 
found here. There are the spear-headed and ovoid forms so 
common among the specimens from the Valley of the Somme; 
long and short drills; scrapers; and many other forms, the uses 
of which it is still so difficult to define. The different types of 
workmanship are, too, so very marked. Some are found fashioned 
and completed with the greatest care, showing, in many cases, no 
signs of use nor of ever having been moved from the place where 
they are found. Others are very rough, and although they show 
undoubted traces of human workmanship they are in a rude un- 
finished condition and bear a great resemblance to many that are now 
placed in the so-called “ Kolithic” class. With these occur others, 
of so highly finished and symmetrical a shape that the inclination 
would be to place them with the “ Neolithic” class, if the position 
in which they were found did not identify them as true Paleoliths. 
Another interest in connection with the Knowle implements is 
the unusually large numbers in which they have been found. The 
pit has an exposed surface of some 40 to 50 yards in width 
from north to south, with a depth of from 10 to 12 feet, and since 
the first specimens were identified in July, 1901, upwards of two 
thousand have been discovered and preserved, and it is painful to 
think of the number that must have been lost before that time, — 
probably being mixed up with the road-metalling and ground into 
the roads. One other marked feature is that some implements are — 
found with a brilliant polish. This polish sometimes covers the ; 
whole of one side and in others only a protuberance. It is so 
marked with some as to give the specimen the appearance of having 
been coated with a solution of glass. This feature will be referred 
to later on and explanations given of its possible cause. The 
question now arises, How did these implements become deposited — 
in these gravel beds? and, as incident to this, What is the origin 
of the gravel beds ? 
Knowle is practically encircled by vallies, all of which are now 
dry, but which must probably have been excavated at some early — 
‘part of the Pleistocene period by intermittent streams, subject to — 
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