474 
Those who used the ordinary cut gray flints were much 
more enlightened ; they were skilled in the art of making 
pottery, wicker-work, coopering, and general carpentry, 
and canoe building, and the}^ cultivated grain ; while those 
who made their implements of red and black flint were 
undoubtedly far in advance of either: but there can be no 
doubt that they all remained in ignorance of the use of 
metal. This is apparent from the description of tools which 
they used. A flint hatchet is a poor substitute for an iron 
one, a flint plane would never have made smooth work, a 
flint saw must have been only useful for cutting bone, and 
flint fish-hooks of the most perfect form must have been very 
difficult to procure. The flint drills (although they show the 
principle of the screw w T as understood) must have been very 
difficult to use, and very imperfect instruments; flint knives 
and other cutting implements, while they show by their 
excellent edges how much pains was taken in their manu- 
facture, at the same time show how much the people required 
iron. Flint arrow-points and spear-heads, we find, went out 
of use after iron was introduced, but sling-stones were more 
available, and therefore were used down to a late period. 
The district included in this Paper is not more than two 
miles in extent in any direction, commencing at Hildethorpe 
and ending at Danes Dike, and in the transverse direction 
from Bridlington to Bempton (see plate) ; but it forms a 
distinct district, because, not only are all the classes of flint 
implements found there associated with the earthworks, but 
there is distinct evidence that the people were all on friendly 
terms, when a sudden catastrophe overtook them, and they 
were all driven from the district at one time, and never 
returned to it ; yet the weapons used by the invaders can 
nowhere be found, which is sufficient negative proof that 
they were the people who first used iron. 
At Sewerby I found there had been an Ancient British 
