are numerous, no one has yet been able to make any definite statement as
to the period to which they belong. The Costa Beck, a stream flowing from
the huge spring at Keld Head, on the west side of Pickering, was being
cleaned out for drainage purposes at a spot a little over two miles from
the town, when several pieces of rude pottery were thrown on to the bank.
These excited Mr Mitchelson's interest and at another occasion his
examination revealed more pottery and mixed up with the fragments were the
bones of animals. Some piles forming two parallel rows about 4 feet apart
were also discovered crossing the stream at right angles to its course.

The diagram given here shows the position of the piles as far as they were
revealed in one of the excavations and it also shows their presumed
continuation, but no reliance can be placed on anything but those actually
dug out and indicated with a solid black spot. The piles were made of oak,
birch and alder, with very rough pointed ends, and they measured from 6 to
10 inches in diameter. Three other rows cross the Costa in the same
neighbourhood separated by a few hundred yards and as they lie at right
angles to the stream which there forms a concave bend, they appear to
converge upon one point. This would be what may roughly be termed an
island between the Costa and a large drain where water in ancient times
probably accumulated or flowed.

There can therefore be little doubt that the island was the home of
prehistoric lake-dwellers who constructed their homes on rude platforms
raised above the water or marshy ground by means of piles after the
fashion of the numerous discoveries in Switzerland, and the present habits
of the natives of many islands in the Pacific. Among the quantities of
skulls and bones of animals, pottery and human skeletons, no traces of
metal were brought to light and the coarse jars and broken urns were, with
one exception, entirely devoid of ornamentation. The ground that was