n, at a depth of about seven feet, the slab of
tooled Sarsen already referred to was discovered, and on it a very
small stain of copper carbonate. The depth at which this stone was
discovered precludes the possibility of metal being thus sunk by moles
or rabbits.

This list, like the details of the foreign stones, may not be of
general interest, but it affords a very powerful argument for the date
of the structure.

To summarise the "finds." The metal objects found consist of various
coins ranging from Roman to recent times, about half a dozen in
number, all coming from the surface, and none at a greater depth than
ten inches. In other words, they may be classed as "superficial"
finds, of very little value; the more so, as some of the more recent
coins were found at a greater depth than those of earlier date. The
only other trace of metal is the small green stain upon the slab of
Sarsen already alluded to. This stain can only have been caused by the
contact with the stone of a small fragment of copper, which appears to
have been entirely decomposed, as no traces of it could be found. It
must have been very minute, since had it exceeded one-eighth of an
inch, it could not have escaped the mesh of the sieve employed in
searching for it. Clearly, therefore, it could not have been an
implement; perhaps it was an ornament.

On the other hand, the Stone Implements discovered number one hundred
and fifteen, and were found scattered through the excavations at all
depths, and even under the foundations of one of the foreign stones.

Probably the entire area of Stonehenge, if opened up, would yield over
seven thousand examples.

The evidence of the Stone Implements goes far to give the date of the
building. Horn picks similar to those employed at Stonehenge have been
found in considerable numbers at Grimes Graves, where they were used
for excavating chalk in order to win flint for implement making. Other
picks have been found at Cissbury, near Worthing, where similar chalk
workings existed. This resemblance between the finds at Stonehenge,
Cissbury, and Grimes Graves, does not, however, end with the picks; it
is repeated in the similarity of the Implements of Stone, those at
Stonehenge being in some cases the counterpart of those found in the
other localities.

The Cissbury Implements have been assigned "to the Stone Age, or at
any rate to the Age of Flint manufacture" by General Pitt Rivers, who
discovered and reported u