T
HIS chapter may seem
out of place in a treatise on precious and ornamental stones, yet the
chipping of an arrow-point, the grinding and polishing of a groove in
an axe-head, the drilling of a bead or tube or an ear-ornament, all are
done by the application of the same lapidarian methods that are
practised to-day by cutters of agates or precious stones. The cutter of
to-day, with a hammer, chips into shape the crystal or piece of agate
before it is ground ; and there is little difference between the
ancient method of drilling and that of the present. The stone bead of
ancient time was drilled from both ends, the drill holes often
overlapping, or not meeting as neatly as by the modern method of
drilling from one end.
The
old way of drilling is still practised in the East, where the primitive
bow-drill is used by lapidaries to-day precisely as it has been used by
savage tribes in all quarters of the globe, though producing at
different periods different qualities of work. Nowhere was its use
better understood than in ancient Greece and Rome, where by its means
were engraved the wonderful intaglios and cameos which now grace our
museums, and which have never been surpassed in any period of the
world's history. For the special use of gem engraving, the bow-drill
has been replaced by a horizontal lathe, which, however, does not allow
the freedom of