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        THE ENGRAVER.
   ENGRAVING is one of the fine arts
by which different subjects are repre-
sented on copper, wood, stone, &c.  1
is performed either with the graver, the
dry point, or with aqua-fortis. There are
several species of engravings on copper,
as engraving in aqua-tinta; in the chalk
manner; in mezzotinto with aqua-lortis;
and in lines, which is the original art
of engraving.  The tools necessary for
engraving in lines are gravers, a scraper,
burnisher, an oil-stone, a sand-bag, an
oil-rubber, and some good charcoal.
  Etching is a method of engraving on
copper in which the lines or strokes, in-
stead of being cut with a tool or graver,
are bit in with aqua-fortis or nitrous
acid.
  Engraving on wood is a process exactly
the reverse of engraving on copper. In the
latter the strokes to be printed are sunk or
cut into the copper, and a rolling press is
used for printing it; but in engraving on
wood, all the wood is cut away, except the
lines to be printed which are left standing
up like types, and are printed like letter-
press.  Box wood is used for this pur-
pose.