All table Glass ware and hollow articles are thus cut; chandelier drops are also similarly cut, with iron and stone wheels, except the polishing, which is done with a lead wheel, or lap, supplied with a little very fine rotten-stone and water. The sides of the lead lap are occasionally roughened, or notched, like a file, to enable its recesses to hold the above. When the sides become smooth by use, they must be re-notched, like millstones for grinding flour.

The steam-engine has almost excluded hand labour for turning cutters' lathes.

The period when the art of engraving Glass borders and arabesques was first practised, cannot be satisfactorily ascertained. Intaglio and cameo figure engraving, upon real and artificial stone, is known to have been employed by the Greeks and Romans at a very early period, (prior to the Christian era;) their artists wrought and studied in the purest and highest range of statuary engraving; and it is probable that the bas-relief on the Portland and Naples Vases were engraved at the lathe by