1feet, and of the mouth and bottom one foot.
In the back part of the furnace
is a rectangular hole, measuring in height and width a palm, through which
the heat penetrates into a third furnace which adjoins it.
is a rectangular hole, measuring in height and width a palm, through which
the heat penetrates into a third furnace which adjoins it.
This third furnace is rectangular, eight feet long and six feet wide; it
also consists of two chambers, of which the lower has a mouth in front, so that
firewood may be placed on the hearth which is on the ground. On each side of
this opening in the wall of the lower chamber is a recess for oblong earthen
ware receptacles, which are about four feet long, two feet high, and one and
a half feet wide. The upper chamber has two holes, one on the right side,
the other on the left, of such height and width that earthenware receptacles
may be conveniently placed in them. These latter receptacles are three
feet long, one and a half feet high, the lower part one foot wide, and the
upper part rounded. In these receptacles the glass articles, which have been
blown, are placed so that they may cool in a milder temperature; if they were
not cooled slowly they would burst asunder. When the vessels are taken
from the upper chamber, they are immediately placed in the receptacles
to cool.
also consists of two chambers, of which the lower has a mouth in front, so that
firewood may be placed on the hearth which is on the ground. On each side of
this opening in the wall of the lower chamber is a recess for oblong earthen
ware receptacles, which are about four feet long, two feet high, and one and
a half feet wide. The upper chamber has two holes, one on the right side,
the other on the left, of such height and width that earthenware receptacles
may be conveniently placed in them. These latter receptacles are three
feet long, one and a half feet high, the lower part one foot wide, and the
upper part rounded. In these receptacles the glass articles, which have been
blown, are placed so that they may cool in a milder temperature; if they were
not cooled slowly they would burst asunder. When the vessels are taken
from the upper chamber, they are immediately placed in the receptacles
to cool.