1covered
with lute so that they do not catch fire.
In the secondary beams,
where they are laid on the fourth wall, are mortised the lower ends of the
same number of rafters as those in a set of rafters5 opposite them. From
the third long wall these rafters are joined and tied to the ends of the opposite
rafters, so that they may not slip, and besides they are strengthened with
substructures which are made of cross and oblique timbers. The rafters
support the roof.
where they are laid on the fourth wall, are mortised the lower ends of the
same number of rafters as those in a set of rafters5 opposite them. From
the third long wall these rafters are joined and tied to the ends of the opposite
rafters, so that they may not slip, and besides they are strengthened with
substructures which are made of cross and oblique timbers. The rafters
support the roof.
THE FOUR LONG WALLS: A—FIRST. B—SECOND. C—THIRD.
D—FOURTH. THE
SEVEN TRANSVERSE WALLS: E—FIRST. F—SECOND. G—THIRD. H—FOURTH.
I—FIFTH. K—SIXTH. L—SEVENTH, OR MIDDLE.
SEVEN TRANSVERSE WALLS: E—FIRST. F—SECOND. G—THIRD. H—FOURTH.
I—FIFTH. K—SIXTH. L—SEVENTH, OR MIDDLE.
In this manner the front part of the building is made, and is divided into
three parts; the first part is twelve feet wide and is under the hood, which
consists of two walls, one vertical and one inclined. The second part is the
same number of feet wide and is for the reception of the ore to be smelted,
the fluxes, the charcoal, and other things which are needed by the smelter.
The third part is nine feet wide and contains two separate rooms of equal
size, in one of which is the assay furnace, while the other contains the metal
to be melted in the cupellation furnaces. It is thus necessary that in the
three parts; the first part is twelve feet wide and is under the hood, which
consists of two walls, one vertical and one inclined. The second part is the
same number of feet wide and is for the reception of the ore to be smelted,
the fluxes, the charcoal, and other things which are needed by the smelter.
The third part is nine feet wide and contains two separate rooms of equal
size, in one of which is the assay furnace, while the other contains the metal
to be melted in the cupellation furnaces. It is thus necessary that in the