can be obtained for portable seats in the
cellar.

The floors are laid on terra-cotta arches, built on iron beams, and
the beams are protected by terra-cotta casings.

The roof of the building is to be covered with slate [preferably red],
laid on terra-cotta and supported by iron trusses and beams; the
iron-work to be protected by a fireproof covering. The tower roofs
contemplate granite, lapped and jointed so as to be weatherproof, laid
on iron beams and supported by iron trusses. If a cheaper covering is
desired, slate or tile can be used without affecting the design.

The ceiling is a barrel-vault with large and small arched ribs
pierced in each bay by the small vaults in which the clerestory
windows open. It may be treated in one of three ways: first, finished
in marble; second, marble ribs, the larger surfaces being terra-cotta
blocks covered with mosaic tile; third, the larger surfaces frescoed
on plaster. The ceiling of the lantern in the centre of the cathedral
will be supported by arch trusses, and show metallic ribs on the
interior, glazed with cathedral glass.

The screens between the choir and aisles and between the aisle and
vestries and chapels are intended to be of wrought-iron, bronze or
brass, or a combination. They should be arranged so as to slide down
into the cellar and leave the entire building open and unobstructed
whenever it might be thought desirable.

The outside doors are to be bronze, with figures on them in low
relief.

The size of columns and piers, and the weights imposed upon them, the
thrusts of arches and trusses, their proper abutments and ties and
other constructional problems have been calculated with a sufficient
degree of accuracy to determine the feasibility of the execution of
the design according to the drawings.

In the lantern where the frescoing is contemplated the wall will be
faced with porous brick, on which the proper fresco plaster can be
spread.

The plan is arranged to facilitate the ingress and egress of large
assemblages of people, five doorways being provided in the nave
entrance and two in each of the transepts. The galleries over the nave
and transept vestibules and the triforium have stairways with
entrances on the side porches. Including the clergy entrances, fifteen
outside doors are planned. The vestibules and porches connect with
each other so that worshippers can pass from one to the other under
cover.

The arrangement adopted for the central