[Footnote 14: The dimensions must not be taken to be quite correct in
all cases, as there are discrepancies and inaccuracies in the building
that prevent measurements being always reliable.]

[Footnote 15: This bath is drawn to a large scale in Pl. VIII.]

The lead in sheets (of about 10ft. by 5ft. square) was turned up at
the edges and _burnt_, not soldered together, but these joints are in
many cases now imperfect. This well secured bottom, or floor, appears
to have been placed in position, rather to keep the hot water from
ascending into the bath from the springs beneath than to make the
bath water-tight. Enclosing the bath all round the four sides are six
steps, the sixth landing the bather on the _Schola_, or platform. The
riser of the bottom steps varies in depth from 15in. to 11in., with a
tread of 14in., the next riser is 14in. with a tread of 11in., as also
is the next step and the one following. The step above has a rise of
12in., and a tread of 14in. This step was scarcely covered with water,
but it is evident the water flowed over it when bathers agitated it.
The riser or the step above, 10in. to 12in., completes the flight and
helped to keep the water within proper bounds, giving a total depth of
6ft. 8in. to the bath, and from 5ft. 9in. to 5ft. 11in. for the water.
These steps are quite devoid of lead (except, in places, the riser
of the lower step and at the north-west corner), and it is not clear
whether they had at any time such a covering, although I am inclined
to think so, as it evidently went beneath the piers and under the
central pedestal. At the bottom step, in the north-east corner, was a
bronze sluice. The frame of this sluice, with an opening of 13in. by
12in., I found in position when I excavated my way up the drain, but
I was obliged to remove it in order to force my way into the bath. It
has not been replaced, but is preserved in the Pump Room, and weighs