eep the plates slightly raised, at the same time allowing a
clearer flow of the water from the bottom upwards to the
discharge.

The water enters the narrow partition at the end, flows under the
partitions B and A, then upward between and parallel to the
surface of the plates, escaping at the opposite end over the top
of the tank end, in which the upper part has been cut away for
that purpose. The depth of this cut, in the upper part of the tank
end, should allow the overflow to be a trifle higher than the
width of the largest size plate for which the tank is fitted.
Partition B being stationary, can be nailed in position
permanently, allowing the bottom edge to clear the bottom of the
tank the desired distance. Partition A being movable should have
attached to its bottom edge a couple of nails, D, or better still,
wooden pegs, which will keep it also above the bottom of the tank
at the desired height.

A coat of paraffin paint should be applied, and, just before it
sets perfectly hard, any rough spots trimmed down with a knife or
chisel and a second lighter coat applied. If the wood is very dry
and porous a preliminary coat of the paint should be applied and
allowed to soak into the pores. It is also well to apply a coat of
the paint to the joints at the corners and around the edge of the
bottom before nailing together.

** Turn-Down Shelf for a Small Space [144]

The average amateur photographer does not have very much space in
which to do his work. The kitchen is the room used ordinarily for
finishing the photographs. In many instances there will not be
space enough for any extra tables, and so a temporary place is
prepared from boxes or a chair on which to place the trays and
chemicals. Should there be space enough on one of the walls a
shelf can be made to hang down out of the way when not in use. A
shelf constructed on this order may be of any length to suit the
space or of such a length for the purpose intended. A heavy piece
of wood, about

[Illustration: Turn Down Shelf]

1-1/2 in. thick, and 4 to 6 in. wide, is first fastened to the
wall at the proper height with nails, or, much better, large
screws.

The shelf is cut and planed smooth from a board 12-in. wide and
about 1-in. thick. This board is fastened to the piece on the wall
with two hinges as shown in Fig. 1. A small cleat is nailed to the
outer and under edge of the board and in the middle as shown. This
is used to place a support under