The wood bottom is 3 ft. 1½ in. by 1 ft. 5½ in. by 3/8 in.; it is planed both sides, and secured in place with screws. The top side is treated round the margin, as shown in [Fig. 115], and the under side as shown in [Fig. 117]. The centre of the design of the under side, covering a space of 2 ft. 3 in. by 8 in., is worked first; it is worked from the centre outwards, each strip being mitred as shown. The marginal strips are pieces of split cut slanting at the ends where they fit other pieces, and flush with the edge of the wood bottom, which is surrounded with the same stuff.
Fig. 116.—Cross Section of Aviary.
Fig. 117.—Half Under View of Bottom of Aviary.
