on directions for making a metal bird-cage.



273



line ab, and again along the line cd, thus forming the top and two

sides of cage, the top being 13 in. wide.


The bottom is made of a piece of thin galvanised iron (weight

about 7| lb. per sq. yd.), cut as shown in Fig. 6. On this three

lines are drawn, kl, Im, mn, and holes are punched along two sides

and the back end, k in. from the edge, as shown. Through these

holes are thrust the projecting ends i, i, i of the wires in Figs. 1 and



%



Ft<] 11 F <<j iz


[From drawing by Wallace Craig.]



Fig. /3



F.<g m



2. The result is that the top and sides stand on the bottom as shown

in end-view in Fig. 7. A view of the wire as thrust through the

galvanised iron is shown on a larger scale in Fig. 8. The end of each

wire is now bent back and clinched as shown in Fig. 9, and thus the

side is securely fastened to the bottom. Now, as shown in Fig. 7,

two straight beams of wood are laid longitudinally and fastened by

clamps at each end, the edges of the beams following the line mn.

With a mallet, and a stick cut in the form of a chisel, the edge of the

bottom is bent up. The same is repeated on the other side along the



