If You Dig a Hole
in your yard and fill it with water, it will be a mud-hole, in which no self-respecting fish will live: besides which the soil will soon soak up the water and leave the mud to bake in the hot summer sun.
By Sinking a Wooden Tank
in the ground and filling it with water a pond may be made. But any old box will not answer, for, unless you are a much better mechanic than the writer was at your age, you will not be able to prevent an ordinary box from leaking.
However, if you really want a back-yard fish-pond, you may make a box or tank which will hold water, and the
The Back-yard Fish Pond.