d. To do it, set the triangle up on its
legs on a level place and when the plumb-line comes to rest, mark the
place. A lead-pencil mark will do, but as it is liable to become
obliterated by the dirt, a saw mark is more permanent.

Now you know what the grade of the bottom of your ditch will be.
Reproduce this on a level place by means of a board with a large enough
block under one end to give the right pitch; put the triangle on this
and when the plumb-line comes to a rest, mark the place on the cross
piece. Reverse the ends of the triangle to get a similar mark on the
other side of the centre or level mark. This makes a level by which a
fairly accurate grade can be made.

The tile pipes were laid upon a bed of gravel. This prevents the
clogging up of the loosely put together joints. To fit tiles place the
small end of one into the large end of the next, and so on. Over the end
of the last tile, which emptied into the brook, they wired a bit of
rather fine-meshed chicken wire.

Then the trench was filled in. By test Albert had found the soil of this
land acid. Lime was to be put on it. Now lime must be in a crumbling
state for this purpose. So after they had bought the lime they dumped it
in a heap on a corner of the plot. After it had become air slaked, or
reduced to a powder by the action of air upon it, it was spread over the
lot. This and considerable fertilizer was ploughed in. The boys then had
an ideal sort of planting soil for almost anything. The drain actually
worked.

Now some boy may ask, suppose a fellow has no tile and cannot afford to
buy any. In such a case there are two alternatives or choices. A wooden
trough may be made by nailing together boards six inches wide. Then make
a gravel bed and tip this trough over on it peak up. The wooden drain,
however, is likely to rot. The other way is to put a double row of
stones right through the centre of the bed slope. These
stones--perfectly flat ones--should be placed on end with a foot between
the rows. In this space put small stones.

The chief thing to remember in the drainage problem is that one wants a
gradual flow of water from inlet to outlet. Any boy can fix his wet,
soggy garden spot even though he has no tiles. Stones can be found
surely, and, if no gravel beds are near, all the little brothers and
sisters can pick small stones.

The boys had decided on planting what they called a general vegetable
garden--corn, pumpkins, beans (bush), melons,