you will see the dirty water flowing out at the man or hand hole. The
dirt is soft and washes very easily; but, if it had dried on the inside
of boiler while you were waiting for it to cool, you would find it very
difficult to wash off. .

You say I said to force the water through the boiler, and to do this you
must use a force pump. No engineer ought to attempt to run an engine
without a force pump. It is one of the necessities. You say, can't you
wash out a boiler without a force pump? Oh, yes! You can do it just
like some people do business. But I started out to tell you how to keep
your boiler clean, and the way to do it is to wash it out, and the way
to wash it out is with a good force pump. There are a number of good
pumps made, especially for threshing engines. They are fitted to the
tank for lifting water for filling, and are fitted with a discharge hose
and nozzle.

You will find at the bottom of boiler one or two hand hole plates-if
your boiler has a water bottom-if not, they will be found at the bottom
of sides of firebox. Take out these hand hole plates. You will also
find another plate near the top, on firebox end of boiler; take this
out, then open up smoke box door and you will find another hand hole
plate or plug near lower row of tubes; take this out, and you are ready
for your water works, and you want to use them vigorously; don't throw
in a few buckets of water, but continue to direct the nozzle to every
part of the boiler, and don't stop as long as there is any muddy water
flowing at the bottom hand holes. This is the way to clean your boiler,
and don't think that you can be a success as an engineer without this
process, and once a week is none too often. If you want satisfactory
results from your engine, you must keep a clean boiler, and to keep it
clean requires care and labor. If you neglect it you can expect