Take him in a tight stable, as you did to ride him; take the harness and
go through the same process that you did with the saddle, until you get
him familiar with them, so that you can put them on him and rattle them
about without his caring for them. As soon as he will bear this, put on
the lines, caress him as you draw them over him, and drive him about in
the stable till he will bear them over his hips. The _lines_ are a great
aggravation to some colts, and often frighten them as much as if you were
to raise a whip over them. As soon as he is familiar with the harness and
line, take him out and put him by the side of a gentle horse, and go
through the same process that you did with the balking horse. Always use a
bridle without blinds when you are breaking a horse to harness.