If but few tunes are sung, a very large proportion of the scholars will soon learn them.
3.

Let there be no other regular exercise until the close of the afternoon school.

When that hour has arrived, let the teacher devote a very short period, five minutes perhaps, to religious _instruction_, given in various ways.

At one time he may explain and illustrate some important truth.

At another, read and comment upon a very short portion of Scripture.