The first bell would notify the teacher or teachers, if there are more than one in the school, that the time for their respective recitations is drawing to a close.

At the second bell the new classes should take their places without waiting to be called for.

The scholars will thus see that the arrangements of the school are based upon system, to which the teacher himself conforms, and not subjected to his own varying will.

They will thus not only go on more regularly, but they will themselves yield more easily and pleasantly to the necessary arrangements.
The fact is, children love system and regularity.

Each one is sometimes a little uneasy under the restraint which it imposes upon him individually, but they all love to see its operation upon others, and they are generally very willing to submit to its laws, if the rest of the community are required to submit too.