his, that the parts of the subject are presented
_in detail_, and _in particular exemplification._ In the first case, the
whole subject was dispatched in a single, general, and comprehensive
description; in the latter, it is examined minutely, one point being
brought forward at a time. The discussions are enlivened, too, by
meeting and removing such little difficulties as will naturally come up
in such an investigation. Boys and girls will take an interest in such a
lecture; they will regret to have it come to a conclusion, and will
give their attention when the subject is again brought forward on the
following day. Let us suppose the time for continuing the exercise to
have arrived. The teacher resumes the discussion thus:

"I was talking to you yesterday about the motives of action. How many
had I made?"

Some say "Four," some "Five," some "Six."

"Can you name any of them?"

The boys attempt to recollect them, and they give the names in the order
in which they accidentally occur to the various individuals. Of course
the words Fear, Emulation, Honor, Friendship, and others, come in
confused and irregular sounds from every part of the school-room.

"You do not recollect the order," says the teacher, "and it is of no
consequence, for the order I named was only accidental. Now to go on
with my account: suppose all these boys to sit down and go to writing,
each one acting under the impulse of the motive which had been presented
to him individually. But, in order to make the supposition answer my
purpose, I must add two other cases. I will imagine that one of these
boys is called away a few minutes, and leaves his paper on his desk, and
that another boy, of an ill-natured and morose disposition, happening to
pass by and see his paper, thinks he will sit down and write upon it a
few lines, just to tease and vex the one who was called away. We will
also suppose that I call another boy to me, who I have reason to believe
is a sincere Christian, and say to him, 'Here is a new duty for you to
perform this afternoon. This piece of poetry is to be copied; now do it
carefully and faithfully. You know that this morning you committed
yourself to God's care during the day; now remember that he has been
watching you all the time thus far, and that he will be noticing you all
the time you are doing this; he will be pleased if you do your duty
faithfully.'

"The boys thus all go to writing. Now suppose a stranger should come
in,