I shall, in
such a case, just mention that an article is Tabu, and you will
understand that it is not only not to be _injured_, but not even
_touched_."
A little delicate management of this sort will often have more influence
over young persons than the most vehement scolding, or the most watchful
and jealous precautions. The Tabu was always most scrupulously regarded,
after this, whenever employed.
20. MENTAL ANALYSIS.--Scene, a class in Arithmetic at recitation. The
teacher gives them an example in addition, requesting them, when they
have performed it, to rise. Some finish it very soon, others are very
slow in accomplishing the work.
"I should like to ascertain," says the teacher, "how great is the
difference of rapidity with which different members of the class work in
addition. I will give you another example, and then notice by my watch
the shortest and longest time required to do it."
The result of the experiment was that some members of the class were two
or three times as long in doing it as others.
"Perhaps you think," said the teacher, "that this difference is
altogether owing to difference of skill; but it is not. It is mainly
owing to the different methods adopted by various individuals. I am
going to describe some of these, and, as I describe them, I wish you
would notice them carefully, and tell me which you practice."
There are, then, three modes of adding up a column of figures, which I
shall describe.
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