+The Paragraph+.--If we write about only one thing, or one point, our
sentences will be closely related to each other. If we write on two or more
points, there will be two or more sets of sentences--the sentences of each
set closely related to one another, but the sets themselves not so closely
related. A group of sentences expressing what we have to say on a single
point, or division, of our subject is called a +paragraph+. How many
paragraphs do you find in the selection above? How are they separated on
the page?

Let us examine this selection more carefully to find whether the sentences
of each group are all on a single point and closely related, and whether
the groups themselves are related. Do the sentences of the first paragraph
all help to tell of a certain habit of angleworms? Do the sentences of the
second paragraph tell what results from this habit? Do the sentences of the
third paragraph tell what is thought to be the cause of this habit? If you
can say yes to these questions, the sentences in each paragraph must be
closely related. Are a habit, a result of it, and a cause of it related in
thought, or meaning? If so, the paragraphs are related.

You must now see that paragraphing helps both the reader and the writer,
and that we should master it.

+The Style+.--We shall not here say much about what we may call the style
of the author--his way of putting his thought, or manner of expressing it.
But this you will notice: his words are few, plain, and simple; the
arrangement of them is easy; and so what is said is said clearly. You are
nowhere in doubt about his meaning unless it be in the second paragraph. It
may puzzle you to see what _their_, _they_, and _they_ in the second
sentence of this paragraph stand for. Let _an astonishing number of worms_