f a Composition by Stating Cause and Effect.+--The
statement of the causes of an event or condition may be used as a fifth
method of development. The principle, however, is not different from that
applied to the development of a paragraph by stating cause and effect
(Section 49). If several causes contribute to the same effect, each may be
given a separate paragraph, or several minor ones may be combined in one
paragraph. For the sake of unity we must include each fact, principle, or
statement in the paragraph to which it really belongs. The coherent order
is usually that which proceeds from causes to effects rather than that
which traces events backward from effects to causes.

+Theme L.+--_Write a theme of three or more paragraphs, stating causes and
effects._

Suggested subjects:--
1. Why hospitals are necessary.
2. Why cigarette smoking is dangerous.
3. Why girls should take music lessons.
4. The effect of climate upon health.
5. The effect of rainfall upon the productivity and industries of a
country.
6. The effect of mountains, lakes, or rivers upon exploration and
travel.
7. What connection is there between occupation and height above the
sea level, and why?
8. Why our city is located where it is.
9. Why I came late to school.

+93. Combination of Methods of Development.+--Frequently the presentation
of our thought is made most effective by using some combination of the
methods of development discussed in this chapter. Time and place are often
interwoven, comparisons and contrasts flash into mind, general statements
need specific illustration, or results demand immediate explanation--all
in the same theme. Sometimes the order of coherence will be in doubt, for
cause and effect demand a different order of statement from that which
would be given were we to follow either time-order or position in space.
In such cases we must choose whether it is most important to tell first
_why_ or _when_ or _where_. The only rule that can be suggested is to do
that which will make our meaning most clear, because it is for the sake of
the clear presentation of our thought that we seek unity, coherence, and
emphasis.

+Theme LI.+--_Write a theme of several paragraphs. Use any method of
development or any combination of methods._

(Choose your own subject. After the theme is written make a list of all
the questions you should ask yourself about it. Correct th