1. On the whole, school athletics are a good thing.

1. On the whole, school athletics are a good thing.

2. Vivisection is necessary to science.

3. Vivisection is cruel and unnecessary.

4. None but scientists are competent to decide whether or not vivisection is necessary to science.

5. If necessary to science, vivisection should be practised only when necessary.

6. A debating society is a help in education.

7. The American Revolution is an uninteresting theme topic.

8. The American Revolution is not an uninteresting theme topic.

[Other sentences can easily be suggested by students or teacher.]

=Theme.=—Develop one of the following topic sentences into a paragraph of _contrast_,—200 words.

1. There is a difference between knowing a thing, and being able to tell it.

2. Outside the wild winds were rioting; within all was cheer.