Tom and Linda have been moving furniture, exhausting themselves to some extent. Next time, they agreed, they'll make use if wheels and axles. This is much better than the ""roller"" idea of centuries gone by. Twice Tom and Linda think of a little girl trying to move a hippopotamus. Pulleys are introduced in the last of these hippo stories.
| Name | Type | Role | |
|---|---|---|---|
| Esta de Fossard | Writer |