28. Are urchins and sea-cucumbers ever eaten?
29. Describe an urchin shell when the quills are gone.
VIII. THE DRAGON-FLY.
1. What insects have we called flying flowers?
2. What are some of the names given to dragon-flies?
3. Can a dragon-fly do you any harm?
4. What cousins has the dragon-fly?
5. Describe a dragon-fly.
6. What kind of places and weather do dragon-flies like?
7. What do they eat?