1. Diatoms, many different forms of shells
2. Euglena, green flagellate
3. Paramecium, ciliates from hay-infusion
4. Daphnia, water flea
5. Cyclops, a copepod
6. Desmids, mixed
7. Mixed plankton from fresh water
8. Hydra, body
9. Planaria, body of a flatworm
10. Bacteria in putrid water, forming chains.