1. Diatoms, many different forms of shells 2. Euglena, green flagellate3. Paramecium, ciliates from hay-infusion4. Daphnia, water flea5. Cyclops, a copepod6. Desmids, mixed7. Mixed plankton from fresh water8. Hydra, body9. Planaria, body of a flatworm10. Bacteria in putrid water, forming chains11. Spyrogyra, Spirogyra12. Zygnema, w.m.13. Stigeoclonium, w.m.14. Obelia, w.m.15. Volvox, w.m.