Life in the Soil, 17 microscope slides

4570 Our Environment Part III. Life in the Soil. - 17 Microscope Slides - 1. Acidophile soil bacteria, solution of heavy metals 2. Nitrite bacteria, forming harmful nitrogenous substances 3. Root of beech with ectotrophic mycorrhiza, t.s. 4. Root of birch with partly endotrophic mycorrhiza, t.s. 5. Root of lupin with symbiotic nitrogen fixing bacteria 6. Netted venation, portion of rotted deciduous leaf 7. Charlock (Sinapis), t.s. of stem. Green manure plant 8. Soil bacteria (Bacillus megaterium), smear 9. Hyphae of root fungi, t.s. 10. Lichen, indicator of clean air 11. Mushroom (Xerocomus), mycelium 12. Root of willow (Salix), planting protecting against erosion 13. Earthworm (Lumbricus) t.s., causing soil improvement 14. Springtails (Collembola), w.m. 15. Mite from forest soil, w.m. 16. Constituents of humus soil 17. Constituents of peaty soil