Includes:
1. Soil bacteria
2. Hyphae of root fungi transversal section.
3. Fruiting body of mushroom (Psalliota).
4. Horsetail Equisetum spores with elateres.
5. Moss leaf, surface view whole mount.
6. Needle of pine (Pinus) transversal section.
7. Venatio of a deciduous leaf.
8. Decomposing leaf, formation of humus.
9. Mite from forest soil, whole mount.
10. Earthworm (Lumbricus) transversal section of midbody.