Translations:Benutzer:Arian/Klett-Mini-Test/399/en

In the profile-structure of this diaphragm organ of the middle — the soil — the threefold verticality of the farm individuality repeats itself in miniature. We find in the topsoil, the so-called A-horizon, a darker, airily structured, humus-bearing layer permeated with plant residues — a precipitate of the metabolic activity above the soil, which breathes into it through bacterial and other transformations a kind of life of its own. Polar to this enlivened layer, we find in the subsoil the exposed, unweathered, dead rock — the head pole reaching up into the soil from below, the C-horizon. At its boundary the rock exposes itself to the