Translations:Benutzer:Arian/Klett-Mini-Test/395/en

When we try to think the indications of spiritual science into connection with the scientifically graspable facts of the mineral subsoil, a further phenomenon points to the fact that the head pole of the "farm individuality" is to be found beneath the earth. Just as in the pineal gland the formation and dissolution of crystals arises as the physical basis of I-consciousness, so in the weathering zone of the soil the finest hexagonal crystal-platelets form themselves. They crystallize out of the amorphous colloids of aluminium hydroxide and silica into what are called "secondary clay minerals." Yet these can also dissolve themselves again into the colloidal state.