The formation of vegetable mould, through the action of worms, with observations on their habits

Introduction 1. Habits of worms 2. Habits of worms-continued 3. The amount of fine earth brought up by worms to the surface 4. The part which worms have played in the burial of ancient buildings 5. The action of worms in the denudation of the land 6. The denudation of the land-continued 7. Conclusion Index.