The Formation of Vegetable Mould Through the Action of WormsNote 148 — Chapter III · THE AMOUNT OF FINE EARTH BROUGHT UP BY WORMS TO THE SURFACE.Reading edition‘Zeitschrift für wissensch. Zoolog.’ Bd. xxviii., 1877, p. 360.◇Copy noteReturn to CHAPTER III. THE AMOUNT OF FINE EARTH BROUGHT UP BY WORMS TO THE SURFACE.