Page:The Formation of Vegetable Mould through the Action of Worms (1881).djvu/10

iv CHAPTER II.

HABITS OF WORMS.—continued.

CHAPTER III.

THE AMOUNT OF FINE EARTH BROUGHT UP BY WORMS TO THE SURFACE.

Rate at which various objects strewed on the surface of grass-fields are covered up by the castings of worms—The burial of a paved path—The slow subsidence of great stones left on the surface—The number of worms which live within a given space—The