iv CONTENTS. 



CHAPTER II. 



HABITS OF WORMS continued. 



Manner in which worms seize objects Their power of 

 suction The instinct of plugging up the mouths of 

 their burrows Stones piled over the burrows 

 The advantages thus gained Intelligence shown by 

 worms in their manner of plugging up their burrows 

 Various kinds of leaves and other objects thus 

 used Triangles of paper Summary of reasons for 

 believing that worms exhibit some intelligence 

 Means by which they excavate their burrows, by 

 pushing away the earth and swallowing it Earth 

 also swallowed for the nutritious matter which it 

 contains Depth to which "worms burrow, and the 

 construction of their burrows Burrows lined with 

 castings, and in the upper part with leaves The 

 lowest part paved with little stones or seeds 

 Manner in which the castings are ejected The 

 collapse of old burrows Distribution of worms 

 Tower-like castings in Bengal Gigantic castings 

 on the Kilgiri Mountains Castings ejected in all 

 countries Pages 57-130 



CHAPTER III. 



TIIK 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 



