CONTENTS. vii 



CHAPTER TIT. 



CONCLUSION. 



Summary of the part which worms havo played in the 

 history of the world — Their aid in the disintegra- 

 tion of rocks — In the denudation of the land— In 

 the preservation of ancient remains — In the pre- 

 paration of the soil for the growth of plants — 

 Mental powers of worms — Conclusion . 305-313 



Index 31&-326 



