CONTENTS. V11 



CHAPTER VII. 



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 Ie 

 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 315-326 



