THE FORMATION 



OF 



VEGETABLE MOULD 



THROUGH THE 



ACTION OF WOEMS 



WITH 



OBSERVATIONS ON THEIR HABITS. 



By CHABLES DAEWIN, LL.D., F.E.S. 



WITH ILLUSTRATIONS. 



SIXTH THOUSAND {CORRECTED). 



LONDON: 

 JOHN MUBBAY, ALBEMABLE STBEET\ 



1882. 



The right of Translation is reserved. 



