CONTENTS 



CHAP. PAGE 



I. Structm-al and Systematic .... 1 



II. Mode of Life 43 



III. The external features of Earthworms and their 



relation to habit and environment . . 59 



IV. Sense Organs and Senses of Earthworms . 64 



V. Relative frequency of Earthworms in different 



regions of tlie World .... 70 



VI. Peregrine forms 96 



VII. The Earthworms of Oceanic Islands . . 109 

 VIII. Movement and Migi-ation among Earthworms 113 



IX. The Geogi-aphical Distribution of Earthworms 129 



List of Literature referring to Earthworms . 144 



Index 146 



