Vlll CONTENTS 



CHAPTER YI 



Respikatiox and Circulation — The Mantle 150 



CHAPTER VII 



Organs of Sense: Touch, Sight, Smell, Hearing — The Foot — The 



Nervous System 177 



CHAPTER VIII 

 The DiGf:sTiVE Organs, Jaav, and Radula : Excretory Organs . . 209 



CHAPTER IX 



The Shell, its Form, Composition and Growth — Designation of its 



Various Parts 244 



CHAPTER X 



Geographical Distribution of Land and Fresh-water Mollusca — The 



Palaearctic, Oriental, and Australasian Regions . . . 277 



CHAPTER XI 



Geographical Distribution of Land Mollusca [continued) — The Ethi- 

 opian, Xearctic, and Neotropical Regions 328 



CHAPTER XII 



Distribution of Marine Mollusca — Deep-sea Mollusca and their 



Characteristics 360 



CHAPTER XIII 

 Class Cephalopoda 378 



