﻿CONTENTS. 



CHAPTER I. 



PAGB 



Fresh-water Shells . . . . . . .1 



Where to collect, 1 ; Empty or Dead Shells, 2 ; Parts of a Shell named, 3 ; Forms of 

 Spire, DextraL, and Sinistral Shells, 4; Lines of Growth, Growth of a Shell, 5, 6. 



CHAPTER II. 



Fresh-water Snails ....... 



Where and how to collect, 7, 8 ; Live Shells, 8 ; Head, Tentacles, Foot, how they 

 breathe, 9, 10 ; Operculum, 12 ; Gills, 13. 



CHAPTER III. 



Land Snails . . . . . . . .14 



Where to collect, 14; Parts of the Animal, 15, 16; Tentacles, Jaw, 17; Explanation 

 about an Object being enlarged, 18; Slug, 19; Eggs and Young, 20; Mantle, 21. 



CHAPTER IV. 



Sea Snails . . . . . . . . .21 



Where to collect, 22 ; Entire Aperture, Aperture Notched or Canaliculated, 23 ; Si- 

 phon, and its Uses, 24 ; Flesh and Animal Feeders, 25 ; Egg-cases or Capsules, 

 26, 27. 



CHAPTER V. 



Fresh-water Mussels . . . . . . .27 



Where found, 27 ; Ligament, Lines of Growth, 28; Regions of Mussel, 29; How 

 they crawl, 30 ; Excurrent and Incurrent Orifices, 31 ; Siphons, Mantle. 82 ; How 

 Pearls are formed. 33 ; Internal Markings of Shell, Hinge, 34 ; How the Shells 

 open and Ligament acts, 36. 



