CONTENTS. 
Introduction 
—♦— 
CHAPTER I. 
CHAPTER II. 
Discovery of the Principles of the Aquarium, 
Rest Mode of Constructing One 
CHAPTER III. 
Planting the River Garden in the Aquarium . 
CHAPTER IY. 
Concerning the Characteristics of the Plants 
for the Aquarium ..... 
CHAPTER Y. 
The Mollusca and the Fish .... 
CHAPTER YI. 
PAGE 
1 
AND THE 
. 9 
. 19 
SELECTED 
. 30 
. 46 
Sticklebacks and their Hest-building 
. 66 
