CONTENTS. 
CHAPTER I. 
PAGE 
LIFE AND HER CHILDREN i 
CHAPTER II. 
LIFE'S SIMPLEST CHILDREN, HOW THEY LIVE, AND MOVE, 
AND BUILD ........ 14 
CHAPTER III. 
How SPONGES LIVE ........ 33 
CHAPTER IV. 
THE LASSO-THROWERS OF THE PONDS AND OCEANS . . 50 
CHAPTER V. 
How STAR-FISH WALK AND SEA-URCHINS GROW . . 77 
CHAPTER VI. 
THE MANTLE-COVERED ANIMALS, AND HOW THEY LIVE 
WITH HEADS AND WITHOUT THEM .... 103 
CHAPTER VII. 
THE OUTCASTS OF ANIMAL LIFE, AND THE ELASTIC-RINGED 
ANIMALS BY SEA AND BY LAND . .- . 135 
