xiv TABLE OF CONTENTS. 
CHAPTER VIII. 
SoME INSECT ADAPTATIONS.........000-eeeeee Jc biaRrwcesee SO 
CHAPTER IX. 
A SPIDER’s ACTIVITIES,.....0+e+cceees PiAGRORe Hee ekeeawae es OB 
CHAPTER X. 
HOMOLOGIES AMONG CRUSTACEA....... wee vccncccccsccccesess IOL 
CHAPTER XI. 
THE ACTIVITIES OF ONE-CELLED ANIMALS AND SPONGES....... 116 
CHAPTER XII. 
THE HypRA AND SOME C@HLENTERATES WHICH LIVE IN COLONIES 128 
CHAPTER XIII. 
THE STARFISH AND CLOSELY RELATED ANIMALS..... sesecccee 140 
CHAPTER XIV. 
THE EARTHWORM AND His Work..... CRE SwReeN eS esese. 148 
CHAPTER XV. 
MUSSELS AND SNAILS,........06- settee cee cece ces eesceeerees 155 
CHAPTER XVI. 
THE STRUCTURE AND ACTIVITIES OF A FISH..............0... 169 
CHAPTER XVII. 
‘TADPOLES “AND! FROGS baiiere pee e gy sain emaelauetime RORY ae sare uasien 179 
