6,2 



CONTENTS. 



FAfll 



INTRODUCTION ix 



CHAPTER I. 

 THE MICROSCOPE AKD ITS PAKTS 1 



CHAPTER II. 

 COMMON AQUATIC PLANTS USEFUL TO THE MICROSCOPIST 47 



CHAPTER III. 

 DESMIDS, DIATOMS, AND FRESH- AY ATER ALGJE 64 



CHAPTER IV. 

 RHIZOPODS Ill 



CHAPTER V. 

 INFUSORIA. . . 



CHAPTER VI. 

 HYDRAS.. . . . 155 



CHAPTER VII. 



SOME AQUATIC WORMS, CH^TONOTUS, AND CHIRONOMUS 

 LARVA... .. 163 



