CHAPTER II. 



JANUARY. 



VISIT TO THE PONDS— CONFKRY.E—SPIROGYRA QUININA— 

 VORTICELLA-COMMON ROTIFER-THREE DIVISIONS OF IN- 

 FUSORIA— PHYTOZOA — PROTOZOA— ROTIF ERA— TARDIGRADA 

 —MEANING OF THESK TERMS— EUGLENiE— DISTINCTION BE- 

 TWEEN ANIMALS AND VEGETABLES- DESCRIPTION OF 

 VORTICELL.E— DARK GROUND ILLUMINATION— MODES OF 

 PRODUCING IT— THE NUCLEUS OF THE VORTICELL^— 

 METHODS OF REPRODUCTION- CI LI ATEI> PROTOZOA— WHEEL 

 BEARERS OR ROTIFERS— THEIR STRUCTURE— THE COMMON 

 ROTIFER— THE YOUNG ROTIFER SEEN INSIDE THE OLD ONE— 

 AN INTERNAL NURSERY-*-DIFFERENTIATION" AND "SPECIAL- 

 IZATION"— BISEXUALITY OF ROTIFERS-THEIR ZOOLOGICAL 

 POSITION— DIVERSITIES IN THEIR APPEARANCE— STRUCTURE 

 OF THEIR GIZZARD— DESCRIPTION OF ROTIFERS. 



