TABLE OF CONTENTS. Xlll 



Page 



XII. The STEPHANOCEROS, or Crowned Wheel -animalcule . . 63 

 The appearance of the Stephanoceros its ciliated tentacula 

 its transparent, flexible, tubular case The Stephano- 

 ceros Ehrenbergi development of the young in the 

 Stephanoceros Embryo in the egg Liberation of the 

 young from the Egg, and from the sheath of the parent 

 Various stages of growth. 



XIII. The ROTIFER, or Wheel -animalcule 71 



The Rotifer vulgaris its internal structure the Wheels, or 

 rotatory organs the Eggs rate of increase its dis- 

 tribution its resuscitation. 



XIV. ANIMALCULES with durable cases, or shells . . . .79 



The Brachionus, or Spine -bearing Animalcule The Pitcher- 

 shaped Brachionus its jaws and teeth Baker's Bra- 

 chionus Strata composed of cases of Infusoria. 



XV. REFLECTIONS 82 



XVI. GENERAL REMARKS Conclusion . . . . '85 

 The Infusoria Influence of Temperature Animalcules in 

 vegetable infusions The ova and germs of Animal- 

 cules every where Animal structures almost fluid 

 The Medusae The Power of Vitality Final purposes 

 Animalcular origin of many Epidemic diseases 

 The moral Influence of natural knowledge. 



APPENDIX 95 



MISCELLANEOUS NOTES 109 



DESCRIPTION OF THE PLATES 113 



INDEX. . .139 



