Xll TABLE OF CONTENTS. 



Page 



VI. The INFUSORIA, or FRESH-WATER ANIMALCULES . . 28 

 Ehrenberg's discoveries Animals in Vegetable Infusions 

 The Cilia, or vibratile organs. 



VII. The POLYGASTRIA 32 



Animals only ^^ of a line in diameter Mechanism of 

 the Cilia Cilia of the Rotifer. 



VIII. The MONADS 36 



Monads the minutest animals revealed by the Microscope 

 Masses of slime composed of countless myriads of 

 Monads The Monas crepusculum The Chlamido- 

 monas Increase by self-division The Gonium its 

 mode of increase The Volvox globator Monad of 

 the Volvox Globe within globe The Vibrio, or 

 Trembler. 



IX. The VORTICELLINA, or Bell-shaped Animalcules . . 42 



Animals grouped together like plants The Stentors The 

 Bell-shaped Animalcules Animalcules fed with car- 

 mineStomachs of the Polygastria Increase of the 

 Vorticellse by self -division The Arborescent, or Tree 

 Vorticellae Physiological summary. 



X. The ROTIFERA, or Rotating Animalcules . . . .52 

 Structure of the Rotifera The rotators, or wheels The 

 jaws and teeth of the Rotifera Respiratory Organs 

 Nerves and eyes. 



XI. The FLOSCULARIA, or FLOWER-SHAPED ANIMALCULES . 58 

 The Limnias, or Water Nymph The Melicerta, or Honey 

 Floscularia Sheath of the young coloured by car- 

 mine The Elegant Floscularia The Horned Flos- 

 cularia. 



