XU TABLE OF CONTENTS. 



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 -g-^^ 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- 

 mine—Stomachs of the Poly gastria— Increase of the 

 Vorticellse by self-division — The Arborescent, or Tree 

 Vorticellse — 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 — 

 Nei^ves 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. 



