TABLE OF CONTENTS. 
Protozoa or Simplest Animals 
PAGE 
. . 1-19 
Introduction 
1 
Gymnomyxa or Rhizopoda 
8 
Foraminifera or Reticularia 
7 
Oorticata or Infusoria 
14 
Poripera (Sponges) 
.. 20-37 
Introduction 
20 
Glassification 
23 
Calcarea (Calcareous sponges) 
25 
Silicea (Siliceous sponges) 
24 
Demospongiae or common sponges 
29 
Hydrozoa 
.. 38-66 
Introduction 
38 
Hydroida (Hydroid zoopliy tes) . . 
40 
Hydrocorallinae (Coral-like Hydrozoa) .. 
47 
Medusae (Jelly-fish) 
.. 
54 
Anthozoa (Sea- Anemones, Stony Corals, Bark Corals, etc.) 
.. 67-71 
