CONTENTS 



PAGE 



(4) The tubular type of nervous system 71 



10. Sense Organs 7^ 



(1) Organs of smell and taste 74 



(2) Organs of hearing and equilibration 76 



Statocysts 



Arthropod Statocysts and Ears 78 



Lateral Line Organs of Vertebrates 79 



The vertebrate ear 



(3) Visual Organs 81 



Vesicular Eyes 



The paired eyes of Vertebrates 83 



The compound eyes of Arthropods 85 



Table of Classification and Morphology of Animals 



Vlll 



