TABLE OF CONTENTS 



Preface 5 



Equipment 7 



Directions for Laboratory Work 8 



Use of the Microscope 11 



Aquatic Collecting Trip 16 



Directions for Using Key 18 



Key to the Phyla, Etc. 19 



Dragonfly and Damselfly Nymphs 29 



Pond Snail 8] 



A Study of the Interrelations Between Birds and 



Forest Vegetation 33 



Amoeba 38 



Paramecium 41 



vorticella 45 



Euglena 46 



Colonial Protozoa 48 



VoLvox 48 



Mitosis 52 



Embryology of Cerebratulus 55 



Hydra 58 



Obelia 62 



Gonionemus 64 



Regeneration in Planaria 66 



Earthworm 68 



Crayfish 76 



Starfish 87 



Freshwater Mussel 92 



Glossary 96 



42003 



