TABLE OF CONTENTS 



PREFACE 5 



EQUIPMENT : 7 



DIRECTIONS FOR LABORATORY WORK 8 



AQUATIC COLLECTING TRIP t 10 



DIRECTIONS FOR USING KEY _ 13 



KEY TO THE PHYLA, ETC 14 



DRAGON AND DAMSEL FLY NYMPHS 24 



POND SNAIL > 26 



A STUDY OF THE INTERRELATIONS BETWEEN BIRDS AND 



FOREST VEGETATION 28 



USE OF THE MICROSCOPE 33 



AMOEBA 37 



PARAMECIUM 40 



VORTICELLA 43 



EUGLENA _ 44 



COLONIAL PROTOZOA 45 



VOLVOX _ 45 



MITOSIS - 48 



EMBRYOLOGY OF CEREBRATULUS 50 



HYDRA _ _ 53 



OBELIA 56 



GONIONEMUS 58 



REGENERATION IN PLANARIA..... 60 



EARTHWORM 61 



CRAWFISH 69 



STARFISH 79 



FRESHWATER MUSSEL 84 



GLOSSARY . 88 



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