CONTENTS 



PAGE 



Introduction 7 



Laboratory Equipment 12 



Reference Books 14 



Directions for Collecting Insects iS 



Arthropods 20-105 



The Grasshopper .20 



The Cricket 34 



The Meadow Locust . ... 35 



The Mantis 35 



The Butterfly 40 



The Moth . 42 



The Squash Bug . . 49 



The Beetle . . . ... .... 54 



The Honey Bee . . 65 



The House Fly . . 73 



The Dragon Fly 79 



The Spider . . 88 



The Centipede . . . 92 



The Crayfish ... 93 



Protozoans • • 107-111 



Sponges '■ 112-116 



5 



