TABLE OF CONTENTS. 



Page 



Introduction 1 



Making a Beginning 5 



The Dandelion 7 



The Mosquito 12 



Seeds 22 



How to Make a Collection of Insects 30 



Fungi 35 



Bearing Insects in the Schoolroom 45 



The Bee and the Lupine 51 



Some Water Insects 60 



Heat 79 



Currents in Air and Water 87 



Solution and Crystallization 95 



About Spiders * 103 



Plants without Flowers 120 



Flowering Plants . . . . 128 



Parasitic Plants 135 



Eggs of Frogs, Toads and Salamanders . . . 137 



Snails and Slugs . . 139 



Earthworms . 140 



Covering of Animals 141 



Marine Life 145 



Ants' Nests 147 



Gases 149 



Magnetism 158 



The Pendulum . ,161 



