Index. 



Page 



Air, Composition of '.149 



'' Expanded by Heat 83 



" Pressure of 171 



Animals, Covering of 141 



Ants' Nests ... 147 



Aquaria, for Sclioolroora 4d 



Baclt Swimmer 72 



Balloon, Hot Air 89 



Ballooniutf of Spiders 118 



Bee and tlie Lupme 61 



Bee, Cross Fertilization of Lupines, 54 



" Leg of 57-58 



Bird Fauna of a Locality 181 



'■ Sliins, How Obtained 178 



Birds 177 



Biris, Billot 17T 



Colors of isi) 



" Feet of 17? 



" Migratory 181 



*' Nesting of 180 



Notes of Habits of 181 



Residents 181 



" Song of 181 



Black Flies 66 



Boiling 90 



Boletus 4fl 



Breathing of Ir sects 174 



Breeding Cages for Insects 46 



Brools Insects 60 



Caddice Flies 65 



Candle Flame 151 



Capillary Attraction 100 



Carbonic Acid 128, 1.52 



" Test for 1.52 



Caterpillars 45-46 



" Preserving Xi 



Caulicle 26 



Chlorophyll ISO 



Chrysalids 45 



Clams 146 



Clay 99 



Clouds, How Composed 92 



Cocoons 45-^6 



Collecting Net for Insects 30 



Collection of Insects, How to Make, 30 



Condensation 93 



Conifers, Fertilization of 58 



Cotyledons 26 



Covering of Animals 141 



Crabs .... 146 



Crri.ss Fertilization 54 



Crystallization, Solution and .95 

 Crystals, How to Obtain. ... 96 



Cultivation of Soil, Reason for , . , 100 



Currents In Air and Water 87 



Currents in Water 90 



Damsel Flies 78 



Dandelion 7 



Dandelion, Seed Forming 7 



Diatoms 127 



Diffusion of Gases 1.53 



Dodder 135 



Dragon Flies 74 



" " Feeding Habits of . . . 76 



" " Transformations of . . 76 



Duck, Bill and Feet of 179 



Earthworms 140 



Eggs of Frogs, Toads and Salaman- 

 ders 137 



Embryo, of Plant 36 



Escbsclioltzia 51 



Expansion of Air by Heat 83 



" " Solids by Heat .... 85 



" " Water by Heat .... 81 



Feathers 141 



Ferns KO 



Fertilization of Flower 53 



Flame of Candle 154 



Flower, Parts of a 52 



Flowering Plants 128 



Fogs, How Composed 92 



Food of Plants 128 



Frogs, Eggs of 127 



Frost 101 



Fruits 130 



" Ripening of 131 



FruitTrees.Fertilizationof Flowers, 58 



Fungi 35 



Fungi; Feeding Habits of 43 



Fungus, Life History of 39 



Gas Making 1.54 



Gases 149 



Gases, Diffusion of 153 



Geaster 41 



Giant Water Bug 74 



Gills of Water Insects 60 



Graphite 164 



Grasshopper, Breathing of 174 



Gravel 99 



Hawks, Feet and Beak of 179 



Heat 79 



Heat Expands Air 83 



Solids 85 



" Water 81 



