XXIV THE METAMORPHOSIS 104 XXV SPIDERS 108 XXVI THE EPEIRA’S BRIDGE 112 XXVII THE SPIDER’S WEB 116 XXVIII THE CHASE 120 XXIX VENOMOUS INSECTS 126 XXX VENOM 132 XXXI THE VIPER AND THE SCORPION 136 XXXII THE NETTLE 140 XXXIII PROCESSIONARY CATERPILLARS 144 XXXIV THE STORM 150 XXXV ELECTRICITY 155 XXXVI THE EXPERIMENT WITH THE CAT 160 XXXVII THE EXPERIMENT WITH PAPER 163 XXXVIII FRANKLIN AND DE ROMAS 165 XXXIX THUNDER AND THE LIGHTNING-ROD 172 XL EFFECTS OF THE THUNDERBOLT 179 XLI CLOUDS 181 XLII THE VELOCITY OF SOUND 187 XLIII THE EXPERIMENT WITH THE BOTTLE OF COLD WATER 192 XLIV RAIN 197 XLV VOLCANOES 201 XLVI CATANIA 205 XLVII THE STORY OF PLINY 210 XLVIII THE BOILING POT 216 XLIX THE LOCOMOTIVE 221 L EMILE’S OBSERVATION 227 LI A JOURNEY TO THE END OF THE WORLD 232 LII THE EARTH 238 LIII THE ATMOSPHERE 244 LIV THE SUN 250 LV DAY AND NIGHT 257 LVI THE YEAR AND ITS SEASONS 264 LVII BELLADONNA BERRIES 271 LVIII POISONOUS PLANTS 275 LIX THE BLOSSOM 284 LX FRUIT 290 LXI POLLEN 295 LXII THE BUMBLE-BEE 301 LXIII MUSHROOMS 307 LXIV IN THE WOODS 313 LXV THE ORANGE-AGARIC 317 LXVI EARTHQUAKES 322