CONTENTS 
INSTINCT AND INTELLIGENCE IN HIGHER INVERTEBRATES 
(INVERTEBRATA) 
INSTINCT AND INTELLIGENCE IN INSECTS (INSECTA)—Mason-Bee (Chalicodoma 
muraria), Nesting Instincts and Homing Faculty; Nesting Instincts of Solitary 
Wasps; Egg-laying Instincts of Butterflies and Moths - - - - - 
INSTINCT AND INTELLIGENCE IN MOoLLuscs (MOLLUSCA)—Intelligence of 
Octopus; Homing Instinct of Limpet (Paze//a) and Garden Snail (Helix aspersa) 
INSTINCT AND INTELLIGENCE IN VERTEBRATES 
(VERTEBRATA) 
WARNING COLORATION—Intelligence of Young Chicks - - - - - - 
NEsT-BUILDING IN BIRDS—Eider-Duck, House-Swallow, House-Martin, Palm 
Swift - - - - 
MIGRATION OF BIRDS—Golden Plover, White Stork, Cuckoo - - - - 
ASSOCIATION OF ORGANISMS—THE WEB OF LIFE 
CHAPTER LX.—ASSOCIATION OF ORGANISMS—GENERAL 
PRINCIPLES—ANIMALS AND PLANTS 
GENERAL PRINCIPLES—Modern Tendency to Over-Specialization; Nature Study; 
Complex Character of Relations between different Organisms - - 
PLANTS AND ANIMALS 
Classification of Plants: Leaf-Green (Chlorophyll - - - - 
PLANTS AND ANIMALS IN RELATION TO AIR—Breathing; Feeding of Green 
Plants; Bacteria; Mutualism (Symdzoszs) of certain Plants - 
RELATIONS BETWEEN THE NUTRITION OF PLANTS AND ANIMALS—Plants as 
the Food of Animals; Plant-Food derived from Animals. Carnivorous Plants, 
—Butterwort (Pinguzcula); Sundews (Droserace@)—Sundew (Drosera), Venus’ 
Fly-Trap (Dzonea); Pitcher-Plants—Nepenthes, Sarracenia; Aquatic Car- 
nivorous Plants—Water Fly-Trap (Addrovandia), Bladder-Worts (Utricularia) 
MESSMATES OR COMMENSALS (COMMENSALISM)—Epiphytic Orchids; a Liver- 
Wort (Frullania dilatata) associated with a Wheel-Animalcule (Calidina 
symbiotica); Sea-Weed and Associated Animals; Ant-Plants; Sloths and Algze 
MUTUALISTS (SYMBIOSIS)—Lichens; Bacteria of Stomach (Sarcima ventricult); 
Ray-Animalcules (Radiolaria) and Yellow Cells; Sea-Anemones and Algzee- 
PARASITES (PARASITISM)—Clover-Dodder (Cuscuéa), Potato-Fungus (Phytophthora); 
Fly-Mould (Zmpusa), Silkworm-Mould (Cordceds), Bacteria of Disease; 
Turnip-Disease produced by a Fungus-Animal (Plasmodtophora), Plant-Galls 
DEFENCES OF PLANTS AND ANIMALS AGAINST ONE ANOTHER—Colourless 
Corpuscles and defensive Proteids (Antitoxins) of Animals; Spines, Thorns, 
Prickles, &c., of Plants; Raphides of Arum-“ Lily” (Richardia), &c.; Poisonous 
Substances, Latex, &c., of Plants; Ant-Plants (Myrmecophilous Plants), Plants 
protected by Mites - - - - - - 
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