The Philosophy of Natural History

animals appearance attack bees birds birds of prey blood bodies bones called capable carnivorous caterpillars cavity cells chrysalis chyle circulation climates color covered Crustacea degree deposit devour digestion distinguished earth eggs elephant employed enabled existence external extremely feed feet female fishes flies frequently furnished gastric juice habitations hatched heat hive holes horse human inches inhabitants insects instinct kind labor larvæ leaves legs live lungs males manner mastication membrane metamorphosis migration mode motion mouth muscles nature nest neuters never nourishment nymphs objects observed operation organs ourang-outang papillæ perfect perform plants polypes possessed prey principally produced propolis purpose quadrupeds remarkable reptiles resemblance respiration retina sensation sense shell situated skin society sometimes species stomach structure substances surface swallows tail teeth tion torpid transformation trees tribes trunk vegetable vessels wasps whole wings winter worms young Zoophytes