The Philosophy of Natural History

acquire animals appearance attack become bees birds blood bodies bones build called carried caterpillars cause cells circumstances color common consists constructed contained continue course covered direction discovered distance distinguished earth eggs employed enabled entirely equal existence experience external extremely fact feed feet female fishes four frequently furnished give habitations hand head heat holes human individuals inhabitants insects instinct kind known labor leaves legs length less live males manner means migration motion mouth nature nearly nest never nourishment objects observed operation organs particular pass perfect perform period plants possessed principally produced quadrupeds receive regard remain remarkable resembles respiration sense shell side similar situated skin society sometimes soon species stomach strong structure substances surface swallows takes teeth tion torpid trees tribes various vegetable whole wings winter worms young