The Writings of John Burroughs, כרך 19

Alfred Russel Wallace animal appear apple apple-trees Artificial selection atom begin Bergson birds Catskills chemical chemical affinity chipmunk color corn cosmic course creative Creative Evolution Darwin Devonian doubtless drift boulder earth élan vital ence enemies evolution feet flow forces fruit geologic geologic ages gravity ground hawk hermit thrush hole human impulse inorganic insect instinct land laws literature living body living things look material matter of chance mechanical mind mountains movements mystery natural selection nest never non-living nuts organic origin of species peach-pits pebbles philosophy physical plants play probably purpose quartz reason red squirrel rocks scientific faith seeds seems sense Sir Oliver Lodge soil song sparrows species spirit spring squirrel stone stream struggle surface tendency tion tree Tyndall vital warbler whole wild creatures wind winter Woodchuck Lodge