If it profit a plant to have its seeds more and more widely disseminated by the wind, I can see no greater difficulty in this being effected through natural selection, than in the cotton-planter increasing and improving by selection the down in the pods on his cotton-trees.
Baldin landare batek haizeak bere haziak gero eta urrunago barreiatzea behar badu, ez dut zailtasun handiagorik ikusten hori hautespen naturalaren bidez egiteko, kotoi hazleak hautespenez bere kotoi-landareen kuskuetan biloxka gehitu eta hobetzeko duena baino.