But as the variability of the extraordinarily developed part or organ has been so great and long-continued within a period not excessively remote, we might, as a general rule, still expect to find more variability in such parts than in other parts of the organisation which have remained for a much longer period nearly constant.
Baina ezohiko garapena izan duten atal edo organoen aldagarritasuna hain urrun ez dagoen aldian hain handia eta jarraikia izan denez gero, espero dezakegu, oraindik ere, arau orokor legez, atal horietan aldagarritasun handiagoa topatzea, aldi askoz luzeagoan aldagabe samar iraun duten organismo horren beste ataletan baino. Eta ni neu komentziturik nago horrelaxe gertatzen dela.