He may disbelieve in the immense intervals of time which must have elapsed between our consecutive formations; he may overlook how important a part migration has played, when the formations of any one great region, as those of Europe, are considered;
Badu eskubiderik hurrenez hurreneko formazio batetik bestera iragan behar izan duten denbora tarte luzeetan ez sinesteko; badu eskubiderik, Europa bezalako zeinahi herrialde zabaleko formazioak kontuan harturik, migrazioek jokatu duten zeregina aintzat ez hartzeko;