Show human know part world iceland average length life shown census 1905 1905 average people island live ago double mean duration human life ago sweden norway healthful iceland take palm longevity mean duration life sweden being norway 9 nerve whole roost simple industrious inhabitant slip along few incident hat stimulate depress pulse winter same mall mall mail boat leith harbor reykjavik weeks iceland IB fact island advocate IC ELANDERS LONG LIVED average age double mean mean mel 9 ere life win draw back g |