INSTANCES OF THE WONDER OF LIFE xvii 



PAGE 



development considered as akin to recollection . . . 602 



peach-trees becoming evergreen 602 



remarkable experiments with nurse -toads .... 604 



the possibility of germinal experiment .... 606 

 the living past . . .606 



man's body as a museum of relics ..... 607 



the vestigial hind -limbs of whales ..... 608 



the pineal body, sometimes an eye 609 



a two-toed horse ........ 611 



the stability of the germ-plasm ..... 612 



a persistent relic in shrews .613 



the third eyelid in man 614 



the egg-tooth of young birds . . . . . .616 



the hairs of whales 618 



living fossils, such as Sphenodon ..... 620 



a quadrupedal young bird, Opisthocomus . . . 620 



conservatism in evolution ...... 621 



the amoaboid growth of nerve-cells ..... 622 



the distinctiveness of vital activity ..... 624 



the regulation of bodily functions ..... 626 



the complexity of everyday life ..... 627 



various examples of annual behaviour, all requiring historical 



explanation ........ 628 



the migration of eels 630 



development transcending mechanical categories . . 635 



the continuity of evolution 631 



the achievements of man's reason ..... 649 



Liesegang's rings ........ 643 



the fundamental mysteriousness of Nature. . . . 648 



