XIV INSTANCES OF THE WONDER OF LIFE 



rats, rat-fleas, and plague Bacilli 



yellow fever and the Stegomyia mosquito 



the importance of the white heron 



the fate of the passenger pigeon 



the correlation of organisms in the web of hfe 



the various curves of life 



the development of the egg 



development of a fraction of an egg 



many embryos from one egg 



the ripening of the egg 



the fertilization of the egg 



artificial parthenogenesis . 



a remarkable case of hybridiiation 



the development of nerve-fibres 



the distinctiveness of organic growth 



internal secretions in relation to growth 



organisms of unlimited growth . 



structural registration of growth 



regulation of growth 



the meaning of youth 



the play of animals 



courtship among animals . 



combats of males .... 



significance of courtship-behaviour 



habits of sea-hons .... 



fragrance of butterflies 



audible signalling on the part of a male moth 



post-matrimonial cannibahsm . 



parental care .... 



paternal care .... 



the remarkable behaviour of the bee-hunter 



habits of dung-rolhng beetles . 



brooding insects 



Over two thousand feathers from the nest of the long-tailed tit 



the tabula rasa of the young bird's brain 



the chain of parental instincts 



the prevalence of other-regarding activities 



longevity of animals .... 



a Centenarian tortoise .... 



the different kinds of death 



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