Darwinism and Human LifeHolt, 1917 - 263 pages |
From inside the book
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Page 10
... increasing our wealth . His leaven will go on fermenting till the whole is leavened . Then it will be time for a new yeast . ( I ) THE WEB OF LIFE . - What do we owe to Darwin ? We give precedence to Darwin's picture of " The Web of ...
... increasing our wealth . His leaven will go on fermenting till the whole is leavened . Then it will be time for a new yeast . ( I ) THE WEB OF LIFE . - What do we owe to Darwin ? We give precedence to Darwin's picture of " The Web of ...
Page 11
... increase ; and this would lessen the number of navel - frequenting flies - then cattle and horses would become feral ... increasing circles of complexity . " ( II ) THE STRUGGLE FOR EXISTENCE . - What do we owe to Darwin ? In the second ...
... increase ; and this would lessen the number of navel - frequenting flies - then cattle and horses would become feral ... increasing circles of complexity . " ( II ) THE STRUGGLE FOR EXISTENCE . - What do we owe to Darwin ? In the second ...
Page 16
... increased in amount , the eliminative or selective process , if discriminate , consistent , and sustained , will work towards the establishment of new adaptations and new species . Natural Selection is Nature's process of singling and ...
... increased in amount , the eliminative or selective process , if discriminate , consistent , and sustained , will work towards the establishment of new adaptations and new species . Natural Selection is Nature's process of singling and ...
Page 29
... increase our respect for , and see more in , that brute creation which contained the potenti- ality of all . For it is a fundamental idea of evolution that there is nothing in the end which is not also in the beginning . ( VII ) ...
... increase our respect for , and see more in , that brute creation which contained the potenti- ality of all . For it is a fundamental idea of evolution that there is nothing in the end which is not also in the beginning . ( VII ) ...
Page 33
... increasing know- ledge . " Darwin was a fine illustration of this passion for facts ; there have been few naturalists more careful as to data . He began collecting facts in regard to the work of earthworms when a young student in ...
... increasing know- ledge . " Darwin was a fine illustration of this passion for facts ; there have been few naturalists more careful as to data . He began collecting facts in regard to the work of earthworms when a young student in ...
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Common terms and phrases
acquired characters adaptations Alfred Russel Wallace animals Arthur Thomson become biological birds blue body breed called cells Charles Darwin chromosomes colour continuity correlation Darwin's day Darwinian direction discriminate elimination disease dominant dysgenic egg-cell endeavour environment eugenic evidence fact factors favour female fertilised forms formula Galton gametes germ-cells germinal variations hereditary heredity heritable human society idea illustration important individual influence inheritance insects instance interpretation Karl Pearson kind large number larvæ living creatures London male mating mean Mendelian MENDELIAN INHERITANCE mice modifica modifications mutations natural selection naturalists normal nurture nutritive chains offspring organic evolution Origin of Species ovum owe to Darwin parents peculiarities plants Prof progress PURPLE CLOVER qualities question race raw material Ray Lankester realise recognise regard result says scientific mood sifting spermatozoon struggle for existence suggested survival theory of natural things tion transmission variability Wallace
Popular passages
Page 69 - Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult — at least I have found it so — than constantly to bear this conclusion in mind. Yet unless it be thoroughly engrained in the mind, the whole economy of nature, with every fact on distribution, rarity, abundance, extinction, and variation, will be dimly seen or quite misunderstood.
Page 182 - I happened to read for amusement ' Malthus on Population, and being well prepared to appreciate the struggle for existence which everywhere goes on from long-continued observation of the habits of animals and plants, it at once struck me that under these circumstances • favourable variations would tend to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of a new species. Here, then, I had at last got a theory by which to work...
Page 36 - Therefore, my success as a man of science, whatever this may have amounted to, has been determined, as far as I can judge, by complex and diversified mental qualities and conditions. Of these, the most important have been — the love of science — unbounded patience in long reflecting over any subject — industry in observing and collecting facts — and a fair share of invention as well as of common-sense. With such moderate abilities as I possess, it is truly surprising that I should have influenced...
Page 70 - Within himself, from more to more; Or, crown'd with attributes of woe Like glories, move his course, and show That life is not as idle ore, But iron dug from central gloom, And heated hot with burning fears, And dipt in baths of hissing tears, And batter'd with the shocks of doom To shape and use.
Page 238 - And the eye cannot say unto the hand, I have no need of thee : nor again the head to the feet, I have no need of you.
Page 58 - It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organized creatures.
Page 53 - Newman, who has long attended to the habits of humble-bees, believes that "more than two-thirds of them are thus destroyed all over England.
Page 11 - ... greatly alter (as indeed I have observed in parts of South America) the vegetation: this again would largely affect the insects ; and this, as we...
Page 34 - I had, also, during many years followed a golden rule, namely, that whenever a published fact, a new observation or thought came across me, which was opposed to my general results, to make a memorandum of it without fail and at once; for I had found by 69 experience that such facts and thoughts were far more apt to escape from the memory than favourable ones.
Page 142 - It must be clearly understood that there is nothing in these statements to invalidate the general doctrine that the children of a gifted pair are much more likely to be gifted than the children of a mediocre pair. They merely express the fact that the ablest of all the children of a few gifted pairs is not likely to be as gifted as the ablest of all the children of a very great many mediocre pairs