Footnotes to Evolution: A Series of Popular Addresses on the Evolution of Life |
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Page vii
... Factors of Organic Evolution as displayed in the Process of Development , is by Professor Edwin Grant Conklin , of the University of Pennsyl- vania ; the second , on the Physical Basis of Heredity , is by Professor Frank Mace McFarland ...
... Factors of Organic Evolution as displayed in the Process of Development , is by Professor Edwin Grant Conklin , of the University of Pennsyl- vania ; the second , on the Physical Basis of Heredity , is by Professor Frank Mace McFarland ...
Page x
... factors . IV . THE FACTORS OF EVOLUTION FROM THE STAND- POINT OF EMBRYOLOGY . By Professor Edwin Grant Conklin Embryology shows the method of evolution . Statement of propositions . Causes of development . Intrinsic causes dependent on ...
... factors . IV . THE FACTORS OF EVOLUTION FROM THE STAND- POINT OF EMBRYOLOGY . By Professor Edwin Grant Conklin Embryology shows the method of evolution . Statement of propositions . Causes of development . Intrinsic causes dependent on ...
Page xi
... factors affect germinal protoplasm ? Diminished nutrition . Changes in environment . Use and disuse . Mechanical conditions . Results of impact . Value of direct experiment . Return to the position of Darwin . The final word still far ...
... factors affect germinal protoplasm ? Diminished nutrition . Changes in environment . Use and disuse . Mechanical conditions . Results of impact . Value of direct experiment . Return to the position of Darwin . The final word still far ...
Page xiv
... factor in government . Cor- ruption fund of public charity . Foreign immigration . Taking away the " freedom which is thraldom to sin . ” · · • XIII . THE WOMAN OF EVOLUTION AND THE WOMAN OF PESSIMISM Primary meaning of sex . Primal ...
... factor in government . Cor- ruption fund of public charity . Foreign immigration . Taking away the " freedom which is thraldom to sin . ” · · • XIII . THE WOMAN OF EVOLUTION AND THE WOMAN OF PESSIMISM Primary meaning of sex . Primal ...
Page 18
... factor as potent as the actual survival of the fittest . To be on the ground is a factor not less important in determining sur- vival than to have a special fitness for the conditions of life . The epithet " natural " in natural ...
... factor as potent as the actual survival of the fittest . To be on the ground is a factor not less important in determining sur- vival than to have a special fitness for the conditions of life . The epithet " natural " in natural ...
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Common terms and phrases
acquired characters action adaptation adult altruism ammonites ammonoids ancestors ancestry animal or plant become biological birds blood body Brachiopoda brain centrosome chromatin chromosomes competition concession creation creatures cytoplasm Darwin degeneration degree descendants division egg cell elements embryo embryology ence environment evidence experience extrinsic fact factors fishes fittest food yolk forces forms function genera germ cell Glyphioceras growth hereditary heredity higher homology human increase individual influence inheritance intrinsic causes knowledge larvæ larval less living mammals means ment mind modified monism natural selection naturalists nerve never nucleus organic evolution Origin of Species parent pauperism phenomena philosophy Plate produced progress protoconch protoplasm protozoa race recognised relations religion Richard Roe Sacculina says sense shown special creation stage structure struggle for existence survival theory things tion true truth variation vertebræ Weismann whorls woman words
Popular passages
Page 51 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Page 21 - Hence, as more individuals are produced than can possibly survive, there must in every case be a struggle for existence, either one individual with another of the same species, or with the individuals of distinct species, or with the physical conditions of life. It is the doctrine of Malthus applied with manifold force to the whole animal and vegetable kingdoms ; for in this case there can be no artificial increase of food, and no prudential restraint from marriage.
Page 51 - To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of the individual.
Page 19 - Two canine animals, in a time of dearth, may be truly said to struggle with each other which shall get food and live. But a plant on the edge of a desert is said to struggle for life against the drought, though more properly it should be said to be dependent on the moisture.
Page 270 - We live in a world which is full of misery and ignorance, and the plain duty of each and all of us is to try to make the little corner he can influence somewhat less miserable and somewhat less ignorant than it was before he entered it.
Page 21 - There is no exception to the rule that every organic being naturally increases at so high a rate that, if not destroyed, the earth would soon be covered by the progeny of a single pair.
Page 90 - It is good to make two blades of grass grow where only one grew before.
Page 16 - These facts, as will be seen in the latter chapters of this volume, seemed to throw some light on the origin of species -- that mystery of mysteries, as it has been called by one of our greatest philosophers.
Page 213 - After describing a set of forms as distinct species, tearing up my MS., and making them one species, tearing that up and making them separate, and then making them one again (which has happened to me), I have gnashed my teeth, cursed species, and asked what sin I had committed to be so punished.
Page 367 - The word of the Lord by night To the watching Pilgrims came, As they sat by the seaside, And filled their hearts with flame. God said, I am tired of kings, I suffer them no more; Up to my ear the morning brings The outrage of the poor.