Essays and Criticisms, Volumen2Little, 1892 |
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Página 3
... sexual selection , ' from being again and again referred to as if it had been proved to be a vera causa , may readily be accepted as such by the uninstructed or careless reader . For many persons , at first violently opposed through ...
... sexual selection , ' from being again and again referred to as if it had been proved to be a vera causa , may readily be accepted as such by the uninstructed or careless reader . For many persons , at first violently opposed through ...
Página 5
... sexual selection : - ' An unexplained residuum of change , perhaps a large one , must be left to the assumed action of those unknown agencies , which occasionally induce strongly marked and abrupt deviations of structure in our domestic ...
... sexual selection : - ' An unexplained residuum of change , perhaps a large one , must be left to the assumed action of those unknown agencies , which occasionally induce strongly marked and abrupt deviations of structure in our domestic ...
Página 7
... sexual differences of animals , in attempting to explain what seemed to me a singular coincidence in the late period of life at which the necessary variations have arisen in many cases , and the late period at which sexual selection ...
... sexual differences of animals , in attempting to explain what seemed to me a singular coincidence in the late period of life at which the necessary variations have arisen in many cases , and the late period at which sexual selection ...
Página 9
... sexual selection ' have acted . We need not on the present occasion discuss the action of natural selection ; but it will be necessary to con- sider that of sexual selection ' at some length . It plays a very important part in the ...
... sexual selection ' have acted . We need not on the present occasion discuss the action of natural selection ; but it will be necessary to con- sider that of sexual selection ' at some length . It plays a very important part in the ...
Página 10
... sexual selection . ' The second process consists in alleged preference or choice , exercised freely by the female , in favour of particular males on account of some attractiveness or beauty of form , colour , odour , or voice , which ...
... sexual selection . ' The second process consists in alleged preference or choice , exercised freely by the female , in favour of particular males on account of some attractiveness or beauty of form , colour , odour , or voice , which ...
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Términos y frases comunes
abstract action activity admit affirm amongst animals animals and plants Aristotle assertion believe birds body brutes Buffon cause cells characters Chauncey Wright colour conception consciousness consider Darwin deny distinct doctrine evidence evolution existence explain expression external fact faculties favour feelings female force G. H. Lewes germ-plasm Herbert Spencer homology homoplasy human hypothesis ideas imagination individual insects instinct intellectual intelligence judgment kind knowledge larvæ less living creature male matter mechanical mental mind mode modifications moral motion natural selection object observed organisms origin of species parthenogenetic perception phenomena philosophy physical science Pleiocene possess principle produced Professor Eimer Professor Huxley Professor Weismann question rational reason recognised referred reflex action regard remarks result seems sensations sense sexual selection similar speak Spencer structure Suarez substance supposed tells tendency term theism theory thing thought tion true truth unconscious vorticella whole words Wright
Pasajes populares
Página 54 - The following proposition seems to me in a high degree probable — namely, that any animal whatever, endowed with well-marked social instincts, the parental and filial affections being here included, would inevitably acquire a moral sense or conscience, as soon as its intellectual powers had become as well, or nearly as well developed, as in man.
Página 4 - IF IT could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down.
Página 88 - ... scientific than that of the past ; because it has not only renounced idols of wood and idols of stone, but begins to see the necessity of breaking in pieces the idols built up of books and traditions and fine-spun ecclesiastical cobwebs, and of cherishing the noblest and most human of man's emotions, by worship "for the most part of the silent sort" at the altar of the Unknown and Unknowable.
Página 26 - It is only our natural prejudice, and that arrogance which made our forefathers declare that they were descended from demigods, which leads us to demur to this conclusion.
Página 102 - Dr. Hooker, in his address to the British Association, spoke thus of the author: "Of Mr. Wallace and his many contributions to philosophical biology it is not easy to speak without enthusiasm; for, putting aside their great merits, he, throughout his writings, with a modesty as rare as I believe it to be unconscious, forgets his own unquestioned claim to the honour of having originated independently of Mr. Darwin, the theories which he so ably defends.
Página 146 - Whence it becomes manifest that our experience of force, is that out of which the idea of Matter is built. Matter as opposing our muscular energies, being immediately present to consciousness in terms of force ; and its occupancy of Space being known by an abstract of experiences originally given in terms of force ; it follows that forces, standing in certain correlations, form the whole content of our idea of Matter.
Página 5 - I probably attributed too much to the action of natural selection or the survival of the fittest. I have altered the fifth edition of the Origin so as to confine my remarks to adaptive changes of structure.
Página 63 - Hence every detail of structure in every living creature (making some little allowance for the direct action of physical conditions) may be viewed either as having been of special use to some ancestral form, or as being now of special use to the descendants of this form — either directly, or indirectly, through the complex laws of growth.
Página 45 - Nevertheless the first foundation or origin of the moral sense lies in the social instincts, including sympathy; and these instincts no doubt were primarily gained, as in the case of the lower animals, through natural selection.
Página 8 - Darwin's theory, that the great break in the organic chain between man and his nearest allies, which cannot be bridged over by any extinct or living species, is answered simply by an appeal ' to a belief in the general principle of evolution