On the genesis of speciesD. Appleton and Company, 1871 - 314 стор. |
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Сторінка 7
... Instances . - Sterility of Hybrids . - Prepotency of Pollen of Same Species , but of Different Race . - Mortality in Young Gallinaceous Hybrids . - A Bar to Intermixture exists somewhere.- Guinea - pigs . Summary and Conclusion · p ...
... Instances . - Sterility of Hybrids . - Prepotency of Pollen of Same Species , but of Different Race . - Mortality in Young Gallinaceous Hybrids . - A Bar to Intermixture exists somewhere.- Guinea - pigs . Summary and Conclusion · p ...
Сторінка 18
... instances will show . By this theory of " Natural Selection , " light is thrown on the more singular facts relating to the geographical distribution of animals . and plants ; for example , on the resemblance between the past and present ...
... instances will show . By this theory of " Natural Selection , " light is thrown on the more singular facts relating to the geographical distribution of animals . and plants ; for example , on the resemblance between the past and present ...
Сторінка 21
... instance of the assumption by an animal of the appearance of a vegetable structure ( see illustration on p . 47 ) ; and ... instances a similarly striking re- semblance to other birds , butterflies , reptiles , and fish , of altogether ...
... instance of the assumption by an animal of the appearance of a vegetable structure ( see illustration on p . 47 ) ; and ... instances a similarly striking re- semblance to other birds , butterflies , reptiles , and fish , of altogether ...
Сторінка 36
... instances is , of course , plain and intelligible enough ; such e . g . , as those which tend to promote the destructive facul- ties of beasts of prey on the one hand , or to facilitate the flight or concealment of the animals pursued ...
... instances is , of course , plain and intelligible enough ; such e . g . , as those which tend to promote the destructive facul- ties of beasts of prey on the one hand , or to facilitate the flight or concealment of the animals pursued ...
Сторінка 41
... instances this superficial resemblance by one creature to some other quite distinct creature acts as a safe- guard to the first . One or two instances must here suffice . In South America there is a family of butterflies , termed ...
... instances this superficial resemblance by one creature to some other quite distinct creature acts as a safe- guard to the first . One or two instances must here suffice . In South America there is a family of butterflies , termed ...
Загальні терміни та фрази
5th edit action of Natural acts admit affinity Animals and Plants annelids apes appear assertion atoms beauty believe BIRD OF PARADISE birds body bones butterflies cause Cetacea chapter color complete conceivable conception considerable contended creation creatures Crustacea Darwin Darwinian Darwinian theory degree derived difficulty direct distinct evidence evolution evolved existence explain external facts favor fishes force fortuitous gemmules habits harmony Herbert Spencer homology Huxley Ibid ICHTHYOSAURUS indefinite individual innate power insects instances internal intuitions kind laws less limbs machairodus Malay Archipelago mammals manifestation marsupial matter means minute mode modifications moral Natural Selection objections observed Origin of Species Pangenesis peculiar phenomena Plants under Domestication PLESIOSAURUS possessed present preserved principle priori probably produced Prof pterodactyls race reason regard remarkable reptiles resemblance result says seems serial homology Silurian similar structure supposed tend tendency theism theory of Natural tion true Ungulata variations vertebrate Wallace wing
Популярні уривки
Сторінка 255 - 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.
Сторінка 202 - In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.
Сторінка 262 - Thus the consciousness of an Inscrutable Power manifested to us through all phenomena, has been growing ever clearer ; and must eventually be freed from its imperfections. The certainty that on the one hand such a Power exists, while on the other hand its nature transcends intuition and is beyond imagination, is the certainty towards which intelligence has from the first been progressing.
Сторінка 72 - The justice of these remarks cannot I think be disputed. If, for instance, a bird of some kind could procure its food more easily by having its beak curved, and if one were born with its beak strongly curved, and which consequently flourished, nevertheless there would be a very poor chance of this one individual perpetuating its kind to the exclusion of the common form...
Сторінка 217 - I believe that the experiences of utility organized and consolidated through all past generations of the human race, have been producing corresponding nervous modifications, which, by continued transmission and accumulation, have become in us certain faculties of moral intuition — certain emotions responding to right and wrong conduct, which have no apparent basis in the individual experiences of utility.
Сторінка 208 - I will call no being good, who is not what I mean when I apply that epithet to my fellow-creatures ; and if such a being can sentence me to hell for not so calling him, to hell I will go.
Сторінка 285 - Plato and Demosthenes, Aristotle and Isocrates, might have respectively excelled in each other's province, but that each was absorbed in his own; his words are emphatic ; "quorum uterque, suo studio delectatus, contemsit alterum.
Сторінка 36 - 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.
Сторінка 113 - English greyhounds of the best breed, to hunt the hares which abound in that country. The great platform which is the scene of sport is at an elevation of about...