A New Theory of the Origin of SpeciesFowler & Wells, 1883 - 272 pages |
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Page 8
... less divided into lobes , rings or joints , with a skin or crust , sufficiently hard to form an external skeleton . Of these there are three classes- Worms , Crustaceans and Insects . Vertebrates include those having two elongated ...
... less divided into lobes , rings or joints , with a skin or crust , sufficiently hard to form an external skeleton . Of these there are three classes- Worms , Crustaceans and Insects . Vertebrates include those having two elongated ...
Page 9
... less wide between the classes ; and these differences con- tinue to diminish as we descend to families , genera and species . The other forms of life are vegetable , commenc- ing in microscopic Diatoms , which furnish food for the ...
... less wide between the classes ; and these differences con- tinue to diminish as we descend to families , genera and species . The other forms of life are vegetable , commenc- ing in microscopic Diatoms , which furnish food for the ...
Page 10
... less dis- tinct and more fluctuating forms . " ( 2-52-3 ) . ( New Ed . from 6th English , 41-2 ) . According to this a genus may be regarded as the original type , and species as the varieties to be the construction given to Darwin's ...
... less dis- tinct and more fluctuating forms . " ( 2-52-3 ) . ( New Ed . from 6th English , 41-2 ) . According to this a genus may be regarded as the original type , and species as the varieties to be the construction given to Darwin's ...
Page 11
... less , which may be regarded as having descended from a sin- gle primitive pair by an uninterrupted and nat- ural succession of families . " Prof. Rice ( 26 N. Englander , 604 ) says : " A spe- cies has been defined as a group of ...
... less , which may be regarded as having descended from a sin- gle primitive pair by an uninterrupted and nat- ural succession of families . " Prof. Rice ( 26 N. Englander , 604 ) says : " A spe- cies has been defined as a group of ...
Page 12
... less , created things have a degree of relative per- fection . Thus oxygen , though ever changing in connection with other material substances - some- remains perfect oxygen . So the mind or soul of times in good company and sometimes ...
... less , created things have a degree of relative per- fection . Thus oxygen , though ever changing in connection with other material substances - some- remains perfect oxygen . So the mind or soul of times in good company and sometimes ...
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Common terms and phrases
According adaptation advance animals appear Archegosaurus Averroes birds birth body brain capacity Carboniferous Caucasian race causes cells cents changes Chimpanzee civilized color conclusion connection created creation creative Creator Darwin definite Deity descent developed distinct earth embryo ence Eocene evidence evolution existence fact feet female fishes force forms germ Gorilla gradually Haeckel hair higher horse human Huxley hypothesis idea Illustrated improvement inference instance instinct intelligence kind language large numbers living lower lowest male mammals manifested marsupial matter ment mental Mesozoic mind Miocene modern Molluscs moner monkey natural selection offspring organic origin of species ovum peculiar period phenomena Phrenology physical plants Plesiosaurus Plio Pliocene polygamy primitive principle produced Prof progenitor Protozoa question races reason regarded relation remains reptile resemble result savage says sexes sexual selection Silurian skull Spencer stone age structure supposed teleology theory tion tribes true universe vertebrate
Popular passages
Page 27 - ... and which I formerly entertained, namely, that each species has been independently created, is erroneous. I am fully convinced that species are not immutable; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct species, in the same manner as the acknowledged varieties of any one species are the descendants of that species. Furthermore, I am convinced that Natural Selection has been the main, but not exclusive, means of modification.
Page 215 - The Principles of Physiology, applied to the Preservation of Health, and to the Improvement of Physical and Mental Education.
Page 206 - There can be no doubt that the difference between the mind of the lowest man and that of the highest animal is immense. An anthropomorphous ape, if he could take a dispassionate view of his own case, would admit that though he could form an artful plan to plunder a garden — though he could use stones for fighting or for breaking open nuts, yet that the thought of fashioning a stone into a tool was quite beyond his scope. Still less, as he would admit, could he follow out a train of metaphysical...
Page 209 - It is generally acknowledged that all organic beings have been formed on two great laws — Unity of Type, and the Conditions of Existence. By unity of type is meant that fundamental agreement in structure which we see in organic beings of the same class, and which is quite independent of their habits of life.
Page 10 - From these remarks it will be seen that I look at the term species, as one arbitrarily given for the sake of convenience to a set of individuals closely resembling each other, and that it does not essentially differ from the term variety, which is given to less distinct and more fluctuating forms.
Page 26 - Although much remains obscure, and will long remain obscure, I can entertain no doubt, after the most deliberate study and dispassionate judgment of which I am capable, that the view which most naturalists until recently entertained, and which I formerly entertained, namely, that each species has been independently created, is erroneous. I am fully convinced that species are not immutable...
Page 215 - TREATISE ON FOOD AND DIET: With Observations on the Dietetical Regimen suited for Disordered States of the Digestive Organs ; and an Account of the Dietaries of some of the principal Metropolitan and other Establishments for Paupers, Lunatics, Criminals, Children, the Sick, &c. By JON. PEREIRA, MDFRS & LS Author of
Page 195 - The reply is not doubtful for a moment, and has not been doubtful any time these thirty years. Without question, the mode of origin and the early stages of the development of man are identical with those of the animals immediately below him in the scale : — without a doubt, in these respects, he is far nearer the Apes, than the Apes are to the Dog.
Page 47 - I had not formerly sufficiently considered the existence of many structures which appear to be, as far as we can judge, neither beneficial nor injurious ; and this I believe to be one of the greatest oversights as yet detected in my work.
Page 68 - If such do occur, can we doubt (remembering that many more individuals are born than can possibly survive) that individuals having any advantage, however slight, over others, would have the best chance of surviving and of procreating their kind? On the other hand, we may feel sure that any variation in the least degree injurious would be rigidly destroyed. This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural...