 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 Popular Science Monthly - Página 761890Vista completa - Acerca de este libro
 | Marlborough College (Marlborough, England). Natural History Society - 1869 - 450 páginas
...am fully convinced that spacios are not immutable, but that these belonging to the same genera are lineal descendants of some other and generally extinct...Furthermore I am convinced that Natural Selection has been tho main but not exclusive means of modification." What is this work performed by Natural Selection... | |
 | Jared Sparks, Edward Everett, James Russell Lowell, Henry Cabot Lodge - 1872 - 492 páginas
...Introduction in the first edition of the work, and in all subsequent editions, occur these words : " I am convinced that Natural Selection has been the...important, but not the exclusive, means of modification." That the work is not a merely dialectical performance is clear ; and it is equally clear that in proportion... | |
 | Charles Darwin - 1873 - 492 páginas
...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...important, but not the exclusive, means of modification. ' CHAPTER I. VARIATION UNDER DOMESTICATION. Cnuses of Variability — Effects of Habit and the use... | |
 | Lucius Edwin Smith, Henry Griggs Weston - 1873 - 522 páginas
...says] 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...I am convinced that Natural Selection has been the main but not exclusive means of modification. He allows some room for the working of circumstances... | |
 | Charles Darwin - 1875 - 504 páginas
...generally extinct species, in the Rime manner as the acknowledged varieties of any one species are ihe descendants of that species. Furthermore, I am convinced that Natural Selection has been tbe mos'. important, but not the exclusive, means cf modification. CHAPTER I. V ASIATION UKDEE DOMESTICATION-.... | |
 | St. George Jackson Mivart - 1876 - 488 páginas
...selection has been the main, but not the exclusive means of modification." In the last edition he says:" I am convinced that natural selection has been the...important, but not the exclusive means of modification." Before the appearance of the last edition, however, Mr. Darwin published his 'Descent of Man;' and... | |
 | St. George Jackson Mivart - 1876 - 492 páginas
...been the main, but not the exclusive means of modification." In the last edition he says : " I ain convinced that natural selection has been the most...important, but not the exclusive means of modification." Before the appearance of the last edition, however, Mr. Darwin published his 'Descent of Man ;' and... | |
 | Asa Gray - 1878 - 416 páginas
...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 varietfes of any one species are the descendants of that species. Furthermore, I am convinced that... | |
 | Samuel Davey - 1879 - 302 páginas
...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 way as the acknowledged varieties of any one species are the descendants of that species." In answer... | |
 | Samuel Butler - 1879 - 436 páginas
...very full detail upon natural selection, or ' the survival of the fittest, and maintains it to have been "the most important but not the exclusive means of modification." * It will be readily seen that, according to Lamarck, the variations which when accumulated amount to specific... | |
| |
