 | Richard Acland Armstrong - 1882 - 900 páginas
...Darwin has himself most fully recognised the need of them. His latest utterance on the subject is that " at the present time there is hardly any question in Biology of more importance than that of the nature and causes of Variability." I * It is, I think, greatly to bo regretted that some... | |
 | Samuel Butler - 1884 - 354 páginas
...in the Theory of Descent, published in 1882. " Several distinguished naturalists," says Mr. Darwin, "maintain with much confidence that organic beings...existence of an innate tendency to perfectibility " — or towards being able to be perfected. I could find no able discussion upon the whole subject... | |
 | 1882 - 896 páginas
...Darwin has himself most fully recognised the need of them. His latest utterance on the subject is that " at the present time there is hardly any question in Biology of more importance than that of the nature and causes of Variability." I * It is, I think, greatly to be regretted that some... | |
 | William Benjamin Carpenter - 1888 - 504 páginas
...has himself most " fully recognized the need of them. His latest utterance on the subject is that " ' at the present time there is hardly any question in biology of more import" 'ance than that of the nature and causes of variability.' I cannot, then, be ' ' accused of... | |
 | Harry Thurston Peck - 1898 - 908 páginas
...scientists. la the preface to the English translation of this work, which appeared iu 1882, Darwin wrote : "At the present time there is hardly any question in biology of more importance than the nature and cause of variability (in individuals)." Since the death of the great English scientist,... | |
 | John Henry Wilbrandt Stuckenberg - 1903 - 432 páginas
...existence of a special " developmental force." Darwin wrote a preface to the volume, in which he says: "At the present time there is hardly any question...reader will find in the present work an able discussion of the whole subject, which will probably lead him to pause before he admits the existence of an innate... | |
 | Oliver Joseph Thatcher - 1907 - 494 páginas
...attention among scientists and in the preface to the English translation of the work Danvin wrote : "At the present time there is hardly any question in biology of more importance than the nature and cause of variability (in individuals)." Since the death of Darwin, Dr. Weismann has... | |
 | Samuel Butler - 1924 - 288 páginas
...maintain that all variation is due to such exposure, though the manner in which the environment afts is as yet quite unknown. At the present time there...in the present work an able discussion on the whole subjeft, which will probably lead him to pause before he admits the existence of an innate tendency... | |
 | Samuel Butler - 1924 - 288 páginas
...the Theory of Descent, published in 1882. " Several distinguished naturalists," says Mr. Darwin, " maintain with much confidence that organic beings...existence of an innate tendency to perfectibility " -or towards being able to be perfected. I could find no able discussion upon the whole subject in... | |
 | Mary Jane West-Eberhard - 2003 - 820 páginas
...role of environmentally mediated variation as the greatest unsolved problem of evolutionary biology: Several distinguished naturalists maintain with much...than this of the nature and causes of variability. . . . (Darwin, 1882, p. vil These were among Darwin's last published words. They are a prophetic link... | |
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maintain with much confidence that organic beings tend to vary and to rise in the scale, independently of the conditions to which they and their progenitors have been exposed; whilst others maintain that all variation is due to such exposure, though... 
