 ... colour-variations either to one sex only or to both sexes ; the difference depending on some unknown law, and not being due to natural selection. I have long held this portion of Mr. Darwin's theory to be erroneous ; and have argued that the primary...  The American Naturalist - Pàgina 7151877Visualització completa - Sobre aquest llibre
 | 1877 - 522 pàgines
...and that diversity of colour in the sexes is due, primarily, to the transmission of colour-variations either to one sex only or to both sexes, the difference...argued that the primary cause of sexual diversity of colour was the need of protection, repressing in the female those bright colours which are normally... | |
 | Sir George Grove, David Masson, John Morley, Mowbray Morris - 1877 - 572 pàgines
...colour-variations either to one sei -о or to both sexes, the difference der. a-: ing on some unknown law, and ts being due to natural selection. I have long held this...argued that the primary cause of sexual diversity of colour was the need of protection, repressing in the feniüthose bright colours which are nomudlj produced... | |
 | 1877 - 528 pàgines
...colour-variations either to one sex only or to both sexes, the difference depend ing on some unknown law, and nnt being due to natural selection. I have long held this...erroneous, and have argued that the primary cause ni sexual diversity of colour was the neeJ of protection, repressing in the female those bright colours... | |
 | Alfred Russel Wallace - 1878 - 382 pàgines
...and that diversity of colour in the sexes is due, primarily, to the transmission of colour-variations either to one sex only or to both sexes ; the difference...argued that the primary cause of sexual diversity of colour was the need of protection, repressing in the female those bright colours which are normally... | |
 | 1878 - 860 pàgines
...that diversity of colours in the sexes is due, primarily, to the transmission of colour variations either to one sex only or to both sexes, the difference...unknown law, and not being due to natural selection. From this conclusion Mr. Wallace differs, and argues with great force and ingenuity in favour of the... | |
 | 1878 - 592 pàgines
...least, first of all, to the transmission of color variations either to one sex only or to both seхes, the difference depending on some unknown law and not being due to simply natural selection. Mr. Wallace, who has h ad long experience in the tropics, regards this view... | |
 | Alfred Russel Wallace - 1878 - 416 pàgines
...primarily, to the transmission of colour-variations either to one sex only or to both sexes; the differenee depending on some unknown law, and not being due to natural selection. 1 have long held this portion of Mr. Darwin's theory to be erroneous ; and have argued that the primary... | |
 | Charles Keeler - 1890 - 922 pàgines
...birds of to-day. Wallace takes a directly opposite view, as expressed in the following passage: * " I have long held this portion of Mr. Darwin's theory...repressing in the female those bright colors which were normally produced in both sexes by general laws; and I have attempted to explain many of the more... | |
 | Alfred Russel Wallace - 1891 - 516 pàgines
...and that diversity of colour in the sexes is due, primarily, to the transmission of colour-variations either to one sex only or to both sexes, the difference...argued that the primary cause of sexual diversity of colour was the need of protection, repressing in 1 For fuller information on this subject the reader... | |
 | Alfred Russel Wallace - 1891 - 516 pàgines
...and that diversity of colour in the sexes is due, primarily, to the transmission of colour-variations either to one sex only or to both sexes, the difference...Darwin's theory to be erroneous, and have argued that the primaryjsause of_sexual diversity of colour was the need of protection, repressing in 1 For fuller... | |
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