importance to
characters, | characters, 1872 | | characters 1859 1860 1861 1866 1869 |
| and in believing that they have been developed through 1872 |
| which are really of very little importance, and which have originated from quite secondary causes, independently of 1859 1860 1861 1866 |
| which have originated from quite secondary causes, independently of 1869 |
| must by no means overlook the effects of the definite action of changed conditions of life,— of so-called spontaneous variations, which seem to depend in a quite subordinate degree 1872 |
| should remember that climate, food, &c., probably have some little direct influence 1859 1860 1861 1866 |
| should remember that climate, food, &c., probably have had some, perhaps a considerable, direct influence 1869 |
| nature of the conditions,— of the tendency to reversion to long-lost characters,— of the complex 1872 |
| organisation; that characters reappear from the 1859 1860 1861 1866 1869 |
| laws 1872 | | law 1859 1860 1861 1866 1869 |
| growth, such as of correlation, compensation, of the pressure of one part on another, &c.,— 1872 |
| reversion; that correlation of growth will have had a most important influence in modifying various structures; 1859 1860 1861 1866 |
| reversion; that correlation is an important element of change; 1869 |
| finally 1872 | | finally, 1859 1860 1861 1866 1869 |
| of 1872 | | that 1859 1860 1861 1866 1869 |
| selection, 1872 | | selection 1859 1860 1861 1866 1869 |
| by which 1872 |
| will often have largely modified the external 1859 1860 1861 1866 |
| has often largely modified the external 1869 |
| use to one sex are often gained and then transmitted more or less perfectly to the other sex, though of no use to this sex. 1872 |
| animals having a will, to give one male an advantage in fighting with another or in charming the females. 1859 1860 1861 1866 |
| the higher animals, so as to give one male an advantage in fighting with other males, or in charming the female; and characters gained through sexual selection may be transmitted to both sexes. 1869 |
| But structures thus indirectly gained, although 1872 |
| Moreover when a modification of structure has primarily arisen from the above or other unknown causes, it may 1859 1860 1861 |
| Moreover, when a modification of structure has primarily arisen from the above or other unknown causes, it may 1866 |
| Moreover a modification, caused in any of the above specified ways, may 1869 |
| ..... 1872 | | have been 1859 1860 1861 1866 1869 |
| advantage to a 1872 |
| advantage to the 1859 1860 1861 1866 |
| direct advantage to a 1869 |
| ..... 1872 | | but 1859 1860 1861 1866 1869 |
| its modified descendants, 1872 |
| the descendants of the species 1859 1860 1861 1866 |
| its descendants 1869 |
| 1 blocks not present in 1869 1872; present in 1859 1860 1861 1866 | | To give a few instances to illustrate these latter remarks.
|
|
If | If 1859 1860 1861 1866 1872 |
| If, for instance, 1869 |
| conceal 1872 | | hide 1859 1860 1861 1866 1869 |
| importance, 1872 | | importance 1859 1860 1861 1866 1869 |
| and which, as there is reason to believe from the distribution of the thorn-bearing species in Africa and South America, serve as a defence against browsing quadrupeds, so the spikes 1872 |
| the hooks 1859 1860 1861 1866 |
| and which there is reason to believe from the distribution of the thorn-bearing species in Africa and South America, serves as a defence against browsing quad- rupeds, so the hooks 1869 |
| at first 1872 |
| have arisen from unknown laws of growth, and 1859 1860 1861 1866 |
| first 1869 |
| developed for this object, and subsequently have been improved and 1872 |
| subsequently 1859 1860 1861 1866 |
| developed for this object, and subsequently been 1869 |
| plant, 1872 | | plant 1859 1860 1861 1866 1869 |
|
