...THE ENVIRONMENT. Darwin's definition of natural selection or the survival of the fittest is : ' 'The preservation of favorable individual differences and variations and the destruction of those that are injurious." Whether a particular variation is beneficial or injurious depends of course on...

...exclusively," "acts solely," in saving variations which are "beneficial," while he repeatedly tells us that "This preservation of favorable individual differences...variations, and the destruction of those which are injurious [such as partly developed wings, which could be of no service,] I have called natural selection or...

...degree injurious would be rigidly destroyed. [Why has it not " rigidly " destroyed the camel's hump?] This preservation of favorable individual differences...variations and the destruction of those which are injitrious I have called natural selection or survival of the fittest." — Origin of Species, p. 63....

...variation in the least degree injurious would be rigidly destroyed. This preservation of favourable individual differences and variations, and the destruction...have called Natural Selection, or the Survival of the Fittest. Variations neither useful nor injurious would not be affected by natural selection, and would...

...their descendants of useful variations arising in animals or plants. This preservation of favourable individual differences and variations, and the destruction...have called Natural Selection, or the Survival of the Fittest. . . . Several writers ha ve misapprehended or objected to the \ttmnatural seiettioH. Some...

...their descendants of useful variations arising in animals or plant*. This preservation of favourable individual differences and variations, and the destruction of those which Are injurious, I have called Natttral S*ltctu>n, or the Survival of the Fittest. . . . Several writers have misapprehended or objected...

...variation in the least degree injurious would be rigidly destroyed. This preservation of favourable individual differences and variations, and the destruction...have called natural selection, or the survival of the fittest." These extracts contain the principles on which Mr. Darwin has built up his theory of evolution....

...saving variations which are " beneficial," while he repeatedly tells us tiiat "This preserv,,tii'n of favorable Individual differences and variations, and the destruction of those which are injurious [such as partly developed wings, which could be of no service,] I have called natural selection or...

...undergone modifications useful to it under the actual conditions of existence. Or, in Darwin's own words, " This preservation of favorable individual differences...have called Natural Selection, or the Survival of the Fittest." The process, therefore, does not touch the origin of the variations, or even the accumulation...

...variation in the least degree injurious would be rigidly destroyed. This preservation of favourable individual differences and variations, and the destruction...have called Natural Selection, or the Survival of the Fittest. Variations neither useful nor injurious would not be affected by natural selection, and would...