Nature Versus Natural Selection: An Essay on Organic Evolution

accidental action of Natural adapted animal intelligence argument Artificial Selection assertion assume axolotl become believe birds breed brought brown rat burrow butterflies caterpillar cause co-operation Colours of Animals connection correlated variation Darwin death difficulty direct action dogs effect eggs enemies evidence experience external conditions extinction fact favourable variations female fertile fittest germ plasm habits hare hypothesis illustration individuals inherited insects instinct intelligence kind larvæ law of nature less live means of Natural mimicry modification Natural Selection necessarily nest neuter observed occur offspring Organic Evolution Origin of Species parents perfect phenomena phenomenon plants possible prey Prince Kropotkin principle produced protection prove race reason resemblance result seems sexual reproduction Sexual Selection similar variants slight sometimes stability of species structure struggle for existence suppose survival take place theory of Natural tion transforming influence transmutation of species varieties Wallace Weismann wings young