...farmyard model onto nature. Darwin discusses his use of the Malthusian population principle as follows: A struggle for existence inevitably follows from the...rate at which all organic beings tend to increase. ... It is the doctrine of Malthus applied with manifold force to the whole animal and vegetable kingdoms;...

...from the brutes immediately and without hesitation. Thus, in The Origin of Species, he argues that "A struggle for existence inevitably follows from...rate at which all organic beings tend to increase... there must in every case be a struggle for existence..." This is "the doctrine of Malthus applied with...

...disseminated by birds, its existence depends on them; and it may methodically be said to struggle with other fruit-bearing plants, in tempting the birds to devour...convenience' sake the general term of struggle for existence. — Charles Darwin, The Origin of Species by Means of Natural Selection, 1859 Introduction Mistletoes...

...Applying Malthus' theory of the increase of populations if left to reproduce without check, Darwin argued, A struggle for existence inevitably follows from the...rate at which all organic beings tend to increase. ... As more individuals are produced than can possibly survive, there must in every case be a struggle...

...by the pressure of population increase that produces a struggle for existence. In Charles's words: A struggle for existence inevitably follows from the...rate at which all organic beings tend to increase. . . . There is no exception to the rule that every organic being naturally increases at so high a rate,...

...truly said to struggle with the plants of the same and other kinds which already clothe the ground. ... In these several senses, which pass into each other,...convenience' sake the general term of Struggle for Existence.7 3 SELF-INTEREST As THE BEST EXPLANATION Now, there is another reason, quite independent...

...disseminated by birds, its existence depends on them, and it may metaphorically be said to struggle with other fruit-bearing plants, in tempting the birds to devour...convenience' sake the general term of Struggle for Existence (pp. 47-48). Despite Darwin's claims that he is using the last phrase in a metaphorical sense, he develops...

...evolution. Population increase was the basis of the biological dynamics of Darwin's model. Darwin says that, "A struggle for existence inevitably follows from...rate at which all organic beings tend to increase." Here is one of the grim assumptions that are typical of Darwin's era. Darwin's concept of population...

...in order to tempt birds to devour and thus disseminate its seeds rather than those of other plants. In these several senses, which pass into each other,...convenience sake the general term of struggle for existence. A struggle for existence inevitably follows from the high rate at which all organic beings tend to...

...disseminated by birds, its existence depends on them; and it may metaphorically be said to struggle with other fruit-bearing plants, in tempting the birds to devour...sake the general term of ' Struggle for Existence. ' ' ' ' ' Origin of Species, ' ' sixth London edition, pp. 59, 60. From this explanation of its use...