As it is certain that worms swallow many little stones, ind… - Charles Darwin

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As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they serve, like mill-stones, to triturate their food.

Charles Darwin

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About Charles Darwin

Charles Robert Darwin (12 February 1809 – 19 April 1882) was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. He proposed that evolution could be explained in part through natural and sexual selection. Prompted by awareness that Alfred Russel Wallace was developing similar theories he published his own sooner than he had originally intended. This theory is now an integral component of biological science.

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Birth Name: Charles Robert Darwin

Alternative Names: Charles R. Darwin • C. R. Darwin • Darwin • C.R. Darwin • CR Darwin

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Thomas Henry Huxley Stephen Jay Gould Richard Dawkins Robert Chambers David Hume

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Though the theory is worthless without the well-observed facts, the facts are useless without the frame of the theory to receive them.

In the future I see open fields for more important researches. Psychology will be securely based on the foundation already laid by Mr. Herbert Spencer, that of the necessary acquirement of each mental power and capacity by graduation.

descent with modification

As it is certain that worms swallow many little stones, independently of those swallowed while excavating their burrows, it is probable that they ser… - Charles Darwin

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