Control Of Heredity: A Study Of The Genesis Of Evolution And Degeneracy (1903) - Tapa blanda

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Ig Travelers tell us that monkeys will watch men around a camp fire, and that as soon as the men leave, the monkeys will occupy their places, warming themselves till the fire goes out. The monkeys can appreciate the warmth coming from the fire, but they do not know enough to keep it up by piling on more wood. Much less do they know how to start a fire when they want it je should assume these monkeys sitting around a fire and engJ ed in evolving a theory of combustion, we would have a parallel to those biologists who are engaged in trying to give us a chemical formula for heredity without having the least idea of how to manipulate the forces of evolution so as to originate any desired line of development, or to maintain it for succeeding generations when the advantageous variation has been originated by accident. Knowledge that carbon unites with oxygen in certain definite proportions during combustion is both interesting and useful, but its usefulness is secondary to the usefulness of knowing how to build a fire when wanted, and to maintain and control it when it is built. Selection has been an instrument by which breeders have, in a few generations, vastly improved our domestic animals, but confessedly selection, as applied to the lower animals, is not applicable to civilized man. In the preparation of the following pages it has Lbeen my object to provide a simple and practical process of lighting and controlling the fires of evolution, particularly in their application to man.
(Typographical errors above are due to OCR software and don't occur in the book.)

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