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On the Origin of Species by Means of Natural Selection

By: Charles Darwin

Considered to be one of the books that changed the world and how we view ourselves, On The Origin of Species by Charles Darwin was met with incredulous horror when it was first published in 1859. The revolutionary, almost blasphemous ideas it described were seen as antithetical to the existing ideas of Creation contained in the Bible and other religious texts. It was mocked, reviled and the author was personally subjected to vicious persecution by the establishment and theologians. In the years that followed its publication, the book became the subject of furious intellectual and social debate. For modern day readers, On The Origin of Species or The Preservation of Favored Races in the Struggle for Life to give it its full title, represents not just a turning point in scientific discovery, but also the keystone of research and further inquiries into the field of human origin and an emergence from the Dark Ages of mere belief. Charles Darwin was a typical product of upper class Victorian society. His privileged family background included teachers, doctors, clergymen and businessmen. A desultory career in school and college was followed by vague ambitions to join the Church. Later, he embarked on a course in medicine at Edinburgh, but gave it up after two years to join Robert Grant, a famous biologist and proponent of evolutionary theories propounded by French naturalists. In 1831, Darwin was invited to join the expedition on board the now famous HMS Beagle which was to conduct explorations in South America. Darwin was employed as naturalist/companion of Captain Fitzroy and the expedition lasted for five years. The ship traveled to various South American countries and returned via Australia and Mauritius to England. Contrary to popular opinion, Darwin was certainly not the first to come up with the idea of Evolution. In fact, his own grandfather, Erasmus Darwin had proposed the idea in 1794. However Charles' contribution was to provide the mechanism via which evolutionary theory worked which he called “natural selection.” In On The Origin of Species he provides a wealth of observations on different species and how they adapt to their natural environment. His further work on pigeon breeding and studies in geology began to crystallize in the famous theory which says that species are not “created” but they “evolve.” As a radical and profoundly original work which shook contemporary ideas to their foundation, On The Origin of Species is indeed a historically important and an informative read.

Darwin's theory of evolution is based on key facts and the inferences drawn from them, which biologist Ernst Mayr summarized as follows:

  • Every species is fertile enough that if all offspring survived to reproduce, the population would grow (fact).
  • Despite periodic fluctuations, populations remain roughly the same size (fact).
  • Resources such as food are limited and are relatively stable over time (fact).
  • A struggle for survival ensues (inference).
  • Individuals in a population vary significantly from one another (fact).
  • Much of this variation is heritable (fact).
  • Individuals less suited to the environment are less likely to survive and less likely to reproduce; individuals more suited to the environment are more likely to survive and more likely to reproduce and leave their heritable traits to future generations, which produces the process of natural selection (fact).
  • This slowly effected process results in populations changing to adapt to their environments, and ultimately, these variations accumulate over time to form new species (inference).

 

 

Book Details

Language

English

Original Language

English

Published In

1859

Author

Charles Robert Darwin was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. His proposition that all species of life have descended over tim...

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