Darwin's Theory of Evolution

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"On the Origin of Species by Means of Natural Selection, or the

Preservation of Favoured Races in the Struggle for Life," usually

shortened to "the Origin of Species," is the full title of Charles

Darwin's book, first published in 1859, in which Darwin formalized

what we know today as the Theory of Evolution. Although Darwin is the

most famous exponent of this theory, he was by no means the first

person to suspect the workings of evolution. In fact, Charles owed a

considerable debt to his grandfather Erasmus, a leading scientist and

intellectual, who published a paper in 1794, calledZoonomia, or, The

Laws of Organic Life. This set down many of the ideas that his

grandson elaborated on 70 years later. However, it was Darwin that

formalized the theory, and presented the most convincing case for the

theory.

Charles Darwin was born on the 12th of February 1809 (incidentally,

the same day and year as Abraham Lincoln), in Shrewsbury, England. He

had a privileged upbringing, and enjoyed science - particularly

biology. He graduated from Cambridge University in 1831, and on

December the 27th of that year, he set off for a five-year journey

aboard the Beagle, a ship bound for South America. His voyage was long

and eventful, including once, in Chile, encountering both an

earthquake and a tidal wave in a single day! He spent the entire

journey sea-sick, but found an interest in naturalism, and began to

think about evolution. Using the evidence he found during his tour of

South America to back up the basic theories set down by his

predecessors, and making his own adjustments and discoveries. Finally,

the Beagle arrived home on October the 2nd, 1836.

During his travels, Darwin kept five note-books, marked A to E, in

which he recorded what he found, made sketches and wrote about his

observations and theories. These later became the basis of his book,

though in a "condensed and corrected" version, to "render the volume

more fitted for popular reading," as Charles stated in the preface to

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