The Origin of Species (Ch. 1 Variation under Domestication), by Charles Darwin

<p>The signal for the beginning of a great controversy, still raging, was the publication of Darwin's "Origin of Species." This was the first complete statement of the evolution theory, which had been privately advanced but never publicly taught. A new epoch in science dates from this great work. (Volume 11, Harvard Classics)</p> <p>"Origin of Species" published Nov. 24, 1859.</p>