
Last paragraph of the first edition (1859). Only use of the term "evolve" or "evolution" in the first edition.
In the second http://darwin-online.org.uk/content/frameset?pageseq=508&itemID=F376&viewtype=image (1860) through sixth (1872) editions, Darwin added the phrase "by the Creator" to read:
There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
Source: On the Origin of Species (1859), chapter XIV: "Recapitulation and Conclusion", page 489-90 http://darwin-online.org.uk/content/frameset?pageseq=508&itemID=F373&viewtype=image