2009 marks the bicentennial of Charles Darwin’s birth and the 150th anniversary of the publication of his most famous work, On the Origin of Species. The Ransom Center owns several copies of the first edition, the most interesting being the one sent by Darwin to Sir John Herschel, a famous English scientist of his day, inscribed simply “From the author.”
Darwin identified Herschel in the second sentence of the Origin as “one of our greatest philosophers.” Early in his career, Darwin knew that the elder scientist had defined “the species question”—or in Herschel’s words, “that mystery of mysteries” —as being the central one for the new science of biology (the term wasn’t widely used until mid-century). In 1836, the young scientist, then only 25, was returning from his famous voyage to the Galapagos Islands on board the Beagle.
From June 8 to 15, 1836, the Beagle was in port at Cape Town, and during this time Darwin visited Herschel, who had established an observatory in South Africa in order to expand the star catalogs made by his father, William Herschel.
We don’t know what was said, but very likely geology and volcanology were involved. Herschel inspired Darwin to apply the critical analysis of data associated with the physical sciences to the emerging life sciences. As University of Texas at Austin Professor Steven Weinberg recently noted in a talk at the Ransom Center, astronomy has historically led the way in the development of scientific methodology, later applied to other disciplines.
The Darwin-Herschel copy of the Origin, along with the letter of transmittal, stands behind as the “fossil record” of this remarkable meeting. The text of Darwin’s letter follows:
Down Bromley Kent
Nov. 11th. 
My dear Sir John Herschel
I have taken the liberty of directing Murray [John Murray, his publisher] to send you a copy of my book on the Origin of species, with the hope that you may still retain some interest on this question.— I know that I ought to apologise for troubling you with the volume & with this note (which requires no acknowledgment) but I cannot resist the temptation of showing in this feeble manner my respect, & the deep obligation, which I owe to your Introduction to Natural Philosophy. Scarcely anything in my life made so deep an impression on me: it made me wish to try to add my mite to the accumulated store of natural knowledge
With much respect | I beg leave to remain | Yours sincerely | Charles Darwin
The copy of the Origin volume mentioned in this blog is on display in the Ransom Center Reading Room lobby from November 19 through January 15, 2010, during Reading Room hours.