The Correspondence of Charles Darwin (Volume 16, Part 1 January - June 1868)

In January 1868, Darwin's Variation Under Domestication was published; it had first been advertised in 1865. The first printing of 1500 rapidly sold out and the publisher, John Murray, ordered a second printing. Responses to the new book, added to Darwin's continuing research into sexual selection and the expression of the emotions, increased the quantity of Darwin's correspondence to such an extent that the letters for 1868 fill two volumes. This is Volume 1 of those letters covering January to June 1868..