International Science Library by [Charles Darwin, Herbert Spencer, Thomas Huxley, John Tyndall, Ernst Haeckel, Frederick Wright, Alleyne Nicholson, C. A. Young]

New York: A. L. Fowle, n.d. [c. 1890]. Fifteen volumes, duodecimo (12cm), in green publisher’s cloth with gilt titles and decorations; glossaries and indexes. The authors and titles included in this complete set are:  Charles Darwin. The Descent of Man, The Origin Of Species; Herbert Spencer. Education: Intellectual, Moral and Physical; First Principles; Thomas Huxley. Man`s Place in Nature; Science and Education;  John Tyndall. The Forms of Water in Clouds and Rivers, Ice and Glaciers; Sound;  Ernst Haeckel. The Evolution of Man;  Frederick Wright. Man and the Glacial Period; Alleyne Nicholson. The Ancient Life-History of the Earth ; Tyndall, Huxley, Spencer, et al. The Culture Demanded by Modern Life;  C. A. Young. The Sun. A fine and unusually complete collection of the works of  some of the most influential writers on scientific matters of the nineteenth century-- the Darwin titles, in particular, are the sixth American edition and (presumably) the last completed in his lifetime.