| Call number | Item |
| Q | Science (Go to start of category) |
| QH-QR | Biological Sciences (Go to start of category) |
| QH | Natural History and Biology (General) (Go to start of category) |
| QH363 .C44 1857 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) Vestiges of the Natural History of Creation; With a Sequel (includes "Explanations" as the sequel; New York: Harper and Bros., ca. 1857), by Robert Chambers (page images at HathiTrust) |
| QH363 .C44 1887 | Vestiges of the Natural History of Creation (London et al.: G. Routledge and sons, 1887), by Robert Chambers, contrib. by Henry Morley |
| QH363 .C49 | Explanations: A Sequel to "Vestiges of the Natural History of Creation" (London: J. Churchill, 1845), by Robert Chambers |
| QH363 .M7 1910 | Réflexions sur l'Espèce (reprint of 1842 French publication by Moritzi, with added German preface by Potonie; Berlin: W. Junk, 1910), by Alexander Moritzi, contrib. by H. Potonié |
| QH365 .D2 | The Descent of Man, by Charles Darwin (Gutenberg text) |
| QH365 .D2 | The Descent of Man, and Selection in Relation to Sex (first edition; London: John Murray, 1871), by Charles Darwin |
| QH365 .F6 | The Foundations of the Origin of Species: Two Essays Written in 1842 and 1844 (Cambridge: At the University Press, 1909), by Charles Darwin, ed. by Francis Darwin |
| QH365 .O2 | On the Origin of Species, by Charles Darwin (multiple editions) |
| QH365 .O2x | On the Origin of Species, by Charles Darwin |
| QH365 .O2 1859 | On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (first edition; London: John Murray, 1859), by Charles Darwin |
| QH365 .O2 1860 | On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (fifth thousand (second edition): London: J. Murray, 1860), by Charles Darwin (Gutenberg text, illustrated HTML, and page images) |
| QH365 .O2 1872 | The Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (sixth edition, 1872), by Charles Darwin |
| QH365 .V2 | The Variation of Animals and Plants Under Domestication (multiple John Murray (London) editions), by Charles Darwin (illustrated HTML and page images at Charles Darwin Online) |
| QH365 .V2 1868 | The Variation of Animals and Plants Under Domestication (2 volumes: London: J. Murray, 1868), by Charles Darwin |
| QH365 .V2 1883 | The Variation of Animals and Plants Under Domestication (New York: D. Appleton and Co., 1883), by Charles Darwin |
| QH366 .B4 | Der Darwinismus und die Soziale Ethik: Ein Vortrag Gehalten zur Hundertjahrfeier von Darwins Geburtstage vor der Philosophischen Vereinigung in Bonn (in German; Leipzig: J. A. Barth, 1909), by Erich Becher (page images at HathiTrust) |
| QH366 .B8 | Life and Habit (London: Jonathan Cape, 1910), by Samuel Butler, contrib. by R. A. Streatfeild (Gutenberg text) |
| QH366 .B84 | Luck, or Cunning, as the Main Means of Organic Modification? (based on the second edition of 1887), by Samuel Butler, ed. by Henry Festing Jones (Gutenberg text) |
| QH366 .D3 | Darwin and Modern Science: Essays in Commemoration of the Centenary of the Birth of Charles Darwin and of the Fiftieth Anniversary of the Publication of The Origin of Species, ed. by A. C. Seward (Gutenberg text) |
| QH366 .E8 | Evolution in Modern Thought, contrib. by Ernst Haeckel, J. Arthur Thomson, August Weismann, William Bateson, Gustav Albert Schwalbe, C. Lloyd Morgan, Harald Høffding, P. N. Waggett, J. B. Bury, and Célestin Charles Alfred Bouglé (Gutenberg text and page images) |
| QH366 .H136 | Freedom in Science and Teaching (New York: D. Appleton and Co., 1879), by Ernst Haeckel, contrib. by Thomas Henry Huxley (Gutenberg text and page images) |
| QH366 .H23 1880 | The History of Creation: or, The Development of the Earth and Its Inhabitants by the Action of Natural Causes (2 volumes; New York: D. Appleton and Co., 1880), by Ernst Haeckel, trans. by E. Ray Lankester |
| QH366 .H23 1887 | The History of Creation: or, The Development of the Earth and Its Inhabitants by the Action of Natural Causes (2 volumes; New York: D. Appleton and Co., 1887), by Ernst Haeckel, trans. by E. Ray Lankester |
| QH366 .H27 1912 | Natur und Mensch (in German; Leipzig: P. Reclam Jr., ca. 1912), by Ernst Haeckel, ed. by Carl W. Neumann (Gutenberg text and illustrated HTML) |
| QH366 .H36 | Natürliche Schöpfungsgeschichte: Gemeinverständliche wissenschaftliche Vorträge über die Entwickelungslehre im Allgemeinen und diejenige von Darwin, Goethe, und Lamarck im Besonderen (in German; Berlin: G. Reimer, 1868), by Ernst Haeckel (multiple formats at archive.org) |