"Physiography." First edition, 1877; reprinted 1877, 1878, 1879, 1880, 1881, 1882, 1883, 1884, 1885 (three times), 1887, 1888, 1890, 1891, 1893, 1897.

"Hume." English Men of Letters Series. First edition printed 1878; reprinted 1879 (twice), 1881, 1886, 1887, 1895.

"The Crayfish: an Introduction to the Study of Zoology," 1879.

"Evolution and Ethics." First edition printed 1893; reprinted 1893 (three times); second edition, 1893 third edition, 1893; reprinted 1894.

"Introductory Science Primer." First edition printed 1880; reprinted 1880, 1886, 1888, 1889 (twice), 1893, 1895, 1899.

"Science and Culture, and other Essays." First edition printed 1881; reprinted 1882, 1888.

"Social Diseases and Worse Remedies." First edition printed 1891; reprinted, with additions, 1891 (twice).

"Essays on some Controverted Questions." Printed in 1892.

Collected Essays. Volume 1. "Method and Results." First edition printed 1893; reprinted 1894, 1898.

Volume 2. "Darwiniana." First edition printed 1893; reprinted 1894.

Volume 3. "Science and Education." First edition printed 1893; reprinted 1895.

Volume 4. "Science and Hebrew Tradition." First edition printed 1893; reprinted 1895, 1898.

Volume 5. "Science and Christian Tradition." First edition printed 1894; reprinted 1895, 1897.

Volume 6. "Hume, with Helps to the Study of Berkeley." First edition printed 1894; reprinted 1897.

Volume 7. "Man's Place in Nature." First printed for Macmillan and Co.

in 1894; reprinted 1895, 1897.

Volume 8. "Discourses, Biological and Geological." First edition printed 1894; reprinted 1896.

Volume 9. "Evolution and Ethics and other Essays." First edition printed 1894; reprinted 1895, 1898.

"Scientific Memoirs," volume 1 printed 1898, volume 2 printed 1899, volume 3 1901, volume 4 1902.

SCIENTIFIC MEMOIRS.

"On a Hitherto Undescribed Structure in the Human Hair Sheath," "London Medical Gazette" 1 1340 (July 1845).

"Examination of the Corpuscles of the Blood of Amphioxus Lanceolatus,"

"British a.s.sociation Report" (1847), part 2 95; "Scientific Memoirs" 1.

"Description of the Animal of Trigonia," "Proceedings of the Zoological Society" volume 17. (1849), 30-32; also in "Annals and Magazine of Natural History" 5 (1850), 141-143; "Scientific Memoirs" 1.

"On the Anatomy and the Affinities of the Family of the Medusae,"

"Philosophical Transactions of the Royal Society" (1849), part 2 413; "Scientific Memoirs" 1.

"Notes on Medusae and Polypes," "Annals and Magazine of Natural History" 6 (1850), 66, 67; "Scientific Memoirs" 1.

"Observations sur la Circulation du Sang chez les Mollusques des Genres Firole et Atlante." (Extraites d'une lettre adressee a M.

Milne-Edwards.) "Annales des Sciences Naturelles" 14 (1850), 193-195; "Scientific Memoirs" 1.

"Observations upon the Anatomy and Physiology of Salpa and Pyrosoma,"

"Philosophical Transactions of the Royal Society" (1851) part 2 567-594; also in "Annals and Magazine of Natural History" 9 (1852), 242-244; "Scientific Memoirs" 1.

"Remarks upon Appendicularia and Doliolum, two Genera of the Tunicata,"

"Philosophical Transactions of the Royal Society" (1851), part 2 595-606; "Scientific Memoirs" 1.

"Zoological Notes and Observations made on board H.M.S. "Rattlesnake"

during the years 1846-1850" "Annals and Magazine of Natural History" 7 series 2. (1851), 304-306, 370-374; volume 8 433-442: "Scientific Memoirs" 1.

"Observations on the Genus Sagitta," "British a.s.sociation Report"

(1851) part 2 77, 78 (sectional transactions); "Scientific Memoirs" 1.

"An Account of Researches into the Anatomy of the Hydrostatic Acalephae," "British a.s.sociation Report" (July 1851) part 2 78-80 (sectional transactions); "Scientific Memoirs" 1.

"Description of a New Form of Sponge-like Animal," "British a.s.sociation Report" (July 1851) part 2 80 (sectional transactions); "Scientific Memoirs" 1.

"Report upon the Researches of Professor Muller into the Anatomy and Development of the Echinoderms" "Annals and Magazine of Natural History" series 2 volume 8 (1851) 1-19; "Scientific Memoirs" 1.

"Ueber die s.e.xualorgane der Diphydae und Physophoridae" Muller's "Archiv fur Anatomie, Physiologie, und Wissenschaftliche Medicin"

(1851) 380-384. "Scientific Memoirs" 1.

"Lacinularia Socialis: A Contribution to the Anatomy and Physiology of the Rotifera," "Transactions of the Micr. Society" London, new series 1 (1853) 1-19; (Read December 31, 1851). "Scientific Memoirs" 1.

"Upon Animal Individuality," "Proceedings of the Royal Inst.i.tution" 1 (1851-54), 184-189. (Abstract of a Friday evening discourse delivered on 30th April 1852.) "Scientific Memoirs" 1.

"On the Morphology of the Cephalous Mollusca, as Ill.u.s.trated by the Anatomy of certain Heteropoda and Pteropoda collected during the voyage of H.M.S. 'Rattlesnake' in 1846-50" "Philosophical Transactions of the Royal Society" 143 (1853) part 1 29-66. "Scientific Memoirs" 1.

"Researches into the Structure of the Ascidians," "British a.s.sociation Report" (1852) part 2 76-77. "Scientific Memoirs" 1.

"On the Anatomy and Development of Echinococcus Veterinorum"

"Proceedings of the Zoological Society" 20 (1852) 110-126. "Scientific Memoirs" 1.

"On the Ident.i.ty of Structure of Plants and Animals"; Abstract of a Friday evening discourse delivered at the Royal Inst.i.tution on April 15, 1853; "Proceedings of the Royal Inst.i.tution" 1 (1851-54) 298-302; "Edinburgh New Phil. Journal" 53 (1852) 172-177. "Scientific Memoirs" 1.

"Observations on the Existence of Cellulose in the Tunic of Ascidians"

"Quarterly Journal Micr. S." 1 1853; "Scientific Memoirs" 1.

"On the Development of the Teeth, and on the Nature and Import of Nasmyth's 'Persistent Capsule'" "Quarterly Journal Micr. S." 1 1853.

"Scientific Memoirs" 1.

"The Cell-Theory (Review)" "British and For. Med. Chir. Review" 12 (1853) 285-314. "Scientific Memoirs" 1.

"On the Vascular System of the Lower Annulosa" "British a.s.sociation Report" (1854) part 2 page 109. "Scientific Memoirs" 1.