His contributions to the Society include papers on Stratigraphical Geology, Mineralogy, and other subjects.--"Memoirs of Leonard Horner," edited by his daughter, Katherine M. Lyell (privately printed, 1890). -letters to. -memoirs of. -address to Geological Society. -on coal. -on Darwin's "Geological Observations." -visits Down. -mentioned.

Horner, Mrs. L.

Horse, ancestry. -Arab-Turk and English race-. -hybrids between Quagga and. -in N. and S. America. -equality of sexes in race-.

Horsfall, W., letter to.

Hottonia, dimorphism of.

Hounds, gestation of.

Howard, L.O.

Hoya carnosa, Darwin's work on.

Humble-bees, as agents of fertilisation of orchids.

Humboldt, Bates' description of tropical forests compared with that by. -conversation with. -on heath regions. -on migration and double creation. -"Personal Narrative." -on violet of Teneriffe. -Darwin's opinion of. -on elevation and volcanic activity. -mentioned.

Humboldt and Webb, on Zones on Teneriffe.

Hume, Darwin on Huxley's "Life" of.

Humming-birds, agents of fertilisation.

Hunger, expression by sheldrakes of.

Husbands, resemblance between wives and.

Hutton, Frederick Wollaston, F.R.S., formerly Curator of the Canterbury Museum, Christchurch, New Zealand, author of "Darwinism and Lamarckism, Old and New," London, 1899. -letter to. -review of "Origin."

Hutton, James, (1726-97): author of "Theory of the Earth."

Huxley, L., reference to his "Life of T.H. Huxley." -information given by.

Huxley, Prof. T.H., biographical note, Volume I. -Article in "Annals and Magazine" in reply to Falconer. -on Aphis. -on automatism. -catalogue of collections in Museum of Practical Geology. -comparative anatomy by. -on Comte. -on Cuvier's classification. -Darwin's value of his opinion. -election to the Athenaeum. -friendship with Darwin. -on growth of Darwin's views. -lectures at the Royal Institution. -lectures on evolution by. -lectures to working men. -legacy and gift to. -letters to. -"Life of Hume." -"Man's Place in Nature." -marriage. -misrepresented by Owen. -founds "Natural History Review." -obituary notice of Darwin. -on the "Origin of Species." -on Owen's archetype book. -president of the British Association meeting at Liverpool (1870). -on Priestley. -quoted by Lord Kelvin as an unbeliever in spontaneous generation. -reviews by. -review of "Vestiges of Creation" by. -on Sabine's address. -on saltus. -prefatory note to Hackel's "Freedom in Science and Teaching." -address to Geological Society (1869). -on classification of man. -on contemporaneity. -on Catasetum. -on deep-sea soundings. -legacy from A. Rich. -on Lyell's "Principles." -on use of term physiological species. -on vivisection. -and H.N. Martin, "Elementary Biology" by. -mentioned.

Huxley, Mrs. T.H., queries on expression sent by Darwin to. -observations on child crying. -mentioned.

Hyacinth, experiment on bulbs.

Hyatt, Alpheus (1838-1902): was a student under Louis Agassiz, to whose Laboratory he returned after serving in the Civil War, and under whom he began the researches on Fossil Cephalopods for which he is so widely known. In 1867 he became one of the Curators of the Essex Institute of Salem, Mass. In 1870 he was made Custodian, and in 1881 Curator of the Boston Society of Natural History. He held professorial chairs in Boston University and in the Massachusetts Institute of Technology, and "was at one time or another officially connected with the Museum of Comparative Zoology and the United States Geological Survey." See Mr. S. Henshaw ("Science," XV., page 300, February 1902), where a sketch of Mr. Hyatt's estimable personal character is given. See also Prof. Dall in the "Popular Science Monthly," February 1902. -and Hilgendorf. -letters to. -letters to Darwin from. -on tetrabranchiata.

Hyatt and Cope, theories of.

Hybridism, chapter in "Origin" on. -Bentham's address on. -treatment by Darwin in "Variation of Animals and Plants."

Hybrids, and adaptation. -Darwin's views on. -evidence in favour of pangenesis from. -experiments on. -fertility of. -intermediate character of. -primrose and cowslip. -article in "Quarterly Review" on. -sterility of. -Max Wichura on. -Bronn on. -F.

Charles Darwin

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