Journ. Geol. Soc." Volume XXXVII., page 43.) -letter to.
Antarctic continent, Darwin on existence of Tertiary. -hypothetical.
"Antarctic Flora," Sir J.D. Hooker's.
Antarctic floras. -Darwin at work on.
Antarctic islands, plants of.
Antarctic Land.
"Anti-Jacobin," quiz on Erasmus Darwin in.
"Antiquity of Man," Sir Charles Lyell's. -cautious views on species. -Darwin's criticism of. -Extract on Natural Selection from. -Falconer on. -Owen's criticism on.
Antirrhinum, peloric flowers.
Ants, account in "Origin" of Slave-. -Forel's work on. -Moggridge on Harvesting-. -F. Muller's observations on neuter. -storing leaves for plant-culture.
Apathus, living in nests of Bombus.
Apes, comparison as regards advance in intellect between man and. -ears of anthropoid.
Aphides, absence of wings in viviparous.
Aphis, Huxley on.
Apostasia, morphology of flowers.
Appalachian chain, Rogers on cleavage of.
Apteryx, Owen on. -wings of.
Aquilegia, Hooker and Thomson on. -variation in. -peloria and reversion.
Arachis hypogaea, Darwin on.
Arachnidae.
Araucaria, abundant in Secondary period.
Araucarian wood, fossil in S. America.
Arca, Morse on.
Archaeopteryx.
Archer-Hind, R.D., translation of passage from Plato by.
Archetype, Owen's book on. -Owen's term.
d'Archiac's "Histoire des Progres de la Geologie." -candidate for Royal Society Foreign list.
Arctic animals, protective colours.
Arctic climate, cause of present.
Arctic expeditions, Darwin on.
Arctic floras. -relation between Alpine and. -relation between Antarctic and. -Hooker's Essay on. -Darwin's admiration of Hooker's Essay. -migration of.
Arctic regions, few plants common to Europe and N. America not ranging to. -range of plants. -northern limit of vegetation formerly lower. -ice piled up in. -previous existence of plants in.
Arenaria verna, range.
Argus pheasant, colour. -unadorned head.
Argyll, Duke of, attack on Romanes in "Nature." -rejoinder by Romanes in "Nature." -Hooker on. -letter to. -"Reign of Law" by.
Aristolochia, fertilisation of.
Aristotle, reference to.
Ark, Fitz-Roy on extinction of Mastodon owing to construction of.
Armadillo.
Army, measurement of soldiers of U.S.A.
Artemia, Schmankewitsch's experiments on.
Ascension Island, plants of. -earth-movements. -volcanic rocks.
Ascidians, budding of.
Asclepiadeae, fertilisation of.
Ash, comparison of peat and coal.
Asher, Dr., sends Russian wheat to Darwin.
Ashley.
Ashley Heath, Mackintosh on boulders of.
Askenasy, E., on Darwinism.
Aspicarpa.
Ass, hybrids between mare and.
Asterias.
Astragalus hypoglottis, range of.
Astronomical causes, crust-movements due to.
Asturian plants in Ireland.
Atavism, use of term by Duchesne. -Kollmann on.
Athenaeum Club, Huxley's election.
"Athenaeum," correspondence on Darwin's statements on rate of increase of elephants. -Darwin's opinion of. -abuse of Darwin.
Atlantic islands, peculiar genera and their origin.
Atlantis, America and. -Canary I. and. -Darwin's disbelief in. -Heer's map. -Wollaston's.
Atolls, Darwin's wish for investigation by boring of coral. -Darwin on Murray's theory. -Darwin's work on.
Atomogenesis, term suggested as substitute for pangenesis.
Atriplex, buried seeds found in sandpit near Melrose.
Attica, Gaudry on fossil animals.
Auckland Island, flora.
Audubon, J.J., on antics of birds during courtship. -"Ornithological Biography."
Aurelia, Romanes on.
Auricula, dimorphism of. -experiments on.
Austen, Godwin, on changes of level on English coast.
Australia, caves of. -character of fauna. -flora of. -Hooker on flora. -relation of flora to S. America. -relation of flora to S. Africa. -European plants in. -local plants in S.W. -naturalised plants. -plants on mountains. -fossil plants. -dichogamy of trees in. -as illustrating rate and progress of evolution. -Mastodon from. -products of, compared with those of Asia. -submergence.