[Footnote 255: _Les Luttes entre Sociétés humaines et leurs phases successives_, Paris, 1893.] [Footnote 256: _Le socialisme contemporain_, p. 384 (6th edit.), Paris, 1891.] [Footnote 257: Geddes and Thomson, _The Evolution of Sex_, p. 311, London, 1889.] [Footnote 258: _De la Division du Travail social_, Paris. 1893.] INDEX _Abraxas grossulariata_, 100 Acquired characters, transmission of, 20, 28, 42, 94, 120, 149, 171, 173 _Acraea johnstoni_, 290 [Transcriber's Note: No such page number or reference seen] Adaptation, 24, 27, 34, 39, 42-45, 50, 58, 79-86, 106, 107 Adloff, 140 Alexander, 217 Ameghino, 132, 138 Ammon, O., Works of, 271 _Anaea divina_, 69 Anglicus, Bartholomaeus, 237 Ankyroderma, 40 Anomma, 44 Anthropops, 132 Ants, modifications of, 43-46, 51 Ardigò, 207, 208 Argyll, Huxley and the Duke of, 238 Aristotle, 3, 237, 240 Avenarius, 211 Bacon, on mutability of species, 4, 5 Baehr, von, on Cytology, 99 Bain, 194 Baldwin, J. M., 53, Foot Note 165 Balfour, A. J., 241 Barratt, 217 Bates, H. W., on Mimicry, 70, 76 --232 BATESON, W., on _Heredity and Variation in Modern Lights_, 87-110 --on discontinuous evolution, 30 Bathmism, 14 Bells (Sir Charles) _Anatomy of Expression_, 177 Bentham, Jeremy, 217, 218 Bergson, H., 208 Berkeley, 200 Berthelot, 228 Bickford, E., experiments on degeneration by, 52 Biophores, 47 Blumenbach, 89 Bodin, 256 Bonald, on war, 273 Bonnet, 6 BOUGLÉ, C., on _Darwinism and Sociology_, 264-280 Bourdeau, 253 Bourget, P., 270 Boutroux, 208 Brassica, hybrids of, 106 _Brassica Napus_, 106 Broca, 137, 270 Brock, on Kant, Foot Note 6 Brunetière, 274 Bruno, on Evolution, 4 Buch, von, 15 Buckle, 252, 253, 256, 258 Buffon, 6-15, 21, 88 Burdon-Sanderson, J., letter from, Foot Note 224 BURY, J. B., on _Darwinism and History_, 246-263 Butler, Samuel, 9, Foot Note 17, Foot Note 57, Foot Note 61, 94, Foot Note 66, 107 Butterflies, mimicry in, 65-83 --sexual characters in, 59-63 Cabanis, 201 Candolle, de, 270 Carneri, 217 _Castnia linus_, 76 Caterpillars, variation in, 36, 37 Cesnola, experiments on Mantis by, 65 Chaerocampa, colouring of, 68 Chambers, R., _The Vestiges of Creation_ by, 15 Chromosomes and Chromomeres, 47, 96-100 Chun, Foot Note 36 Claus, Foot Note 21 Clodd, E., Foot Note 13 Coadaptation, 41-54 _Colobopsis truncata_, 44 Colour, E. B. Poulton, in relation to Sexual Selection, 61-65 Comte, A., 200-203, 252-255, 262, 265 Condorcet, 221, 250, 252, 258 Cope, 138 Correlation of organisms, Darwin's idea of the, 2 Cournot, 265 Cuvier, 9, 10, 266, 268 Cytology and heredity, 95, 96, 99, 100 _Danaida chrysippus_, 75 _Danaida genutia_, 75 _D. Plexippus_, 75 Dantec, Le, 274 Darwin, Charles, as an Anthropologist, 146-165 --on ants, 44 --and S. Butler, Foot Note 61, 94 --on Cirripedia, 212 --on the Descent of Man, 111-145 --evolutionist authors referred to in the _Origin_ by, 9